Datasheet > LM5088QMHX-2

LM5088QMHX-2

更新时间： 2024-11-16 00:57:39

品牌	Logo	应用领域
德州仪器 - TI		/
页数	文件大小	规格书
36页	1272K
描述
LM5088, LM5088-Q1 Wide Input Range Non-Synchronous Buck Controller

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LM5088QMHX-2 数据手册

LM5088, LM5088-Q1

www.ti.com

SNVS600H –DECEMBER 2008–REVISED MARCH 2013

LM5088, LM5088-Q1 Wide Input Range Non-Synchronous Buck Controller

Check for Samples: LM5088, LM5088-Q1

FEATURES

DESCRIPTION

The LM5088 high voltage non-synchronous buck

•

LM5088-Q1 is an Automotive Grade Product

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

+125°C Operating Junction Temperature)

controller features all the necessary functions to

implement an efficient high voltage buck converter

using a minimum number of external components.

The LM5088 can be configured to operate over an

ultra-wide input voltage range of 4.5V to 75V. This

easy to use controller includes a level shifted gate

driver capable of controlling an external N-channel

buck switch. The control method is based upon peak

current mode control utilizing an emulated current

ramp. 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/low output voltage

applications. The LM5088 switching frequency is

programmable from 50 kHz to 1 MHz.

•

Emulated Current Mode Control

Drives External High-Side N-channel MOSFET

Ultra-Wide Input Voltage Range from 4.5V to

75V

•

Low I_QShutdown and Standby Modes

High Duty Cycle Ratio Feature for Reduced

Dropout Voltage

•

Spread Spectrum EMI Reduction (LM5088-1)

Hiccup Timer for Overload Protection

(LM5088-2)

•

Adjustable Output Voltage from 1.205V with

1.5% Feedback Reference Accuracy

The LM5088 is available in two versions: The

LM5088-1 provides a +/-5% frequency dithering

function to reduce the conducted and radiated EMI,

while the LM5088-2 provides a versatile restart timer

for overload protection. Additional features include a

low dropout bias regulator, tri-level enable input to

control shutdown and standby modes, soft-start and

oscillator synchronization capability. The device is

available in a thermally enhanced HTSSOP-16 pin

package.

•

Wide Bandwidth Error Amplifier

Single Resistor Oscillator Frequency Setting

Oscillator Synchronization Capability

Programmable Soft-Start

High Voltage, Low Dropout Bias Regulator

Thermal Shutdown Protection

PACKAGE

•

HTSSOP-16

Simplified Application Schematic

VIN (4.5V-75V)

R_UV2

VIN

C_BOOT

BOOT

C_IN

R_UV1

VOUT

DITH/RES

C_{DITHER/RESTART}

R_FB2

R_FB1

C_OUT1

C_OUT2

VCC

LM5088

R_RAMP

C_RAMP

C_SS

C_VCC

CSG

OUT

RAMP

RT/SYNC

R_RT

C_COMP

R_COMP

GND

COMP

C_HF

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...36

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与LM5088QMHX-2相关器件

型号	品牌	获取价格	描述	数据表
LM5088QMHX-2/NOPB	TI	获取价格	Wide Input Range Non-Synchronous Buck Controller
LM50B	NSC	获取价格	SOT-23 Single-Supply Centigrade Temperature Sensor
LM50BIM3	TI	获取价格	LM50/LM50-Q1 SOT-23 Single-Supply Centigrade Temperature Sensor
LM50BIM3	NSC	获取价格	SOT-23 Single-Supply Centigrade Temperature Sensor
LM50BIM3/NOPB	TI	获取价格	±2°C analog output temperature sensor, with 10mV/°C gain 3-SOT-
LM50BIM3/NOPB	NSC	获取价格	Analog Temperature Sensor, ANALOG TEMP SENSOR-VOLTAGE, 0.1-1.75V, 3Cel, RECTANGULAR, SURFA
LM50BIM3NOPB	TI	获取价格	LM50/LM50-Q1 SOT-23 Single-Supply Centigrade Temperature Sensor
LM50BIM3X	TI	获取价格	LM50/LM50-Q1 SOT-23 Single-Supply Centigrade Temperature Sensor
LM50BIM3X	NSC	获取价格	SOT-23 Single-Supply Centigrade Temperature Sensor
LM50BIM3X/NOPB	NSC	获取价格	Analog Temperature Sensor, ANALOG TEMP SENSOR-VOLTAGE, 0.1-1.75V, 3Cel, RECTANGULAR, SURFA

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