LM2733YMF+ National Semiconductor, LM2733YMF+ Datasheet

LM2733YMF+

Manufacturer Part Number

LM2733YMF+

Description

Manufacturer

National Semiconductor

Datasheets

1.LM2733YMFX.pdf (16 pages)

2.LM2733XMF.pdf (13 pages)

Specifications of LM2733YMF+

Notes

NEW

Date_code

10+

Current page: 1 of 16
Download datasheet (407Kb)

LM2733

0.6/1.6 MHz Boost Converters With 40V Internal FET Switch

in SOT-23

General Description

The LM2733 switching regulators are current-mode boost

converters operating fixed frequency of 1.6 MHz (“X” option)

and 600 kHz (“Y” option).

The use of SOT-23 package, made possible by the minimal

power loss of the internal 1A switch, and use of small induc-

tors and capacitors result in the industry's highest power

density. The 40V internal switch makes these solutions per-

fect for boosting to voltages of 16V or greater.

These parts have a logic-level shutdown pin that can be used

to reduce quiescent current and extend battery life.

Protection is provided through cycle-by-cycle current limiting

and thermal shutdown. Internal compensation simplifies de-

sign and reduces component count.

Typical Application Circuit

1.6 MHz

Switch Frequency

0.6 MHz

200554

20055424

Features

■

Applications

■

40V DMOS FET switch

1.6 MHz (“X”), 0.6 MHz (“Y”) switching frequency

Low R

Switch current up to 1A

Wide input voltage range (2.7V–14V)

Low shutdown current (<1 µA)

5-Lead SOT-23 package

Uses tiny capacitors and inductors

Cycle-by-cycle current limiting

Internally compensated

White LED Current Source

PDA’s and Palm-Top Computers

Digital Cameras

Portable Phones and Games

Local Boost Regulator

(ON) DMOS FET

20055457

www.national.com

July 2007

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