Jul. 12. 2012 / Preliminary

2/13

* This specifications are subject to be changed without notice

http://www.ad-tech.co.kr

ADT6780

Thermally enhanced Low V

Part List

Pin Description

Pin No.

Name

Description

1BST

High-Side Gate Drive Boost Input. This pin acts as the power supply of high-side gate

driving blocks. Connect a 10nF or greater capacitor between SW and BST pin.

2VIN

Power supply input. Bypass VIN to GND with a suitably large capacitor to eliminate

noise on the input to the IC.

3

SW

Switching node. The free-wheeling diode is connected between SW and GND.

4

GND

Ground. Connect the exposed pad on backside to GND.

5

FB

Feedback voltage input. The regulated FB voltage is 0.2V typically.

6

COMP

Compensation node. COMP is used to compensate the regulation control loop.

7

EN

Chip enable input. Also this pin functions UVLO input.

8

SS

Soft start control node. This pin controls the soft start period.

Component

Type

Value (Model)

Manufacturer

U1

IC

ADT6780

ADTech

D1

Schottky Barrier Diode

B230A

DIODES

L1

Chip inductor

6.8uH / 3A

TDK

C1

MLCC

10㎌ / 35V

-

C2

MLCC

10㎌ / 10V

-

C3

MLCC

8.2㎋

-

C4

MLCC

100㎋

-

C5

MLCC

10㎋

-

R1

Chip resistor

0.2Ω / 1%

-

R2

Chip resistor

2㏀

-

1

2

3

45

6

7

8

BST

VIN

SW

GND

FB

COMP

EN

SS

exposed pad

* connect to GND

Package outline

ADT6780