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KA7500N View Datasheet(PDF) - Estek Electronics Co. Ltd

Part Name
Description
Manufacturer
KA7500N
ESTEK
Estek Electronics Co. Ltd ESTEK
KA7500N Datasheet PDF : 4 Pages
1 2 3 4
ET-KA7500
SWITCHMODE Pulse Width Modulation Control Circuit
The KA7500 is a fixed frequency, pulse width modu lation control circuit designed primarily
for SWITCHMODE power supply control.
Complete Pulse Width Modulation Control Circuitry
On– Chip Oscillator with Master or Slave Operation
On– Chip Error Amplifiers
On– Chip 5.0 V Reference
Adjustable Deadtime Control
Uncommitted Output Transistors Rated to 500 mA Source or
Sink
Output Control for Push– Pull or Single– Ended Operation
Undervoltage Lockout
16
1
N SUFFIX
PLASTIC
ORDERING INFORMATION
KA 7500
Plastic
KA 7500
Chip
TA = - 20° to +85°C
LOGIC DIAGRAM
56
13
output control
dead time control
oscillator
4
error amp 1
pulce steering flip
flop
1
PWM comparator
2
&
T
error amp 2
16
15
reference
regulator
3
7 12 14
Pin 7 = GND
Pin 12 = Vcc
PIN ASSIGNMENT
noninv. input 1 16 noninv. input
inv. input 2 15 inv. input
feedback 3 14 ref. output
KA
dead time control 7500 output control
8
CT 5 12 Vcc
9
11
RT 6 11 collector 2
10
gnd 7 10 emitter 2
collector 1 8 9 emitter 1
1
BEIJING ESTEK ELECTRONICS CO.,LTD
 

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