Philips Semiconductors Product specification
µA723/723CPrecision voltage regulator
1
1994 Aug 31 853-1063 13721
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 reference amplifier , error amplifier, series
pass transistor, and current limiter, with access to remote shutdown.
FEATURES
•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
•µA723 MIL-STD-883A, B, C available
PIN CONFIGURATION
D,F, N Packages
1
2
3
4
5
6
7 8
14
13
12
11
10
9
NC
CURRENT LIMIT
CURRENT SENSE
INVERTING INPUT
NON-INVERTING INPUT
V–
VREF
NC
FREQUENCY COMPENS.
NC
V+
VC
VOUT
VZ
SL00503
Figure 1. Pin Configuration
ORDERING INFORMATION
DESCRIPTION TEMPERATURE RANGE ORDER CODE DWG #
14-Pin Ceramic Dual In-Line Package (CERDIP) -55°C to 125°CµA723F 0581B
14-Pin Plastic Dual In-Line Package (DIP) 0 to 70°CµA723CN SOT27-1
14-Pin Plastic Small Outline (SO) Package 0 to 70°CµA723CD SOT108-1
EQUIVALENT CIRCUIT
TEMPERATURE
COMPENSATED
ZENER
7V–
VOLTAGE
REFERENCE
AMPLIFIER
INVERTING
INPUT
4
ERROR AMP
NON INVERTING
INPUT
–
+
CURRENT
LIMIT
23CURRENT
SENSE
FREQUENCY
COMPENSATION
V+
12 13 11
SERIES PASS
TRANSISTOR
10
9
VC
VZ
VOUT
8
VREF
VIN
SL00504
Figure 2. Equivalent Circuit
Philips Semiconductors Product specification
µA723/723CPrecision voltage regulator
1994 Aug 31 2
ABSOLUTE MAXIMUM RATINGS
SYMBOL PARAMETER RATING UNIT
Pulse voltage from V+ to V- (50ms) 50 V
Continuous voltage from V+ to V- 40 V
Input-output voltage differential 40 V
VDIFF Error amplifier maximum input differential voltage ±5 V
VCM Error amplifier non-inverting input (Pin 5) to -V (Pin 7) 8 V
IOUT Maximum output current 150 mA
Current from VREF 15 mA
Current from VZ25 mA
PMAX Maximum power dissipation TA=25°C (still-air)1
F package 1190 mW
N package 1420 mW
D package 1040 mW
TAOperating ambient temperature range
µA723
µA723C -55 to +125
0 to 70 °C
°C
TSTG Storage temperature range -65 to +150 °C
TSOLD Lead soldering temperature (10sec max) 300 °C
NOTES:
1. The following derating factors should be applied above 25°C
F package at 9.5mW/°C
N package at 11.4mW/°C
D package at 8.3mW/°C
Philips Semiconductors Product specification
µA723/723CPrecision voltage regulator
1994 Aug 31 3
DC ELECTRICAL CHARACTERISTICS
TA=25°C, unless otherwise specified.1
SYMBOL
PARAMETER
TEST CONDITIONS
µA723 µA723C
UNITS
SYMBOL
PARAMETER
TEST CONDITIONS
Min Typ Max Min Typ Max
UNITS
VR LINE
Line regulation2
VIN=12V to VIN=15V 0.01 0.1 0.01 0.1
%VOUT
VR LINE
Line regulation2
VIN=12V to VIN=40V 0.02 0.2 0.1 0.5
%VOUT
VR LOAD Load regulation2IL=1mA to IL=50mA 0.03 0.15 0.03 0.2 %VOUT
∆VIN/∆ VO
Ripple Rejection
f=50Hz to 10kHz, CREF=0 74 74
dB
∆VIN/∆ VO
Ripple Rejection
f=50Hz to 10kHz, CREF=5µF 86 86
dB
IOS Short-circuit current RSC=10Ω, VOUT=0 65 65 mA
VREF Reference voltage IREF=0.1mA 6.95 7.15 7.35 6.80 7.15 7.50 V
VREF (LOAD) Reference voltage
change with load IREF=0.1mA to 5mA 20 20 mV
VNOISE
Output noise voltage
BW=100Hz to 10kHz, CREF=0 20 20
µVRMS
VNOISE
Output noise voltage
BW=100Hz to 10kHz, CREF=5µF 2.5 2.5
µVRMS
S Long-term stability Tj=Tjmax. TA=25°C for end point
measurment 0.1 0.1 %1000 hrs.
ISCD Standby current drain IL=0, VIN=30V 2.3 3.5 2.3 4.0 mA
VIN Input voltage range 9.5 40 9.5 40 V
VOUT Output voltage range 2.0 37 2.0 37 V
VDIFF Input-output voltage
differential 3.0 38 3.0 38 V
The following specifications apply over the operating temperature ranges.
VR LINE Line regulation VIN=12V to VIN=15V 0.3 0.3 %VOUT
VR LOAD Load regulation IL=1mA to IL=50mA 0.6 0.6 %VOUT
TC Average temperature
coefficient of output
voltage 0.002 0.015 0.003 0.015 %/°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 amplifier≤10kΩ.
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.
Philips Semiconductors Product specification
µA723/723CPrecision voltage regulator
1994 Aug 31 4
TYPICAL PERFORMANCE CHARACTERISTICS
Standby Current Drain
as a Function of Input Voltage
Maximum Load Current
as a Function of
Input-Output Voltage
Differential
Load Regulation
Characteristics with
Current Limiting
Current Limiting
Characteristics as a
Function of Junction
Temperature
Maximum Load Current
as a Function of
Input-Output Voltage
Differential
Load Regulation
Characteristics Without
Current Limiting
Load Transient Response Line Regulation as a
Function of Input-Output
Voltage Differential
Output Impedance as
a Function of Frequency
5.0
4.0
3.0
2.0
1.0
00 10 20 30 40 50
INPUT VOLTAGE — V
STANDBY CURRENT
TA = +70°C
TA = +125°C
VOUT = VREF
IL = 0
TA = –55°C
TA = 0°C
TA = +25°C
0.8
0.7
0.6
0.5
0.4
0.3 –50 0 +50 +100 +150
200
160
120
80
40
0
CURRENT LIMIT SENSE VOLTAGE — V
JUNCTION TEMPERATURE — °C
SENSE VOLTAGE
LIMIT CURRENT
RSC = 10Ω
LIMIT CURRENT
RSC = 5Ω
200
TA = +25°C
TA = 70°C
TA = +125°C
160
120
80
40
0
TJMAX = 150°C
RTH = 150°C/W
PSTANDBY = 60mW
METAL CAN PACKAGE
(NO HEAT SINK)
0 10 20 30 40 50
(VIN – VOUT) — V
I — mA
LMAX
200
160
120
80
40
00 10 20 30 40 50
I — mA
LMAX
TA = +25°C
TA = 70°C
TA = +125°C
TJMAX = 150°C
RTH = 111°C/W
PSTANDBY = 60mW
DIP PACKAGE
(NO HEAT SINK)
(VIN – VOUT) — V
LIMITING CURRENT — mA
TA = –55°C
TA = +25°C
TA = +70°C
VOUT = 5V, VIN = +12V
RSC = 10Ω
TA = +125°C
TA = 0°C
+0.1
0
–0.1
–0.2
–0.3
–0.4 20 40 60 80 1000 OUTPUT CURRENT — mA
REGULATION — % VOUT
+0.05
0
–0.05
–0.1
–0.15
–0.2 0
20 40
60 80 100
OUTPUT CURRENT — mA
TA = 70°C
TA = +25°C
TA = 0°C
TA = +125°C
TA = +55°C
VOUT = 5V
RSC = 0
VIN = +12V
REGULATION — % VOUT
+0.3
+0.2
+0.1
0
–0.1
–0.2–5 5 15 25 35 45
OUTPUT IMPEDANCE —
VOUT = +5V
RSC = 0
TA = +25°C
∆VIN = +3V
IIL = 1mA
REGULATION — % VOUT
(VIN – VOUT) — V
VOUT = 5V
IL = 40mA
VIN = +12V
4.0
RSC = 0
0
–4.0
–8.0 –5 5 15 25 35 45
OUTPUT VOLTAGE
OUTPUT VOLTAGE DEVIATION — mV
LOAD CURRENT +10
0
TIME — µs
10
1.0
0.1
.01
100 1k 10k 100k 1M
FREQUENCY — Hz
Ω
VO = +5V
RSC = 0
TA = +25°C
VIN = +12V
IIL = 50mA
C1 = 0
C1 = 1µF
LOAD DEVIATION – mA
SL00505
Figure 3. Typical Performance Characteristics
Philips Semiconductors Product specification
µA723/723CPrecision voltage regulator
1994 Aug 31 5
TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
(VIN – VOUT) — V
Line Transient Response Load Regulation as a
Function of Input-Output
Voltage Differential
Current Limiting
Characteristics
4.0
2.0
0
OUTPUT VOLTAGE DEVIATION — mV
INPUT VOLTAGE
OUTPUT VOLTAGE
0
–2.0
–4.0–5 5 15 25 35 45
–6.0
TIME — µs
+0.2
+0.1
0
0.1
–0.2
–0.3
REGULATION — %VOUT
–5 5 2515 35 45
VO = +5V
RSC = 0
TA = +25°C
VIN = +12V
IIL = mA TO IL = 50mA
1.2
0OUTPUT CURRENT — mA
OUTPUT VOLTAGE DEVIATION — V
1.0
0.8
0.6
0.4
0.2
020 40 60 80 100
TA = 0°C
TA = –55°C
TA = +25°C
TA = +70°C
TA = +125°C
VO = +5V
RSC = 10Ω
VIN = +12V
INPUT VOLTAGE DEVIATION – VOLTS
SL00506
Figure 4. Typical Performance Characteristics (cont.)
TYPICAL APPLICATIONS
NOTES:
VOUT VREF xR2
R1R2
R3
R1R2
R1R2for minimum temperature drift
VOUT VREF
2xR1R2
R1; R3R4
NOTE:
Low Voltage Regulator (VOUT = 2 to 7V) Negative Voltage Regulator
CREF R2
R1
COMP
V–
100pF
C1
R3
RSC
VC
V+
VIN
REGULATED
OUTPUT
VREF
VOUT
CL
CS
INV
N.I.
VREF VOUT
CL
CS
INV
N.I.
VZ
R4
R3COMP
100pF
C1
REGULATED
OUTPUT
R1
R2V+ VCR5
T1
SL00507
Figure 5. Typical Applications
Philips Semiconductors Product specification
µA723/723CPrecision voltage regulator
1994 Aug 31 6
TYPICAL APPLICATIONS (Continued)
IKNEE VOUT R3
RSC R4
VSENSE (R3R4)
RSC R4
VOUT VREF XR1R2
R4
ISHORT CKT VSENSE
RSC XR3R4
R4
R4
R3
VOUT ISC
VSENSE (IKNEE – ISHORT CKT)– 1
RSC
VSENSE
ISC 1
R3
R4
NOTES:
NOTES:
NOTE:
VOUT VREF xR2
R1R2VOUT VREF xR2
R1R2; R3R4
R3
R1R2
R1R2for minimum temperature drift
NOTE:
R3 may be eliminated for minimum component count
Remote Shutdown Regulator With Current
Limiting (VOUT = 2 to 7V) High Voltage Regulator (VOUT = 7 to 37V)
Foldback Current Limiting Regulator (VOUT = 2 to 7V)
R2R4
COMP
V–
1nF
C1
R1
RSC
VC
V+
VIN
VREF VOUT
CL
CS
INV
N.I.
Q1
R3
2kΩ2kΩLOGIC INPUT
REGULATED
OUTPUT VREF VOUT
CL
CS
INV
N.I.
V–
V+
VIN
VC
R3
COMP
REGULATED
OUTPUT
R2
R1
100pF
C1
RSC
R2COMP
V–
R1
VC
VIN
VREF VOUT
CL
CS
INV
N.I.
RSC REGULATED
OUTPUT
1nF
C1
R4
R3
VZ
16
0OUTPUT CURRENT — mA
OUTPUT VOLTAGE DEVIATION — V
R3 = 500Ω
RSC = 3.4Ω
R4 = 3.6kΩ
14
12
10
8
6
4
2
0ISHORT
10 20 30 40 50 60
IKNEE
SL00508
Figure 6. Typical Applications (cont.)
