secondary. The circuit functions are structured by
anticipating transformer output transitions then
turns the power MOSFET on or off before the
transitions of the transformer to minimize body
drain diode conduction and reduce associated
losses.
Application
- Power Adapter.
（50~120W
for LCD Monitor & NB…etc.）
Pin Assignment
Pin Descriptions
Name
V
CC
V
R
V
DC
V
OUT
GND
Description
Operating voltage input
Reference input voltage
Duty cycle input voltage
Output voltage for driving N channel
MOSFET
Ground
( Top View )
V
CC
1
GND 2
V
DC
3
SOT89-5L
( Top View )
V
OUT
1
V
CC
2
V
DC
3
V
R
4
SOP-8L
AP436
8 GND
7 GND
6 GND
5 GND
AP436
7 V
R
4
5 V
OUT
TAB
(GND)
Ordering Information
AP436 XX X
Package
S : SOP-8L
Y : SOT89-5L
Packing
Blank: Tube
A : Taping
This datasheet contains new product information. Anachip Corp. reserves the rights to modify the product specification without notice. No liability is assumed as a result of the use of
this product. No rights under any patent accompany the sale of the product.
Rev.1.0 Oct 4, 2005
1/6
AP436
Synchronous Rectifier MOSFET Driver
Block Diagrams
V
CC
Start-Up
I
B1
V
R
V
DC
I
B2
5.6V
High
Speed
Comparator
Block
Buffer
V
OUT
15K
GND
Absolute Maximum Ratings
Symbol
V
CC
V
R
V
DC
V
OUT
P
D
T
ST
T
OP
V
OP
Parameter
Supply Voltage
Reference input voltage
Duty cycle input voltage
Output voltage to Ground
Power dissipation
Storage temperature range
Operating temperature range
Operating voltage range
Rating
14
-0.3≦V≦2.5
-0.3≦V≦V
CC
-2.1
-0.7
1
-65 to 150
-40 to +125
7.2 to 14
Unit
V
V
V
V
W
o
C
o
C
V
Anachip Corp.
www.anachip.com.tw
Rev.1.0 Oct 4, 2005
2/6
AP436
Synchronous Rectifier MOSFET Driver
Electrical Characteristics
Unless otherwise specified, guaranteed for Tj=25 C, V
京公网安备 11010802033920号
EEWORLD
