Datasheet > LTC3537EUD-TRPBF

LTC3537EUD-TRPBF

更新时间： 2024-11-12 05:43:55

品牌	Logo	应用领域
凌特 - Linear		转换器
页数	文件大小	规格书
20页	296K
描述
2.2 MHz, 600mA Synchronous Step-Up DC/DC Converter and 100mA LDO

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中文翻译

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数据手册

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LTC3537EUD-TRPBF 数据手册

LTC3537

2.2 MHz, 600mA

Synchronous Step-Up DC/DC

Converter and 100mA LDO

FEATURES

DESCRIPTION

TheLTC^®3537combinesahighefﬁciency,2.2MHzstep-up

DC/DC converter with an idependent 100mA low dropout

regulator(LDO).Thestep-upconverterstartsfromaninput

voltage as low as 0.68V and contains an internal 0.4Ω

switch and a 0.6Ω synchronous rectiﬁer that disconnects

from the output when disabled in shutdown.

High Efﬁciency Step-Up DC/DC Converter and LDO

Step-Up

V : 0.68V to 5V, V : 1.5V to 5.25V

OUT

2.2MHz Fixed Frequency Operation

Synchronous Rectiﬁer with Output Disconnect

Burst Mode Operation (Pin Selectable)

OUT

: 100mA at 3.3V, V >0.8V

A switching frequency of 2.2MHz minimizes solution

footprint by allowing the use of tiny, low proﬁle inductors

and ceramic capacitors. The current mode PWM design

is internally compensated, reducing external parts count.

Fixed frequency switching is maintained until a light load

current is sensed, at which point Burst Mode^®operation is

engaged to maximize efﬁciency. For low noise operation,

Burst Mode Operation can be disabled. Anti-ring circuitry

reduces EMI by damping the inductor in discontinuous

mode. Additional features include a low shutdown current

of under 1μA and thermal overload protection.

Linear LDO Regulator

V : 1.8V to 5.5V, V : 0.6V to 5V

OUT

100mV Dropout Voltage at 50mA

24dB Ripple Rejection at f

OUT

: 100mA

Combined

Power Good Indicators

Low-Battery Comparator

30μA I

Low Proﬁle 3mm × 3mm × 0.75mm Package

The integrated LDO regulator provides a very low noise,

programmable low dropout supply.

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

All other trademarks are the property of their respective owners.

APPLICATIONS

Wireless Microphones

Portable Medical instruments

Noise Cancelling/Portable Headsets

RF and Audio Power

TYPICAL APPLICATION

Efﬁciency and Power Loss

vs Load Current

100

1000

100

2.2μH

LTC3537

OUTB

INB

OUTB

665k

3.3V

EFFICIENCY

LBI

LBO

ALKALINE

0.8V

INL

1.74M

4.7μF

1.0M

FBB

PGDB

PGDL

ENLDO

ENBST

MODE

1.6V

OLDO

1μF

POWER LOSS

OFF ON

PWM BURST

2.05M

1μF

FBL

0.1

511k

SGND PGND

, MODE = 1.8V

0.01

0.1

100

1000

3537 TA01a

LOAD CURRENT (mA)

3537 TA01b

3537fa

12 3 4 5 6 7...20

中文翻译

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与LTC3537EUD-TRPBF相关器件

型号	品牌	获取价格	描述	数据表
LTC3538	Linear	获取价格	800mA Synchronous Buck-Boost DC/DC Converter
LTC3538	ADI	获取价格	800mA 同步降压-升压型 DC/DC 转换器
LTC3538EDCB	Linear	获取价格	800mA Synchronous Buck-Boost DC/DC Converter
LTC3538EDCB#PBF	Linear	获取价格	LTC3538 - 800mA Synchronous Buck-Boost DC/DC Converter; Package: DFN; Pins: 8; Temperature
LTC3538EDCB#TR	Linear	获取价格	暂无描述
LTC3538EDCB#TRM	Linear	获取价格	IC 0.8 A SWITCHING REGULATOR, 1200 kHz SWITCHING FREQ-MAX, PDSO8, 2 X 3 MM, PLASTIC, DFN-8
LTC3538EDCB-PBF	Linear	获取价格	800mA Synchronous Buck-Boost DC/DC Converter
LTC3538EDCB-TR	Linear	获取价格	800mA Synchronous Buck-Boost DC/DC Converter
LTC3538EDCB-TRPBF	Linear	获取价格	800mA Synchronous Buck-Boost DC/DC Converter
LTC3539	Linear	获取价格	2A, 1MHz/2MHz Synchronous Step-Up DC/DC Converters

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