RT6200

2

DS6200-04

August 2015

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Copyright

2015 Richtek Technology Corporation. All rights reserved.

is a registered trademark of Richtek Technology Corporation.

Functional Pin Description

Pin No.

Pin Name

Pin Function

1

BOOT

Bootstrap Supply for High-Side Gate Driver. A capacitor is connected between the

PHASE and BOOT pins to form a floating supply across the power switch driver.

This capacitor is needed to drive the power switch’s gate above the supply voltage.

2

GND

Ground. This pin is the voltage reference for the regulated output voltage. For this

reason, care must be taken in its layout. This node should be placed outside of the

D1 to C1 ground path to prevent switching current spikes from inducing voltage

noise into the part.

3

FB

Feedback Voltage Input. An external resistor divider from the output to GND tapped

to the FB pin sets the output voltage. The value of the divider resistors also set loop

bandwidth.

4

EN

Enable Control Input (Active High). If the EN pin is open, it will be pulled to high by

internal circuit. If using pull high resistor connected to VIN, the recommended value

is larger than 250k

.

5

VIN

Supply Voltage Input. Bypass VIN to GND with a suitable large capacitor to prevent

large voltage spikes from appearing at the input.

6

PHASE

Switch Node.