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CA0723 Schematic ( PDF Datasheet ) - Intersil Corporation

Teilenummer CA0723
Beschreibung Voltage Regulators Adjustable
Hersteller Intersil Corporation
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Gesamt 9 Seiten
CA0723 Datasheet, Funktion
www.DataSheet.in
Data Sheet
CA723, CA723C
April 1999
File Number 788.4
Voltage Regulators Adjustable from 2V to
37V at Output Currents Up to 150mA
without External Pass Transistors
The CA723 and CA723C are silicon monolithic integrated
circuits designed for service as voltage regulators at output
voltages ranging from 2V to 37V at currents up to 150mA.
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 CA723 and CA723C 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 150mA and
in excess of 10A with the use of suitable NPN or PNP
external pass transistors.
Ordering Information
PART
NUMBER
CA0723E
CA0723T
CA0723CE
TEMP. RANGE
(oC)
PACKAGE
-55 to 125 14 Ld PDIP
-55 to 125 10 Pin Can
0 to 70
14 Ld PDIP
PKG. NO.
E14.3
T10.C
E14.3
Features
• Up to 150mA Output Current
• Positive and Negative Voltage Regulation
• Regulation in Excess of 10A with Suitable Pass
Transistors
• Input and Output Short-Circuit Protection
• Load and Line Regulation . . . . . . . . . . . . . . . . . . . .0.03%
• Direct Replacement for 723 and 723C Industry Types
• Adjustable Output Voltage . . . . . . . . . . . . . . . . . 2V to 37V
Applications
• Series and Shunt Voltage Regulator
• Floating Regulator
• Switching Voltage Regulator
• High-Current Voltage Regulator
• Temperature Controller
Pinouts
CA723 (PDIP)
TOP VIEW
NC 1
CURRENT
LIMIT
2
CURRENT
SENSE
3
INV
INPUT
4
NON-INV
INPUT
5
-
ERROR
AMP
+
VREF 6
VOLT
REF
V- 7
14 NC
13 FREQ
COMP
12
V+ UNREG
INPUT
11 VC
10 VO
9 VZ
8 NC
CA723C (CAN)
TOP VIEW
CURRENT
SENSE
CURRENT LIMIT
TAB
10
1
9
FREQ
COMP
INV
INPUT 2
NON-INV
INPUT
3
+
ERROR
A- MP
VOLT
REF
V+
8 UNREG
INPUT
7 VC
VREF 4
5 6 VO
V-, (CASE INTERNALLY
CONNECTED TO TERM 5)
3-3 CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
http://www.intersil.com or 407-727-9207 | Copyright © Intersil Corporation 1999






CA0723 Datasheet, Funktion
www.DataSheet.in
CA723, CA723C
Typical Performance Curves (CA723) (Continued)
1.2 AMBIENT TEMPERATURE (TA) = 25oC
1.0
0.8
0.6
0.4
0.2
0
0
70oC
0oC
10 20 40 60 80 100
OUTPUT CURRENT (mA)
FIGURE 12. CURRENT LIMITING CHARACTERISTICS
OUTPUT VOLTAGE (VO) = REFERENCE
VOLTAGE (VREF)
LOAD CURRENT (IL) = 0
5
4
AMBIENT TEMPERATURE (TA) = 25oC
3
2
1
0oC
70oC
0
0 10 20 30 40
INPUT VOLTAGE (V)
FIGURE 13. QUIESCENT CURRENT vs INPUT VOLTAGE
Typical Performance Curves (CA723 and CA723C)
INPUT VOLTAGE (VI) = 12V
OUTPUT VOLTAGE (VO) = 5V
0.2
LOAD CURRENT (IL) = I TO 50mA
AMBIENT TEMPERATURE (TA) = 25oC
SHORT CIRCUIT PROTECTION
0.1 RESISTANCE (RSCP) = 0
0
-0.1
-0.2
-0.3
-5
5 15 25 35 45
DIFFERENTIAL INPUT - OUTPUT VOLTAGE (V)
FIGURE 14. LOAD REGULATION vs DIFFERENTIAL INPUT-
OUTPUT VOLTAGE
OUTPUT VOLTAGE (VO) = 5V
0.3
LOAD CURRENT (IL) = 1mA
AMBIENT TEMPERATURE (TA)
=
25oC
DIFFERENTIAL INPUT VOLTAGE (VT) = 3V
SHORT CIRCUIT PROTECTION RESISTANCE
0.2 (RSCP) = 0
0.1
0
-0.1
-0.2
-5 5 15 25 35 45
DIFFERENTIAL INPUT - OUTPUT VOLTAGE (V)
FIGURE 15. LINE REGULATION vs DIFFERENTIAL INPUT-
OUTPUT VOLTAGE
INPUT VOLTAGE (VI) = 12V, OUTPUT VOLTAGE (VO) = 5V
15
LOAD CURRENT (IL) = 40mA
AMBIENT TEMPERATURE (TA)
=
25oC
SHORT CIRCUIT PROTECTION RESISTANCE (RSCP) = 0
LOAD CURRENT (IL)
10
5 OUTPUT VOLTAGE (VO)
0
5
10
-5
5 15 25 35
TIME (µs)
45
10
0
-10
-20
-30
FIGURE 16. LINE TRANSIENT RESPONSE
0.8
CURRENT LIMITING
SENSE VOLTAGE
0.7
200
160
0.6
SHORT CIRCUIT LIMITING
CURRENT WITH RSCP = 5
0.5
120
80
0.4 WITH RSCP = 10
40
0.3 0
-50 0 50 100 150
JUNCTION TEMPERATURE (oC)
FIGURE 17. CURRENT LIMITING CHARACTERISTIC vs
JUNCTION TEMPERATURE
3-8

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