Note: All information contained in this data sheet has been carefully checked and is believed to be accurate as of the date of publication; however, this data sheet cannot be a “controlled document”. Current revisions, if any, to these

specifications are maintained at the factory and are available upon your request. We recommend checking the revision level before finalization of your design documentation.

© 2001 Elantec Semiconductor, Inc.

General Description

The EL7512C is a high frequency, high efficiency step-up DC:DC

regulator operated at fixed frequency PWM mode. With an integrated

1A MOSFET, it can deliver up to 600mA output current at up to 90%

efficiency. The adjustable switching frequency is up to 1.2MHz, mak-

ing it ideal for DSL applications.

When shut down, it draws <3µA of current. This feature, along with

the minimum starting voltage of 2V, makes it suitable for portable

equipment powered by one lithium ion or 3 to 4 NiMH cells.

The EL7512C is available in a 10-pin MSOP package, with maximum

height of 1.1mm. With proper external components, the whole con-

This device is specified for operation over the full -40°C to +85°C

temperature range.

Typical Application Diagram

1

2

3

4

10

9

8

7

5

6

EL7512C

PGND

SGND

RT

EN

LBI

LX

VDD

FB

SS

LBO

47µF

80.6k

Ω

10k

Ω

4.7nF

10µH

100k

20nF

10µF

(2V-

9V)

(12V up

to

400mA)

Features

• 90% efficiency

• Up to 1.2MHz adjustable

frequency

• < 3µA shutdown current

• Adjustable soft-start

• Low battery detection

• Internal thermal protection

• 1.1mm max height 10-pin MSOP

package

Applications

• 3V to 5V, 12V, and 18V

converters

• 5V to 12V and 16V converters

• TFT-LCD

• DSL

• Portable equipment

• Desktop equipment

Ordering Information

Part No

Package

Tape & Reel

Outline #

EL7512CY

10-Pin MSOP

MDP0043

EL7512C - Preliminary

High Frequency PWM Step-Up Regulator