CA723, CA723C. Voltage Regulators Adjustable from 2V to 37V at Output Currents Up to 150mA Without External Pass Transistors. Description.

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1 SEMICONDUCTOR CA73, CA73C April 199 Voltage Regulators Adjustable from V to 37V at Output Currents Up to 1mA Without External Pass Transistors Features Up to 1mA Output Current Positive and Negative Voltage Regulation Regulation in Excess of 1A with Suitable Pass Transistors Input and Output Short-Circuit Protection Load and Line Regulation % Direct Replacement for 73 and 73C Industry Types Adjustable Output Voltage V to 37V Applications Series and Shunt Voltage Regulator Floating Regulator Switching Voltage Regulator High-Current Voltage Regulator Temperature Controller Ordering Information PART TEMPERATURE PACKAGE CA73E - o C to +1 o C 1Lead Plastic DIP CA73T - o C to +1 o C 1 Pin Metal Can CA73CE o C to +7 o C 1 Lead Plastic DIP CA73CT o C to +7 o C 1 Pin Metal Can Description The CA73 and CA73C are silicon monolithic integrated circuits designed for service as voltage regulators at output voltages ranging from V to 37V at currents up to 1mA. 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. The CA73 and CA73C 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 1mA and in excess of 1A with the use of suitable n-p-n or p-n-p external pass transistors. The CA73 and CA73C are supplied in the 1 lead TO-1 metal can(t suffix), and the 1 lead dual-in-line plastic package (E suffix), and are direct replacements for industry types LM73, LM73C in packages with similar terminal arrangements. Pinouts CA73 (PDIP) TOP VIEW Functional Block Diagram NC ERROR AMP + VOLT REF 1 CA73C (CAN) TOP VIEW TAB 1 FREQ ERROR AMP - VOLT REF 13 FREQ 1 UNREG 11 V C NC NC 8 UNREG 7 V C, (CASE INTERNALLY CONNECTED TO TERM ) TEMPERATURE- ENSATED ZENER CAUTION: These devices are sensitive to electrostatic discharge. Users should follow proper I.C. Handling Procedures. Copyright Harris Corporation UN ERTING - VOLT ERROR REF AMP AMP + -ERTING FREQUENCY ENSATION ER SERIES PASS TRANSISTOR V C OUTPUT File Number 788.3

2 Absolute Maximum Ratings DC Supply Voltage V (Between and Terminals) Pulse Voltage for ms Pulse Width (Between and Terminals) V Differential Input-Output Voltage V Differential Input Voltage Between Inverting and Noninverting Inputs ±V Between Noninverting Input and V Current From Zener Diode Terminal ( ) ma Specifications CA73, CA73C Operating Conditions Thermal Resistance θ JA θ JC Plastic DIP Package o C/W - Metal Can o C/W o C/W Device Dissipation CA73T, CA73CT, Up to T A = + o C mW CA73E, CA73CE, Up to T A = + o C mW CA73T, CA73CT, Above T A = + o C mW/ o C CA73E, CA73CE, Above T A = + o C mW/ o C Ambient Temperature Range Operating Temperature Range o C to +1 o C Storage Temperature Range o C to +1 o C Lead Temperature, During Soldering o C At a distance 1/1 ± 1/3 (1.9mm ±.79mm) from case for 1s 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 T A = + o C, = V C = = 1V, =, = V, I L = 1mA, C 1 = 1pF, C REF =, =, Unless Otherwise Specified. Divider impedance R 1 R R 1 + R at noninverting input, Terminal = 1kΩ. (Figure ) CA73 CA73C PARAMETERS TEST CONDITION MIN TYP MAX MIN TYP MAX UNITS DC CHARACTERISTICS Quiescent Regulator Current, I Q I L =, = 3V ma Input Voltage Range, V Output Voltage Range, V Differential Input-Output Voltage, V Reference Voltage, V Line Regulation (Note 1) = 1V to V % = 1V to 1V % = 1V to 1V, T A = - o C to +1 o C = 1V to 1V, T A = o C to +7 o C % % Load Regulation (Note 1) I L = 1mA to ma % I L = 1mA to ma, T A = - o C to +1 o C I L = 1mA to ma, T A = o C to +7 o C % % Output-Voltage Temperature Coefficient, T A = - o C to +1 o C %/ o C T A = o C to +7 o C %/ o C Ripple Rejection (Note ) f = Hz to 1kHz db f = Hz to 1kHz, C REF = µf db Short Circuit Limiting Current, I LIM = 1Ω, = ma Equivalent Noise RMS Output Voltage, V N (Note ) BW = 1Hz to 1kHz, C REF = BW = 1Hz to 1kHz, C REF = µf µv µv 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.. For C REF (See Figure ) 7-

3 CA73, CA73C UN D1.V Ω D3 R 1kΩ Q1 Q kω Q3 Q pf R7 Q R 1Ω D.V R8 kω R 1kΩ Q1 R9 3Ω Q7 kω FIGURE 1. EQUIVALENT SCHEMATIC DIAGRAM OF THE CA73 AND CA73C Q9 -ERTING R 1kΩ Q11 Q1 Q13 1 1Ω Q8 Q1 ERTING 1kΩ Q1 D V C Q1 FREQUENCY ENSATION Typical Performance Curves (CA73) MAXIMUM LOAD (ma) 1 1 MAX JUNCTION TEMP (T J ) = +1 o C THERMAL RESISTANCE = 1 o C/W QUIESCENT DISSIPATION (PQ) = mw (NO HEAT SINK) +1 o C 1 3 DIFFERENTIAL - OUTPUT VOLTAGE (V) FIGURE. MAX LOAD vs DIFFERENTIAL - OUTPUT VOLTAGE LOAD REGULATION ( ) VOLTAGE ( ) = 1V RESISTANCE ( ) = AMBIENT TEMPERATURE (T A ) = + o C - o C +1 o C 8 1 OUTPUT (ma) FIGURE 3. LOAD REGULATION WITHOUT - ING. VOLTAGE ( ) = 1V RESISTANCE ( ) = 1Ω.1 VOLTAGE ( ) = 1V RESISTANCE ( ) = LOAD REGULATION ( ) o C AMBIENT TEMP (T A ) = + o C +1 o C LOAD REGULATION ( ) AMBIENT TEMPERATURE (T A ) = - o C +1 o C + o C OUTPUT (ma) FIGURE. LOAD REGULATION WITH ING OUTPUT (ma) FIGURE. LOAD REGULATION WITH ING 7-

4 CA73, CA73C Typical Performance Curves (CA73) (Continued) 1. OUTPUT VOLTAGE (V) o C FIGURE. ING CHARACTERISTICS + o C AMBIENT TEMPERATURE (T A ) = - o C 8 1 OUTPUT (ma) VOLTAGE ( ) = 1V RESISTANCE ( ) = 1Ω QUIESCENT (ma) OUTPUT VOLTAGE ( ) = REFERENCE VOLTAGE ( ) LOAD CIRCUIT (I L )= AMBIENT TEMPERATURE (T 3 A ) = - o C + o C +1 o C VOLTAGE (V) FIGURE 7. QUIESCENT vs VOLTAGE MAXIMUM LOAD (ma) 1 1 MAX. JUNCTION TEMP. (T J ) = +1 o C THERMAL RESISTANCE = 1 o C/W QUIESCENT DISSIPATION (P Q ) = mw TO- STYLE PACKAGE WITH NO HEAT SINK +7 o C 1 3 DIFFERENTIAL - OUTPUT VOLTAGE (V) FIGURE 8. MAX LOAD vs DIFFERENTIAL - OUTPUT VOLTAGE MAXIMUM LOAD (ma) 1 1 MAX. JUNCTION TEMP. (T J ) = +1 o C THERMAL RESISTANCE = 1 o C/W QUIESCENT DISSIPATION (P Q ) = mw DUAL - IN - LINE PLASTIC PACKAGE WITH NO HEAT SINK +7 o C 1 3 DIFFERENTIAL - OUTPUT VOLTAGE (V) FIGURE 9. MAX LOAD vs DIFFERENTIAL - OUTPUT VOLTAGE FOR CA73CE VOLTAGE ( ) = 1V RESISTANCE ( ) = VOLTAGE ( ) = 1V RESISTANCE ( ) = 1Ω LOAD REGULATION ( ) -.1 o C +7 o C LOAD REGULATION ( ) -.1 o C +7 o C OUTPUT (ma) FIGURE 1. LOAD REGULATION WITHOUT - ING OUTPUT (ma) FIGURE 11. LOAD REGULATION WITH ING 7-

5 CA73, CA73C Typical Performance Curves (CA73) (Continued) OUTPUT VOLTAGE (V) VOLTAGE ( ) = 1V +7 o C o C OUTPUT (ma) RESISTANCE ( ) = 1 FIGURE 1. ING CHARACTERISTICS QUIESCENT (ma) 3 1 OUTPUT VOLTAGE ( ) = REFERENCE VOLTAGE ( ) LOAD (IL) = o C +7 o C 1 3 VOLTAGE (V) FIGURE 13. QUIESCENT vs VOLTAGE Typical Performance Curves (CA73 and CA73C) LOAD REGULATION ( ) VOLTAGE ( ) = 1V LOAD (I L ) = I TO ma RESISTANCE ( ) = LINE REGULATION ( ).3..1 LOAD (I L ) = 1mA DIFFERENTIAL VOLTAGE ( VT) = 3V RESISTANCE () = DIFFERENTIAL - OUTPUT VOLTAGE (V) FIGURE 1. LOAD REGULATION vs DIFFERENTIAL - OUTPUT VOLTAGE DIFFERENTIAL - OUTPUT VOLTAGE (V) FIGURE 1. LINE REGULATION vs DIFFERENTIAL - OUTPUT VOLTAGE OUTPUT VOLTAGE DEVIATION (ma) VOLTAGE ( ) = 1V, LOAD (I L ) = ma RESISTANCE () = LOAD (I L ) OUTPUT VOLTAGE ( ) TIME (µs) LOAD DEVIATION (ma) ING VOLTAGE (V) ING VOLTAGE SHORT CIRCUIT ING WITH = Ω WITH = 1Ω JUNCTION TEMPERATURE ( o C) SHORT CIRCUIT ING (ma) FIGURE 1. LINE TRANSIENT RESPONSE FIGURE 17. ING CHARACTERISTIC vs JUNC- TION TEMPERATURE 7-7

6 CA73, CA73C Typical Performance Curves (CA73 and CA73C) (Continued) OUTPUT VOLTAGE DEVIATION (ma) VOLTAGE ( ) OUTPUT VOLTAGE ( ) VOLTAGE ( ) = 1V - LOAD (I L ) = 1mA RESISTANCE - ( ) = TIME (µs) VOLTAGE DEVIATION (V) OUTPUT IMPEDANCE (W) VOLTAGE ( ) = 1V LOAD (I L ) = ma RESISTANCE ( ) = LOAD CAPACITANCE (C L ) = FREQUENCY (Hz) 1µF k 1k 1k 1M FIGURE 18. LOAD TRANSIENT RESPONSE FIGURE 19. OUTPUT IMPEDANCE vs FREQUENCY Typical Application Circuits VO VO R 1 C REF R 1pF OUTPUT R 3 1pF OUTPUT 1V R 1 R Regulated Output Voltage V Line Regulation ( = 3V).mV Load Regulation ( I L = ma) 1.mV Note: = R For Minimum Temperature Drift + R FIGURE. LOW VOLTAGE REGULATOR CIRCUIT ( = V TO 7V) Line Regulation ( = 3V) 1.mV Load Regulation ( I L = ma).mv Note: = R For Minimum Temperature Drift + R May Be Eliminated For Minimum Component Count FIGURE 1. HIGH VOLTAGE REGULATOR CIRCUIT ( = 7V TO 37V) 7-8

7 CA73, CA73C Typical Application Circuits (Continued) R R kω V C R 1pF OUTPUT-1V 1pF OUTPUT 1V R Line Regulation ( = 3V) 1mV Load Regulation ( I L = 1mA) mv Note: For Applications Employing the TO- Style Package and Where Is Required, An External;.ener Diode Should be Connected in Series with (Terminal ). FIGURE. NEGATIVE VOLTAGE REGULATOR CIRCUIT Line Regulation ( = 3V) 1.mV Load Regulation ( I L = 1A) 1mV FIGURE 3. POSITIVE VOLTAGE REGULATOR CIRCUIT (WITH EXTERNAL n-p-n PASS TRANSISTOR) Ω V C N9 OR N18 OUTPUT V R.1µF OUTPUT V R.7kΩ.1µF 3Ω R.kΩ FIGURE Line Regulation ( = 3V).mV Load Regulation ( I L = 1A) mv. POSITIVE VOLTRAGE REGULATOR CIRCUIT (WITH EXTERNAL p-n-p PAS TRANSISTOR) Line Regulation ( V = 3V).mV Load Regulation ( I L = 1mA) 1mV Short Circuit Current ma FIGURE. FOLDBACK ING CIRCUIT 7-9

8 CA73, CA73C Typical Application Circuits (Continued) R 3.9kΩ = 8V R 1kΩ R 1kΩ R D1 1V SK3 R.1µF TI N3 1Ω R D1 1V SK3 R.1µF TI N11 Line Regulation ( V = V) 1mV Load Regulation ( I L = ma) mv OUTPUT-V NOTE: For applications employing the TO- Style Package and where is required, an external.v zener diode should be connected in series with (terminal ) FIGURE. POSITIVE FLOATING REGULATOR CIRCUIT OUTPUT-1V Line Regulation ( = V) 3mV Load Regulation ( I L =1mA) mv NOTE: For applications employing the TO- Style Package and where is required, an external.v zener diode should be connected in series with (terminal ) FIGURE 7. NEGATIVE FLOATING REGULATOR CIRCUIT R.1µF kω TI N33 NOTE OUTPUT V Line Regulation ( = 3V).mV Load Regulation ( I L = ma) 1.mV Short Circuit Current ma NOTE: 1. A current limiting transistor may be used for shutdown if current limiting is not required.. Add a diode if > 1V. FIGURE 8. REMOTE SHUTDOWN REGULATOR CIRCUIT WITH ING R.kΩ CCSL LOGIC R C.µF 1Ω R 1Ω OUTPUT V Line Regulation ( = 1V).mV Load Regulation ( I L = 1mA) 1.mV NOTE: For applications employing the TO- Style Package and where is required, an external.v zener diode should be connected in series with (terminal ). FIGURE 9. SHUNT REGULATOR CIRCUIT 7-1

PIN CONFIGURATION FEATURES ORDERING INFORMATION EQUIVALENT CIRCUIT. D,F, N Packages

PIN CONFIGURATION FEATURES ORDERING INFORMATION EQUIVALENT CIRCUIT. D,F, N Packages DESCRIPTION The µa723/µa723c is a monolithic precision voltage regulator capable of operation in positive or negative supplies as a series, shunt, switching, or floating regulator. The 723 contains a temperature-compensated