SG6903SZ Fairchild Semiconductor, SG6903SZ Datasheet - Page 17

IC PFC CONTROLLER 16SOIC

SG6903SZ

Manufacturer Part Number
SG6903SZ
Description
IC PFC CONTROLLER 16SOIC
Manufacturer
Fairchild Semiconductor
Datasheet

Specifications of SG6903SZ

Mounting Type
Surface Mount
Package / Case
16-SOIC (3.9mm Width)
Output Voltage
1.5 V to 8 V
Switching Frequency
65 KHz
Operating Temperature Range
- 20 C to + 85 C
Mounting Style
SMD/SMT
Duty Cycle (max)
83 %
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Voltage - Supply
-
Operating Temperature
-
Frequency - Switching
-
Mode
-
Current - Startup
-
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Green Mode PFC/Flyback-PWM Controller
Limited Power Control
shorted or over loaded, the FBPWM voltage will increase.
If the FBPWM voltage is higher than a designed threshold,
FB
OPWM will then be turned off.
V
not be enabled. And this protection will be reset every
t
protection will then be achieved to prevent the power
supply from being overheated under over loading
condition.
© System General Corp.
Version 1.0.1 (IAO33.0061.B0)
OPEN-PWM-Hiccup
DD-OFF
OPEN-LOOP
Every time when the output of power supply is
As long as the voltage on the VDD pin is larger than
(minimum operating voltage), the OPWM will
(4.5V), for longer than t
interval. A low frequency hiccup mode
OPEN-PWM
(56ms), the
- 17 -
Gate Drivers
The output driver is clamped by an internal 18V Zener
diode in order to protect the external power MOSFET.
SG6903 output stage is a fast totem-pole gate driver.
www.sg.com.tw • www.fairchildsemi.com
Product Specification
September 28, 2007
SG6903

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