TLE 6389

Target Datasheet Rev. 1.7

2

2001-09-17

operation in continuous-conduction mode allow the use of tiny surface-mount inductors.

Output capacitor requirements are also reduced, minimizing PC board area and system

costs. The output voltage is preset at 5V (TLE6389-50) or 3.3V (TLE6389-33) and

adjustable for the TLE6389. Input voltages can be up to 60V.

Pin Definitions and Functions

Pin No

SO-14

Symbol

Function

2FB

Feedback Input.

1. For adjustable-output operation connect to an external voltage divider

between the output and GND (see the Setting the Output Voltage section).

2. Sense input for fixed 5V or 3.3V output operation. FB is internally

connected to an on-chip voltage divider.

3VOUT

VOUT Input.

Input for internal supply. Connect to output if variable version is used. For

fixed voltage version connect FB and VOUT.

1

ENABLE Active-Low Enable Input. Device is placed in shutdown when Enable is

driven low. In shutdown mode, the reference, output, and external

MOSFET are turned off. Connect to logic high for normal operation.

(TLE6389G50, TLE6389G33, TLE6389GV only)

8

9

10

11

12

7

6

5

4

3

2

13

1

14

P-D-SO-14

ENABLE /

SI_EN

FB

VOUT

GND

SYNC

SI_GND

SI

CS

VS

GDRV

BDS

RO

SO

RD