Datasheet > LTC3528

LTC3528

更新时间： 2023-12-20 18:46:14

品牌	Logo	应用领域
亚德诺 - ADI		转换器
页数	文件大小	规格书
18页	331K
描述
采用 3mm x 2mm DFN 封装的 1A、1MHz 同步升压型 DC/DC 转换器

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LTC3528 数据手册

LTC3528/LTC3528B

1A, 1MHz Synchronous

Step-Up DC/DC Converters

in 3mm × 2mm DFN

FEATURES

DESCRIPTION

TheLTC^®3528/LTC3528Baresynchronous,ﬁxedfrequency

step-up DC/DC converters with output disconnect. High

efﬁciencysynchronousrectiﬁcation,inadditiontoa700mV

start-up voltage and operation down to 500mV once

started, provides longer run time for single or multiple

cell battery-powered products.

■

Delivers 3.3V at 200mA from a Single Alkaline/

NiMH Cell or 3.3V at 400mA from Two Cells

■

V Start-Up Voltage: 700mV

■

1.6V to 5.25V V

Range

OUT

■

Up to 94% Efﬁciency

Output Disconnect

1MHz Fixed Frequency Operation

A switching frequency of 1MHz minimizes solution

footprint by allowing the use of tiny, low proﬁle induc-

tors and ceramic capacitors. The current mode PWM is

internally compensated, simplifying the design process.

The LTC3528 enters Burst Mode operation at light loads,

while the LTC3528B features continuous switching at light

loads. Anti-ringing circuitry reduces EMI by damping the

inductorindiscontinuousmode.Additionalfeaturesinclude

a low shutdown current, open-drain power good output,

short-circuit protection and thermal overload protection.

V > V

Operation

OUT

Integrated Soft-Start

Current Mode Control with Internal Compensation

Burst Mode^®Operation with 12µA Quiescent Current

(LTC3528)

■

Low Noise PWM Operation (LTC3528B)

Internal Synchronous Rectiﬁer

Logic Controlled Shutdown: <1µA

Anti-Ringing Control

Low Proﬁle (3mm × 2mm × 0.75mm) DFN Package

The LTC3528/LTC3528B are offered in an 8-lead 3mm ×

2mm × 0.75mm DFN package.

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

trademarks and ThinSOT is a trademark of Linear Technology Corporation. All other trademarks

are the property of their respective owners.

APPLICATIONS

■

Medical Instruments

■

Flash-Based MP3 Players

■

Noise Canceling Headphones

Wireless Mice

Bluetooth Headsets

■

TYPICAL APPLICATION

Efﬁciency and Power Loss

100

1000

100

= 3.3V

OUT

4.7µH

= 2.4V

OUT

EFFICIENCY

3.3V

OUT

1.8V TO 3.2V

400mA

499k

287k

33pF

4.7µF

LTC3528

PGOOD

10µF

POWER LOSS

SHDN

OFF ON

GND

0.1

3528 TA01a

0.01

1000

0.1

0.01

100

LOAD CURRENT (mA)

3528 TA01b

3528fd

12 3 4 5 6 7...18

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LTC3528_15	Linear	1A, 1MHz Synchronous Step-Up DC/DC Converters	获取价格
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LTC3528-2	ADI	采用 2mm x 3mm DFN 封装的 1A、2MHz 同步升压型 DC/DC 转换器	获取价格
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LTC3528B_15	Linear	1A, 1MHz Synchronous Step-Up DC/DC Converters	获取价格
LTC3528B-2	Linear	1A, 2MHz Synchronous Step-Up DC/DC Converter	获取价格