LTC3429ES6 Linear Technology Corporation, LTC3429ES6 Datasheet

LTC3429ES6

Manufacturer Part Number

LTC3429ES6

Description

Manufacturer

Linear Technology Corporation

Datasheets

1.LTC3429ES6.pdf (12 pages)

2.LTC3429ES6.pdf (12 pages)

Specifications of LTC3429ES6

Case

SOT23-6

Date_code

05+

Available stocks

Company

Part Number

Manufacturer

Quantity

Price

Company:

Bonase Electronics (HK) Co., Limited

Part Number:

LTC3429ES6

Manufacturer:

Quantity:

10 000

Company:

Meier Automation Equipment Co., Limited

Part Number:

LTC3429ES6#TRPBF

Manufacturer:

LT/凌特

Quantity:

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Company:

H&T Electronics

Part Number:

LTC3429ES6#TRPBF

Quantity:

825

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FEATURES

TYPICAL APPLICATIO

APPLICATIO S

Up to 96% Efficiency

True Output Load Disconnect

Inrush Current Limiting and Internal Soft-Start

Low Voltage Start-Up: 0.85V

Automatic Burst Mode

Internal Synchronous Rectifier

Current Mode Control with Internal Compensation

Short-Circuit Protection

500kHz Fixed Frequency Switching

Input Range: 0.5V to 4.4V

Output Range: 2.5V to 4.3V (Up to 5V with Schottky)

Shutdown Current: <1 A

Antiringing Control minimizes EMI

Tiny External Components

Low Profile (1mm) SOT-23 Package

MP3 Players

Digital Cameras

LCD Bias Supplies

Handheld Instruments

Wireless Handsets

GPS Receivers

Figure 1. 2-Cell to 3.3V Synchronous Boost Converter

2-CELL

4.7 F

OFF ON

Operation with I

4.7 H

SHDN

LTC3429

GND

OUT

1.02M

604k

~ 20 A

3429 F01a

10 F

3.3V

250mA

OUT

Synchronous Boost Converter

600mA, 500kHz Micropower

DESCRIPTIO

The LTC

frequency, step-up DC/DC converter with true output load

disconnect, inrush current limiting and soft-start in a low

profile 6-lead ThinSOT

supplying 100mA from a single AA cell input or 250mA

from a 2-cell AA with a 3.3V output.

A switching frequency of 500kHz minimizes overall solu-

tion footprint by allowing the use of tiny, low profile

inductors and ceramic capacitors. Current mode PWM

control with internal compensation reduces external parts

count thereby saving critical board real estate. The LTC3429

shifts automatically to power saving Burst Mode operation

at light loads. Antiringing control circuitry reduces EMI

concerns by damping the inductor in discontinuous mode.

The device also features low shutdown current of under

1 A. The true output disconnect feature allows the output

to be completely discharged in shutdown. It also limits the

inrush of current during start-up, minimizing surge cur-

rents seen by the input supply.

Burst Mode is a registered trademark of Linear Technology Corporation.

ThinSOT is a trademark of Linear Technology Corporation.

, LTC and LT are registered trademarks of Linear Technology Corporation.

with Output Disconnect

3429 is a high efficiency synchronous, fixed

100

0.1

2-Cell to 3.3V Efficiency

package. This device is capable of

OUTPUT CURRENT (mA)

= 3V

= 2.4V

100

LTC3429

3429 F01b

1000

3429f

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