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KA723
Precision Voltage Regulator Features
Description
• • • •
The KA723 are monolithic integrated circuit voltage regulators featuring high ripple rejection, excellent output and load regulation, excellent temperature stability, and low standby current. The KA723 are also useful in a wide range of other applications such as a shunt regulator, a current regulator or a temperature controller.
Positive or Negative Supply Operation 0.01% Line and Load Regulation Output Voltage Adjustable from 2V to 37V Output Current to 150mA Without External Pass Transistor
14-DIP
1
14-SOP
1
Internal Block Diagram +VCC
12
4
FREQUENCY COMPENS
INVERT INPUT
VC
11
13
SERIES PASS TRANSISTOR
TEMP COMPENS ZENER
_ ERROR AMP +
REF AMP
10 VO
6
7
VREF -VCC
5
2
3
NON INVERT CURRENT CURRENT INPUT LIMIT SENSE
9 VZ
Rev. 1.0.1 ©2002 Fairchild Semiconductor Corporation
KA723
Absolute Maximum Ratings Parameter
Symbol
Value
Unit
VI(P)
50
VPEAK
VI
40
V
V I - VO
40
V
Maximum Output Current
IO
150
mA
Differential Input Voltage
VID
±5
V
Voltage Between Non-Inverting Input and V-
VIE
8
V
IZ
25
mA
IREF
15
mA
PD
1000
mV
Operating Temperature Range
TOPR
0 ~ +70
°C
Storage Temperature Range
TSTG
-65 ~ +150
°C
Pulse Voltage From V+ to V- (50ms) Continuous Voltage from V+ to VInput-Output Voltage Differential
Current From VZ Current From VREF Power Dissipation
Electrical Characteristics (Unless otherwise specified, TA = 25°C, VIN =V+= VC = 12V, V-=O,VOUT = 5V, IL =1mA, RSC = 0, CI = 100pF, CREF=0 and divider impedance as seen by error amplifier ≤10KΩ connected as shown in figure 1) Parameter Line Regulation
Load Regulation
Ripple Rejection Average Temperature Coefficient of Output Voltage Short Circuit Current Limit Reference Voltage
Symbol ∆VO
∆VO dB ∆VO/∆T ISC
Min.
Typ.
Max.
VI = 12V to 15V VI = 12V to 40V
Conditions
-
0.01 0.1
0.1 0.5
TMIN ≤TA≤TMAX VI = 12V to 15V
-
-
0.3
IO = 1mA to 50mA
-
0.03
0.2
TMIN ≤T≤TMAX IO = 1 to 50mA
-
-
0.6
f = 100kHz to 10kHz,CREF =0
-
74
-
f = 100kHz to 10kHz,CREF =5µF
-
86
-
TMIN ≤ T ≤ TMAX
-
RSC = 10Ω, VO = 0
-
65
-
mA
-
6.80
7.15
7.50
V
f = 100kHz to 10kHz, CREF = 0
-
20
-
f = 100kHz to 10kHz, CREF=5µF
-
2.5
-
-
-
0.1
-
%/ 1000HR
-
2.0
4.0
mA
VREF
%
%
dB %/°C
µVms
Output Noise Voltage
VN
Long-term Stability
ST
Standby Current Drain
ID
Input Voltage Range
VI
-
9.5
-
40
V
Output Voltage Range
VO
-
2.0
-
37
V
Input-Output Voltage Differential
VD
-
3.0
-
38
V
IL = 0, VI = 30V
Notes: 1.Line and load regulation specifications are given for the condition of constant chip temperature. 2.Temperature drifts must be taken into account separately for hit dissipation conditions.
2
0.003 0.015
Unit
KA723
Typical Application
Figure 1. Basic Low Voltage Regulator (VOUT = 2 to 7Volts) R1R2 Note: R3 = --------------------R1 + R2
for minimum temperature drift
Typical Performance Regulated Output Voltage 5V Line regulation ( ∆VIN = 3V ) 0.5mV Load Regulation ( ∆VL = 50V ) 1.5mV
3
KA723
Mechanical Dimensions Package Dimensions in millimeters
2.08 ) 0.082
14-DIP
7.62 0.300
3.25 ±0.20 0.128 ±0.008
5.08 MAX 0.200
+0.10
0.25 –0.05 0~15°
4
+0.004
0.010 –0.002
1.50 ±0.10 0.059 ±0.004
#8
2.54 0.100
#7
19.40 ±0.20 0.764 ±0.008
#14
19.80 MAX 0.780
#1
0.46 ±0.10 0.018 ±0.004
(
6.40 ±0.20 0.252 ±0.008
0.20 MIN 0.008
3.30 ±0.30 0.130 ±0.012
KA723
Mechanical Dimensions (Continued) Package Dimensions in millimeters
14-SOP MIN
#8
0.60 ±0.20 0.024 ±0.008
MAX0.10 MAX0.004
1.80 MAX 0.071
5.72 0.225
8°
3.95 ±0.20 0.156 ±0.008
0~
+0.10 0.20 -0.05 +0.004 0.008 -0.002
6.00 ±0.30 0.236 ±0.012
1.27 0.050
#7
+0.10 0.406 -0.05 +0.004 0.016 -0.002
#14
8.70 MAX 0.343
#1
8.56 ±0.20 0.337 ±0.008
(
0.47 ) 0.019
1.55 ±0.10 0.061 ±0.004
0.05 0.002
5
KA723
Ordering Information Product Number
Package
KA723
14-DIP
KA723D
14-SOP
Operating Temperature 0 ~ +70°C
DISCLAIMER FAIRCHILD SEMICONDUCTOR RESERVES THE RIGHT TO MAKE CHANGES WITHOUT FURTHER NOTICE TO ANY PRODUCTS HEREIN TO IMPROVE RELIABILITY, FUNCTION OR DESIGN. FAIRCHILD DOES NOT ASSUME ANY LIABILITY ARISING OUT OF THE APPLICATION OR USE OF ANY PRODUCT OR CIRCUIT DESCRIBED HEREIN; NEITHER DOES IT CONVEY ANY LICENSE UNDER ITS PATENT RIGHTS, NOR THE RIGHTS OF OTHERS. LIFE SUPPORT POLICY FAIRCHILD’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF FAIRCHILD SEMICONDUCTOR CORPORATION. As used herein: 1. Life support devices or systems are devices or systems which, (a) are intended for surgical implant into the body, or (b) support or sustain life, and (c) whose failure to perform when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in a significant injury of the user.
2. A critical component in any component of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness.
www.fairchildsemi.com 11/22/02 0.0m 001 Stock#DSxxxxxxxx 2002 Fairchild Semiconductor Corporation
