TN4Q06 Sanyo Semiconductor Corporation, TN4Q06 Datasheet - Page 3

• Manufacturer Part Number: TN4Q06
• Description: Quasi-resonant Switching Power Supply Expd
• Manufacturer: Sanyo Semiconductor Corporation

Block Diagram
Pin Definitions and Functions
Circuit Function Diagram
Pin No.
EDGE pin
1
2
3
4
5
V DD pin
OCP
Input voltage
compensation
resistor
FB pin
FB / OCP
adjusting resistor
SOURCE (GND)
4
2
1
Symbol
DRAIN
EDGE
V DD
FB
+
Reference voltage
Overvoltage
protection
Overcurrent /
FB comparator
Internal power supply
Over current / feedback terminal
EDGE dtection terminal
DRAIN terminal
Power supply terminal
Source (Ground) terminal
Falling edge detection
Delay time setting capacitor and resistor
Voltage resonance capacitor
4
1
5
3
2
Latch circuit
Name
Driver
Starting resistors
Logic
Undervoltage protection
TN4Q06
Burst circuit
Snubber circuit
+
Delay EDGE Input voltage
Power MOSFET Drain
Power MOSFET Source (Ground)
Input for feedback voltage and current sence
Input for Start-up voltage and drive voltage
Oscillator
Error amplifier
V CC circuit
+
3
5
SOURCE
(GND) pin
DRAIN pin
Function
GND
+B
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