FA5527 FUJI [Fuji Electric], FA5527 Datasheet - Page 5

• Manufacturer Part Number: FA5527
• Description: Fuji Switching Power Control IC
• Manufacturer: FUJI [Fuji Electric]

4. Block diagram
5. Pin assignments
AN-087E Rev.1.0
April-2011
Fuji Electric Co., Ltd.
Pin
1
2
3
4
5
6
7
8
Symbol
CS
FB
IS
GND
OUT
VCC
(NC)
VH
FB
(2)
FB
(2)
7.4k
7.4k
Function
Soft start/latch-mode stop
Feedback input
Current sensor input
Ground
Output
Power supply
No connection
High voltage input
60k
20k
60k
20k
FA5526 / FA5527 / FA5528 for Timer Latched OCP
FA5536 / FA5537 / FA5538 for Auto-Recovery OCP
5V reg
5V reg
2.9V
2.9V
5V
UVLO
5V
UVLO
4.0V/3.5V
4.0V/3.5V
OverLoad
OverLoad
1Meg
1Meg
FA5526/5527/5528/5536/5537/5538
VCC
VCC
ENB
ENB
0.28V
0.28V
5pF
5pF
GENERATOR
GENERATOR
4.8V
4.8V
SLOPE
SLOPE
+
+
Auto-Recovery
VCO
VCO
-
-
Σ
Σ
OSC
OSC
Latch
8.5V/7.9V
8.5V/7.9V
x1
x1
Buf
Buf
Q
Q
T
T
Description
Time Setting of Soft start and Over Current Protection
Input for controlling current comparator threshold voltage
Input for monitoring MOSFET current
Power supply ground
Output for directly driving a MOSFET
Power supply for ICs
No connection
Input terminal for start-up circuit
IS (3)
IS (3)
CS (1)
CS (1)
3R
3R
5
0.68V
0.68V
11µA/4µA
11µA/4µA
0.52V
0.52V
R
R
TRG
TRG
Blanking
Blanking
1.3mA
1.3mA
1 shot
1 shot
CLR
CLR
IS comp.
IS comp.
Q
Q
OVP
28V
OVP
28V
S
R
S
R
15V/9V
F.F.
15V/9V
F.F.
http://www.fujielectric.co.jp/products/semiconductor/
UVLO
UVLO
Q
Q
Q
Q
ENB
ENB
START
START
off
off
OUT
OUT
PUT
PUT
30V
30V
GND
GND
VCC
OUT
VCC
OUT
VH
VH
(8)
(6)
(5)
(4)
(8)
(6)
(5)
(4)