Datasheet > LM5019_15

LM5019_15

更新时间： 2024-09-27 01:04:51

品牌	Logo	应用领域
德州仪器 - TI		/
页数	文件大小	规格书
30页	1410K
描述
100-V, 100-mA Constant On-Time Synchronous Buck Regulator

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LM5019

SNVS788F –JANUARY 2012–REVISED DECEMBER 2014

LM5019 100-V, 100-mA Constant On-Time Synchronous Buck Regulator

1 Features

3 Description

The LM5019 is a 100-V, 100-mA synchronous step-

down regulator with integrated high-side and low-side

MOSFETs. The constant-on-time (COT) control

scheme employed in the LM5019 requires no loop

compensation, provides excellent transient response,

and enables very low step-down ratios. The on-time

varies inversely with the input voltage resulting in

nearly constant frequency over the input voltage

range. A high-voltage startup regulator provides bias

power for internal operation of the IC and for

integrated gate drivers.

•

Wide 7.5-V to 100-V Input Range

•

Integrated 100-mA High-Side and Low-Side

Switches

•

No Schottky Required

Constant On-Time Control

No Loop Compensation Required

Ultra-Fast Transient Response

Nearly Constant Operating Frequency

Intelligent Peak Current Limit

Adjustable Output Voltage from 1.225 V

Precision 2% Feedback Reference

Frequency Adjustable to 1 MHz

Adjustable Undervoltage Lockout

Remote Shutdown

A peak current limit circuit protects against overload

conditions. The undervoltage lockout (UVLO) circuit

allows the input undervoltage threshold and

hysteresis to be independently programmed. Other

protection features include thermal shutdown and

bias supply undervoltage lockout.

The LM5019 device is available in WSON-8 and SO

PowerPAD-8 plastic packages.

Thermal Shutdown

Packages:

Device Information⁽¹⁾

–

8-Pin WSON

8-Pin SO PowerPAD

PART NUMBER

LM5019

PACKAGE

SO PowerPAD (8)

WSON (8)

BODY SIZE (NOM)

4.89 mm x 3.90 mm

4.00 mm x 4.00 mm

2 Applications

•

Smart Power Meters

(1) For all available packages, see the orderable addendum at

the end of the data sheet.

Telecommunication Systems

Automotive Electronics

Isolated Bias Supply

Typical Application

LM5019

7.5V-100V

VIN

BST

VOUT

BST

RON

UV2

VCC

FB2

UVLO

UV1

RTN

FB1

An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,

intellectual property matters and other important disclaimers. PRODUCTION DATA.

12 3 4 5 6 7...30

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与LM5019_15相关器件

型号	品牌	获取价格	描述	数据表
LM5019MR/NOPB	TI	获取价格	100-V, 100-mA Constant On-Time Synchronous Buck Regulator
LM5019MRX/NOPB	TI	获取价格	100-V, 100-mA Constant On-Time Synchronous Buck Regulator
LM5019SD/NOPB	TI	获取价格	100-V, 100-mA Constant On-Time Synchronous Buck Regulator
LM5019SDX/NOPB	TI	获取价格	100-V, 100-mA Constant On-Time Synchronous Buck Regulator
LM5020	TI	获取价格	LM5020 100V Current Mode PWM Controller
LM5020	NSC	获取价格	100V Current Mode PWM Controller
LM5020_06	NSC	获取价格	100V Current Mode PWM Controller
LM5020_14	TI	获取价格	100V Current Mode PWM Controller
LM5020MM-1	NSC	获取价格	100V Current Mode PWM Controller
LM5020MM-1	TI	获取价格	LM5020 100V Current Mode PWM Controller

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