Datasheet > LTC3407A

LTC3407A

更新时间： 2023-12-20 18:45:07

品牌	Logo	应用领域
亚德诺 - ADI		稳压器
页数	文件大小	规格书
16页	288K
描述
双输出同步 600mA、1.5MHz 降压型 DC/DC 稳压器

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中文翻译

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LTC3407A 数据手册

LTC3407A

Dual Synchronous 600mA,

1.5MHz Step-Down

DC/DC Regulator

DESCRIPTION

FEATURES

High Efﬁciency: Up to 96%

TheLTC^®3407Aisadual,constantfrequency,synchronous

step-down DC/DC converter. Intended for low power ap-

plications, it operates from a 2.5V to 5.5V input voltage

range and has a constant 1.5MHz switching frequency,

enabling the use of tiny, low cost capacitors and inductors

1mm or less in height. Each output voltage is adjustable

from 0.6V to 5V. Internal synchronous 0.35Ω, 1A power

switches provide high efﬁciency without the need for

external Schottky diodes.

Low Ripple (35mV ) Burst Mode Operation;

1.5MHz Constant Frequency Operation

No Schottky Diodes Required

P-P

I = 40μA

Low R

Internal Switches: 0.35Ω

DS(ON)

Current Mode Operation for Excellent Line

and Load Transient Response

Short-Circuit Protected

Low Dropout Operation: 100% Duty Cycle

Ultralow Shutdown Current: I < 1μA

A user selectable mode input is provided to allow the user

to trade-off ripple noise for low power efﬁciency. Burst

Mode^®operation provides the highest efﬁciency at light

loads, while Pulse Skip Mode provides the lowest ripple

noise at light loads.

Output Voltages from 5V down to 0.6V

Power-On Reset Output

Externally Synchronizable Oscillator

Optional External Soft-Start

Small Thermally Enhanced MSOP and 3mm × 3mm

DFN Packages

To further maximize battery life, the P-channel MOSFETs

are turned on continuously in dropout (100% duty cycle),

and both channels draw a total quiescent current of only

40μA. In shutdown, the device draws <1μA.

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

All other trademarks are the property of their respective owners. Protected by U.S. Patents

including 5481178, 6580258, 6304066, 6127815, 6498466, 6611131.

APPLICATIONS

PDAs/Palmtop PCs

Digital Cameras

Cellular Phones

Wireless and DSL Modems

TYPICAL APPLICATION

1mm High 2.5V/1.8V at 600mA Step-Down Regulators

LTC3407A Efﬁciency/Power Loss Curve

100

V = 2.5V

TO 5.5V

2.5V

1.8V

100k

10μF

0.1

RUN/SS2

RUN/SS1

MODE/SYNC

POR

RESET

LTC3407A

0.01

0.001

0.0001

2.2μH

= 2.5V

= 1.8V

OUT1

OUT2

SW2

SW1

AT 600mA

22pF

887k

22pF

= 3.3V

Burst Mode OPERATION

FB1

FB2

NO LOAD ON OTHER CHANNEL

887k

GND

280k

442k

10μF

100

1000

LOAD CURRENT (mA)

3407A TA02

3407A TA01

3407afa

12 3 4 5 6 7...16

中文翻译

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与LTC3407A相关器件

型号	品牌	获取价格	描述	数据表
LTC3407A-2	Linear	获取价格	Dual Synchronous 800mA,2.25MHz Step-Down DC/DC Regulator
LTC3407A-2	ADI	获取价格	双通道同步、800mA、2.25MHz降压型DC/DC稳压器
LTC3407AB	Linear	获取价格	1.25A, 4MHz, Synchronous Step-Down DC/DC Converter
LTC3407AEDD	Linear	获取价格	暂无描述
LTC3407AEDD#PBF	Linear	获取价格	LTC3407A - Dual Synchronous 600mA, 1.5MHz Step-Down DC/DC Regulator; Package: DFN; Pins: 1
LTC3407AEDD#TR	Linear	获取价格	IC 1.25 A DUAL SWITCHING CONTROLLER, 1800 kHz SWITCHING FREQ-MAX, PDSO10, 3 X 3 MM, PLASTI
LTC3407AEDD#TRPBF	Linear	获取价格	LTC3407A - Dual Synchronous 600mA, 1.5MHz Step-Down DC/DC Regulator; Package: DFN; Pins: 1
LTC3407AEDD-2	Linear	获取价格	Dual Synchronous 800mA,2.25MHz Step-Down DC/DC Regulator
LTC3407AEDD-2#PBF	Linear	获取价格	LTC3407A-2 - Dual Synchronous 800mA, 2.25MHz Step-Down DC/DC Regulator; Package: DFN; Pins
LTC3407AEDD-2#TR	Linear	获取价格	LTC3407A-2 - Dual Synchronous 800mA, 2.25MHz Step-Down DC/DC Regulator; Package: DFN; Pins

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