FAN7602 Fairchild Semiconductor, FAN7602 Datasheet - Page 3

• Manufacturer Part Number: FAN7602
• Description: Green Current Mode PWM Controller
• Manufacturer: Fairchild Semiconductor

FAN7602 Rev. 1.0.2
© 2006 Fairchild Semiconductor Corporation
Pin Assignments
Pin Definitions
Pin Number
1
2
3
4
5
6
7
8
Latch/Plimit
Pin Name
CS/FB
LUVP
GND
OUT
V
V
NC
CC
str
Line Under-Voltage Protection Pin. This pin is used to protect the set when the
input voltage is lower than the rated input voltage range.
Gate Drive Output Pin. This pin is an output pin to drive an external MOSFET. The
peak sourcing current is 450mA and the peak sinking current is 600mA. For proper
operation, the stray inductance in the gate driving path must be minimized.
Supply Voltage Pin. IC operating current and MOSFET driving current are supplied
using this pin.
Latch Protection and Power Limit Pin. When the pin voltage exceeds 4V, the latch
protection works. The latch protection is reset when the V
For the power limit function, the Over-Current Protection (OCP) level decreases as
the pin voltage increases.
Current Sense and Feedback Pin. This pin is used to sense the MOSFET current
for the current mode PWM and OCP. The output voltage feedback information and
the current sense information are added using an external RC filter.
Ground Pin. This pin is used for the ground potential of all the pins. For proper oper-
ation, the signal ground and the power ground should be separated.
No Connection.
start-up, the internal JFET is turned off to reduce power loss.
Start-up Pin. This pin is used to supply IC operating current during IC start-up. After
Figure 3. Pin Configuration (Top View)
LUVP
V
8
1
str
F A N 7 6 0 2
Latch/
Plimit
NC
7
2
3
Pin Function Description
CS/FB
Y W W
V
6
3
CC
FAN7602 Rev. 03
GND
OUT
5
4
CC
voltage is lower than 5V.
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