T5L1.8 datasheet(2/17 Pages) TOSHIBA

Part #	T5L1.8

Description	Step-down DC-DC Converter IC

Download	17 Pages

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Manufacturer	TOSHIBA [Toshiba Semiconductor]

Direct Link	http://www.semicon.toshiba.co.jp/eng

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2 / 17 page

TB7101F(T5L1.2,F) , TB7101F(T5L1.5,F)

TB7101F(T5L1.8,F) , TB7101F(T5L2.5,F)

TB7101F(T5L3.3,F)

2007-09-06

2

How to Order

Product No.

Package Type and Capacity

TB7101F(T5L*.*,F)

Emboss Taping (3000pcs / reel )

Block Diagram

Pin Descriptions

Pin No.

Pin Symbol

Pin Description

1

PGND

Power ground.

2

VIN

Input pin. This pin is placed in the standby state if VENB = low. 1 μA or lower operating current.

3

EN

Enable pin. This pin is connected to the CMOS inverter. Applying 3.5 V or higher (@ VIN = 5 V)

to this pin causes the internal circuit to start switching control.

4

SGND

Signal ground.

5

N.C.

No connection.

6

N.C.

No connection.

7

VOUT

Output voltage pin. Output voltage is set to 1.2V / 1.5V / 1.8V / 2.5V / 3.3V(typ.) internally.

8

LX

Switching pin. This pin is connected to high-side pch MOS FET and low-side nch MOS FET.

PGND

DRIVER

OSCILLATOR

Current

Detection

VIN

+

-

DRIVER

VOUT

SGND

+

-

VCOMP

Error

Amplifier

Slope

Compensation

+

-

Control

Logic

Phase

Compensation

PWM

comparator

0.8V(TYP.)

Heat

Protection

Under voltage lock out

Soft Start

Reference voltage

Lx

EN

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T5L1.8 Datasheet(PDF) 2 Page - Toshiba Semiconductor

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