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FAN7602 Rev. 1.0.1
FAN7602 Green Current Mode PWM Controller
Pin Assignments
Figure 3. Pin Configuration (Top View)
Pin Definitions
Pin Number Pin Name Pin Function Description
1LUVPLine Under Voltage Protection Pin. This pin is used to protect the set when the
input voltage is lower than the rated input voltage range.
2 Latch/Plimit Latch Protection and Power Limit Pin. When the pin voltage exceeds 4V, the latch
protection works and the latch protection is reset when the Vcc voltage is lower than
5V. For the power limit function, the OCP level decreases as the pin voltage
increases.
3CS/FBCurrent 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 external RC filter.
4GNDGround 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.
5OUTGate 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.
6 Vcc Supply Voltage Pin. IC operating current and MOSFET driving current are supplied
using this pin.
7NCNo Connection.
8 Vstr Start-up Pin. This pin is used to supply IC operating current during IC start-up. After
start-up, the internal JFET is turned off to reduce power loss.
FAN7602
1
2
6
5
8
7
YWW
3
4
Latch/
Plimit
GNDCS/FBLUVP
Vstr NC Vcc Out
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