A723 PRECISION VOLTAGE REGULATORS SLVS057D - AUGUST 1972 - REVISED JULY 1999 D D D D D D OR N PACKAGE (TOP VIEW) 150-mA Load Current Without External Power Transistor Adjustable Current-Limiting Capability Input Voltages up to 40 V Output Adjustable From 2 V to 37 V Direct Replacement for Fairchild A723C NC CURR LIM CURR SENS IN- IN+ REF VCC- description 1 14 2 13 3 12 4 11 5 10 6 9 7 8 NC FREQ COMP VCC+ VC OUTPUT VZ NC The A723 is a precision integrated-circuit voltage regulator, featuring high ripple rejection, excellent input and load regulation, excellent temperature stability, and low standby current. The circuit consists of a temperature-compensated reference-voltage amplifier, an error amplifier, a 150-mA output transistor, and an adjustable-output current limiter. The A723 is designed for use in positive or negative power supplies as a series, shunt, switching, or floating regulator. For output currents exceeding 150 mA, additional pass elements can be connected as shown in Figures 4 and 5. The A723C is characterized for operation from 0C to 70C. AVAILABLE OPTIONS PACKAGED DEVICES TA PLASTIC DIP (N) SMALL OUTLINE (D) 0C to 70C A723CN A723CD CHIP FORM (Y) A723Y The D package is available taped and reeled. Add the suffix R to the device type (e.g., A723CDR). Chip forms are tested at 25C. functional block diagram VCC+ FREQ COMP IN- Error Amp REF IN+ + Ref Amp VC Series Pass Transistor - TemperatureCompensated Reference Diode Current Source Current Limiter VCC- CURR LIM CURR SENS Regulated Output VZ 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. Copyright 1999, Texas Instruments Incorporated PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 1 A723 PRECISION VOLTAGE REGULATORS SLVS057D - AUGUST 1972 - REVISED JULY 1999 schematic VCC+ 500 1 k 25 k VC 1 k 15 k 15 k OUTPUT 6.2 V 100 VZ 5 pF 30 k FREQ COMP 300 5 k 150 20 k CURR LIM CURR SENS REF IN+ VCC- IN- Resistor and capacitor values shown are nominal. absolute maximum ratings over operating free-air temperature range (unless otherwise noted) Peak voltage from VCC+ to VCC- (tw 50 ms) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50 V Continuous voltage from VCC+ to VCC- . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 V Input-to-output voltage differential . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 V Differential input voltage to error amplifier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 V Voltage between noninverting input and VCC- . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 V Current from VZ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 mA Current from REF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 mA Package thermal impedance, JA (see Notes 1 and 2): D package . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86C/W N package . . . . . . . . . . . . . . . . . . . . . . . . . . . 101C/W Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds: D or N package . . . . . . . . . . . . . . . . 260C Storage temperature range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -65C to 150C 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. NOTES: 1. Maximum power dissipation is a function of TJ(max), JA, and TA. The maximum allowable power dissipation at any allowable ambient temperature is PD = (TJ(max) - TA)/JA. Operating at the absolute maximum TJ of 150C can impact reliability. 2. The package thermal impedance is calculated in accordance with JESD 51, except for through-hole packages, which use a trace length of zero. 2 POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 A723 PRECISION VOLTAGE REGULATORS SLVS057D - AUGUST 1972 - REVISED JULY 1999 recommended operating conditions MIN MAX 9.5 40 V Output voltage, VO 2 37 V Input-to-output voltage differential, VC - VO 3 38 V 150 mA 70 C Input voltage, VI Output current, IO A723C Operating free-air temperature range, TA 0 UNIT electrical characteristics at specified free-air temperature (see Notes 3 and 4) PARAMETER TEST CONDITIONS TA VI = 12 V to VI = 15 V VI = 12 V to VI = 40 V Input regulation Ripple rejection A723C MIN TYP MAX 25C 0.1 1 25C 1 5 VI = 12 V to VI = 15 V f = 50 Hz to 10 kHz, Cref = 0 0C to 70C 25C 74 f = 50 Hz to 10 kHz, Cref = 5 F 25C 86 25C -0.3 Output regulation Standby current 25C VI = 30 V, IO = 0 Short-circuit output current Output noise voltage 6.8 0C to 70C RSC = 10 , dB -2 -6 25C Temperature coefficient of output voltage mV/V 3 0C to 70C Reference voltage, Vref UNIT 7.15 7.5 2.3 4 0.003 0.015 VO = 0 Cref = 0 25C 65 BW = 100 Hz to 10 kHz, 25C 20 BW = 100 Hz to 10 kHz, Cref = 5 F 25C 2.5 mV/V V mA %/C mA V NOTES: 3. For all values in this table, the device is connected as shown in Figure 1 with the divider resistance as seen by the error amplifier 10 k. Unless otherwise specified, VI = VCC+ = VC = 12 V, VCC- = 0, VO = 5 V, IO = 1 mA, RSC = 0, and Cref = 0. 4. Pulse-testing techniques must be used that will maintain the junction temperature as close to the ambient temperature as possible. electrical characteristics, TA = 25C (see Notes 3 and 4) PARAMETER Input regulation Ripple rejection TEST CONDITIONS VI = 12 V to VI = 15 V VI = 12 V to VI = 40 V A723Y MIN TYP 0.1 1 f = 50 Hz to 10 kHz, Cref = 0 74 f = 50 Hz to 10 kHz, Cref = 5 F 86 MAX UNIT mV/V dB Output regulation -0.3 mV/V Reference voltage, Vref 7.15 V 2.3 mA 65 mA Standby current Short-circuit output current Output noise voltage VI = 30 V, RSC = 10 , IO = 0 VO = 0 BW = 100 Hz to 10 kHz, Cref = 0 20 BW = 100 Hz to 10 kHz, Cref = 5 F 2.5 V NOTES: 3. For all values in this table, the device is connected as shown in Figure 1 with the divider resistance as seen by the error amplifier 10 k. Unless otherwise specified, VI = VCC+ = VC = 12 V, VCC- = 0, VO = 5 V, IO = 1 mA, RSC = 0, and Cref = 0. 4. Pulse-testing techniques must be used that will maintain the junction temperature as close to the ambient temperature as possible. POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 3 A723 PRECISION VOLTAGE REGULATORS SLVS057D - AUGUST 1972 - REVISED JULY 1999 APPLICATION INFORMATION Table 1. Resistor Values (k) for Standard Output Voltages OUTPUT VOLTAGE (V) APPLICABLE FIGURES (SEE NOTE 5) 3.0 3.6 FIXED OUTPUT 5% OUTPUT ADJUSTABLE 10% (SEE NOTE 6) R1 (k) R2 (k) R1 (k) P1 (k ) P2 (k ) 1, 5, 6, 9, 11, 12 (4) 4.12 3.01 1.8 0.5 1.2 1, 5, 6, 9, 11, 12 (4) 3.57 3.65 1.5 0.5 1.5 5.0 1, 5, 6, 9, 11, 12 (4) 2.15 4.99 0.75 0.5 2.2 6.0 1, 5, 6, 9, 11, 12 (4) 1.15 6.04 0.5 0.5 2.7 9.0 2, 4, (5, 6, 9, 12) 1.87 7.15 0.75 1.0 2.7 12 2, 4, (5, 6, 9, 12) 4.87 7.15 2.0 1.0 3.0 15 2, 4, (5, 6, 9, 12) 7.87 7.15 3.3 1.0 3.0 28 2, 4, (5, 6, 9, 12) 21.0 7.15 5.6 1.0 2.0 45 7 3.57 48.7 2.2 10 39 75 7 3.57 78.7 2.2 10 68 100 7 3.57 105 2.2 10 91 250 7 3.57 255 2.2 10 240 -6 (see Note 7) 3, 10 3.57 2.43 1.2 0.5 0.75 -9 3, 10 3.48 5.36 1.2 0.5 2.0 -12 3, 10 3.57 8.45 1.2 0.5 3.3 -15 3, 10 3.57 11.5 1.2 0.5 4.3 -28 3, 10 3.57 24.3 1.2 0.5 10 -45 8 3.57 41.2 2.2 10 33 -100 8 3.57 95.3 2.2 10 91 -250 8 3.57 249 2.2 10 240 NOTES: 5. The R1/R2 divider can be across either VO or V(ref). If the divider is across V(ref), use the figure numbers without parentheses. If the divider is across VO, use the figure numbers in parentheses. 6. To make the voltage adjustable, the R1/R2 divider shown in the figures must be replaced by the divider shown below. R1 P1 R2 Adjustable Output Circuit 7. For Figures 3, 8, and 10, the device requires a minimum of 9 V between VCC+ and VCC- when VO is equal to or more positive than -9 V. 4 POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 A723 PRECISION VOLTAGE REGULATORS SLVS057D - AUGUST 1972 - REVISED JULY 1999 APPLICATION INFORMATION Table 2. Formulas for Intermediate Output Voltages OUTPUTS FROM 2 V TO 7 V SEE FIGURES 1, 5, 6, 9, 11, 12 (4) AND NOTE 5 VO +V OUTPUTS FROM 4 V TO 250 V SEE FIGURE 7 AND NOTE 5 + V2 R3 + R4 ) R2 R2 (ref) R1 OUTPUTS FROM 7 V TO 37 V SEE FIGURES 2, 4, (5, 6, 9, 11, 12) AND NOTE 5 VO +V R1 (ref) (ref) VO R2 - R1 R1 I (limit) OUTPUTS FROM -6 V TO -250 V SEE FIGURES 3, 8, 10 AND NOTES 5 AND 7 + - V2 R3 + R4 ) R2 (ref) VO R2 CURRENT LIMITING R1 ) R2 V [ 0.65 R SC FOLDBACK CURRENT LIMITING SEE FIGURE 6 I (knee) R1 I OS [V OR3 ) (R3 ) R4) 0.65 V R SCR4 V [ 0.65 R SC R3 ) R4 R4 NOTES: 5. The R1/R2 divider can be across either VO or V(ref). If the divider is across V(ref), use figure numbers without parentheses. If the divider is across VO, use the figure numbers in parentheses. 7. For Figures 3, 8, and 10, the device requires a minimum of 9 V between VCC+ and VCC- when VO is equal to or more positive than -9 V. VI VCC+ REF R1 VC OUTPUT A723 VZ CURR LIM RSC Regulated Output, VO CURR SENS IN+ C(ref) VCC- IN- FREQ COMP R2 NOTES: A. R3 R2 + R1 R1 ) R2 for a minimum aV R3 (see Notes A and B) 100 pF O B. R3 can be eliminated for minimum component count. Use direct connection (i.e., R3 = 0). Figure 1. Basic Low-Voltage Regulator (VO = 2 V to 7 V) POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 5 A723 PRECISION VOLTAGE REGULATORS SLVS057D - AUGUST 1972 - REVISED JULY 1999 APPLICATION INFORMATION VI VCC+ VC OUTPUT A723 REF VZ CURR LIM R3 (see Notes A and B) RSC Regulated Output, VO CURR SENS IN+ IN- FREQ COMP VCC- R1 R2 100 pF NOTES: A. R3 R2 + R1 R1 ) R2 for a minimum aV O B. R3 can be eliminated for minimum component count. Use direct connection (i.e., R3 = 0). Figure 2. Basic High-Voltage Regulator (VO = 7 V to 37 V) VI 2 k R2 VC OUTPUT A723 VZ REF CURR LIM VCC+ R4 = 3 k 2N5001 CURR SENS IN- IN+ VCC- FREQ COMP R3 = 3 k R1 100 pF Figure 3. Negative-Voltage Regulator 6 POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 Regulated Output, VO A723 PRECISION VOLTAGE REGULATORS SLVS057D - AUGUST 1972 - REVISED JULY 1999 APPLICATION INFORMATION VI VC VCC+ OUTPUT A723 VZ CURR LIM REF 2N3997 CURR SENS RSC IN+ IN- VCC- FREQ COMP Regulated Output, VO R1 500 pF R2 Figure 4. Positive-Voltage Regulator (External npn Pass Transistor) VI 60 2N5001 VCC+ OUTPUT A723 VZ CURR LIM REF R1 RSC CURR SENS IN+ VCC- R2 VC Regulated Output, VO IN- FREQ COMP 1000 pF Figure 5. Positive-Voltage Regulator (External pnp Pass Transistor) POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 7 A723 PRECISION VOLTAGE REGULATORS SLVS057D - AUGUST 1972 - REVISED JULY 1999 APPLICATION INFORMATION VI VCC+ R1 VC RSC OUTPUT A723 REF VZ CURR LIM R3 CURR SENS R4 IN+ IN- VCC- FREQ COMP Regulated Output, VO IOS VO lknee IO R2 1000 pF Figure 6. Foldback Current Limiting VI 2 k VCC+ 1N1826 R4 = 3 k R3 = 3 k VC 2N2580 OUTPUT A723 REF VZ CURR LIM R1 CURR SENS IN+ IN- R2 VCC- FREQ COMP RSC = 1 500 pF Figure 7. Positive Floating Regulator 8 POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 Regulated Output, VO A723 PRECISION VOLTAGE REGULATORS SLVS057D - AUGUST 1972 - REVISED JULY 1999 APPLICATION INFORMATION VI 10 k VCC+ 1N759 R2 R3 = 3 k VC 10 k OUTPUT A723 REF VZ CURR LIM 2N5287 CURR SENS IN+ IN- VCC- FREQ COMP R1 R4 = 3 k 500 pF Regulated Output, VO Figure 8. Negative Floating Regulator VI 3 k 2N5153 2N5005 VCC+ REF R1 IN+ R2 OUTPUT A723 VZ CURR LIM L = 1.2 mH (see Note A) 51 CURR SENS 1 k 0.1 F VC 1 M Regulated Output, VO IN- VCC- FREQ COMP 1N4005 NOTE A: L is 40 turns of No. 20 enameled copper wire wound on Ferroxcube P36/22-3B7 potted core, or equivalent, with a 0.009-inch air gap. Figure 9. Positive Switching Regulator POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 9 A723 PRECISION VOLTAGE REGULATORS SLVS057D - AUGUST 1972 - REVISED JULY 1999 APPLICATION INFORMATION VI 1 k (see Note A) R3 = 3 k VCC+ R2 0.1 F REF 2N3997 220 VC OUTPUT A723 VZ CURR LIM 2N5004 CURR SENS 1 k IN+ R1 IN- FREQ COMP VCC- 1 M 15 pF R4 = 3 k L = 1.2 mH (see Note B) 1N4005 100 F Regulated Output, VO NOTES: A. The device requires a minimum of 9 V between VCC+ and VCC- when VO is equal to or more positive than -9 V. B. L is 40 turns of No. 20 enameled copper wire wound on Ferroxcube P36/22-3B7 potted core, or equivalent, with a 0.009-inch air gap. Figure 10. Negative Switching Regulator VI VCC+ R1 VC RSC OUTPUT A723 REF VZ CURR LIM Regulated Output, VO CURR SENS IN+ IN- VCC- FREQ COMP R2 2 k 2N4422 2 k 1000 pF Input From Series 54/74 Logic NOTE A: A current-limiting transistor can be used for shutdown if current limiting is not required. Figure 11. Remote Shutdown Regulator With Current Limiting 10 POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 A723 PRECISION VOLTAGE REGULATORS SLVS057D - AUGUST 1972 - REVISED JULY 1999 APPLICATION INFORMATION VI VCC+ REF R1 IN+ 100 VC OUTPUT A723 VZ CURR LIM 1 k 2N3997 CURR SENS Regulated Output, VO IN- VCC- FREQ COMP R2 5000 pF Figure 12. Shunt Regulator POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 11 PACKAGE OPTION ADDENDUM www.ti.com 4-Jun-2007 PACKAGING INFORMATION Orderable Device Status (1) Package Type Package Drawing Pins Package Eco Plan (2) Qty UA723CD ACTIVE SOIC D 14 50 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM UA723CDE4 ACTIVE SOIC D 14 50 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM UA723CDG4 ACTIVE SOIC D 14 50 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM UA723CDR ACTIVE SOIC D 14 2500 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM UA723CDRE4 ACTIVE SOIC D 14 2500 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM UA723CDRG4 ACTIVE SOIC D 14 2500 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM Lead/Ball Finish MSL Peak Temp (3) UA723CJ OBSOLETE CDIP J 14 TBD Call TI UA723CN ACTIVE PDIP N 14 25 Pb-Free (RoHS) CU NIPDAU Call TI N / A for Pkg Type UA723CNE4 ACTIVE PDIP N 14 25 Pb-Free (RoHS) CU NIPDAU N / A for Pkg Type UA723CNSR ACTIVE SO NS 14 2000 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM UA723CNSRE4 ACTIVE SO NS 14 2000 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM UA723CNSRG4 ACTIVE SO NS 14 2000 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM (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. 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. TI bases its knowledge and belief on information provided by third parties, and makes no representation or warranty as to the accuracy of such information. Efforts are underway to better integrate information from third parties. TI has taken and continues to take reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on incoming materials and chemicals. TI and TI suppliers consider certain information to be proprietary, and thus CAS numbers and other limited information may not be available for release. Addendum-Page 1 PACKAGE OPTION ADDENDUM www.ti.com 4-Jun-2007 In no event shall TI's liability arising out of such information exceed the total purchase price of the TI part(s) at issue in this document sold by TI to Customer on an annual basis. Addendum-Page 2 PACKAGE MATERIALS INFORMATION www.ti.com 14-Jul-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) W Pin1 (mm) Quadrant UA723CDR SOIC D 14 2500 330.0 16.4 6.5 9.0 2.1 8.0 16.0 Q1 UA723CNSR SO NS 14 2000 330.0 16.4 8.2 10.5 2.5 12.0 16.0 Q1 Pack Materials-Page 1 PACKAGE MATERIALS INFORMATION www.ti.com 14-Jul-2012 *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) UA723CDR UA723CNSR SOIC D 14 2500 367.0 367.0 38.0 SO NS 14 2000 367.0 367.0 38.0 Pack Materials-Page 2 IMPORTANT NOTICE Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, enhancements, improvements and other changes to its semiconductor products and services per JESD46, latest issue, and to discontinue any product or service per JESD48, latest issue. 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