S E M I C O N D U C T O R CA723, CA723C Voltage Regulators Adjustable from 2V to 37V at Output Currents Up to 150mA Without External Pass Transistors April 1994 Features Description • Up to 150mA Output Current • Positive and Negative Voltage Regulation • Regulation in Excess of 10A with Suitable Pass Transistors • Input and Output Short-Circuit Protection • Load and Line Regulation . . . . . . . . . . . . . . . . . . . 0.03% • Direct Replacement for 723 and 723C Industry Types • Adjustable Output Voltage . . . . . . . . . . . . . . . 2V to 37V The CA723 and CA723C are silicon monolithic integrated circuits designed for service as voltage regulators at output voltages ranging from 2V to 37V at currents up to 150mA. Applications • • • • • The CA723 and CA723C may be used with positive and negative power supplies in a wide variety of series, shunt, switching, and floating regulator applications. They can provide regulation at load currents greater than 150mA and in excess of 10A with the use of suitable n-p-n or p-n-p external pass transistors. Series and Shunt Voltage Regulator Floating Regulator Switching Voltage Regulator High-Current Voltage Regulator Temperature Controller The CA723 and CA723C are supplied in the 10 lead TO-100 metal can(T suffix), and the 14 lead dual-in-line plastic package (E suffix), and are direct replacements for industry types LM723, LM723C in packages with similar terminal arrangements. Ordering Information PART TEMPERATURE CA723E -55oC +125oC CA723T -55oC to +125oC to CA723CE 0oC CA723CT 0oC to +70oC to +70oC Each type includes a temperature-compensated reference amplifier, an error amplifier, a power series pass transistor, and a current-limiting circuit. They also provide independently accessible inputs for adjustable current limiting and remote shutdown and, in addition, feature low standby current drain, low temperature drift, and high ripple rejection. PACKAGE 14Lead Plastic DIP 10 Pin Metal Can 14 Lead Plastic DIP 10 Pin Metal Can Pinouts Functional Block Diagram CA723 (PDIP) TOP VIEW 14 NC NC 1 CURRENT 2 LIMIT 13 FREQ COMP CURRENT 3 SENSE 12 V+ UNREG INPUT INV 4 INPUT - VREF TEMPERATURECOMPENSATED ZENER + 10 VO VOLT REF 6 VOLT REF AMP FREQUENCY UNREGULATED COMPENSATION INPUT INVERTING INPUT 11 VC ERROR AMP NON-INV 5 INPUT V+ VC - VREF SERIES PASS TRANSISTOR ERROR AMP + NON-INVERTING INPUT 9 VZ VO REGULATED OUTPUT VZ 8 NC V- 7 V- CA723C (CAN) TOP VIEW CURRENT LIMIT CURRENT SENSE CURRENT LIMITER CURRENT LIMIT TAB 10 CURRENT FREQ 9 COMP SENSE 1 INV INPUT NON-INV INPUT 2 V+ 8 UNREG INPUT + ERROR AMP - 3 7 VC VOLT REF VREF 6 4 5 VO V-, (CASE INTERNALLY CONNECTED TO TERM 5) CAUTION: These devices are sensitive to electrostatic discharge. Users should follow proper I.C. Handling Procedures. Copyright © Harris Corporation 1994 7-3 File Number 788.3 Specifications CA723, CA723C Absolute Maximum Ratings Operating Conditions DC Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40V (Between V+ and V- Terminals) Pulse Voltage for 50ms Pulse Width (Between V+ and V- Terminals) . . . . . . . . . . . . . 50V Differential Input-Output Voltage . . . . . . . . . . . . . . . . . . . . . . . . 40V Differential Input Voltage Between Inverting and Noninverting Inputs . . . . . . . . . . . . . . . . ±5V Between Noninverting Input and V- . . . . . . . . . . . . . . . . . . . . . 8V Current From Zener Diode Terminal (VZ) . . . . . . . . . . . . . . . . . 25mA Thermal Resistance θJA θJC Plastic DIP Package . . . . . . . . . . . . . . . . 120oC/W Metal Can . . . . . . . . . . . . . . . . . . . . . . . . 136oC/W 65oC/W Device Dissipation CA723T, CA723CT, Up to TA = +25oC. . . . . . . . . . . . . . . . 900mW CA723E, CA723CE, Up to TA = +25oC . . . . . . . . . . . . . . 1000mW CA723T, CA723CT, Above TA = +25oC . . . . . . . . . . . . . 7.4mW/oC CA723E, CA723CE, Above TA = +25oC . . . . . . . . . . . . 8.3mW/oC Ambient Temperature Range Operating Temperature Range . . . . . . . . . . . . . . -55oC to +125oC Storage Temperature Range . . . . . . . . . . . . . . . . -65oC to +150oC Lead Temperature, During Soldering . . . . . . . . . . . . . . . . . . +265oC At a distance 1/16” ± 1/32” (1.59mm ± 0.79mm) from case for 10s max CAUTION: Stresses above those listed in “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress only rating and operation of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied. DC Electrical Specifications TA = +25oC, V+ = VC = VI = 12V, V- = 0, VO = 5V, IL = 1mA, C1 = 100pF, CREF = 0, RSCP = 0, Unless Otherwise Specified. Divider impedance R1 R2 ÷ R1 + R2 at noninverting input, Terminal 5 = 10kΩ. (Figure 20) CA723 PARAMETERS TEST CONDITION CA723C MIN TYP MAX MIN TYP MAX UNITS - 2.3 3.5 - 2.3 4 mA 9.5 - 40 9.5 - 40 V Output Voltage Range, VO 2 - 37 2 - 37 V Differential Input-Output Voltage, VI - VO 3 - 38 3 - 38 V 6.95 7.15 7.35 6.8 7.15 7.5 V - 0.02 0.2 - 0.1 0.5 % VO VI = 12V to 15V - 0.01 0.1 - 0.01 0.1 % VO VI = 12V to 15V, TA = -55oC to +125oC - - 0.3 - - - % VO VI = 12V to 15V, TA = 0oC to +70oC - - - - - 0.3 % VO IL = 1mA to 50mA - 0.03 0.15 - 0.03 0.2 % VO IL = 1mA to 50mA, TA = -55oC to +125oC - - 0.6 - - - % VO IL = 1mA to 50mA, TA = 0oC to +70oC - - - - - 0.6 % VO Output-Voltage Temperature Coefficient, ∆VO TA = -55oC to +125oC - 0.002 0.015 - - - %/oC TA = 0oC to +70oC - - - - 0.003 0.015 %/oC Ripple Rejection (Note 2) f = 50Hz to 10kHz - 74 - - 74 - dB f = 50Hz to 10kHz, CREF = 5µF - 86 - - 86 - dB Short Circuit Limiting Current, ILIM RSCP = 10Ω, VO = 0 - 65 - - 65 - mA Equivalent Noise RMS Output Voltage, VN (Note 2) BW = 100Hz to 10kHz, CREF = 0 - -20 - - 20 - µV BW = 100Hz to 10kHz, CREF = 5µF - 2.5 - - 2.5 - µV DC CHARACTERISTICS Quiescent Regulator Current, IQ IL = 0, VI = 30V Input Voltage Range, VI Reference Voltage, VREF Line Regulation (Note 1) Load Regulation (Note 1) VI = 12V to 40V NOTES: 1. Line and load regulation specifications are given for condition of a constant chip temperature. For high dissipation condition, temperature drifts must be separately taken into account. 2. For CREF (See Figure 20) 7-4 CA723, CA723C V+ VC UNREGULATED INPUT R1 500Ω R5 1kΩ R4 1kΩ R3 25kΩ Q8 Q3 Q7 D3 D1 6.2V R2 15kΩ Q14 Q4 Q15 Q9 R12 15kΩ R6 100Ω C1 5pF Q1 D4 Q10 R7 30kΩ R9 300Ω R8 5kΩ VREF VZ Q13 D2 6.2V Q6 VO Q11 Q12 Q5 R10 20kΩ R11 150Ω FREQUENCY COMPENSATION CURRENT LIMIT Q16 CURRENT SENSE NON-INVERTING VINPUT INVERTING INPUT FIGURE 1. EQUIVALENT SCHEMATIC DIAGRAM OF THE CA723 AND CA723C MAX JUNCTION TEMP (TJ) = +150oC THERMAL RESISTANCE = 150oC/W QUIESCENT DISSIPATION (PQ) = 60mW (NO HEAT SINK) 150 AMBIENT TEMPERATURE (TA) = +25oC 100 OUTPUT VOLTAGE (VO) = 5V INPUT VOLTAGE (VI) = 12V SHORT CIRCUIT PROTECTION RESISTANCE (RSCP) = 0 0.05 LOAD REGULATION (VO) MAXIMUM LOAD CURRENT (mA) Typical Performance Curves (CA723) 50 0 AMBIENT TEMPERATURE (TA) = +25oC -0.05 -55oC -0.1 +125oC -0.15 +125oC -0.2 0 0 10 20 30 DIFFERENTIAL INPUT - OUTPUT VOLTAGE (V) 40 0 FIGURE 2. MAX LOAD CURRENT vs DIFFERENTIAL INPUTOUTPUT VOLTAGE 0.05 LOAD REGULATION (VO) LOAD REGULATION (VO) -55oC AMBIENT TEMP (TA) = -0.15 100 OUTPUT VOLTAGE (VO) = 5V INPUT VOLTAGE (VI) = 12V SHORT CIRCUIT PROTECTION RESISTANCE (RSCP) = 0 0.1 -0.05 -0.1 40 60 80 OUTPUT CURRENT (mA) FIGURE 3. LOAD REGULATION WITHOUT CURRENT LIMITING OUTPUT VOLTAGE (VO) = 5V INPUT VOLTAGE (VI) = 12V SHORT CIRCUIT PROTECTION RESISTANCE (RSCP) = 10Ω 0 20 +25oC +125oC 0 AMBIENT TEMPERATURE (TA) = -55oC -0.1 0.2 +25oC -0.3 -0.2 +125oC -0.4 -0.25 0 5 10 15 20 25 0 30 OUTPUT CURRENT (mA) FIGURE 4. LOAD REGULATION WITH CURRENT LIMITING 20 40 60 80 100 OUTPUT CURRENT (mA) FIGURE 5. LOAD REGULATION WITH CURRENT LIMITING 7-5 CA723, CA723C Typical Performance Curves (CA723) (Continued) 0.8 0.6 +125oC 0 0 20 40 60 +25oC 0.4 QUIESCENT CURRENT (mA) AMBIENT TEMPERATURE (TA) = -55oC OUTPUT VOLTAGE (V) 1.0 0.2 OUTPUT VOLTAGE (VO) = 5V INPUT VOLTAGE (VI) = 12V SHORT CIRCUIT PROTECTION RESISTANCE (RSCP) = 10Ω 1.2 OUTPUT VOLTAGE (VO) = REFERENCE VOLTAGE (VREF) LOAD CIRCUIT (IL) = 0 5 4 AMBIENT TEMPERATURE (TA) = -55oC 3 +25oC 2 +125oC 1 0 80 0 100 10 20 MAX. JUNCTION TEMP. (TJ) = +150oC THERMAL RESISTANCE = 150oC/W QUIESCENT DISSIPATION (PQ) = 60mW TO-5 STYLE PACKAGE WITH NO HEAT SINK MAX. JUNCTION TEMP. (TJ) = +125oC THERMAL RESISTANCE = 125oC/W QUIESCENT DISSIPATION (PQ) = 60mW DUAL - IN - LINE PLASTIC PACKAGE WITH NO HEAT SINK 150 100 AMBIENT TEMPERATURE (TA) = +25oC 50 100 AMBIENT TEMPERATURE (TA) = +25oC 50 +70oC +70oC 0 0 0 0 10 20 30 40 DIFFERENTIAL INPUT - OUTPUT VOLTAGE (V) 40 30 OUTPUT VOLTAGE (VO) = 5V INPUT VOLTAGE (VI) = 12V SHORT CIRCUIT PROTECTION RESISTANCE (RSCP) = 10Ω LOAD REGULATION (VO) AMBIENT TEMPERATURE (TA) = +25oC 0oC +70oC -0.1 20 FIGURE 9. MAX LOAD CURRENT vs DIFFERENTIAL INPUTOUTPUT VOLTAGE FOR CA723CE OUTPUT VOLTAGE (VO) = 5V INPUT VOLTAGE (VI) = 12V SHORT CIRCUIT PROTECTION RESISTANCE (RSCP) = 0 0 10 DIFFERENTIAL INPUT - OUTPUT VOLTAGE (V) FIGURE 8. MAX LOAD CURRENT vs DIFFERENTIAL INPUTOUTPUT VOLTAGE LOAD REGULATION (VO) 40 FIGURE 7. QUIESCENT CURRENT vs INPUT VOLTAGE MAXIMUM LOAD CURRENT (mA) MAXIMUM LOAD CURRENT (mA) FIGURE 6. CURRENT LIMITING CHARACTERISTICS 150 30 INPUT VOLTAGE (V) OUTPUT CURRENT (mA) AMBIENT TEMPERATURE (TA) = +25oC 0 0oC -0.1 +70oC -0.2 -0.2 0 20 40 60 80 100 OUTPUT CURRENT (mA) 0 FIGURE 10. LOAD REGULATION WITHOUT CURRENT LIMITING 10 20 OUTPUT CURRENT (mA) 30 FIGURE 11. LOAD REGULATION WITH CURRENT LIMITING 7-6 CA723, CA723C AMBIENT TEMPERATURE (TA) = +25oC OUTPUT VOLTAGE (V) 1.0 0.8 0.6 0.4 OUTPUT VOLTAGE (VO) = REFERENCE VOLTAGE (VREF) LOAD CURRENT (IL) = 0 QUIESCENT CURRENT (mA) 1.2 (Continued) OUTPUT VOLTAGE (VO) = 5V INPUT VOLTAGE (VI) = 12V SHORT CIRCUIT PROTECTION RESISTANCE (RSCP) = 10 Typical Performance Curves (CA723) 0.2 5 4 AMBIENT TEMPERATURE (TA) = +25oC 3 0oC 2 +70oC 1 +70oC 0oC 0 0 10 20 40 60 OUTPUT CURRENT (mA) 80 0 100 0 FIGURE 12. CURRENT LIMITING CHARACTERISTICS 10 20 30 INPUT VOLTAGE (V) 40 FIGURE 13. QUIESCENT CURRENT vs INPUT VOLTAGE Typical Performance Curves (CA723 and CA723C) 0.1 0 -0.1 -0.2 -5 5 15 25 35 0 -0.2 -5 5 15 25 35 45 DIFFERENTIAL INPUT - OUTPUT VOLTAGE (V) 45 DIFFERENTIAL INPUT - OUTPUT VOLTAGE (V) FIGURE 14. LOAD REGULATION vs DIFFERENTIAL INPUTOUTPUT VOLTAGE FIGURE 15. LINE REGULATION vs DIFFERENTIAL INPUTOUTPUT VOLTAGE LOAD CURRENT (IL) 10 10 0 5 OUTPUT VOLTAGE (VO) -10 0 CURRENT LIMITING SENSE VOLTAGE (V) INPUT VOLTAGE (V I) = 12V, OUTPUT VOLTAGE (VO) = 5V LOAD CURRENT (IL) = 40mA AMBIENT TEMPERATURE (TA) = +25oC SHORT CIRCUIT PROTECTION RESISTANCE (RSCP) = 0 LOAD DEVIATION (mA) OUTPUT VOLTAGE DEVIATION (mA) 0.1 -0.1 -0.3 15 OUTPUT VOLTAGE (VO) = 5V LOAD CURRENT (IL) = 1mA AMBIENT TEMPERATURE (TA) = +25oC 0.3 DIFFERENTIAL INPUT VOLTAGE (∆VT) = 3V SHORT CIRCUIT PROTECTION RESISTANCE (RSCP) = 0 0.2 -20 5 -30 200 0.8 CURRENT LIMITING SENSE VOLTAGE 160 0.7 120 0.6 SHORT CIRCUIT LIMITING CURRENT WITH RSCP = 5Ω 80 0.5 0.4 WITH RSCP = 10Ω 0.3 10 -5 5 15 25 TIME (µs) 35 40 SHORT CIRCUIT LIMITING CURRENT (mA) LOAD REGULATION (VO) 0.2 LINE REGULATION (VO) INPUT VOLTAGE (VI) = 12V OUTPUT VOLTAGE (VO) = 5V LOAD CURRENT (IL) = I TO 50mA AMBIENT TEMPERATURE (TA) = +25oC SHORT CIRCUIT PROTECTION RESISTANCE (RSCP) = 0 0 -50 0 50 100 150 JUNCTION TEMPERATURE (oC) 45 FIGURE 16. LINE TRANSIENT RESPONSE FIGURE 17. CURRENT LIMITING CHARACTERISTIC vs JUNCTION TEMPERATURE 7-7 CA723, CA723C Typical Performance Curves (CA723 and CA723C) (Continued) INPUT VOLTAGE (VI) 2 4 0 2 OUTPUT VOLTAGE (VO) -2 0 INPUT VOLTAGE (VI) = 12V OUTPUT VOLTAGE (VO) = 5V LOAD CURRENT (IL) = 1mA AMBIENT TEMPERATURE (TA) = +25oC SHORT CIRCUIT PROTECTION RESISTANCE (RSCP) = 0 -2 -4 -5 5 15 25 TIME (µs) 35 -4 OUTPUT IMPEDANCE (W) 4 6 INPUT VOLTAGE DEVIATION (V) OUTPUT VOLTAGE DEVIATION (mA) 10 8 INPUT VOLTAGE (VI) = 12V 6 OUTPUT VOLTAGE (V ) = 5V O 4 LOAD CURRENT (I ) = 50mA L o 2 AMBIENT TEMPERATURE (TA) = +25 C SHORT CIRCUIT PROTECTION RESISTANCE (RSCP) = 0 1 8 6 4 LOAD CAPACITANCE (CL) = 0 2 0.1 1µF 8 6 4 2 0.01 2 -6 4 68 1k 100 45 2 4 68 2 10k 4 68 2 100k 4 6 8 1M FREQUENCY (Hz) FIGURE 18. LOAD TRANSIENT RESPONSE FIGURE 19. OUTPUT IMPEDANCE vs FREQUENCY Typical Application Circuits V+ VI VC VI VREF V+ VC VREF VO VO RSCP CURRENT LIMIT R1 NON INV INPUT CREF R2 RSCP REGULATED OUTPUT R3 CURRENT R3 SENSE INV. INPUT V- NON INV INPUT C1 100pF REGULATED OUTPUT 15V CURRENT SENSE R1 C1 100pF INV. INPUT V- R2 COMP COMP Circuit Performance Data: Regulated Output Voltage 5V Line Regulation (∆VI= 3V) 0.5mV Load Regulation (∆IL = 50mA) 1.5mV Note: R3 = CURRENT LIMIT Circuit Performance Data: Line Regulation (∆VI = 3V) 1.5mV Load Regulation (∆IL = 50mA) 4.5mV R1 R2 For Minimum Temperature Drift R1 + R2 R3 May Be Eliminated For Minimum Component Count Note: R3 = R1 R2 For Minimum Temperature Drift R1 + R2 FIGURE 20. LOW VOLTAGE REGULATOR CIRCUIT (VO = 2V TO 7V) FIGURE 21. HIGH VOLTAGE REGULATOR CIRCUIT (VO = 7V TO 37V) 7-8 CA723, CA723C Typical Application Circuits V+ R2 (Continued) VC VI VI VREF R5 2kΩ VZ VC V+ VREF VO VO R4 3kΩ CURRENT LIMIT CURRENT SENSE R3 3kΩ R1 NON INV. INPUT V- INV. INPUT COMP NON INV INPUT REGULATED OUTPUT-15V C1 100pF Circuit Performance Data: Line Regulation (∆VI = 3V) 1mV Load Regulation (∆IL = 100mA) 2mV Note: For Applications Employing the TO-5 Style Package and Where VZ Is Required, An External; 6.2V Zener Diode Should be Connected in Series with VO (Terminal 6). V- CURRENT R SCP LIMIT REGULATED OUTPUT 15V CURRENT SENSE R1 INV. INPUT COMP C1 100pF R2 Circuit Performance Data: Line Regulation (∆VI = 3V) 1.5mV Load Regulation (∆IL = 1A) 15mV FIGURE 22. NEGATIVE VOLTAGE REGULATOR CIRCUIT FIGURE 23. POSITIVE VOLTAGE REGULATOR CIRCUIT (WITH EXTERNAL n-p-n PASS TRANSISTOR) VI VI R3 60Ω V+ VREF VC VO 2N5956 OR 2N6108 V+ VREF VC REGULATED OUTPUT 5V VO R3 2.7kΩ R1 CURRENT LIMIT CURRENT SENSE R2 NON INV INPUT V- CURRENT LIMIT R1 RSCP INV. INPUT COMP C1 0.001µF RSCP 30Ω R4 5.6kΩ CURRENT SENSE REGULATED OUTPUT 5V R2 NON INV INPUT V- INV. COMP INPUT C1 0.001µF Circuit Performance Data: Line Regulation (∆V = 3V) 0.5mV Load Regulation (∆IL = 10mA) 1mV Short Circuit Current 20mA Circuit Performance Data: Line Regulation (∆VI = 3V) 0.5mV Load Regulation (∆IL = 1A) 5mV FIGURE 24. POSITIVE VOLTRAGE REGULATOR CIRCUIT (WITH EXTERNAL p-n-p PAS TRANSISTOR) FIGURE 25. FOLDBACK CURRENT LIMITING CIRCUIT 7-9 CA723, CA723C Typical Application Circuits (Continued) R5 10kΩ R5 3.9kΩ V+ VC VI = 85V V+ VC VREF VREF VO VZ R4 3kΩ R1 D1 12V SK3062 R3 3kΩ RSCP 1Ω R3 3kΩ D1 12V SK3062 NON INV. INPUT R4 3kΩ R1 VCOMP TI 2N6211 R2 INV. INPUT R2 R6 10kΩ VO VZ TI 2N3442 CURRENT LIMIT CURRENT SENSE NON INV. INPUT VI C1 0.001µF CURRENT LIMIT CURRENT SENSE INV. INPUT C1 0.001µF V- COMP REGULATED OUTPUT-100V REGULATED OUTPUT-50V Circuit Performance Data: Line Regulation (∆V = 20V) 15mV Load Regulation (∆IL = 50mA) 20mV NOTE: For applications employing the TO-5 Style Package and where VZ is required, an external 6.2V zener diode should be connected in series with VO (terminal 6) Circuit Performance Data: Line Regulation (∆VI = 20V) 30mV Load Regulation (∆IL =100mA) 20mV NOTE: For applications employing the TO-5 Style Package and where VZ is required, an external 6.2V zener diode should be connected in series with VO (terminal 6) FIGURE 26. POSITIVE FLOATING REGULATOR CIRCUIT FIGURE 27. NEGATIVE FLOATING REGULATOR CIRCUIT VI VREF VI V+ VC VO RSCP NOTE 2 V+ VREF VC VZ REGULATED OUTPUT 5V CURRENT LIMIT R1 NON INV INPUT R1 R4 100Ω REGULATED OUTPUT 5V CURRENT LIMIT CURRENT SENSE INV. INPUT R3 COMP VC1 0.001µF R3 100Ω C CURRENT SENSE R2 VO 2kΩ TI 2N3053 R2 R4 2.kΩ CCSL LOGIC INPUT Circuit Performance Data: Line Regulation (∆VI = 3V) 0.5mV Load Regulation (∆IL = 50mA) 1.5mV Short Circuit Current 20mA NOTE: 1. A current limiting transistor may be used for shutdown if current limiting is not required. 2. Add a diode if VO > 10V. INV INPUT V- NON INV. COMP INPUT C1 0.005µF Circuit Performance Data: Line Regulation (∆VI = 10V) 0.5mV Load Regulation (∆IL = 100mA) 1.5mV NOTE: For applications employing the TO-5 Style Package and where VZ is required, an external 6.2V zener diode should be connected in series with VO (terminal 6). FIGURE 28. REMOTE SHUTDOWN REGULATOR CIRCUIT WITH CURRENT LIMITING 7-10 FIGURE 29. SHUNT REGULATOR CIRCUIT