FA5546 Datasheet, PDF (6/27 Pages) Fuji Electric – Switching Power Supply Control IC

FA5546/47
5. Functional description of pins
Pin No.
1
2
3
4
5
6
7
8
Pin Name
L AT
FB
IS
GND
OUT
VCC
(NC)
VH
Pin function
External latch signal input. Soft start.
Feed back input. Light load and
OLP detect
Current s ense (Input)
Ground
Driver Output
Power supply
(unused)
High voltage input. Brown-out
detect
VH （NC） VCC OUT
8
7
6
5
1
2
LAT FB
3
4
IS GND
6. Rating & characteristics
* “+” shows sink and “–“ shows source in current prescription.
(1) Absolute maximum rating
Item
Power supply voltage
OUT pin output peak current
OUT pin voltage
FB pin voltage
IS pin voltage
LAT pin voltage
VH pin input voltage
Total loss (Ta = 25℃)
Junction temperature in operation
Storage temperature
Symbol
Rating
Unit
VCC
28
V
Ioh
-0.5
A
Iol
+1.0
A
VOUT
-0.3 to Vcc+0.3
V
VFB
-0.3 to 5.0
V
VIS
-2.0 to 5.0
V
VLAT
-0.3 to 5.0
V
VVH
-0.3 to 500
V
800 (DIP-8)
mW
Pd
400 (SOP-8)
mW
Tj
-30 to 125
℃
Tstg
-40 to 150
℃
○Allowable loss reduction characteristics
800mW (DIP)
400mW (SOP)
0
-30
25
85
125
Ambient Temperature Ta [℃]
Fuji Electric Co., Ltd.
AN-027E Rev.0.4
April -2011
6
http://www.fujielectric.co.jp/products/semiconductor/