Datasheet > LM25005MH/NOPB

LM25005MH/NOPB

更新时间： 2023-09-03 20:27:56

品牌	Logo	应用领域
德州仪器 - TI		稳压器
页数	文件大小	规格书
29页	1099K
描述
7V 至 42V 宽输入电压、2.5A 电流模式非同步降压稳压器 \| PWP \| 20 \| -40 to 125

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LM25005MH/NOPB 数据手册

LM25005

www.ti.com

SNVS411C –JANUARY 2006–REVISED MARCH 2013

LM25005 42V, 2.5A Step-Down Switching Regulator

Check for Samples: LM25005

FEATURES

DESCRIPTION

The LM25005 switching regulator features all of the

functions necessary to implement an efficient, high

voltage buck regulator using a minimum of external

components. This easy to use regulator includes a

42V, 160mΩ, N-channel MOSFET, with an output

current capability of 2.5 Amps. The regulator control

method is based upon current mode control utilizing

an emulated current ramp. Current mode control

provides inherent line voltage feed-forward, cycle-by-

cycle current limiting and ease of loop compensation.

The use of an emulated control ramp reduces noise

sensitivity of the pulse-width modulation circuit,

allowing reliable control of very small duty cycles

necessary in high input voltage applications. The

operating frequency is programmable from 50kHz to

500kHz. An oscillator synchronization pin allows

multiple LM25005 regulators to self-synchronize or to

be synchronized to an external clock. Additional

protection features include: current limit, thermal

shutdown and remote shutdown capability. The

device is available in a power enhanced HTSSOP

package featuring an exposed die attach pad to aid

thermal dissipation.

•

Integrated 42V, 160mΩ N-Channel MOSFET

Ultra-Wide Input Voltage Range from 7V to 42V

Internal Bias Regulator

Adjustable Output Voltage from 1.225V

1.5% Feedback Reference Accuracy

Current Mode Control with Emulated Inductor

Current Ramp

•

Single Resistor Oscillator Frequency Setting

Oscillator Synchronization Input

Programmable Soft-Start

Shutdown / Standby Input

Wide Bandwidth Error Amplifier

Thermal Shutdown

Package

•

HTSSOP (Exposed Pad)

Simplified Application Schematic

V_IN

BST

LM25005

V_OUT

SYNC

COMP

GND

OUT

RAMP RT SS

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.

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