LT1933ES6PBF Linear Technology Corporation, LT1933ES6PBF Datasheet

LT1933ES6PBF

Manufacturer Part Number

LT1933ES6PBF

Description

SOT-23

Manufacturer

Linear Technology Corporation

Datasheet

1.LT1933IS6PBF.pdf (20 pages)

Specifications of LT1933ES6PBF

Date_code

10+

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FEATURES

APPLICATIONS

TYPICAL APPLICATION

4.5V TO 36V

Wide Input Range: 3.6V to 36V

5V at 600mA from 16V to 36V Input

3.3V at 600mA from 12V to 36V Input

5V at 500mA from 6.3V to 36V Input

3.3V at 500mA from 4.5V to 36V Input

Fixed Frequency 500kHz Operation

Uses Tiny Capacitors and Inductors

Soft-Start

Internally Compensated

Low Shutdown Current: <2μA

Output Adjustable Down to 1.25V

Low Proﬁ le (1mm) SOT-23 (ThinSOT™) and

(2mm × 3mm × 0.75mm) 6-Pin DFN Packages

Automotive Battery Regulation

Industrial Control Supplies

Wall Transformer Regulation

Distributed Supply Regulation

Battery-Powered Equipment

OFF ON

2.2μF

SHDN

3.3V Step-Down Converter

GND

LT1933

BOOST

10k

16.5k

0.1μF

MBRM140

1N4148

22μH

1933 TA01a

22μF

3.3V/500mA

OUT

SOT-23 and DFN Packages

600mA, 500kHz Step-Down

DESCRIPTION

The LT

converter with an internal 0.75A power switch, packaged

in a tiny 6-lead SOT-23. The wide input range of 3.6V

to 36V makes the LT1933 suitable for regulating power

from a wide variety of sources, including unregulated wall

transformers, 24V industrial supplies and automotive

batteries. Its high operating frequency allows the use of

tiny, low cost inductors and ceramic capacitors, resulting

in low, predictable output ripple.

Cycle-by-cycle current limit provides protection against

shorted outputs, and soft-start eliminates input current

surge during start up. The low current (<2μA) shutdown

provides output disconnect, enabling easy power manage-

ment in battery-powered systems.

L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear

Technology Corporation. ThinSOT is a trademark of Linear Technology Corporation. All other

trademarks are the property of their respective owners.

1933 is a current mode PWM step-down DC/DC

Switching Regulator in

= 12V

100

LOAD CURRENT (mA)

200

Efﬁ ciency

OUT

300

OUT

= 5V

= 3.3V

400

500

1933 TA01b

LT1933

600

1933fe

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