Datasheet > LM5088-Q1

LM5088-Q1

更新时间： 2024-11-16 00:52:59

品牌	Logo	应用领域
德州仪器 - TI		/
页数	文件大小	规格书
39页	1286K
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Wide Input Range Non-Synchronous Buck Controller

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LM5088, LM5088-Q1

SNVS600I –DECEMBER 2008–REVISED AUGUST 2014

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

1 Features

3 Description

The LM5088 high voltage non-synchronous buck

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 4.5 V to 75 V. 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.

•

LM5088-Q1 is an Automotive Grade Product that

is AEC-Q100 Grade 1 Qualified (-40°C to +125°C

Operating Junction Temperature)

•

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 1.205 V with 1.5%

Feedback Reference Accuracy

•

Wide Bandwidth Error Amplifier

Single Resistor Oscillator Frequency Setting

Oscillator Synchronization Capability

Programmable Soft-Start

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.

High Voltage, Low Dropout Bias Regulator

Thermal Shutdown Protection

Package: HTSSOP (16 Pin)

2 Applications

Device Information⁽¹⁾

•

Automotive Infotainment

PART NUMBER

LM5088

LM5088-Q1

PACKAGE

HTSSOP (16)

BODY SIZE (NOM)

5.00 mm × 4.00 mm

Automotive USB Accessory Adapters

Industrial DC-DC Bias and Motor Drivers

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

the end of the datasheet.

4 Simplified Schematic

VIN (4.5V-75V)

Typical Application Circuit Efficiency

R_UV2

VIN

BOOT

C_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

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...39

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LM5088-Q1 替代型号

型号	品牌	替代类型	描述	数据表
LM25088	TI	功能相似	LM25088, LM25088-Q1 Wide Input Range Non-Synchronous Buck Controller
LM5088	TI	功能相似	LM5088, LM5088-Q1 Wide Input Range Non-Synchronous Buck Controller
LM25088-Q1	TI	功能相似	LM25088, LM25088-Q1 Wide Input Range Non-Synchronous Buck Controller

与LM5088-Q1相关器件

型号	品牌	获取价格	描述	数据表
LM5088QMH-1	TI	获取价格	LM5088, LM5088-Q1 Wide Input Range Non-Synchronous Buck Controller
LM5088QMH-1/NOPB	TI	获取价格	Wide Input Range Non-Synchronous Buck Controller
LM5088QMH-2	TI	获取价格	LM5088, LM5088-Q1 Wide Input Range Non-Synchronous Buck Controller
LM5088QMH-2/NOPB	TI	获取价格	Wide Input Range Non-Synchronous Buck Controller
LM5088QMHX-1	TI	获取价格	LM5088, LM5088-Q1 Wide Input Range Non-Synchronous Buck Controller
LM5088QMHX-1/NOPB	TI	获取价格	Wide Input Range Non-Synchronous Buck Controller
LM5088QMHX-2	TI	获取价格	LM5088, LM5088-Q1 Wide Input Range Non-Synchronous Buck Controller
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

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