LM25011Q

更新时间： 2024-09-17 12:09:43

品牌	Logo	应用领域
德州仪器 - TI		开关
页数	文件大小	规格书
27页	1082K
描述
42V 2A Constant On-Time Switching Regulator With Adjustable Current Limit

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LM25011Q 数据手册

LM25011, LM25011-Q1

www.ti.com

SNVS617G –APRIL 2009–REVISED FEBRUARY 2013

LM25011, LM25011Q, LM25011A, LM25011AQ

42V 2A Constant On-Time Switching Regulator With Adjustable Current Limit

Check for Samples: LM25011, LM25011-Q1

FEATURES

•

Thermal Shutdown

Precision 2% Feedback Reference

Package: 10-Pin, VSSOP

•

LM25011Q is an Automotive Grade Product

that is AEC-Q100 Grade 1 Qualified (-40°C to

+125°C Operating Junction Temperature)

DESCRIPTION

•

LM25011A Allows Low Dropout Operation at

High Switching Frequency

The LM25011 Constant On-time Step-Down

Switching Regulator features all the functions needed

to implement a low cost, efficient, buck bias regulator

capable of supplying up to 2A of load current. This

high voltage regulator contains an N-Channel Buck

switch, a startup regulator, current limit detection, and

internal ripple control. The constant on-time

regulation principle requires no loop compensation,

results in fast load transient response, and simplifies

circuit implementation. The operating frequency

remains constant with line and load. The adjustable

valley current limit detection results in a smooth

transition from constant voltage to constant current

mode when current limit is reached, without the use

of current limit foldback. The PGD output indicates

the output voltage has increased to within 5% of the

expected regulation value. Additional features

include: Low output ripple, VIN under-voltage lock-

out, adjustable soft-start timing, thermal shutdown,

gate drive pre-charge, gate drive under-voltage lock-

out, and maximum duty cycle limit.

•

Input Operating Voltage Range: 6V to 42V

Absolute Maximum Input Rating: 45V

Integrated 2A N-Channel Buck Switch

Adjustable Current Limit Allows for Smaller

Inductor

•

Adjustable Output Voltage from 2.51V

Minimum Ripple Voltage at V_OUT

Power Good Output

Switching Frequency Adjustable to 2 MHz

COT Topology Features:

–

Switching Frequency Remains Nearly

Constant with Load Current and Input

Voltage Variations

–

Ultra-Fast Transient Response

No Loop Compensation Required

Stable Operation with Ceramic Output

Capacitors

The LM25011A has a shorter minimum off-time than

the LM25011, which allows for higher frequency

operation at low input voltages.

–

Allows for Smaller Output Capacitor and

Current Sense Resistor

•

Adjustable Soft-Start Timing

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...27

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与LM25011Q相关器件

型号	品牌	获取价格	描述	数据表
LM25011-Q1	TI	获取价格	42V 2A Constant On-Time Switching Regulator With Adjustable Current Limit
LM25011Q1MY	TI	获取价格	42V 2A Constant On-Time Switching Regulator With Adjustable Current Limit
LM25011Q1MY/NOPB	TI	获取价格	LM25011, LM25011-Q1, LM25011A, LM25011A-Q1 42-V 2-A Constant On-Time Switching Regulator W
LM25011Q1MYX	TI	获取价格	42V 2A Constant On-Time Switching Regulator With Adjustable Current Limit
LM25011Q1MYX/NOPB	TI	获取价格	Automotive 6-42V Wide Vin, 2A Constant-On Time Non-Synchronous Buck Regulator w/ Adj Curre
LM25017	TI	获取价格	48V, 650mA Constant On-Time Synchronous Buck Regulator
LM25017MR/NOPB	TI	获取价格	48V, 650mA Constant On-Time Synchronous Buck Regulator
LM25017MRE/NOPB	TI	获取价格	48V, 650mA Constant On-Time Synchronous Buck Regulator
LM25017MRX/NOPB	TI	获取价格	48V, 650mA Constant On-Time Synchronous Buck Regulator
LM25017SD/NOPB	TI	获取价格	7.5-48V Wide Vin, 650mA Constant On-Time Synchronous Buck Regulator 8-WSON -40 to 125

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