Datasheet > FSP3125S33AE

FSP3125S33AE

更新时间： 2024-09-27 07:00:19

品牌	Logo	应用领域
FOSLINK		转换器
页数	文件大小	规格书
9页	273K
描述
150KHZ，2A PWM BUCK DC/DC CONVERTER

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中文翻译

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数据手册

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FSP3125S33AE 数据手册

150KHZ，2A PWM BUCK DC/DC CONVERTER

FSP3125

FEATURES

GENERAL DESCRIPTION

Output voltage: 3.3V, 5V, 12V and adjustable

The FSP3125 series are monolithic IC designed for a

step-down DC/DC converter, and own the ability of

driving a 2A load without additional transistor. It saves

board space. The external shutdown function can be

controlled by logic level and then come into standby

mode. The internal compensation makes feedback

control having good line and load regulation without

external design. Regarding protected function,

thermal shutdown is to prevent over temperature

operating from damage, and current limit is against

over current operating of the output switch. If current

limit function occurs and FB is down below 0.5V, the

switching frequency will be reduced. The FSP3125

series operates at a switching frequency of 150KHz

thus allow smaller sized filter components than what

would be needed with lower frequency switching

regulators. Other features include a guaranteed ± 4%

tolerance on output voltage under specified input

voltage and output load conditions, and ± 15% on the

oscillator frequency. The output version included fixed

3.3V, 5V, 12V, and an adjustable type. The chips are

available in a standard SOP8L package.

output version

Adjustable version output voltage range, 1.23V to

18V ± 4%

150KHz ±15% fixed switching frequency

Voltage mode non-synchronous PWM control

Thermal-shutdown and current-limit protection

ON/OFF shutdown control input

Operating voltage can be up to 22V

Output load current: 2A

SOP8L packages

Low power standby mode

Built-in switching transistor on chip

Typical Application

Simple High-efficiency step-down regulator

On-card switching regulators

Positive to negative converter

PIN ASSIGNMENT

(Top View)

VIN

OUTPUT

GND

FSP3125

GND

PIN DESCRIPTION

Name

VIN

OUTPUT

No.

Description

Operating Voltage Input

Switching Output

Output Voltage Feedback Control

On/Off Shutdown

Ground

GND

2007-3-27

1/9

12 3 4 5 6 7...9

中文翻译

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