FA5640 Datasheet, PDF (7/35 Pages) Fuji Electric – Fuji Switching Power Supply Control IC

FA5640/41/42
5. Functional description of pins
Pin number
1
2
3
4
5
6
7
8
Pin name
ZCD
FB
IS
GND
OUT
VCC
(N.C.)
VH
Pin function
Zero current detection, OVP detection
Feedback input, OLP detection, Burst operation control
Current sense input, Over-current limiter, Standby signal detection
Ground
Output
Power supply, UVLO, VH pin current control
（No connection）
High voltage input
6. Rating and characteristics
* “+” shows sink and “–“ shows source in current prescription.
(1) Absolute maximum ratings
Item
Symbol
Rating
Unit
Supply voltage
Peak current at OUT pin (Note 1)
The voltage at OUT pin
Input voltage at FB and IS pin
The current at FB and IS pin
The current at ZCD pin
The voltage at ZCD pin
Input voltage at VH pin
Power dissipation（Ta=25℃）
Operating junction temperature
Storage temperature
Vcc
28
V
IoH
-0.25
A
IoL
+0.5
A
Vout
-0.3 to Vcc+0.3
V
Vfb, Vis
-0.3 to 5.0
V
Ifb, Iis
-0.3 to +0.3
mA
IsoZCD
-2.0
mA
IsiZCD
+3.0
mA
Vzcd
-2 to +8
V
VVH
-0.3 to 500
V
Pd
400
mW
Tj
-40 to +125
℃
Tstg
-40 to +150
℃
Note 1) Please consider power supply voltage and load current well and use this IC within maximum power
dissipation, operating junction temperature and recommended ambient temperature in operation. The IC
may cross over maximum power dissipation at normal operating condition by power supply voltage or load
current within peak current absolute maximum rating.
* Allowable loss reduction characteristics
400
Package thermal resistor
θj-a= 250℃／W
0
-40
25
85
125
周囲温度
Ambiance temperature Ta [℃]
Fuji Electric Co., Ltd.
AN-064E Rev.1.1
7
April 2011
http://www.fujielectric.co.jp/products/semiconductor/