µA723/723C Precision voltage regulator
Philips Semiconductors
Product specification
µA723/723C
Precision voltage regulator
DESCRIPTION
PIN CONFIGURATION
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.
D,F, N Packages
NC 1
14 NC
CURRENT LIMIT 2
13 FREQUENCY COMPENS.
CURRENT SENSE 3
12 V+
INVERTING INPUT 4
11 V
C
NON-INVERTING INPUT 5
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
10 V
OUT
VREF 6
9
7
8
V–
VZ
NC
SL00503
Figure 1. Pin Configuration
ORDERING INFORMATION
DESCRIPTION
TEMPERATURE RANGE
ORDER CODE
-55°C to 125°C
µA723F
0581B
14-Pin Plastic Dual In-Line Package (DIP)
0 to 70°C
µA723CN
SOT27-1
14-Pin Plastic Small Outline (SO) Package
0 to 70°C
µA723CD
SOT108-1
14-Pin Ceramic Dual In-Line Package (CERDIP)
DWG #
EQUIVALENT CIRCUIT
FREQUENCY
COMPENSATION
12
V+
13
11
VIN
VC
TEMPERATURE
COMPENSATED
ZENER
VREF
INVERTING
INPUT
4
SERIES PASS
TRANSISTOR
–
ERROR AMP
8
10
+
VOUT
NON INVERTING
INPUT
VOLTAGE
REFERENCE
AMPLIFIER
7
2
CURRENT
LIMIT
V–
3 CURRENT
SENSE
9
VZ
SL00504
Figure 2. Equivalent Circuit
1994 Aug 31
1
853-1063 13721
Philips Semiconductors
Product specification
µA723/723C
Precision voltage regulator
ABSOLUTE MAXIMUM RATINGS
SYMBOL
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 VZ
25
mA
F package
1190
mW
N package
1420
mW
D package
PMAX
PARAMETER
Maximum power dissipation TA=25°C (still-air)1
1040
mW
Operating 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
TA
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
1994 Aug 31
2
Philips Semiconductors
Product specification
µA723/723C
Precision voltage regulator
DC ELECTRICAL CHARACTERISTICS
TA=25°C, unless otherwise specified.1
SYMBOL
VR LINE
VR LOAD
PARAMETER
Line regulation2
Load
regulation2
µA723
TEST CONDITIONS
Min
µA723C
Typ
Max
VIN=12V to VIN=15V
0.01
VIN=12V to VIN=40V
0.02
Min
Typ
Max
0.1
0.01
0.1
0.2
0.1
0.5
0.15
0.03
0.2
IL=1mA to IL=50mA
0.03
f=50Hz to 10kHz, CREF=0
74
74
f=50Hz to 10kHz, CREF=5µF
86
86
RSC=10Ω, VOUT=0
65
65
∆VIN/∆ VO
Ripple Rejection
IOS
Short-circuit current
VREF
Reference voltage
IREF=0.1mA
VREF (LOAD)
Reference voltage
change with load
IREF=0.1mA to 5mA
VNOISE
Output noise voltage
S
Long-term stability
ISCD
Standby current drain
VIN
Input voltage range
9.5
40
VOUT
Output voltage range
2.0
37
VDIFF
Input-output voltage
differential
3.0
38
6.95
7.15
7.35
6.80
7.15
20
BW=100Hz to 10kHz, CREF=0
20
20
BW=100Hz to 10kHz, CREF=5µF
2.5
2.5
0.1
0.1
Tj=Tjmax.
TA=25°C for end point
measurment
IL=0, VIN=30V
2.3
3.5
2.3
UNITS
%VOUT
%VOUT
dB
mA
7.50
V
20
mV
µVRMS
%1000 hrs.
4.0
mA
9.5
40
V
2.0
37
V
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
0.015
%/°C
0.002
0.015
0.003
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.
1994 Aug 31
3
Philips Semiconductors
Product specification
µA723/723C
Precision voltage regulator
TYPICAL PERFORMANCE CHARACTERISTICS
Maximum Load Current
as a Function of
Input-Output Voltage
Differential
Standby Current Drain
as a Function of Input Voltage
200
5.0
TA = 0°C
TA = +25°C
3.0
I LMAX — mA
2.0
120
TA = +25°C
TA = 70°C
TA = +125°C
80
TA = +70°C
1.0
40
TA = +125°C
0
10
20
30
40
50
0
10
20
INPUT VOLTAGE — V
30
LIMIT CURRENT
RSC = 10Ω
120
0.5
80
LIMIT CURRENT
RSC = 5Ω
40
0.3
TA = 0°C
–0.3
0
50
TA = 70°C
TA = +125°C
80
40
–0.05
10
20
30
40
50
0
–8.0
5
15
25
TIME — µs
35
45
100
10
RSC = 0
TA = +25°C
∆VIN = +3V
IIL = 1mA
+0.2
+0.1
0
1.0
VO = +5V
VIN = +12V
RSC = 0
TA = +25°C
IIL = 50mA
C1 = 0
C1 = 1µF
0.1
–0.1
–0.2
–5
5
15
25
35
45
(VIN – VOUT) — V
Figure 3. Typical Performance Characteristics
1994 Aug 31
80
Output Impedance as
a Function of Frequency
OUTPUT IMPEDANCE
—
Ω
REGULATION — % V OUT
LOAD DEVIATION – mA
OUTPUT VOLTAGE DEVIATION — mV
VOUT = 5V
VIN = +12V
IL = 40mA
RSC = 0
60
OUTPUT CURRENT — mA
VOUT = +5V
+10
0
–5
TA = +25°C
T
A = 0°C 40
20
TA = +125°C
TA = +55°C
–0.15
+0.3
–4.0
TA = 70°C
–0.1
Line Regulation as a
Function of Input-Output
Voltage Differential
OUTPUT VOLTAGE
100
VOUT = 5V
VIN = +12V
RSC = 0
(VIN – VOUT) — V
Load Transient Response
80
–0.2
0
0
60
0
0
+150
LOAD CURRENT
40
Load Regulation
Characteristics Without
Current Limiting
TA = +25°C
JUNCTION TEMPERATURE — °C
4.0
20
OUTPUT CURRENT — mA
RTH = 111°C/W
PSTANDBY = 60mW
DIP PACKAGE
(NO HEAT SINK)
120
0
+100
–0.2
+0.05
160
I LMAX — mA
160
+50
TA = +25°C
TA = +70°C
TA = +125°C
–0.1
TJMAX = 150°C
LIMITING CURRENT — mA
0.7
0
40
200
200
SENSE VOLTAGE
–50
TA = –55°C
Maximum Load Current
as a Function of
Input-Output Voltage
Differential
0.8
0.4
0
(VIN – VOUT) — V
Current Limiting
Characteristics as a
Function of Junction
Temperature
0.6
RSC = 10Ω
–0.4
0
0
REGULATION — % V OUT
STANDBY CURRENT
160
TA = –55°C
VOUT = 5V, VIN = +12V
RTH = 150°C/W
PSTANDBY = 60mW
METAL CAN PACKAGE
(NO HEAT SINK)
REGULATION — % V OUT
IL = 0
4.0
+0.1
TJMAX = 150°C
VOUT = VREF
CURRENT LIMIT SENSE VOLTAGE — V
Load Regulation
Characteristics with
Current Limiting
4
.01
100
1k
10k
100k
FREQUENCY — Hz
1M
SL00505
Philips Semiconductors
Product specification
µA723/723C
Precision voltage regulator
TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
Load Regulation as a
Function of Input-Output
Voltage Differential
2.0
0
OUTPUT VOLTAGE
0
–2.0
–6.0
45
–4.0
–5
5
15
25
35
Current Limiting
Characteristics
+0.2
VO = +5V
VIN = +12V
RSC = 0
TA = +25°C
IIL = mA TO IL = 50mA
+0.1
0
1.2
OUTPUT VOLTAGE DEVIATION — V
INPUT VOLTAGE
REGULATION — %VOUT
4.0
INPUT VOLTAGE DEVIATION – VOLTS
OUTPUT VOLTAGE DEVIATION — mV
Line Transient Response
0.1
–0.2
1.0
0.6
0.4
TIME — µs
5
15
25
35
VO = +5V
VIN = +12V
RSC = 10Ω
0.2
0
–0.3
–5
TA = +125°C
TA = +70°C
TA = +25°C
TA = 0°C
TA = –55°C
0.8
0
45
(VIN – VOUT) — V
20
40
60
80
100
OUTPUT CURRENT — mA
SL00506
Figure 4. Typical Performance Characteristics (cont.)
TYPICAL APPLICATIONS
VIN
V+
R2 V+
VC
VOUT
VREF
RSC
CL
R1
CREF
R2
VOUT
R4
CS
N.I.
V– COMP
C1
R3
INV
COMP
R1
C1
100pF
100pF
NOTES:
V
OUT
R3 V REF x
R2
R1 R2
NOTE:
V
OUT
V REF
2
x
REGULATED
OUTPUT
R1 R2
; R3 R4
R1
R1 R2
for minimum temperature drift
R1 R2
Low Voltage Regulator (VOUT = 2 to 7V)
Negative Voltage Regulator
Figure 5. Typical Applications
1994 Aug 31
T1
CL
R3
INV
R5
VZ
REGULATED
OUTPUT
CS
N.I.
VC
VREF
5
SL00507
Philips Semiconductors
Product specification
µA723/723C
Precision voltage regulator
TYPICAL APPLICATIONS (Continued)
VIN
VIN
V+
VC
VREF
RSC
V+
REGULATED
OUTPUT
VOUT
VC
VOUT
VREF
CL
R1
CS
R2
2kΩ
C1
INV
N.I.
R3
V– COMP
R4
Q1
V–
V
OUT
V REF x
R2
R1 R2
R1
COMP
LOGIC INPUT
2kΩ
R2
C1
1nF
NOTE:
REGULATED
OUTPUT
CS
INV
N.I.
RSC
CL
R3
NOTE:
V
OUT
R3 V REF x
100pF
R2
; R3 R4
R1 R2
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)
High Voltage Regulator (VOUT = 7 to 37V)
VIN
VREF
RSC
REGULATED
OUTPUT
VOUT
VZ
OUTPUT VOLTAGE DEVIATION — V
16
VC
R3
CL
R1
CS
INV
N.I.
COMP
V–
R2
R4
C1
1nF
RSC = 3.4Ω
R4 = 3.6kΩ
R3 = 500Ω
14
12
IKNEE
10
8
6
4
2
ISHORT
0
0
10
20
R
V
(R 3 R 4)
OUT 3
SENSE
R
R4
R
R
SC
SC 4
V
KNEE
V
OUT
V REF X
V
I
SHORT CKT
50
60
R1 R2
R4
NOTES:
R4
R3
R3 R4
SENSE
X
R
R4
SC
V
V
I
OUT SC
– 1
(I KNEE – I
)
SENSE
SHORT CKT
V
R
SC
SENSE
I
SC
Foldback Current Limiting Regulator (VOUT = 2 to 7V)
Figure 6. Typical Applications (cont.)
1994 Aug 31
40
OUTPUT CURRENT — mA
NOTES:
I
30
6
1 R3
R4
SL00508
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