LT1615ES5 Linear Technology Corporation, LT1615ES5 Datasheet

LT1615ES5

Manufacturer Part Number

LT1615ES5

Description

Manufacturer

Linear Technology Corporation

Datasheets

1.LT1615IS5.pdf (8 pages)

2.LT1615ES5.pdf (8 pages)

3.LT1615ES5.pdf (8 pages)

Specifications of LT1615ES5

Date_code

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APPLICATIO S

FEATURES

TYPICAL APPLICATIO

2.5V TO 4.2V

LCD Bias

Handheld Computers

Battery Backup

Digital Cameras

Low Quiescent Current:

Operates with V

Low V

Uses Small Surface Mount Components

High Output Voltage: Up to 34V

Low Profile (1mm) ThinSOT

20 A in Active Mode

<1 A in Shutdown Mode

CESAT

1-Cell Li-Ion to 20V Converter for LCD Bias

C1: TAIYO YUDEN LMK316BJ475

C2: TAIYO YUDEN TMK316BJ105

D1: MOTOROLA MBR0530

L1: MURATA LQH3C100K24

Switch: 250mV at 300mA

4.7 F

as Low as 1V

SHDN

LT1615

10 H

GND

Package

130k

1615/-1 TA01

1 F

20V

12mA

DESCRIPTIO

The LT

converters in a 5-lead low profile (1mm) ThinSOT pack-

age. The LT1615 is designed for higher power systems

with a 350mA current limit and an input voltage range of

1.2V to 15V, whereas the LT1615-1 is intended for lower

power and single-cell applications with a 100mA current

limit and an extended input voltage range of 1V to 15V.

Otherwise, the two devices are functionally equivalent.

Both devices feature a quiescent current of only 20 A at no

load, which further reduces to 0.5 A in shutdown. A

current limited, fixed off-time control scheme conserves

operating current, resulting in high efficiency over a broad

range of load current. The 36V switch allows high voltage

outputs up to 34V to be easily generated in a simple boost

topology without the use of costly transformers. The

LT1615’s low off-time of 400ns permits the use of tiny, low

profile inductors and capacitors to minimize footprint and

cost in space-conscious portable applications.

ThinSOT is a trademark of Linear Technology Corporation.

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

1615/LT1615-1 are micropower step-up DC/DC

Micropower Step-Up

0.1

DC/DC Converters

0.3

= 4.2V

LOAD CURRENT (mA)

LT1615/LT1615-1

Efficiency

= 2.5V

in ThinSOT

1615/-1 TA01a

= 3.3V

sn16151 16151fas

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