Low Dropout Voltage Regulators CORPORATION CLM2931 PRODUCT DESCRIPTION FEATURES * 5V, 3.3V, 3.5V, 4.0V, and 4.5V Versions Available * Output Current in Excess of 100mA Differential is Less Than 0.6V * Input-Output * Mirror-Image Insertion Protection * Internal Thermal Overload Protection as Adjustable with TTL Compatible Switch * Available * Similar to Industry Standard LM2931 * Reverse Battery Protection Circuit Protection * Short * 60V Load Dump Protection * -50V Reverse Transient Protection The CLM2931 is a positive low power voltage regulator. This device is an excellent choice for use in battery-powered applications such as cordless telephones, radio control systems, and portable computers. The CLM2931 features very low quiescent current (0.4mA) and very low drop output voltage (typ. 50mV at light load and 300mV at 100mA). other features include the logic-compatible on/off input which enables the regulator to be switched on and off. The regulator output voltage may be internally pin-strapped for a 5V, 3V, 3.3V, 3.5V, 4.0V, 4.5V or programmed from 3V to 24V with an external pair of resistors. Using Calogic's design, process and testing technique make the CLM2931 superior over similar products. APPLICATIONS Instrumentation * Portable * Radio Control Systems * Cordless Telephones ORDERING INFORMATION PART PACKAGE TEMPERATURE RANGE CLM2931AS-X Plastic SOIC (8-Pin) Industrial X = Output Voltage, 5V = standard product, for all other ranges contact factory. PIN CONNECTIONS 8-PIN SURFACE MOUNT, FIX OUTPUT OUTPUT 1 GND 2 8 INPUT 7 GND CLM2931 GND 3 6 GND NC 4 5 NC TOP VIEW 8-PIN SRFACE MOUNT, ADJ. OUTPUT OUTPUT 1 GND 2 8 INPUT 7 GND CLM2931 GND 3 6 GND ADJ. 4 5 ON/OFF TOP VIEW 1M-07 CALOGIC CORPORATION, 237 Whitney Place, Fremont, California 94539, Telephone: 510-656-2900, FAX: 510-651-3025 CLM2931 CORPORATION ABSOLUTE MAXIMUM RATINGS Operating Junction Temperature Range . . . . . . . -40 to +85oC Input Supply Voltage . . . . . . . . . . . . . . . . . . . . . . 0.30 to +26V ESD Rating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2KV Power Dissipation . . . . . . . . . . . . . . . . . . . . . Internally Limited Lead Temp. (Soldering, 5 Seconds) . . . . . . . . . . . . . . . 260 oC Storage Temperature Range . . . . . . . . . . . . . . . -65 to +150oC ELECTRICAL CHARACTERISTICS: VS = 14V, TA = 25oC, IO = 10mA, C2 = 100F, unless otherwise specified. (Note 1) CLM2931A PARAMETER MIN 3V VERSION Output Voltage 3.3V VERSION Output Voltage CLM2931 MAX MIN CLM2931A-3 2.94 2.88 3.0 3.0 3.23 3.20 3.30 3.30 3.06 3.12 2.91 2.85 5.0 CONDITIONS (Note 2) UNITS MAX 3.36 3.39 3.0 3.0 3.09 3.15 V V 6V<VIN<26V, IO = 100mA Over Temp. 3.39 3.43 V V 6V<VIN<26V, IO = 100mA Over Temp. 5.25 5.50 V V 6V<VIN<26V, IO = 100mA Over Temp. CLM2931-3.3 3.20 3.16 CLM2931A-5 4.81 4.75 TYP CLM2931-3 CLM2931A-3.3 5V VERSION Output Voltage TYP 3.30 3.30 CLM2931-5 5.19 5.25 4.75 4.50 5.0 ALL VOLTAGE OPTIONS Long Term Stability 20 Line Regulation 2.0 4.0 10 30 4.0 30 Load Regulation 14 50 14 Dropout Voltage 0.05 0.07 0.3 0.2 0.1 0.6 0.4 15 1.0 Quiescent Current 20 mV/1000 mV 9V<VIN<16V 6V<VIN<26V 50 mV 5mA<IO<100mA 0.05 0.07 0.3 0.2 0.1 0.6 V V V 0.4 15 1.0 mA mA IO = 10mA IO = 50mA IO = 100mA IO<10mA,6V<VIN<26V, -40 oC<TJ<125oC IO = 100mA, VIN = 14V, TJ = 25oC Maximum Operational Input Current 26 33 26 33 V Maximum Line Transient 60 70 70 50 V RL = 500, VO<5.5V, 100ms Reverse Polarity Input Voltage, DC -15 -30 -15 30 V VO>-0.3V, RL = 500 Reverse Polarity Input Voltage, Transient -50 -80 -50 -80 V 1% Duty Cycle, <100ms, RL = 500 Output Noise Voltage 500 500 Vrms Ripple Rejection 80 80 dB 10Hz-100kHz, COUT = 100F fO = 120Hz CALOGIC CORPORATION, 237 Whitney Place, Fremont, California 94539, Telephone: 510-656-2900, FAX: 510-651-3025 CLM2931 CORPORATION ADJUSTABLE VERSION ONLY: VIN = 14V, VO = 3V, IO = 10mA, R1 = 27k, C2 = 100F, TJ = 25o PARAMETER Output Voltage Range CLM2931C MIN TYP 3.0 MAX 24 UNITS CONDITIONS V Line Regulation 0.2 1.5 mV VOUT + 0.6V<VIN<26V Load Regulation 0.3 1.0 mV 5mA<IO<100mA Output Impedance 40 Quiescent Current 0.4 15 0.8 m/V 1.0 1.0 mA mA mA 100mADC and 10mArms, 100Hz-10kHz IO = 10mA IO = 100mA During Shutdown RL = 500 Output Noise Voltage 100 Vrms Long Term Stability 0.4 %/1000h Ripple Rejection 0.02 %/V fO = 120Hz Dropout Voltage 0.05 0.3 V V IO < 10mA IO = 100mA Maximum Operational Input Voltage 26 0.2 0.6 33 V 10Hz-100kHz IO = 10mA, Reference Voltage <1.5V Maximum Line Transient 60 70 V Reverse Polarity Input Voltage, DC -15 -30 V VO>-0.3V, RL = 500 Reverse Polarity Input Voltage, Transient -50 -80 V 1% Duty Cycle, T<100ms, RL = 500 On/Off Threshold Current Threshold Votage On Off Note 1: Note 2: Note 3: Note 4: 3.25 20 50 A 2.0 2.2 1.2 V VO = 3V See TYPICAL APPLICATIONS notes to ensure constant junction temperature, low duty cycle pulse testing used. All limits are at 25 oC or over the full operating temperature junction range of -40oC to +125oC. The maximum power dissipation is a function of maximum junction temperature, total thermal resistance, and ambient temperature. Human body model, 100F discharged through 1.5K. APPLICATION HINTS The CLM2931 requires an output capacitor for device stability. The value required varies greatly depending upon the application circuit and other factors. The high frequency characteristics of electolytic capacitors depend greatly on the type and also on the manufacturer. Sometimes only bench testing is the only means to determine the proper capacitor type and value. The high quality 100F aluminum electrolytic covers all general application circuits, this stability can be obtained with a tantalum electrolytic value of 47F. Another critical point of electrolytic characteristics is its performance over temperature. The CLM2931 is designed to operate starting at -40oC which may not be true in the case of electrolytic. Higher temperatures are generally no problem. The electrolytic type in aluminum will freeze at around -30oC. This could cause an oscillation at output of regulator. At a lower temperature requirement by many applications the capacitor should maintain its performance. So as a result, for an application which regulator junction temperature does not exceed 25oC, the output capacitor can be reduced by the factor of two over the value needed for the entire temperature range. Other points with linear regulators is that the twitch higher output current stability decreases. In most applications the CLM2931 is operating at a few milliamps. In these applications the output capacitance can be further reduced. For example, when the regulator is running at 10mA output current the output capacitance value is half compared to the same regulator that is running at 100mA. With the CLM2931CT adjustable regulator, the minimum value of output capacitance is a function of the output voltage. The value decreases with higher output voltages, since the internal loop gain is reduced. The worst case occurs at the lower temperature and maximum operating currents, the entire circuit and the electrolytic, should be cooled down to the minimum temperature. The minimum of 0.6 volts required at the input of regulator above the output to keep the power dissipation and die heating to its minimum. After the value for the capacitor has been determined for actual use, the value should be doubled. CALOGIC CORPORATION, 237 Whitney Place, Fremont, California 94539, Telephone: 510-656-2900, FAX: 510-651-3025 CLM2931 CORPORATION TYPICAL APPLICATIONS V CC R3 51k CLM2931 FIXED OUTPUT C1 0.1 VOUT REGULATED OUTPUT CLM2931 GND + IQ OUT V OFF VIN UNREGULATED INPUT IN ON/OFF C1 0.1F R1 20k CLM2931 ADJUSTABLE C2 100F ADJ ON C2 100 F OUT GND R2 1M-06 CLM2931 FIXED OUTPUT VOUT = Reference Voltage x R1 + R2 1M-09 R1 CLM2931 ADJUSTABLE OUTPUT SCHEMATIC DIAGRAM VIN Q13 1 5 Q12 1 R6 6 Q1 1 Q2 R7 30k Q10 Q3 R16 6k Q15 Z1 Z2 R19 200 ON/OFF Z3 Z4 R3 32k R1 5V: 20k ADJ: ADJUST R11 50k R8 3k VOUT R13 40k R4 3.6k Q4 R10 30k Q5 4x D15 140k R12 140k Q8 Q9 Q6 Z6 D1 R5 2.1k R2 5V: 100k ADJ: R14 184k Q7 Q11 Q16 R16 14.7k GND 1M-08 CALOGIC CORPORATION, 237 Whitney Place, Fremont, California 94539, Telephone: 510-656-2900, FAX: 510-651-3025 CLM2931 CORPORATION TYPICAL PERFORMANCE CHARACTERISTICS INPUT VOLTAGE (V) 1 0.1 0.01 1 10 100 1k 10k 100k FREQUENCY (Hz) 1M CO = 100F R L = 500 6 4 2 0 -2 -100 0 100 200 300 400 TIME (ms) INPUT-OUTPUT DIFFERENTIAL (V) LM2031C ADJUSTABLE 1.28 = 150ms 1M-22 REFERENCE VOLTAGE 1.30 REFERENCE VOLTAGE (V) 70 60 50 40 30 20 10 0 OUTPUT VOLTAGE (V) OUPUT IMPEDANCE () LM2931 - 3.0 IO = 10mA 1.26 1.24 1.22 1.20 1.18 1.16 1.14 1.12 500 1M-23 DROPOUT VOLTAGE 0.6 0.5 IO = 100mA 0.4 0.3 IO = 50mA 0.2 IO = 10mA 0.1 0 1.10 0 3 0 6 9 12 15 18 21 24 1M-24 OUTPUT VOLTAGE (V) DROPOUT VOLTAGE 0.6 6.0 40 80 120 JUNCTION TEMPERATURE (C) 1M-25 LOW VOLTAGE BEHAVIOR LM2931-5.0 IO = 100mA 0.5 OUTPUT VOLTAGE (V) INPUT-OUTPUT DIFFERENTIAL (V) OPERATION DURING LOAD DUMP OUTPUT IMPEDANCE 10 0.4 0.3 0.2 0.1 0 5.0 4.0 3.0 2.0 1.0 0 50 OUTPUT CURRENT (mA) 100 1M-26 2.0 3.0 4.0 5.0 INPUT VOLTAGE (V) 6.0 1M-27 CALOGIC CORPORATION, 237 Whitney Place, Fremont, California 94539, Telephone: 510-656-2900, FAX: 510-651-3025 CLM2931 CORPORATION TYPICAL PERFORMANCE CHARACTERISTICS (continued) PEAK OUTPUT CURRENT 500 TJ = 25C 400 TJ = 85C 300 TJ = -40C 200 100 0 0 10 20 INPUT VOLTAGE (V) VIN = 14V 25 20 15 10 5 0 30 1M-28 QUIESCENT CURRENT 25 QUIESCENT CURRENT 30 QUIESCENT CURRENT (mA) OUTPUT CURRENT (mA) 600 0 30 60 OUTPUT CURRENT (mA) 90 1M-29 MAXIMUM POWER DISSIPATION (SO-8) 0.9 15 10 3 IO = 50mA 2 IO = 0mA 1 0 -40 POWER DISSIPATION (W) QUIESCENT CURRENT (mA) 1.0 20 0.4 0.3 0.2 0 10 20 30 40 50 60 70 80 90 AMBIENT TEMPERATURE (C) 1M-31 MAXIMUM POWER DISSIPATION (TO-92) 0.9 INFINITE HEATSINK 16 14 12 10C/W HEAT SINK 8 6 NO HEAT SINK POWER DISSIPATION (W) POWER DISSIPATION (W) 0.5 1.0 20 4 0.6 0 MAXIMUM POWER DISSIPATION (TO-220) 10 0.7 0.1 0 40 80 120 JUNCTION TEMPERATURE (C) 1M-30 22 18 0.8 0.8 0.7 0.125" LEAD LENGTH FROM PC BOARD 0.6 0.5 0.4 0.3 0.4" LEAD LENGTH FROM PC BOARD 0.2 0.1 2 0 0 0 10 20 30 40 50 60 70 80 90 100 AMBIENT TEMPERATURE (C) 1M-32 0 10 20 30 40 50 60 70 80 90 AMBIENT TEMPERATURE (C) 1M-33 CALOGIC CORPORATION, 237 Whitney Place, Fremont, California 94539, Telephone: 510-656-2900, FAX: 510-651-3025