LT3971

更新时间： 2024-11-23 05:43:35

品牌	Logo	应用领域
凌特 - Linear		稳压器
页数	文件大小	规格书
24页	306K
描述
38V, 1.2A, 2MHz Step-Down Regulator with 2.8 Quiescent Current

阅读下载

中文翻译

获取价格

数据手册

如果您发现信息不准确，欢迎纠错

LT3971 数据手册

LT3971

38V, 1.2A, 2MHz

Step-Down Regulator with

2.8µA Quiescent Current

FEATURES

DESCRIPTION

The LT^®3971 is an adjustable frequency monolithic buck

switchingregulatorthatacceptsawideinputvoltagerange

up to 38V. Low quiescent current design consumes only

2.8μAofsupplycurrentwhileregulatingwithnoload. Low

ripple Burst Mode operation maintains high efﬁciency at

low output currents while keeping the output ripple below

15mV in a typical application. An internally compensated

current mode topology is used for fast transient response

and good loop stability. A high efﬁciency 0.33Ω switch

is included on the die along with a boost Schottky diode

and the necessary oscillator, control and logic circuitry.

An accurate 1V threshold enable pin can be used to shut

down the LT3971, reducing the input supply current to

700nA. A capacitor on the SS pin provides a controlled

inrush current (soft-start). A power good ﬂag signals

Ultralow Quiescent Current:

2.8μA I Regulating 12V to 3.3V

OUT

Low Ripple Burst Mode^®Operation:

Output Ripple < 15mV

P-P

Wide Input Voltage Range: 4.3V to 38V

1.2A Maximum Output Current

Adjustable Switching Frequency: 200kHz to 2MHz

Synchronizable Between 250kHz to 2MHz

Fast Transient Response

Accurate 1V Enable Pin Threshold

Low Shutdown Current: I = 700nA

Power Good Flag

Soft-Start Capability

Internal Compensation

Saturating Switch Design: 0.33ꢀ On-Resistance

Output Voltage: 1.19V to 30V

Small Thermally Enhanced 10-Pin MSOP Package

and (3mm × 3mm) DFN Packages

when V

reaches 91% of the programmed output volt-

OUT

age. The LT3971 is available in small 10-pin MSOP and

3mm × 3mm DFN packages with exposed pads for low

thermal resistance.

APPLICATIONS

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

of Linear Technology Corporation. All other trademarks are the property of their respective

owners.

Automotive Battery Regulation

Power for Portable Products

Industrial Supplies

TYPICAL APPLICATION

3.3V Step Down Converter

No Load Supply Current

4.0

4.5V TO 38V

3.5

BOOST

OFF ON

0.47μF

4.7μH

10pF

OUT

3.0

3.3V

1.2A

2.5

LT3971

4.7μF

2.0

1.5

1.78M

49.9k

SYNC GND

22μF

1.0

3480 TA01

INPUT VOLTAGE (V)

3971 TA01b

3971f

12 3 4 5 6 7...24

中文翻译

下载PDF

与LT3971相关器件

型号	品牌	获取价格	描述	数据表
LT3971_15	Linear	获取价格	38V, 1.2A, 2MHz Step-Down Regulator with 2.8A Quiescent Current
LT3971-3.3	Linear	获取价格	38V, 1.2A, 2MHz Step-Down Regulator with 2.8A Quiescent Current
LT3971-3.3_15	Linear	获取价格	38V, 1.2A, 2MHz Step-Down Regulator with 2.8A Quiescent Current
LT3971-5_15	Linear	获取价格	38V, 1.2A, 2MHz Step-Down Regulator with 2.8A Quiescent Current
LT3971-5IMSE#PBF	Linear	获取价格	IC 3 A SWITCHING REGULATOR, 2400 kHz SWITCHING FREQ-MAX, PDSO10, LEAD FREE, PLASTIC, MSOP-
LT3971-5IMSE#TRPBF	Linear	获取价格	IC 3 A SWITCHING REGULATOR, 2400 kHz SWITCHING FREQ-MAX, PDSO10, LEAD FREE, PLASTIC, MSOP-
LT3971A	Linear	获取价格	38V, 1.3A, 2MHz Step-Down Regulator with 2.2Î
LT3971A	ADI	获取价格	具 2.2μA 静态电流的 38V、1.3A、2MHz 降压型稳压器
LT3971A_15	Linear	获取价格	38V, 1.3A, 2MHz Step-Down Regulator with 2.2A Quiescent Current
LT3971A-5	Linear	获取价格	38V, 1.3A, 2MHz Step-Down Regulator with 2.2Î

与LT3971相关文章

解析光耦仿真器：升级光耦合器技术的必要性
2024-11-18

36
英伟达新一代Blackwell GPU过热问题致交付延迟
2024-11-18

28
国产厂商思特威CMOS图像传感器芯片单月出货超1亿颗，技术创新引领行业发展
2024-11-14

56
台积电5nm和3nm产能利用率达100%，半导体行业景气度持续攀升
2024-11-14

53

产品中心

服务支持

精选活动

关于我们

帮助中心

LT3971

LT3971 数据手册

与LT3971相关器件

与LT3971相关文章

您还可以找

产品中心

服务支持

精选活动

关于我们

帮助中心

LT3971

LT3971 数据手册

与LT3971相关器件

与LT3971相关文章

您还可以找

您在本页遇到什么问题？