Datasheet > LM34910

LM34910

更新时间： 2024-11-09 11:12:07

品牌	Logo	应用领域
德州仪器 - TI		稳压器
页数	文件大小	规格书
20页	563K
描述
8V 至 36V、1.25A 恒定导通时间非同步降压稳压器

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LM34910 数据手册

LM34910

www.ti.com

SNVS297B –OCTOBER 2004–REVISED MARCH 2013

LM34910 High Voltage (40V, 1.25A) Step Down Switching Regulator

Check for Samples: LM34910

FEATURES

DESCRIPTION

The LM34910 Step Down Switching Regulator

features all of the functions needed to implement a

low cost, efficient, buck bias regulator capable of

supplying 1.25A to the load. This buck regulator

contains a 40V N-Channel Buck Switch, and is

available in the thermally enhanced WSON-10

package. The hysteretic regulation scheme requires

no loop compensation, results in fast load transient

response, and simplifies circuit implementation. The

operating frequency remains constant with line and

load variations due to the inverse relationship

between the input voltage and the on-time. The

current limit detection is set at 1.25A. Additional

features include: VCC under-voltage lockout, thermal

shutdown, gate drive under-voltage lockout, and

maximum duty cycle limiter.

•

Integrated 40V, N-Channel Buck Switch

Integrated Start-Up Regulator

Input Voltage Range: 8V to 36V

No Loop Compensation Required

Ultra-Fast Transient Response

Operating Frequency Remains Constant with

Load Current and Input Voltage

•

Maximum Duty Cycle Limited During Start-Up

Adjustable Output Voltage

Valley Current Limit At 1.25A

Precision Internal Reference

Low Bias Current

Highly Efficient Operation

Thermal Shutdown

Package

•

WSON-10 (4 mm x 4 mm)

Exposed Thermal Pad For Improved Heat

Dissipation

TYPICAL APPLICATIONS

•

High Efficiency Point-Of-Load (POL) Regulator

Non-Isolated Telecommunication Buck

Regulator

•

Secondary High Voltage Post Regulator

Connection Diagram

BST

I_SEN

V_IN

V_CC

R_ON/SD

S_GND

RTN

Figure 1. 10-Lead WSON

See DPR0010A Package

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...20

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与LM34910相关器件

型号	品牌	获取价格	描述	数据表
LM34910C	TI	获取价格	High Voltage (50V, 1.25A) Step Down Switching Regulator
LM34910C	NSC	获取价格	High Voltage (50V, 1.25A) Step Down Switching Regulator
LM34910C_15	TI	获取价格	High Voltage (50V, 1.25A) Step Down Switching Regulator
LM34910CSD	NSC	获取价格	High Voltage (50V, 1.25A) Step Down Switching Regulator
LM34910CSD/NOPB	NSC	获取价格	IC 1.25 A SWITCHING REGULATOR, PDSO10, 4 X 4 MM, PLASTIC, ROHS COMPLIANT, LLP-10, Switchin
LM34910CSD/NOPB	TI	获取价格	High Voltage (50V, 1.25A) Step Down Switching Regulator
LM34910CSDE	NSC	获取价格	High Voltage (50V, 1.25A) Step Down Switching Regulator
LM34910CSDE/NOPB	TI	获取价格	High Voltage (50V, 1.25A) Step Down Switching Regulator
LM34910CSDX	NSC	获取价格	High Voltage (50V, 1.25A) Step Down Switching Regulator
LM34910CSDX/NOPB	TI	获取价格	High Voltage (50V, 1.25A) Step Down Switching Regulator

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