TPS79101-EP, TPS79118-EP TPS79133-EP, TPS79147-EP www.ti.com ............................................................................................................................................................ SGLS161A - APRIL 2003 - REVISED JUNE 2008 ULTRALOW NOISE, HIGH PSRR, FAST RF, 100-mA LOW-DROPOUT LINEAR REGULATORS FEATURES 1 * 100-mA Low-Dropout Regulator With EN * Available in 1.8-V, 3.3-V, 4.7-V, and Adjustable Versions * High PSRR (70 dB at 10 kHz) * Ultralow Noise (15 VRMS) * Fast Start-Up Time (63 s) * Stable With Any 1-F Ceramic Capacitor * Excellent Load/Line Transient * Very Low Dropout Voltage (38 mV at Full Load, TPS79147) * 5-Pin SOT23 (DBV) Package * TPS792xx Provides EN Options 2 APPLICATIONS * * * VCOs RF BluetoothTM, Wireless LAN SUPPORTS DEFENSE, AEROSPACE, AND MEDICAL APPLICATIONS * * * * DESCRIPTION The TPS791xx family of low-dropout (LDO) low-power linear voltage regulators features high power supply rejection ratio (PSRR), ultralow noise, fast start-up, and excellent line and load transient responses in a small outline, SOT23, package. Each device in the family is stable, with a small 1-F ceramic capacitor on the output. The family uses an advanced, proprietary BiCMOS fabrication process to yield extremely low dropout voltages (e.g., 38 mV at 100 mA, TPS79147). Each device achieves fast start-up times (approximately 63 s with a 0.001-F bypass capacitor) while consuming very low quiescent current (170 A typical). Moreover, when the device is placed in standby mode, the supply current is reduced to less than 1 A. The TPS79118 exhibits approximately 15 VRMS of output voltage noise with a 0.1-F bypass capacitor. Applications with analog components that are noise sensitive, such as portable RF electronics, benefit from the high-PSRR and low-noise features as well as the fast response time. Controlled Baseline One Assembly/Test Site One Fabrication Site Available in Military (-55C/125C) Temperature Range (1) Extended Product Life Cycle Extended Product-Change Notification Product Traceability * * * (1) Custom temperature ranges available TJ -40C to 125C OUTPUT VOLTAGE ORDERING INFORMATION (1) PACKAGE (2) ORDERABLE PART NUMBER TOP-SIDE MARKING 1.2 to 5.5 V TPS79101DBVREP PEUE 1.8 V TPS79118DBVREP PERE TPS79133DBVREP PESE TPS79147DBVREP PETE TPS79133MDBVTEP PIDM 3.3 V SOT23 (DBV) Reel of 3000 SOT23 (DBV) Reel of 250 4.7 V -55C to 125C (1) (2) 3.3 V For the most current package and ordering information, see the Package Option Addendum at the end of this document, or see the TI web site at www.ti.com. Package drawings, thermal data, and symbolization are available at www.ti.com/packaging. 1 2 Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. Bluetooth is a trademark of Bluetooth SIG, Inc.. PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of the Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. Copyright (c) 2003-2008, Texas Instruments Incorporated On products compliant to MIL-PRF-38535, all parameters are tested unless otherwise noted. On all other products, production processing does not necessarily include testing of all parameters. TPS79101-EP, TPS79118-EP TPS79133-EP, TPS79147-EP SGLS161A - APRIL 2003 - REVISED JUNE 2008 ............................................................................................................................................................ www.ti.com These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam during storage or handling to prevent electrostatic damage to the MOS gates. 2 EN 3 OUT 100 4 DBV PACKAGE (TOP VIEW) IN 1 6 90 BYPASS Fixed Option OUT GND 2 5 FB EN 3 4 BYPASS VI = 4.3 V Co = 10 F C(byp) = 0.01 F 80 IO = 100 mA 60 IO = 10 mA 40 30 Adjustable Option 20 10 100 1k 10 k 100 k f - Frequency - Hz 1M 0.4 0.35 VO = 4.3 V Co = 1 F C(byp) = 0.1 F 0.3 70 50 Hz GND 5 TPS79133 OUTPUT SPECTRAL NOISE DENSITY vs FREQUENCY Output Spectral Noise Density - 1 Ripple Rejection - dB IN TPS79133 RIPPLE REJECTION vs FREQUENCY V/ DBV PACKAGE (TOP VIEW) 10 M 0.25 0.2 IO = 100 mA 0.15 0.1 IO = 1 mA 0.05 0 100 1k 10 k f - Frequency - Hz 100 k ABSOLUTE MAXIMUM RATINGS (1) over operating free-air temperature range (unless otherwise noted) TPS79101, TPS79118, TPS79133, TPS79147 Input voltage range (2) -0.3 V to 6 V Voltage range at EN -0.3 V to VI + 0.3 V Voltage on OUT -0.3 V to 6 V Peak output current Internally limited ESD rating, HBM 2 kV ESD rating, CDM 500 V Continuous total power dissipation Operating virtual-junction temperature range, TJ Operating ambient temperature range, TA See Dissipation Rating Table All others -40C to 150C TPS79133MDBVTEP -55C to 125C All others -40C to 120C TPS79133MBVTEP -55C to 125C Storage temperature range, Tstg RJC (3) RJA (4) (1) (2) (3) (4) 2 -65C to 150C Low K 63.75C/W High K 63.75C/W Low K 256C/W High K 178.3C/W Stresses beyond those listed under "absolute maximum ratings" may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under "recommended operating conditions" is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability. All voltage values are with respect to network ground terminal. The JEDEC low-K (1s) board design used to derive this data was a 3-inch x 3-inch, two-layer board with 2-ounce copper traces on top of the board. The JEDEC high-K (2s2p) board design used to derive this data was a 3-inch x 3-inch, multilayer board with 1-ounce internal power and ground planes and 2-ounce copper traces on top and bottom of the board. Submit Documentation Feedback Copyright (c) 2003-2008, Texas Instruments Incorporated Product Folder Link(s): TPS79101-EP TPS79118-EP TPS79133-EP TPS79147-EP TPS79101-EP, TPS79118-EP TPS79133-EP, TPS79147-EP www.ti.com ............................................................................................................................................................ SGLS161A - APRIL 2003 - REVISED JUNE 2008 RECOMMENDED OPERATING CONDITIONS MI MA UNI N X T Input voltage, VI (1) 2.7 Continuous output current, IO (2) -40 125 Operating junction temperature, TJ (1) (2) 5.5 V 0 100 mA TPS79133MBVTEP -55 125 C To calculate the minimum input voltage for your maximum output current, use the following formula: VI(min) = VO(max) + VDO (max load) Continuous output current and operating junction temperature are limited by internal protection circuitry, but it is not recommended that the device operate under conditions beyond those specified in this table for extended periods of time. Notes: 1. See data sheet for absolute maximum and minimum recommended operating conditions. 2. Silicon operating-life design goal is 10 years at 105C junction temperature (does not include package interconnect life). 3. Enhanced plastic product disclaimer applies. 1000 Estimated Life (Years) Electromigration Fail Mode 100 Wirebond Voiding Fail Mode 10 1 100 110 120 130 140 150 160 Continuous T J (C) Figure 1. TPS79133 Operating Life Derating Chart Copyright (c) 2003-2008, Texas Instruments Incorporated Submit Documentation Feedback Product Folder Link(s): TPS79101-EP TPS79118-EP TPS79133-EP TPS79147-EP 3 TPS79101-EP, TPS79118-EP TPS79133-EP, TPS79147-EP SGLS161A - APRIL 2003 - REVISED JUNE 2008 ............................................................................................................................................................ www.ti.com ELECTRICAL CHARACTERISTICS over recommended operating free-air temperature range, (TJ = -40C to 125C), VI = VO(typ) + 1 V, IO = 1 mA, EN = 0 V, Co = 10 F, Co(byp) = 0.01 F (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TJ = 25C, 1.22 V VO 5.2 V TPS79101 0.98 VO TJ = 25C TPS79118 1.836 3.234 TJ = 25C 3.366 4.7 0 A < IO < 100 mA, 5.2 V < VI < 5.5 V 4.606 0 A < IO < 100 mA, TJ = 25C 4.794 170 0 A < IO < 100 mA 250 0 A < IO < 100 mA, TJ = 25C Load regulation 5 VO + 1 V < VI 5.5 V, TJ = 25C Output voltage line regulation (VO/VO) (2) BW = 100 Hz to 100 kHz, IO = 100 mA, TJ = 25C 0.12 C(byp) = 0.001 F 32 C(byp) = 0.0047 F 17 C(byp) = 0.01 F 16 C(byp) = 0.1 F 15 C(byp) = 0.001 F 53 C(byp) = 0.0047 F 67 RL 33 , CO = 1 F, TJ = 25C Output current limit VO = 0 V (1) 285 600 UVLO threshold VCC rising 2.25 2.65 UVLO hysteresis TJ = 25C, VCC rising (1) (2) s 98 100 mA V mV The minimum IN operating voltage is 2.7 V or VO(typ) + 1 V, whichever is greater. The maximum IN voltage is 5.5 V. The maximum output current is 100 mA. If VO 1.8 V then VImin = 2.7 V, VImax = 5.5 V: Line regulation (mV) + %V V O V Imax * 2.7 V 100 If VO 2.5 V then VImin = VO + 1 V, VImax = 5.5 V: Line regulation (mV) + %V 4 %/V VRMS Time, start-up (TPS79133) C(byp) = 0.01 F A mV 0.05 VO + 1 V < VI 5.5 V Output noise voltage (TPS79118) V 3.3 0 A < IO < 100 mA, 4.3 V < VI < 5.5 V Quiescent current (GND current) 1.02 VO 1.764 TJ = 25C TPS79147 UNIT 1.8 0 A < IO < 100 mA, 2.8 V < VI < 5.5 V TPS79133 MAX VO 0 A < IO < 100 mA (1), 1.22 V VO 5.2 V Output voltage TYP 1000 VO V Imax * VO ) 1 V 100 Submit Documentation Feedback 1000 Copyright (c) 2003-2008, Texas Instruments Incorporated Product Folder Link(s): TPS79101-EP TPS79118-EP TPS79133-EP TPS79147-EP TPS79101-EP, TPS79118-EP TPS79133-EP, TPS79147-EP www.ti.com ............................................................................................................................................................ SGLS161A - APRIL 2003 - REVISED JUNE 2008 ELECTRICAL CHARACTERISTICS (continued) over recommended operating free-air temperature range, (TJ = -40C to 125C), VI = VO(typ) + 1 V, IO = 1 mA, EN = 0 V, Co = 10 F, Co(byp) = 0.01 F (unless otherwise noted) PARAMETER TEST CONDITIONS Standby current EN = VI, 2.7 V < VI < 5.5 V High-level enable input voltage 2.7 V < VI < 5.5 V Low-level enable input voltage 2.7 V < VI < 5.5 V Input current (EN) EN = VI TPS79118 Power supply ripple rejection TPS79133 TPS79133 Dropout voltage (3) TPS79147 (3) MIN TYP MAX 0.07 1 2 A V -1 f = 100 Hz, TJ = 25C, IO = 10 mA 80 f = 100 Hz, TJ = 25C, IO = 100 mA 75 f = 10 kHz, TJ = 25C, IO = 100 mA 72 f = 100 kHz, TJ = 25C, IO = 100 mA 45 f = 100 Hz, TJ = 25C, IO = 10 mA 70 f = 100 Hz, TJ = 25C, IO = 100 mA 75 f = 10 kHz, TJ = 25C, IO = 100 mA 73 f = 100 kHz, TJ = 25C, IO = 100 mA 37 IO = 100 mA, TJ = 25C 50 IO = 100 mA 0.7 V 1 A dB 90 IO = 100 mA, TJ = 25C UNIT 38 IO = 100 mA mV 70 IN voltage equals VO(typ) - 100 mV. The TPS79118 dropout voltage is limited by the input voltage range limitations. Copyright (c) 2003-2008, Texas Instruments Incorporated Submit Documentation Feedback Product Folder Link(s): TPS79101-EP TPS79118-EP TPS79133-EP TPS79147-EP 5 TPS79101-EP, TPS79118-EP TPS79133-EP, TPS79147-EP SGLS161A - APRIL 2003 - REVISED JUNE 2008 ............................................................................................................................................................ www.ti.com FUNCTIONAL BLOCK DIAGRAM--ADJUSTABLE VERSION VOUT VIN Current Sense UVLO SHUTDOWN ILIM R1 _ GND + FB EN R2 UVLO Thermal Shutdown External to the Device 250 k Bandgap Reference VIN Vref Bypass FUNCTIONAL BLOCK DIAGRAM--FIXED VERSION VOUT VIN UVLO Current Sense GND SHUTDOWN ILIM _ R1 + EN UVLO R2 Thermal Shutdown VIN Bandgap Reference 250 k Vref Bypass TERMINAL FUNCTIONS TERMINAL NAME I/O DESCRIPTION ADJ FIXED BYPASS 4 4 EN 3 3 I The EN terminal is an input which enables or shuts down the device. When EN is a logic high, the device will be in shutdown mode. When EN is a logic low, the device will be enabled. FB 5 N/A I This terminal is the feedback input voltage for the adjustable device. GND 2 2 IN 1 1 I The IN terminal is the input to the device. OUT 6 5 O The OUT terminal is the regulated output of the device. 6 Submit Documentation Feedback An external bypass capacitor, connected to this terminal, in conjunction with an internal resistor, creates a low-pass filter to further reduce regulator noise. Regulator ground Copyright (c) 2003-2008, Texas Instruments Incorporated Product Folder Link(s): TPS79101-EP TPS79118-EP TPS79133-EP TPS79147-EP TPS79101-EP, TPS79118-EP TPS79133-EP, TPS79147-EP www.ti.com ............................................................................................................................................................ SGLS161A - APRIL 2003 - REVISED JUNE 2008 TYPICAL CHARACTERISTICS TPS79118 TPS79133 TPS79118 OUTPUT VOLTAGE vs OUTPUT CURRENT OUTPUT VOLTAGE vs OUTPUT CURRENT OUTPUT VOLTAGE vs JUNCTION TEMPERATURE 3.303 VI = 2.8 V Co = 10 F TJ = 25 C 3.302 V O - Output Voltage - V 1.801 1.8 1.799 1.798 1.797 1.815 3.301 3.3 3.299 3.298 20 40 60 80 IO - Output Current - mA 100 0 20 40 60 80 1.78 -40 -25 -10 5 100 20 35 50 65 80 95 110 125 TJ - Junction Temperature - C Figure 3. Figure 4. TPS79118 OUTPUT VOLTAGE vs JUNCTION TEMPERATURE GROUND CURRENT vs JUNCTION TEMPERATURE OUTPUT SPECTRAL NOISE DENSITY vs FREQUENCY Hz 260 VI = 4.3 V Co = 10 F Ground Current - A IO = 1 mA 3.3 3.29 IO = 100 mA 3.28 V/ 220 200 IO = 1 mA 180 IO = 100 mA 160 140 120 3.27 -40 -25 -10 5 100 20 35 50 65 80 95 110 125 -40 -25 -10 5 TJ - Junction Temperature - C 0.2 0.18 20 35 50 65 80 95 110 125 Output Spectral Noise Density - 240 3.31 0.14 0.12 IO = 100 mA 0.1 0.08 IO = 1 mA 0.06 0.04 0.02 0 100 TJ - Junction Temperature - C Figure 5. VI = 2.8 V Co = 1 F C(byp) = 0.1 F 0.16 1k 10 k f - Frequency - Hz Figure 6. 100 k Figure 7. TPS79118 TPS79118 TPS79133 OUTPUT SPECTRAL NOISE DENSITY vs FREQUENCY OUTPUT SPECTRAL NOISE DENSITY vs FREQUENCY OUTPUT SPECTRAL NOISE DENSITY vs FREQUENCY IO = 1 mA V/ Output Spectral Noise Density - 0.2 VI = 2.8 V Co = 10 F C(byp) = 0.1 F 0.15 IO = 100 mA 0.1 0.05 0 100 1k 10 k f - Frequency - Hz 100 k Figure 8. Copyright (c) 2003-2008, Texas Instruments Incorporated 1.2 IO = 0.001 F 1 VI = 2.8 V IO = 100 mA Co = 10 F IO = 0.1 F 0.6 IO = 0.01 F 0.4 0.2 0 100 1k 10 k f - Frequency - Hz VI = 4.3 V Co = 1 F C(byp) = 0.1 F 0.3 IO = 0.0047 F 0.8 0.4 0.35 Output Spectral Noise Density - Hz 0.25 Hz V O - Output Voltage - V IO = 100 mA 1.79 TPS79133 VI = 4.3 V Co = 10 F Hz 1.795 TPS79133 3.32 V/ IO = 1 mA 1.8 IO - Output Current - mA Figure 2. Output Spectral Noise Density - 1.81 1.785 3.297 0 VI = 2.8 V Co = 10 F 1.805 V/ V O - Output Voltage - V 1.802 1.82 VI = 4.3 V Co = 10 F TJ = 25 C V O - Output Voltage - V 1.803 100 k 0.25 0.2 IO = 100 mA 0.15 0.1 IO = 1 mA 0.05 0 100 Figure 9. 1k 10 k f - Frequency - Hz 100 k Figure 10. Submit Documentation Feedback Product Folder Link(s): TPS79101-EP TPS79118-EP TPS79133-EP TPS79147-EP 7 TPS79101-EP, TPS79118-EP TPS79133-EP, TPS79147-EP SGLS161A - APRIL 2003 - REVISED JUNE 2008 ............................................................................................................................................................ www.ti.com TYPICAL CHARACTERISTICS (continued) 0.25 IO = 100 mA 0.2 0.15 IO = 1 mA 0.1 0.05 0 100 1k 10 k f - Frequency - Hz IO = 0.001 F 1.6 1.4 IO = 0.0047 F 1.2 IO = 0.1 F 1 0.8 IO = 0.01 F 0.6 0.4 0.2 0 1k 100 100 k 10 k 30 VO = 1.8 V 20 10 0 0.001 V (RMS) Figure 13. TPS792133 OUTPUT IMPEDANCE vs FREQUENCY DROPOUT VOLTAGE vs JUNCTION TEMPERATURE DROPOUT VOLTAGE vs OUTPUT CURRENT 100 VI = 3.2 V, Co = 10 F 2 IO = 1 mA 1.5 1 IO = 100 mA 0.5 60 50 IO = 100 mA 40 30 20 0 100 1k 10 k 100 k 1M 10 M Figure 14. IO = 10 mA DROPOUT VOLTAGE vs INPUT VOLTAGE Minimum Required Input Voltage - V IO = 100 mA 100 TJ = 125C 80 TJ = 25C 40 TJ = -40C 20 4 4.5 60 TJ = 25C 50 40 30 20 0 -40 -25 -10 5 20 35 50 65 80 95 110 125 TJ - Junction Temperature - C 4.7 TJ = -40C 0 5 0.02 Submit Documentation Feedback 0.06 0.08 0.1 Figure 16. TPS79118 RIPPLE REJECTION vs FREQUENCY 90 IO = 1 mA 80 TJ = 125C 3.7 TJ = -40C 3.2 TJ = 25C 2.7 70 60 50 40 30 20 10 2 2.5 3 3.5 4 VO - Output Voltage - V 4.5 5 IO = 100 mA 0 100 VI = 2.8 V Co = 10 F C(byp) = 0.01 F 1k 10 k 100 k 1M 10 M f - Frequency - Hz VI - Input Voltage - V Figure 17. 0.04 IO - Output Current - A VI = 3.2 V Co = 10 F 4.2 2.2 1.5 3.5 TJ = 125C 70 10 5.2 120 3 80 Figure 15. MINIMUM REQUIRED INPUT VOLTAGE vs OUTPUT VOLTAGE TPS79101 60 VI = 3.2 V CO = 10 F 90 V DO - Dropout Voltage - mV V DO - Dropout Voltage - mV 70 f - Frequency - Hz 8 0.1 0.01 C(bypass) - Bypass Capacitance - F Figure 12. 10 V DO - Dropout Voltage - mV VO = 3.3 V 40 100 k 80 0 2.5 50 TPS79133 VI = 4.3 V Co = 10 F TJ = 25C 0 10 BW = 100 Hz to 100 kHz 60 TPS79133 3 2.5 70 f - Frequency - Hz Figure 11. Z o - Output Impedance - VI = 4.3 V IO = 100 mA Co = 10 F Ripple Rejection - dB Output Spectral Noise Density - 1.8 VI = 4.3 V Co = 10 F C(byp) = 0.1 F 0.3 2 ROOT MEAN SQUARED OUTPUT NOISE vs BYPASS CAPACITANCE RMS - Root Mean Squared Output Noise - Hz 0.35 V/ 0.4 Output Spectral Noise Density - Hz TPS79133 OUTPUT SPECTRAL NOISE DENSITY vs FREQUENCY V/ TPS79133 OUTPUT SPECTRAL NOISE DENSITY vs FREQUENCY Figure 18. Figure 19. Copyright (c) 2003-2008, Texas Instruments Incorporated Product Folder Link(s): TPS79101-EP TPS79118-EP TPS79133-EP TPS79147-EP TPS79101-EP, TPS79118-EP TPS79133-EP, TPS79147-EP www.ti.com ............................................................................................................................................................ SGLS161A - APRIL 2003 - REVISED JUNE 2008 TYPICAL CHARACTERISTICS (continued) TPS79118 TPS79118 TPS79133 RIPPLE REJECTION vs FREQUENCY RIPPLE REJECTION vs FREQUENCY RIPPLE REJECTION vs FREQUENCY 80 IO = 10 mA Ripple Rejection - dB 70 60 50 40 IO = 100 mA 30 20 0 100 1k 10 k 70 60 50 40 30 IO = 100 mA 20 VI = 2.8 V Co = 1 F C(byp) = 0.01 F 10 1M 0 100 10 M 1k 10 k 60 50 40 30 20 100 k 1M 10 M 10 1k 10 k 100 k f - Frequency - Hz 1M 10 M Figure 21. TPS79133 TPS79133 Figure 22. RIPPLE REJECTION vs FREQUENCY RIPPLE REJECTION vs FREQUENCY OUTPUT VOLTAGE, ENABLE VOLTAGE vs TIME (START-UP) 100 60 IO = 10 mA 30 20 20 Figure 23. Copyright (c) 2003-2008, Texas Instruments Incorporated 1 0 C(byp) = 0.001 F IO = 10 mA 50 30 10 M VI = 4.3 V VO = 3.3 V IO = 100 mA Co = 1 F TJ = 25C 2 60 40 1M IO = 100 mA 70 40 1k 10 k 100 k f - Frequency - Hz Enable Voltage - V 70 80 3 10 100 1k 10 k 100 k f - Frequency - Hz 1M 10 M V O - Output Voltage - V IO = 100 mA 100 VI = 4.3 V Co = 1 F C(byp) = 0.1 F 90 Ripple Rejection - dB 80 10 100 Figure 20. VI = 4.3 V CO = 1 F C(byp) = 0.01 F 50 IO = 10 mA TPS79133 100 90 IO = 100 mA 70 f - Frequency - Hz f - Frequency - Hz Ripple Rejection - dB 80 VI = 2.8 V Co = 1 F C(byp) = 0.1 F 10 100 k VI = 4.3 V Co = 10 F C(byp) = 0.01 F 90 IO = 10 mA Ripple Rejection - dB 80 Ripple Rejection - dB 100 90 90 3 2 C(byp) = 0.0047 F 1 C(byp) = 0.01 F 0 0 20 40 60 80 100 120 140 160 180 200 t - Time - s Figure 24. Figure 25. Submit Documentation Feedback Product Folder Link(s): TPS79101-EP TPS79118-EP TPS79133-EP TPS79147-EP 9 TPS79101-EP, TPS79118-EP TPS79133-EP, TPS79147-EP SGLS161A - APRIL 2003 - REVISED JUNE 2008 ............................................................................................................................................................ www.ti.com TPS79118 TPS79118 LINE TRANSIENT RESPONSE LOAD TRANSIENT RESPONSE VO - Change In Output Voltage - mV - Output Voltage - mV TYPICAL CHARACTERISTICS (continued) IO = 100 mA Co = 1 F C(byp) = 0.01 F - Input Voltage - V V O 10 0 0 -20 -40 Current Load - mA -10 100 2.8 V O - Output Voltage - mV 0 10 20 30 40 50 0 0 60 70 80 90 100 200 400 600 800 1 k 12 k 14 k 16 k 18 k 2 k t - Time - s t - Time - s Figure 26. Figure 27. TPS79133 TPS79133 LINE TRANSIENT RESPONSE LOAD TRANSIENT RESPONSE V - Change In O I O - Output Current - mA Output Voltage - mV V I 3.8 V I - Input Voltage - V VI = 2.8 V Co = 10 F 20 20 0 -20 5.3 4.3 IO = 100 mA Co = 1 F C(byp) = 0.01 F 0 5 10 15 20 dv 0.4 V + s dt 25 30 35 40 45 50 t - Time - s VI = 4.3 V Co = 10 F 20 0 -20 -40 100 0 0 50 100 150 200 250 300 350 400 450 500 t - Time - s TPS79118 TPS79118 TYPICAL REGIONS OF STABILITY EQUIVALENT SERIES RESISTANCE (ESR) vs OUTPUT CURRENT TYPICAL REGIONS OF STABILITY EQUIVALENT SERIES RESISTANCE (ESR) vs OUTPUT CURRENT 10 Region of Instability 1 0.1 Region of Instability 0.01 0.02 0.04 0.06 0.08 0.1 IO - Output Current - A Figure 30. Submit Documentation Feedback 100 Co = 0.47 F VI = 5.5 V TJ = -40 C to 125C Co = 1 F VI = 5.5 V TJ = -40 C to 125C ESR - Equivalent Series Resistance - 100 TPS79118 TYPICAL REGIONS OF STABILITY EQUIVALENT SERIES RESISTANCE (ESR) vs OUTPUT CURRENT 0 10 Figure 29. ESR - Equivalent Series Resistance - ESR - Equivalent Series Resistance - Figure 28. 10 Region of Instability 1 0.1 Region of Stability 0.01 0 0.02 0.04 0.06 0.08 IO - Output Current - A 0.1 100 Co = 10 F VI = 5.5 V TJ = -40 C to 125C 10 Region of Instability 1 0.1 Region of Stability 0.01 0 0.02 0.04 0.06 0.08 0.1 IO - Output Current - A Figure 31. Figure 32. Copyright (c) 2003-2008, Texas Instruments Incorporated Product Folder Link(s): TPS79101-EP TPS79118-EP TPS79133-EP TPS79147-EP TPS79101-EP, TPS79118-EP TPS79133-EP, TPS79147-EP www.ti.com ............................................................................................................................................................ SGLS161A - APRIL 2003 - REVISED JUNE 2008 APPLICATION INFORMATION The TPS791xx family of low-dropout (LDO) regulators have been optimized for use in noise-sensitive battery-operated equipment. The device features extremely low dropout voltages, high PSRR, ultralow output noise, low quiescent current (170 A typically), and enable-input to reduce supply currents to less than 1 A when the regulator is turned off. A typical application circuit is shown in Figure 33. TPS791xx 1 VI IN BYPASS OUT 0.1 F 4 5 VO 3 0.01 F EN + GND 1 F 2 Figure 33. Typical Application Circuit External Capacitor Requirements A 0.1-F or larger ceramic input bypass capacitor, connected between IN and GND and located close to the TPS791xx, is required for stability and to improve transient response, noise rejection, and ripple rejection. A higher-value electrolytic input capacitor may be necessary if large, fast-rise-time load transients are anticipated and the device is located several inches from the power source. Like all low dropout regulators, the TPS791xx requires an output capacitor connected between OUT and GND to stabilize the internal control loop. The minimum recommended capacitance is 1 F. Any 1-F or larger ceramic capacitor is suitable. The device is also stable with a 0.47-F ceramic capacitor with at least 75 m of ESR. The internal voltage reference is a key source of noise in an LDO regulator. The TPS791xx has a BYPASS pin which is connected to the voltage reference through a 250-k internal resistor. The 250-k internal resistor, in conjunction with an external bypass capacitor connected to the BYPASS pin, creates a low pass filter to reduce the voltage reference noise and, therefore, the noise at the regulator output. In order for the regulator to operate properly, the current flow out of the BYPASS pin must be at a minimum because any leakage current creates an IR drop across the internal resistor thus creating an output error. Therefore, the bypass capacitor must have minimal leakage current. For example, the TPS79118 exhibits approximately 15 VRMS of output voltage noise using a 0.1-F ceramic bypass capacitor and a 1-F ceramic output capacitor. Note that the output starts up slower as the bypass capacitance increases due to the RC time constant at the bypass pin that is created by the internal 250 k resistor and external capacitor. Board Layout Recommendation To Improve PSRR And Noise Performance To improve ac measurements like PSRR, output noise, and transient response, it is recommended that the board be designed with separate ground planes for VIN and VOUT, with each ground plane connected only at the ground pin of the device. In addition, the ground connection for the bypass capacitor should connect directly to the ground pin of the device. Copyright (c) 2003-2008, Texas Instruments Incorporated Submit Documentation Feedback Product Folder Link(s): TPS79101-EP TPS79118-EP TPS79133-EP TPS79147-EP 11 TPS79101-EP, TPS79118-EP TPS79133-EP, TPS79147-EP SGLS161A - APRIL 2003 - REVISED JUNE 2008 ............................................................................................................................................................ www.ti.com Power Dissipation and Junction Temperature Specified regulator operation is assured to a junction temperature of 125C; the maximum junction temperature should be restricted to 125C under normal operating conditions. This restriction limits the power dissipation the regulator can handle in any given application. To ensure the junction temperature is within acceptable limits, calculate the maximum allowable dissipation, PD(max), and the actual dissipation, PD, which must be less than or equal to PD(max). The maximum power-dissipation limit is determined using the following equation: T max * T A P + J D(max) R qJA (1) Where: TJmax is the maximum allowable junction temperature. RJA is the junction-to-ambient thermal resistance for the package (see the dissipation rating table). TA is the ambient temperature. The regulator dissipation is calculated using: P D + V *V I O I O (2) Power dissipation resulting from quiescent current is negligible. Excessive power dissipation triggers the thermal protection circuit. Programming the TPS79101 Adjustable LDO Regulator The output voltage of the TPS79101 adjustable regulator is programmed using an external resistor divider as shown in Figure 34. The output voltage is calculated using: V O +V ref 1 ) R1 R2 (3) Where: Vref = 1.2246 V typ (the internal reference voltage) Resistors R1 and R2 should be chosen for approximately 50-A divider current. Lower value resistors can be used for improved noise performance, but the solution consumes more power. Higher resistor values should be avoided as leakage current into/out of FB across R1/R2 creates an offset voltage that artificially increases/decreases the feedback voltage and thus erroneously decreases/increases VO. The recommended design procedure is to choose R2 = 30.1 k to set the divider current at 50 A, C1 = 15 pF for stability, and then calculate R1 using: R1 + V V O *1 ref R2 (4) In order to improve the stability of the adjustable version, it is suggested that a small compensation capacitor be placed between OUT and FB. For voltages <1.8 V, the value of this capacitor should be 100 pF. For voltages > 1.8 V, the approximate value of this capacitor can be calculated as: (3 10*7) (R1 ) R2) C1 + (R1 R2) (5) The suggested value of this capacitor for several resistor ratios is shown in the table below. If this capacitor is not used (such as in a unity-gain configuration) or if an output voltage < 1.8 V is chosen, then the minimum recommended output capacitor is 2.2 F instead of 1 F. 12 Submit Documentation Feedback Copyright (c) 2003-2008, Texas Instruments Incorporated Product Folder Link(s): TPS79101-EP TPS79118-EP TPS79133-EP TPS79147-EP TPS79101-EP, TPS79118-EP TPS79133-EP, TPS79147-EP www.ti.com ............................................................................................................................................................ SGLS161A - APRIL 2003 - REVISED JUNE 2008 TPS79101 VI OUTPUT VOLTAGE PROGRAMMING GUIDE IN 1 F EN 2V OUT VO C1 R1 0.7 V BYPASS FB GND 0.01 F 1 F OUTPUT VOLTAGE R1 R2 C1 2.5 V 31.6 k 30.1 k 22 pF 3.3 V 51 k 30.1 k 15 pF 3.6 V 59 k 30.1 k 15 pF R2 Figure 34. TPS79101 Adjustable LDO Regulator Programming Regulator Protection The TPS791xx PMOS-pass transistor has a built-in back diode that conducts reverse current when the input voltage drops below the output voltage (e.g., during power down). Current is conducted from the output to the input and is not internally limited. If extended reverse voltage operation is anticipated, external limiting might be appropriate. The TPS791xx features internal current limiting and thermal protection. During normal operation, the TPS791xx limits output current to approximately 400 mA. When current limiting engages, the output voltage scales back linearly until the overcurrent condition ends. While current limiting is designed to prevent gross device failure, care should be taken not to exceed the power dissipation ratings of the package or the absolute maximum voltage ratings of the device. If the temperature of the device exceeds approximately 165C, thermal-protection circuitry shuts it down. Once the device has cooled down to below approximately 140C, regulator operation resumes. Copyright (c) 2003-2008, Texas Instruments Incorporated Submit Documentation Feedback Product Folder Link(s): TPS79101-EP TPS79118-EP TPS79133-EP TPS79147-EP 13 PACKAGE OPTION ADDENDUM www.ti.com 17-Oct-2011 PACKAGING INFORMATION Orderable Device Status (1) Package Type Package Drawing Pins Package Qty Eco Plan (2) Lead/ Ball Finish MSL Peak Temp TPS79101DBVREP ACTIVE SOT-23 DBV 6 3000 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM TPS79118DBVREP ACTIVE SOT-23 DBV 5 3000 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM TPS79133DBVREP ACTIVE SOT-23 DBV 5 3000 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM TPS79133MDBVTEP ACTIVE SOT-23 DBV 5 250 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM TPS79147DBVREP ACTIVE SOT-23 DBV 5 3000 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM V62/03644-01YE ACTIVE SOT-23 DBV 6 3000 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM V62/03644-02XE ACTIVE SOT-23 DBV 5 3000 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM V62/03644-03XE ACTIVE SOT-23 DBV 5 3000 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM V62/03644-04XE ACTIVE SOT-23 DBV 5 3000 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM V62/03644-05XE ACTIVE SOT-23 DBV 5 250 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM (3) Samples (Requires Login) (1) The marketing status values are defined as follows: ACTIVE: Product device recommended for new designs. LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect. NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in a new design. PREVIEW: Device has been announced but is not in production. Samples may or may not be available. OBSOLETE: TI has discontinued the production of the device. (2) Eco Plan - The planned eco-friendly classification: Pb-Free (RoHS), Pb-Free (RoHS Exempt), or Green (RoHS & no Sb/Br) - please check http://www.ti.com/productcontent for the latest availability information and additional product content details. TBD: The Pb-Free/Green conversion plan has not been defined. Pb-Free (RoHS): TI's terms "Lead-Free" or "Pb-Free" mean semiconductor products that are compatible with the current RoHS requirements for all 6 substances, including the requirement that lead not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, TI Pb-Free products are suitable for use in specified lead-free processes. Pb-Free (RoHS Exempt): This component has a RoHS exemption for either 1) lead-based flip-chip solder bumps used between the die and package, or 2) lead-based die adhesive used between the die and leadframe. The component is otherwise considered Pb-Free (RoHS compatible) as defined above. Addendum-Page 1 PACKAGE OPTION ADDENDUM www.ti.com 17-Oct-2011 Green (RoHS & no Sb/Br): TI defines "Green" to mean Pb-Free (RoHS compatible), and free of Bromine (Br) and Antimony (Sb) based flame retardants (Br or Sb do not exceed 0.1% by weight in homogeneous material) (3) MSL, Peak Temp. -- The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder temperature. Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is provided. 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OTHER QUALIFIED VERSIONS OF TPS79101-EP, TPS79118-EP, TPS79133-EP, TPS79147-EP : * Catalog: TPS79101, TPS79118, TPS79133, TPS79147 * Automotive: TPS79101-Q1, TPS79118-Q1, TPS79133-Q1, TPS79147-Q1 NOTE: Qualified Version Definitions: * Catalog - TI's standard catalog product * Automotive - Q100 devices qualified for high-reliability automotive applications targeting zero defects Addendum-Page 2 PACKAGE MATERIALS INFORMATION www.ti.com 21-Jun-2012 TAPE AND REEL INFORMATION *All dimensions are nominal Device Package Package Pins Type Drawing SPQ Reel Reel A0 Diameter Width (mm) (mm) W1 (mm) B0 (mm) K0 (mm) P1 (mm) TPS79101DBVREP SOT-23 DBV 6 3000 180.0 9.0 TPS79118DBVREP SOT-23 DBV 5 3000 180.0 TPS79133DBVREP SOT-23 DBV 5 3000 180.0 TPS79147DBVREP SOT-23 DBV 5 3000 180.0 3.15 3.2 1.4 4.0 8.0 Q3 9.0 3.15 3.2 1.4 4.0 8.0 Q3 9.0 3.15 3.2 1.4 4.0 8.0 Q3 9.0 3.15 3.2 1.4 4.0 8.0 Q3 Pack Materials-Page 1 W Pin1 (mm) Quadrant PACKAGE MATERIALS INFORMATION www.ti.com 21-Jun-2012 *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) TPS79101DBVREP SOT-23 DBV 6 3000 182.0 182.0 20.0 TPS79118DBVREP SOT-23 DBV 5 3000 182.0 182.0 20.0 TPS79133DBVREP SOT-23 DBV 5 3000 182.0 182.0 20.0 TPS79147DBVREP SOT-23 DBV 5 3000 182.0 182.0 20.0 Pack Materials-Page 2 IMPORTANT NOTICE Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, modifications, enhancements, improvements, and other changes to its products and services at any time and to discontinue any product or service without notice. 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