KA7500C — SMPS Controller
April 2009
KA7500C
SMPS Controller
Features
Internal Regulator Provides a Stable 5V Reference
Supply Trimmed to ±1% Accuracy
Uncommitted Output TR for 200mA Sink or Source
Current
Output Control for Push-Pull or Single-Ended
Operation
Variable Duty Cycle by Dead-Time Control (Pin 4)
Complete PWM Control Circuit
On-Chip Oscillator with Master or Slave Operation
Internal Circuit Prohibits Double Pulse at Either
Output
Description
The KA7500C is used for the control circuit of the pulse-
width modulation switching regulator. The KA7500C
consists of 5V reference voltage circuit, two error
amplifiers, flip flop, an output control circuit, a PWM
comparator, a dead-time comparator, and an oscillator.
This device can be operated in the switching frequency
of 1kHz to 300kHz. The precision of voltage reference
(V
REF
) is improved up to ±1% with trimming. This
provides a better output voltage regulation. The
operating temperature range is -25°C ~ +85°C.
16-Lead DIP
16-Lead SOP
Ordering Information
Part Number
KA7500C
KA7500CD
KA7500CDTF
-25 to +85°C
RoHS
Operating
Temperature Range
Eco
Status
Package
16-Lead Dual Inline Package (DIP)
16-Lead Small Outline Package (SOP)
Packing Method
Tube
Tube
Tape and Reel
For Fairchild’s definition of Eco Status, please visit:
http://www.fairchildsemi.com/company/green/rohs_green.html.
© 2003 Fairchild Semiconductor Corporation
KA7500C • Rev. 1.0.2
www.fairchildsemi.com
FAIRCHILD [ FAIRCHILD SEMICONDUCTOR ]
