Datasheet > LT1934

LT1934

更新时间： 2023-12-20 18:46:19

品牌	Logo	应用领域
亚德诺 - ADI		开关稳压器
页数	文件大小	规格书
20页	239K
描述
采用 ThinSOT 和 DFN 封装的微功率、降压型开关稳压器

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中文翻译

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数据手册

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LT1934 数据手册

LT1934/LT1934-1

Micropower Step-Down

Switching Regulators

in ThinSOT and DFN

FEATURES

DESCRIPTION

TheLT^®1934isamicropowerstep-downDC/DCconverter

with internal 400mA power switch, packaged in a low

proﬁle (1mm) ThinSOT. With its wide input range of 3.2V

to 34V, the LT1934 can regulate a wide variety of power

sources, from 4-cell alkaline batteries and 5V logic rails

to unregulated wall transformers and lead-acid batteries.

Quiescent current is just 12μA and a zero current shut-

down mode disconnects the load from the input source,

simplifying power management in battery-powered sys-

tems. Burst Mode^®operation and the low drop internal

power switch result in high efﬁciency over a broad range

of load current.

Wide Input Voltage Range: 3.2V to 34V

Micropower Operation: I = 12μA

5V at 250mA from 6.5V to 34V Input (LT1934)

5V at 60mA from 6.5V to 34V Input (LT1934-1)

3.3V at 250mA from 4.5V to 34V Input (LT1934)

3.3V at 60mA from 4.5V to 34V Input (LT1934-1)

Low Shutdown Current: <1μA

Low V

Switch: 200mV at 300mA

CESAT

Low Proﬁle (1mm) SOT-23 (ThinSOT™) and

(2mm × 3mm × 0.8mm) 6-Pin DFN Package

APPLICATIONS

The LT1934 provides up to 300mA of output current. The

LT1934-1 has a lower current limit, allowing optimum

choice of external components when the required output

current is less than 60mA. Fast current limiting protects

the LT1934 and external components against shorted

outputs, even at 34V input.

Wall Transformer Regulation

Automotive Battery Regulation

Standby Power for Portable Products

Distributed Supply Regulation

Industrial Control Supplies

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

Burst Mode is a registered trademark of Linear Technology Corporation.

ThinSOT is a trademark of Linear Technology Corporation.

All other trademarks are the property of their respective owners.

TYPICAL APPLICATION

3.3V Step-Down Converter

Efﬁciency

100

LT1934

= 12V

0.22μF

BOOST

= 5V

47μH

OUT

3.3V

4.5V TO 34V

250mA

2.2μF

OUT

= 3.3V

LT1934

10pF

100μF

ON OFF

SHDN

GND

604k

C1: SANYO 4TPB100M

1934 TA01

0.1

100

C2: TAIYO YUDEN GMK325BJ225MN

D1: ON SEMICONDUCTOR MBR0540

D2: CENTRAL CMDSH-3

LOAD CURRENT (mA)

1934 TA02

L1: SUMIDA CDRH4D28-470

1934fe

12 3 4 5 6 7...20

中文翻译

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与LT1934相关器件

型号	品牌	获取价格	描述	数据表
LT1934_15	Linear	获取价格	Micropower Step-Down Switching Regulators in ThinSOT and DFN
LT1934-1	Linear	获取价格	Micropower Step-Down Switching Regulators in ThinSOT
LT1934-1_15	Linear	获取价格	Micropower Step-Down Switching Regulators in ThinSOT and DFN
LT1934EDCB	Linear	获取价格	暂无描述
LT1934EDCB#PBF	Linear	获取价格	暂无描述
LT1934EDCB#TR	Linear	获取价格	IC 0.49 A SWITCHING REGULATOR, PDSO6, 2 X 3 MM, 0.80 MM HEIGHT, PLASTIC, MO-229, DFN-6, Sw
LT1934EDCB#TRMPBF	Linear	获取价格	LT1934 - Micropower Step-Down Switching Regulators in ThinSOT; Package: DFN; Pins: 6; Temp
LT1934EDCB#TRPBF	Linear	获取价格	LT1934 - Micropower Step-Down Switching Regulators in ThinSOT; Package: DFN; Pins: 6; Temp
LT1934EDCB-1	Linear	获取价格	IC 0.16 A SWITCHING REGULATOR, PDSO6, 2 X 3 MM, 0.80 MM HEIGHT, PLASTIC, MO-229, DFN-6, Sw
LT1934EDCB-1#PBF	Linear	获取价格	LT1934 - Micropower Step-Down Switching Regulators in ThinSOT; Package: DFN; Pins: 6; Temp

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