SGP400 Datasheet, PDF (2/15 Pages) Fairchild Semiconductor – Low-Power Green-Mode PWM Flyback Power Controller without Secondary Feedback

Product Specification
Low-Power Green-Mode PWM Flyback Power Controller without Secondary Feedback
SGP400
MARKING INFORMATION
PIN CONFIGURATION
XXXMW
XXX: AAK=SGP400;
: Lead Free
M: Mask Version
W: Week code A~Z=W1~W26
A~Z=W27~W52
GND
FB
N.C.
SOT-26
GATE
VDD
SENSE
SGP400DP
XXXXXXXXYWWV
D: D=DIP
P: Z=Lead free
Null=Regular package
XXXXXXXX: Wafer Lot
Y: Year
WW: Week
V: Assembly Location
GATE
VDD
N.C.
SENSE
DIP-8
GND
FB
N.C.
N.C.
ORDERING INFORMATION
Part Number
PWM Frequency
SGP400TZ
65KHz
SGP400DZ
65KHz
Pb-Free
Package
6-Pin SOT-26
8-Pin DIP-8
PIN DESCRIPTIONS
Pin No.
Name
Type
DIP-8 SOT-26
Function
GATE 1
6
Driver Output The totem-pole output driver to drive the power MOSFET.
VDD
2
5
Supply
Power supply.
NC
3
NA
NC pin.
SENSE 4
4
Current sense. It senses the voltage across a sensed resistor. To provide over-current
Analog Input protection, PWM output is disabled if the voltage exceeds an internal threshold. This pin
also provides current information for current-mode control.
NC
5
3
NC pin.
NC
6
NA
NC pin.
FB
7
2
Feedback. The FB pin provides feedback information to the internal PWM comparator.
Analog Input This feedback is used to control the duty cycle. When no feedback is provided, this pin is
left open.
GND
8
1
Supply
Ground.
© System General Corp.
Version 1.0.1 (IAO33.0084.B0)
-2-
www.sg.com.tw • www.fairchildsemi.com
September 24, 2007