DIU6921

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DIU6921 • Rev. 1.1

Pin Assignments

Figure 1. TSOT23-6 (Top view)

Pin Definitions

Pin No.

Pin Name

Description

1

GND

Power ground.

2

SW

Inductor pin. Connect this pin to the switching node of inductor.

3

VIN

Power input.

4

FB

Output feedback pin. Connect this pin to the center point of the output resistor

divider to program the output voltage: VOUT = 0.6 × (1 + R1/R2).

Add optional C2 (10 pF~47 pF) to speed up the transient response.

5

EN

Enable control. Pull high to turn on. Do not float.

6

BS

Bootstrap. Connect a capacitor and a resistor between SW and BS pins to form a

floating supply across the high-side switch driver. Recommend to use 0.1 μF BS

capacitor.