2-443

Functional Pin Description

resistor. Bulk capacitance should be placed between this pin

and PGND to minimize voltage deviations.

PGND (Pin 2)

PGND is power ground for the N-Channel MOSFET output

device. Tie this pin to the ground plane of the circuit board.

GND (Pin 3)

GND is signal ground for the IC. Tie this pin to the ground

plane of the circuit board.

system 5V. Provide local decoupling to this pin.

CAP (Pin 5)

Connect a capacitor to GND to set the internal amplifiers’

on-time response to a rapid voltage change at the SNS pin.

SNS (Pin 6)

SNS is the remote sense of the output voltage to be

regulated. If the output voltage increases rapidly by greater

than 1.5%, the lower amplifier responds by turning on the N-

Channel MOSFET to sink current through the OUT pin to

PGND. If the output voltage decreases rapidly by greater

than 1%, the upper amplifier responds by turning on the npn

OUT (Pin 7)

This pin is the output pin of the IC. Tie this pin directly to the

voltage to be regulated.

EN/OT or EN (Pin 8)

This pin is the only differentiation between the HIP6200 and

the HIP6201.

On the HIP6200, this pin is multiplexed. It is chip enable and

also an overtemperature indicator. When this pin is low, the

chip is disabled. If an overtemperature occurs, this pin will be

pulled low internally. Tie EN/OT to a pull-up resistor and

drive with an open collector signal.

On the HIP6201, this pin is chip enable only. Pulling it low

disables the IC. EN should be driven with a logic signal.

HIP6200, HIP6201