Datasheet > LTC3529_15

LTC3529_15

更新时间： 2022-02-26 13:14:09

品牌	Logo	应用领域
凌特 - Linear		/
页数	文件大小	规格书
12页	216K
描述
1.5A, 1.5MHz Step-Up DC/DC Converter in 2mm 3mm DFN

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LTC3529_15 数据手册

LTC3529

1.5A, 1.5MHz Step-Up

DC/DC Converter in

2mm × 3mm DFN

FEATURES

DESCRIPTION

TheLTC^®3529isa5Voutput,synchronous,ﬁxedfrequency

step-up DC/DC converter optimized for USB On-The-Go

(OTG) hosting applications. This compact USB OTG 5V

Compact Solution for 5V USB On-The-Go

Power

BUS

5V at 500mA from Single Li-Ion Cell

Automatic Fault Detection

converter features a 1.5MHz switching frequency,

BUS

High Efﬁciency: Up to 95%

internal compensation and a tiny 2mm × 3mm DFN pack-

age. The LTC3529 can operate from input voltages as low

as 1.8V.

V Range: 1.8V to 5.25V

Fixed 5V Output

Short-Circuit Protection

USB OTG-speciﬁc features include a fault ﬂag with 22ms

deglitching to indicate when the bus is overloaded, output

disconnect and short-circuit protection. Following a fault,

the LTC3529 can be programmed to either latchoff or

restart after a time-out duration.

1.5MHz Low Noise, Fixed Frequency PWM

Inrush Current Limiting and Internal Soft-Start

Output Disconnect

<1μA Quiescent Current in Shutdown

V > V

Operation

OUT

Additional features include a <1μA shutdown mode,

soft-start, inrush current limiting and thermal overload

protection. Anti-ring circuitry reduces EMI during low

power operation. The LTC3529 is offered in an 8-lead

2mm × 3mm × 0.75mm DFN package.

8-Lead, 2mm × 3mm DFN Package

APPLICATIONS

Personal Media Players

Digital Video Cameras

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

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

Protected by U.S. Patents including 6404251, 6166527.

Digital Multimedia Broadcast Tuners

Digital Cameras

Smart Phones

TYPICAL APPLICATION

Li-Ion Battery to 5V Synchronous Boost Converter

Efﬁciency vs Load Current

100

0.9

0.8

0.7

0.6

0.5

0.4

0.3

0.2

0.1

4.7μH

2.5V

4.2V

Li-Ion

3.3μF

EFFICIENCY

LTC3529

370Ω

FAULT SNSGND

OUT

AUTO-RESTART OFF ON

OFF ON

RST

OUT

500mA

10μF

SHDN

PGND

POWER LOSS

3529 TA01a

100

1000

LOAD CURRENT (mA)

3529 TA01b

= 3.6V

INDUCTOR = 4.7μH,

COOPER BUSSMANN SD25-4R7

3529fb

12 3 4 5 6 7...12

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