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2.22. IC9602 (VHiMP2367DN-1Y)
2.22.1 Block Diagram
2.22.2 Pin Connections and short description
Pin No.
Pin Name
I/O
Pin Function
1
BS
I
High-Side Gate Drive Boost Input. BS supplies the drive for the high-side N-Channel MOSFET switch.
Connect a 0.01
Connect a 0.01
µF or greater capacitor from SW to BS to power the high side switch.
2
IN
I
Power Input. IN supplies the power to the IC, as well as the step-down converter switches.
3
SW
Drive IN with a 4.45V to 28V power source. Bypass IN to GND with a suitably large capacitor to eliminate noise
on the input to the IC.
on the input to the IC.
4
GND
Ground.
5
FB
Feedback Input. FB senses the output voltage to regulate that voltage. Drive FB with a resistive voltage divider
from the output voltage. The feedback reference voltage is 0.8V.
from the output voltage. The feedback reference voltage is 0.8V.
6
COMP
Compensation Node. COMP is used to compensate the regulation control loop. Connect a series RC network
from COMP to GND to compensate the regulation control loop. In same cases, an additional capacitor from
COMP to GND is required.
from COMP to GND to compensate the regulation control loop. In same cases, an additional capacitor from
COMP to GND is required.
7
EN
Enable Input. EN is a digital input that turns the regulator on or off. Drive EN high to turn on the regulator, drive
it low to turn it off.
it low to turn it off.
8
SS
Soft-start Control Input. SS controls the soft-start period. Connect a capacitor from SS to GND to set the soft-
start period.
start period.