Datasheet > LT3970

LT3970

更新时间： 2024-11-24 14:57:51

品牌	Logo	应用领域
亚德诺 - ADI		二极管稳压器
页数	文件大小	规格书
24页	689K
描述
具有2.5μA静态电流和集成二极管的40V、350mA降压型稳压器

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LT3970 数据手册

LT3970 Series

40V, 350mA Step-Down

Regulator with 2.5µA Quiescent

Current and Integrated Diodes

FEATURES

DESCRIPTION

Low Ripple Burst Mode^®Operation

The LT^®3970 is an adjustable frequency monolithic buck

switching regulator that accepts a wide input voltage

range up to 40V, and consumes only 2.5µA of quiescent

2.5µA I at 12V to 3.3V

OUT

Output Ripple < 5mV

P-P

Wide Input Voltage Range: 4.2V to 40V Operating

Adjustable Switching Frequency: 200kHz to 2.2MHz

Integrated Boost and Catch Diodes

current. A high efficiency switch is included on the die

along with the catch diode, boost diode, and the neces-

sary oscillator, control and logic circuitry. Low ripple Burst

Mode operation maintains high efficiency at low output

currents while keeping the output ripple below 5mV in

a typical application. Current mode topology is used for

fast transient response and good loop stability. A catch

diode current limit provides protection against shorted

outputs and overvoltage conditions. An enable pin with

accurate threshold is available, producing a low shutdown

350mA Output Current

Fixed Output Voltages: 3.3V, 3.42V, 5V

1.8µA I at 12V

Accurate 1V Enable Pin Threshold

Low Shutdown Current: I = 0.7µA

Internal Sense Limits Catch Diode Current

Power Good Flag

Output Voltage: 1.21V to 25V

current of 0.7µA. A power good flag signals when V

OUT

Internal Compensation

reaches 90% of the programmed output voltage. The

LT3970 is available in small 10-pin MSOP and 3mm ×

2mm DFN packages.

Small 10-Pin MSOP and (3mm × 2mm) DFN Packages

AEC-Q100 Qualified for Automotive Applications

All registered trademarks and trademarks are the property of their respective owners.

APPLICATIONS

Automotive Battery Regulation

Power for Portable Products

Industrial Supplies

TYPICAL APPLICATION

Efficiency

5V Step-Down Converter

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Rev. D

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与LT3970相关器件

型号	品牌	获取价格	描述	数据表
LT3970_12	Linear	获取价格	40V, 350mA Step-Down Regulator with 2.5μA
LT3970-3.3	Linear	获取价格	40V, 350mA Step-Down Regulator with 2.5μA Qui
LT3970-5	Linear	获取价格	40V, 350mA Step-Down Regulator with 2.5μA Qui
LT3970EDDB#PBF	Linear	获取价格	LT3970 Series - 40V, 350mA Step-Down Regulator with 2.5µA Quiescent Current and I
LT3970EDDB#TRMPBF	Linear	获取价格	LT3970 Series - 40V, 350mA Step-Down Regulator with 2.5µA Quiescent Current and I
LT3970EDDB#TRPBF	Linear	获取价格	LT3970 Series - 40V, 350mA Step-Down Regulator with 2.5µA Quiescent Current and I
LT3970EDDB-3.3#PBF	Linear	获取价格	LT3970 Series - 40V, 350mA Step-Down Regulator with 2.5µA Quiescent Current and I
LT3970EDDB-3.3#TRMPBF	Linear	获取价格	LT3970 Series - 40V, 350mA Step-Down Regulator with 2.5µA Quiescent Current and I
LT3970EDDB-3.3#TRPBF	Linear	获取价格	LT3970 Series - 40V, 350mA Step-Down Regulator with 2.5µA Quiescent Current and I
LT3970EDDB-3.3-PBF	Linear	获取价格	40V, 350mA Step-Down Regulator with 2.5μA Qui

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