Datasheet > LM27341_15

LM27341_15

更新时间： 2024-09-16 00:49:15

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描述
LM27341/LM27342/LM27341-Q1/LM27342-Q1 2 MHz 1.5A/2A Wide Input Range Step-Down DC-DC Regulator with Frequency Synchronization

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LM27341_15 数据手册

LM27341, LM27342, LM27341-Q1, LM27342-Q1

www.ti.com

SNVS497E –NOVEMBER 2008–REVISED APRIL 2013

LM27341/LM27342/LM27341-Q1/LM27342-Q1 2 MHz 1.5A/2A Wide Input Range Step-Down

DC-DC Regulator with Frequency Synchronization

Check for Samples: LM27341, LM27342, LM27341-Q1, LM27342-Q1

FEATURES

DESCRIPTION

The LM27341 and LM27342 regulators are

monolithic, high frequency, PWM step-down DC-DC

converters in 10-pin SON and 10-pin MSOP-

PowerPad packages. They contain all the active

functions to provide local DC-DC conversion with fast

transient response and accurate regulation in the

smallest possible PCB area.

•

Space Saving 3 x 3 mm 10-Pin SON and

MSOP-PowerPad Packages

•

Wide Input Voltage Range: 3V to 20V

Wide Output Voltage Range: 1V to 18V

LM27341 Delivers 1.5A Maximum Output

Current

With

minimum of external components the

•

LM27342 Delivers 2A Maximum Output Current

High Switching Frequency: 2 MHz

LM27341 and LM27342 are easy to use. The ability

to drive 1.5A or 2A loads respectively, with an internal

150 mΩ NMOS switch results in the best power

density available. The world-class control circuitry

allows for on-times as low as 65 ns, thus supporting

exceptionally high frequency conversion. Switching

Frequency Synchronization: 1.00 MHz < f_SW

2.35 MHz

•

150 mΩ NMOS Switch with Internal Bootstrap

Supply

frequency is internally set to

MHz and

•

70 nA Shutdown Current

synchronizable from 1 to 2.35 MHz, which allows the

use of extremely small surface mount inductors and

chip capacitors. Even though the operating frequency

is very high, efficiencies up to 90% are easy to

achieve. External shutdown is included featuring an

ultra-low shutdown current of 70 nA. The LM27341

and LM27342 utilize peak current-mode control and

internal compensation to provide high-performance

regulation over a wide range of operating conditions.

Additional features include internal soft-start circuitry

to reduce inrush current, pulse-by-pulse current limit,

Internal Voltage Reference Accuracy of 1%

Peak Current-Mode, PWM Operation

Thermal Shutdown

LM27341-Q1 and LM27342-Q1 are AEC-Q100

Grade 1 Qualified and are Manufactured on an

Automotive Grade Flow

APPLICATIONS

•

Local 12V to Vcore Step-Down Converters

Radio Power Supply

Core Power in HDDs

Set-Top Boxes

thermal

protection.

shutdown,

and

output

over-voltage

Automotive

USB Powered Devices

DSL Modems

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.

All trademarks are the property of their respective owners.

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...44

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与LM27341_15相关器件

型号	品牌	获取价格	描述	数据表
LM27341MY	NSC	获取价格	2 MHz 1.5A/2A Wide Input Range Step-Down DC-DC Regulator with Frequency Synchronization
LM27341MY/NOPB	TI	获取价格	LM27341/LM27342/LM27341-Q1/LM27342-Q1 2 MHz 1.5A/2A Wide Input Range Step-Down DC-DC Regul
LM27341MYX	NSC	获取价格	2 MHz 1.5A/2A Wide Input Range Step-Down DC-DC Regulator with Frequency Synchronization
LM27341MYX/NOPB	TI	获取价格	1.5A - Wide Input Range Buck Regulator with Frequency Synchronization 10-MSOP-PowerPAD -40
LM27341-Q1	TI	获取价格	LM27341/LM27342/LM27341-Q1/LM27342-Q1 2 MHz 1.5A/2A Wide Input Range Step-Down DC-DC Regul
LM27341QMY	NSC	获取价格	2 MHz 1.5A/2A Wide Input Range Step-Down DC-DC Regulator with Frequency Synchronization
LM27341QMY/NOPB	TI	获取价格	LM27341/LM27342/LM27341-Q1/LM27342-Q1 2 MHz 1.5A/2A Wide Input Range Step-Down DC-DC Regul
LM27341QMYX	NSC	获取价格	2 MHz 1.5A/2A Wide Input Range Step-Down DC-DC Regulator with Frequency Synchronization
LM27341QMYX/NOPB	TI	获取价格	LM27341/LM27342/LM27341-Q1/LM27342-Q1 2 MHz 1.5A/2A Wide Input Range Step-Down DC-DC Regul
LM27341SD	NSC	获取价格	2 MHz 1.5A/2A Wide Input Range Step-Down DC-DC Regulator with Frequency Synchronization

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