Datasheet > FSP3129

FSP3129

更新时间： 2024-11-02 07:00:19

品牌	Logo	应用领域
FOSLINK		转换器输入元件
页数	文件大小	规格书
10页	368K
描述
WIDE INPUT 2A STEP-DOWN CONVERTER

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中文翻译

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数据手册

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FSP3129 数据手册

WIDE INPUT 2A STEP-DOWN CONVERTER

FSP3129

FEATURES

GENERAL DESCRIPTION

2A Output Current

The FSP3129 is a current-mode step-down DC/DC

converter that generates up to 2A output current at

400kHz switching frequency. The device can

operate with input voltage up to 30V.

Up to 95% Efficiency

Up to 30V Input Range

6µA Shutdown Supply Current

400kHz Switching Frequency

Adjustable Output Voltage

Cycle-by-Cycle Current Limit Protection

Thermal Shutdown Protection

Frequency Fold Back at Short Circuit

Stability with Wide Range of Capacitors,

Including Low ESR Ceramic Capacitors

SOP8L Package

Consuming only 6µA in shutdown mode, the

FSP3129 is highly efficient with peak efficiency at

95% when in operation. Protection features include

cycle-by-cycle current limit, thermal shutdown, and

frequency fold back at short circuit.

The FSP3129 is available in SOP8L package and

requires very few external devices for operation.

TYPICAL APPLICATION

TFT LCD Monitors or Televisions and HDTV

Portable DVD Players

Car-Powered or Battery-Powered Equipment

Set-Top Boxes

Telecom Power Supplies

DSL and Cable Modems and Routers

PIN ASSIGNMENT

(Top View)

N/C

COMP

PIN DESCRIPTION

Pin Number Pin Name

Pin Description

Bootstrap. This pin acts as the positive rail for the high-side switch’s gate driver.

Connect a 10nF between this pin and SW.

Input Supply. Bypass this pin to G with a low ESR capacitor. See Input Capacitor in

Application Information section.

Switch Output. Connect this pin to the switching end of the inductor.

Ground.

Feedback Input. The voltage at this pin is regulated to 1.222V. Connect to the resistor

divider between the output and ground to set output voltage.

COMP Compensation Pin. See Compensation Technique in Application information section.

Enable Input. Drive higher than 1.3V or unconnected to enable the IC. Drive lower than

0.7V to disable the IC. The IC is in 6µA low current shutdown mode and the output is

discharged through the Low-Side Power Switch. This pin has a small internal pull up

current to a high level voltage when pin is not connected.

N/C

Not Connected.

2007-1-4

1/10

12 3 4 5 6 7...10

中文翻译

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