KA7500C
SMPS Controller
Features
Description
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
The KA7500C is used for the control circuit of the pulsewidth 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
(VREF) is improved up to ±1% with trimming. This
provides a better output voltage regulation. The
operating temperature range is -25°C ~ +85°C.
Internal Circuit Prohibits Double Pulse at Either
Output
16-Lead DIP
16-Lead SOP
Ordering Information
Part Number
Operating
Temperature Range
Eco
Status
KA7500C
KA7500CD
Package
16-Lead Dual Inline Package (DIP)
-25 to +85°C
KA7500CDTF
RoHS
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
KA7500C — SMPS Controller
April 2009
