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CA1523 Datasheet(PDF) 1 Page - Intersil Corporation

Part No. CA1523
Description  Voltage Regulator Control Circuit for Variable Switching Regulator
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Manufacturer  INTERSIL [Intersil Corporation]
Direct Link  http://www.intersil.com/cda/home
Logo INTERSIL - Intersil Corporation

CA1523 Datasheet(HTML) 1 Page - Intersil Corporation

  CA1523 Datasheet HTML 1Page - Intersil Corporation CA1523 Datasheet HTML 2Page - Intersil Corporation CA1523 Datasheet HTML 3Page - Intersil Corporation CA1523 Datasheet HTML 4Page - Intersil Corporation CA1523 Datasheet HTML 5Page - Intersil Corporation CA1523 Datasheet HTML 6Page - Intersil Corporation  
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CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
407-727-9207
| Copyright
© Intersil Corporation 1999
CA1523
Voltage Regulator Control Circuit
for Variable Switching Regulator
Description
The CA1523 monolithic silicon integrated circuit is a variable
interval pulse regulator designed to provide the control cir-
cuitry for use in switching regulator circuits. It operates from
11V to 15V.
The regulator provides a single output drive capable of
300mA source/200mA sink. The maximum operating fre-
quency is better than 200kHz. An attractive feature of the
CA1523 is that the timing capacitor charge and discharge
current is set up externally via a single resistor. The ratio of
charge to discharge current is internally set at a maximum of
2 to 1 allowing simultaneous change in output pulse width
with increased frequency at higher load. The pulse width
variation at higher frequencies effectively compensates for
the losses in magnetics and thereby increases the power
supply efficiency at higher load end by as much as 20
percent.
Features
• Operates up to 200kHz
• Pins ESD Protected
• Remote ON/OFF
• Slow Start with Reset
• Overcurrent Sensing
• Lower Peak Currents than PWM Regulator
- Less Prone to Magnetic Saturation
Ordering Information
PART
NUMBER
TEMPERATURE
RANGE
PACKAGE
CA1523E
0oC to +70oC
14 Lead Plastic DIP
File Number
1785.2
April 1994
Pinout
CA1523 (PDIP)
TOP VIEW
ERROR
CURRENT SENSE
GND
RISE TIME
OUTPUT GND
OUTPUT
VCC
TIMING
ZENER
ON/OFF
OVER CURRENT
SLOW START
LOGIC OUTPUT
NC
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