Datasheet > SN0405032DRP

SN0405032DRP

更新时间： 2024-10-15 21:05:11

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SN0405032DRP

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SN0405032DRP 技术参数

生命周期：	Obsolete	Reach Compliance Code：	unknown
风险等级：	5.84	Base Number Matches：	1

SN0405032DRP 数据手册

SN0405032

www.ti.com

SLUS626A–NOVEMBER 2004–REVISED FEBRUARY 2005

6-PIN NON-SYNCHRONOUS BUCK CONVERTER

APPLICATIONS

FEATURES

•

Disk Drives

Set Top Box

•

Input Voltage Range 4 V_DCto 7 V_DC

Reference 0.8 V ±1%

•

Current Mode Control with Internal Slope

Compensation

DESCRIPTION

The SN0405032 is a fixed-frequency, current-mode,

non-synchronous buck converter optimized for appli-

cations powered by a 4.5 V to 7 V distributed source.

With internally determined operating frequency,

soft-start time, and control loop compensation, the

SN0405032 provides many features with a minimum

of external components.

•

Internal Loop Compensation

0 A to 1.5 A Current Capability

Short Circuit Protection

Efficiency > 70% @100 mA to 1.5-A Load

Internal 250 mΩ N-Channel MOSFET Switch

Internal Soft-Start

The SN0405032 operates at 1.25 MHz at output

loads up to 1.5 A for output voltages as low as 0.8 V.

The SN0405032 utilizes pulse-by-pulse current limit

as well as frequency foldback to protect the converter

during a catastrophic short circuited output condition.

Switching Frequency 1.25 MHz

Thermal Shutdown

SIMPLIFIED APPLICATION DIAGRAM

TYPICAL EFFICIENCY

100

= 5 V

BOOST AVIN PVIN

SN0405032

OUT

= 3.3 V

FB GND SW

OUT

= 1.25 V

UDG−04135

0.2

0.4

0.6

0.8

1.0

1.2

1.4

1.6

− Load Current − A

LOAD

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas

Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.

12 3 4 5 6 7...18

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