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Philips Semiconductors
Product specification
Precision voltage regulator
A723/723C
DESCRIPTION
The A723/A723C 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 reference amplifier, error amplifier, series pass transistor, and current limiter, with access to remote shutdown.
PIN CONFIGURATION
D,F, N Packages
NC 1 CURRENT LIMIT 2 CURRENT SENSE 3 INVERTING INPUT 4 14 NC 13 FREQUENCY COMPENS. 12 V+ 11 V C 10 V OUT 9 8 VZ NC
FEATURES
NON-INVERTING INPUT 5 VREF 6 V- 7
* Positive or negative supply operation * Series, shunt, switching, or floating operation * 0.01% line and load regulation * Output voltage adjustable from 2V to 37V * Output current to 150mA without external pass transistor * A723 MIL-STD-883A, B, C available
ORDERING INFORMATION
DESCRIPTION 14-Pin Ceramic Dual In-Line Package (CERDIP) 14-Pin Plastic Dual In-Line Package (DIP) 14-Pin Plastic Small Outline (SO) Package
SL00503
Figure 1. Pin Configuration
TEMPERATURE RANGE -55C to 125C 0 to 70C 0 to 70C
ORDER CODE A723F A723CN A723CD
DWG # 0581B SOT27-1 SOT108-1
EQUIVALENT CIRCUIT
FREQUENCY COMPENSATION 12 V+ VIN 13 11 VC
TEMPERATURE COMPENSATED ZENER
VREF 8
INVERTING INPUT 4 ERROR AMP
SERIES PASS TRANSISTOR - + 10 VOUT
NON INVERTING INPUT
VOLTAGE REFERENCE AMPLIFIER 7 V- 2 CURRENT LIMIT 3 CURRENT SENSE 9 VZ
SL00504
Figure 2. Equivalent Circuit
1994 Aug 31
1
853-1063 13721
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Philips Semiconductors
Product specification
Precision voltage regulator
A723/723C
ABSOLUTE MAXIMUM RATINGS
SYMBOL Continuous voltage from V+ to VInput-output voltage differential VDIFF VCM IOUT Error amplifier maximum input differential voltage Error amplifier non-inverting input (Pin 5) to -V (Pin 7) Maximum output current Current from VREF Current from VZ PMAX Maximum power dissipation TA=25C (still-air)1 F package N package D package TA Operating ambient temperature range A723 A723C Storage temperature range Lead soldering temperature (10sec max) 1190 1420 1040 -55 to +125 0 to 70 -65 to +150 300 mW mW mW C C C C PARAMETER Pulse voltage from V+ to V- (50ms) RATING 50 40 40 5 8 150 15 25 UNIT V V V V V mA mA mA
TSTG TSOLD
NOTES: 1. The following derating factors should be applied above 25C F package at 9.5mW/C N package at 11.4mW/C D package at 8.3mW/C
1994 Aug 31
2
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Philips Semiconductors
Product specification
Precision voltage regulator
A723/723C
DC ELECTRICAL CHARACTERISTICS
TA=25C, unless otherwise specified.1 SYMBOL VR LINE VR LOAD VIN/ VO IOS VREF VREF (LOAD) VNOISE S ISCD VIN VOUT VDIFF PARAMETER Line regulation2 Load regulation2 TEST CONDITIONS VIN=12V to VIN=15V VIN=12V to VIN=40V IL=1mA to IL=50mA f=50Hz to 10kHz, CREF=0 f=50Hz to 10kHz, CREF=5F RSC=10, VOUT=0 IREF=0.1mA IREF=0.1mA to 5mA BW=100Hz to 10kHz, CREF=0 BW=100Hz to 10kHz, CREF=5F Tj=Tjmax. TA=25C for end point measurment IL=0, VIN=30V 9.5 2.0 3.0 20 2.5 0.1 2.3 3.5 40 37 38 9.5 2.0 3.0 6.95 A723 Min Typ 0.01 0.02 0.03 74 86 65 7.15 7.35 20 20 2.5 0.1 2.3 4.0 40 37 38 6.80 Max 0.1 0.2 0.15 Min A723C Typ 0.01 0.1 0.03 74 86 65 7.15 7.50 20 Max 0.1 0.5 0.2 UNITS %VOUT %VOUT dB mA V mV VRMS %1000 hrs. mA V V V
Ripple Rejection Short-circuit current Reference voltage Reference voltage change with load Output noise voltage Long-term stability Standby current drain Input voltage range Output voltage range Input-output voltage differential Line regulation Load regulation Average temperature coefficient of output voltage
The following specifications apply over the operating temperature ranges.
VR LINE VR LOAD TC VIN=12V to VIN=15V IL=1mA to IL=50mA 0.002 0.3 0.6 0.015 0.003 0.3 0.6 0.015 %VOUT %VOUT %/C
NOTES: 1. VIN=V+=VC=12V, V-=0V, VOUT=5V, IL=1mA, RSC=0, C1=100pF, CREF=0 and divider impedance as seen by error amplifier10k. 2. The load and line regulation specifications are for constant junction temperature. Temperature drift effects must be taken into account separately when the unit is operating under conditions of high dissipation.
1994 Aug 31
3
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Philips Semiconductors
Product specification
Precision voltage regulator
A723/723C
TYPICAL PERFORMANCE CHARACTERISTICS
Standby Current Drain as a Function of Input Voltage
5.0 VOUT = VREF 4.0 STANDBY CURRENT IL = 0 TA = -55C I LMAX -- mA TA = 0C TA = +25C 160 200 TJMAX = 150C REGULATION -- % V OUT RTH = 150C/W PSTANDBY = 60mW METAL CAN PACKAGE (NO HEAT SINK) TA = +25C TA = 70C TA = +125C
Maximum Load Current as a Function of Input-Output Voltage Differential
+0.1
Load Regulation Characteristics with Current Limiting
VOUT = 5V, VIN = +12V 0 RSC = 10 TA = -55C -0.1 TA = +25C TA = +70C TA = +125C TA = 0C -0.3
3.0
120
2.0 TA = +70C 1.0 TA = +125C
80
-0.2
40
0 0 10 20 30 40 50 INPUT VOLTAGE -- V
0 0 10 20 30 40 50 (VIN - VOUT) -- V
-0.4 0 20 40 60 80 100 OUTPUT CURRENT -- mA
Current Limiting Characteristics as a Function of Junction Temperature
CURRENT LIMIT SENSE VOLTAGE -- V 0.8 SENSE VOLTAGE 160 LIMIT CURRENT RSC = 10 LIMITING CURRENT -- mA 0.7 160 I LMAX -- mA 200 200
Maximum Load Current as a Function of Input-Output Voltage Differential
+0.05 TJMAX = 150C REGULATION -- % V OUT RTH = 111C/W PSTANDBY = 60mW DIP PACKAGE (NO HEAT SINK) TA = +25C TA = 70C TA = +125C 0
Load Regulation Characteristics Without Current Limiting
VOUT = 5V VIN = +12V RSC = 0
0.6
120
120
-0.05
0.5 LIMIT CURRENT RSC = 5
80
80
-0.1
TA = 70C TA = +25C TA = 0C 40 20 TA = +125C TA = +55C
0.4
40
40
-0.15
0.3 -50 0 +50 +100 +150 JUNCTION TEMPERATURE -- C
0
0 0 10 20 30 40 50 (VIN - VOUT) -- V
-0.2 0 60 80 100 OUTPUT CURRENT -- mA
Load Transient Response
+0.3 OUTPUT VOLTAGE DEVIATION -- mV LOAD CURRENT +10 REGULATION -- % V OUT +0.2
Line Regulation as a Function of Input-Output Voltage Differential
10 VOUT = +5V OUTPUT IMPEDANCE -- RSC = 0 TA = +25C VIN = +3V IIL = 1mA
Output Impedance as a Function of Frequency
0 4.0 OUTPUT VOLTAGE
LOAD DEVIATION - mA
1.0
+0.1
VO = +5V VIN = +12V RSC = 0 TA = +25C IIL = 50mA
C1 = 0
C1 = 1F 0.1
0 VOUT = 5V VIN = +12V IL = 40mA RSC = 0 -5 5 15 25 35 45
0
-4.0
-0.1
-8.0 TIME -- s
-0.2 -5 5 15 25 35 45 (VIN - VOUT) -- V
.01 100
1k
10k
100k
1M
FREQUENCY -- Hz
SL00505
Figure 3. Typical Performance Characteristics
1994 Aug 31
4
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Philips Semiconductors
Product specification
Precision voltage regulator
A723/723C
TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
Load Regulation as a Function of Input-Output Voltage Differential
INPUT VOLTAGE DEVIATION - VOLTS VO = +5V VIN = +12V RSC = 0 TA = +25C IIL = mA TO IL = 50mA OUTPUT VOLTAGE DEVIATION -- V 4.0 INPUT VOLTAGE 2.0 0 OUTPUT VOLTAGE 0 REGULATION -- %VOUT +0.2 1.2 1.0 0.8 0.6 0.4 0.2 0 0 20 40 60 80 100 OUTPUT CURRENT -- mA TA = +125C TA = +70C TA = +25C TA = 0C TA = -55C VO = +5V VIN = +12V RSC = 10
Line Transient Response
OUTPUT VOLTAGE DEVIATION -- mV
Current Limiting Characteristics
+0.1 0
0.1
-2.0 -6.0 45
-0.2 -0.3 -5 5 15 25 35 45 (VIN - VOUT) -- V
-4.0 -5 5 15 25 35 TIME -- s
SL00506
Figure 4. Typical Performance Characteristics (cont.)
TYPICAL APPLICATIONS
VIN
V+
VC VOUT
R2 V+ VREF RSC CL CS
VC VOUT VZ R5 T1
VREF R1
REGULATED OUTPUT R4
CL CS N.I. INV
N.I. CREF
INV C1
R3
R2
V- COMP
R3
R1
COMP
100pF
C1 100pF
REGULATED OUTPUT
NOTES: V OUT + V REF x R2 R1 ) R2
NOTE: V OUT + V REF 2 x R1 ) R2 ; R3 + R4 R1
R3 +
R1 R2 for minimum temperature drift R1 ) R2
Low Voltage Regulator (VOUT = 2 to 7V) Figure 5. Typical Applications
Negative Voltage Regulator
SL00507
1994 Aug 31
5
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Philips Semiconductors
Product specification
Precision voltage regulator
A723/723C
TYPICAL APPLICATIONS (Continued)
VIN VIN
V+ VREF
VC VOUT
RSC
REGULATED OUTPUT
V+ VREF
VC VOUT RSC
R1
CL CS N.I. INV R3 2k C1 R4 Q1 2k LOGIC INPUT N.I. R3
CL CS INV
REGULATED OUTPUT
R1 R2
V- COMP
R2
V-
COMP
C1
1nF
100pF
NOTE: V OUT + V REF x R2 R1 ) R2
NOTE: V OUT + V REF x R2 ; R3 + R4 R1 ) R2
R3 +
R1 R2 for minimum temperature drift R1 ) R2
R3 may be eliminated for minimum component count
Remote Shutdown Regulator With Current Limiting (VOUT = 2 to 7V)
VIN
High Voltage Regulator (VOUT = 7 to 37V)
16 OUTPUT VOLTAGE DEVIATION -- V VC VREF VOUT VZ R1 CL CS N.I. R2 INV R4 R3 RSC REGULATED OUTPUT 14 12 10 8 6 4 2 0 0 NOTES: V I KNEE + R V (R 3 ) R 4) OUT 3 SENSE ) R R4 R R SC SC 4 R1 ) R2 R4 V V I SHORT CKT + R3 ) R4 SENSE X R R4 SC R SC + SENSE I SC 1) R3 R4 10 20 ISHORT 30 40 50 60 RSC = 3.4 R4 = 3.6k R3 = 500 IKNEE
V-
COMP
C1
1nF
OUTPUT CURRENT -- mA
NOTES: R4 R3 + V I OUT SC -1 (I KNEE - I ) SENSE SHORT CKT
V
V
OUT
+
V REF X
Foldback Current Limiting Regulator (VOUT = 2 to 7V) Figure 6. Typical Applications (cont.)
SL00508
1994 Aug 31
6

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