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CA1524E Datasheet

  • CA1524E

  • Regulating Pulse Width Modulator

  • 16頁

  • INTERSIL   INTERSIL

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SO
N OB
IS A
2524 RODUCT
CA
P
October 2000
LETE
CA1524, CA2524
CA3524
Regulating Pulse Width Modulator
Description
The CA1524 and CA3524 are silicon monolithic integrated
circuits designed to provide all the control circuitry for use in
a broad range of switching regulator circuits.
The CA1524 and CA3524 have all the features of the indus-
try types SG1524, SG2524, and SG3524, respectively. A
block diagram of the CA1524 series is shown in Figure 1.
The circuit includes a zener voltage reference, transconduc-
tance error ampli鏗乪r, precision R-C oscillator, pulse-width
modulator, pulse-steering 鏗俰p-鏗俹p, dual alternating output
switches, and current-limiting and shutdown circuitry. This
device can be used for switching regulators of either polarity,
transformer-coupled dc-dc converter, transformerless volt-
age doublers, dc-ac power inverters, highly ef鏗乧ient variable
power supplies, and polarity converter, as well as other
power-control applications.
Features
鈥?Complete PWM Power Control Circuitry
鈥?Separate Outputs for Single-Ended or Push-Pull
Operation
鈥?Line and Load Regulation . . . . . . . . . . . . . . . 0.2% (Typ)
鈥?Internal Reference Supply with 1% (Max) Oscillator
and Reference Voltage Variation Over Full
Temperature Range
鈥?Standby Current of Less Than 10mA
鈥?Frequency of Operation Beyond 100kHz
鈥?Variable-Output Dead Time of 0.5碌s to 5碌s
鈥?Low V
CE(sat)
Over the Temperature Range
Applications
鈥?Positive and Negative Regulated Supplies
鈥?Dual-Output Regulators
鈥?Flyback Converters
鈥?DC-DC Transformer-Coupled Regulating Converters
鈥?Single-Ended DC-DC Converters
鈥?Variable Power Supplies
Ordering Information
PART
NUMBER
CA1524E
CA1524F
CA2524E
CA2524F
CA3524E
CA3524F
TEMPERATURE
RANGE
-55
o
C to +125
o
C
-55
o
C to +125
o
C
0
o
C to +70
o
C
0
o
C to +70
o
C
0
o
C to +70
o
C
0
o
C to +70
o
C
PACKAGE
16 Lead Plastic DIP
16 Lead CerDIP
16 Lead Plastic DIP
16 Lead CerDIP
16 Lead Plastic DIP
16 Lead CerDIP
Pinout
CA1524, CA3524
(PDIP, CERDIP)
TOP VIEW
INV. INPUT
NON-
INV. INPUT
OSC OUT
(+) C.L.
SENSE
(-) C.L.
SENSE
R
T
C
T
GND
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
V
REF
V+
EMITTER B
COLLECTOR B
COLLECTOR A
EMITTER A
SHUTDOWN
COMPENSATION
AND COMPARATOR
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 321-724-7143
|
Copyright
漏
Intersil Corporation 2000
File Number
1239.4
1

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