Datasheet > LM51581QRTERQ1

LM51581QRTERQ1

更新时间： 2024-09-27 02:50:47

品牌	Logo	应用领域
德州仪器 - TI		/
页数	文件大小	规格书
47页	1964K
描述
LM5158x-Q1 2.2-MHz Wide VIN 85-V Output Boost/SEPIC/Flyback Converter with Dual Random Spread Spectrum

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LM51581QRTERQ1 数据手册

LM5158-Q1, LM51581-Q1

SNVSB88A – AUGUST 2021 – REVISED OCTOBER 2021

LM5158x-Q1 2.2-MHz Wide V_IN85-V Output Boost/SEPIC/Flyback Converter with Dual

Random Spread Spectrum

1 Features

2 Applications

•

AEC-Q100 qualified for automotive applications

– Temperature grade 1: –40°C to +125°C T_A

Functional Safety-Capable

– Documentation available to aid functional safety

system design

Suited for wide operating range for car battery

applications

– 3.2-V to 60-V input operating range (65-V abs

max)

•

Battery-powered wide input boost, SEPIC, flyback

converter

Automotive voltage stabilizer in SEPIC

High voltage LiDAR power supply

Automotive LED bias supply

Multiple-output flyback without optocoupler

Hold-up capacitor charger

Inverter bias supply

•

Piezo driver/motor driver bias supply

– 83-V maximum output (85-V abs max)

– Minimum boost supply voltage of 1.5 V when

BIAS ≥ 3.2 V

– Input transient protection up to 65 V

– Minimized battery drain

3 Description

The LM5158x-Q1 device is a wide input range, non-

synchronous boost converter with an integrated 85-V,

3.26-A (LM5158-Q1) or 85-V, 1.63-A (LM51581-Q1)

power switch.

•

Low shutdown current (I_Q≤ 2.6 µA)

Low operating current (I_Q≤ 670 µA)

The device can be used in boost, SEPIC, and flyback

topologies. It can start up from a single-cell battery

with a minimum of 3.2 V. It can operate with the input

supply voltage as low as 1.5 V if the BIAS pin is

greater than 3.2 V.

•

Small solution size and low cost

– Maximum switching frequency up to 2.2 MHz

– 16-pin QFN package (3 mm × 3 mm) with

wettable flanks

– Integrated error amplifier allows primary-side

regulation without optocoupler (flyback)

– Minimized undershoot during cranking

– Accurate current limit (see the Device

Comparison Table)

EMI mitigation

– Selectable dual random spread spectrum

– Lead-less package

The BIAS pin operates up to 60 V (65-V absolute

maximum) for automotive load dump. The switching

frequency is dynamically programmable from 100

kHz to 2.2 MHz with an external resistor. Switching

at 2.2 MHz minimizes AM band interference and

allows for a small solution size and fast transient

response. The device provides a selectable Dual

Random Spread Spectrum to help reduce the EMI

over a wide frequency range.

•

Higher efficiency with low-power dissipation

– 133-mΩ R_DSONswitch

Device Information

– Fast switching, small switching loss

Avoid AM band interference and crosstalk

– Optional clock synchronization

– Dynamically programmable wide switching

frequency from 100 kHz to 2.2 MHz

Integrated protection features

PART NUMBER

LM5158-Q1

PACKAGE⁽¹⁾

BODY SIZE (NOM)

WQFN (16)

3.00 mm × 3.00 mm

LM51581-Q1

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

the end of the data sheet.

•

– Constant current limiting over input voltage

– Selectable hiccup mode overload protection

– Programmable line UVLO

V_LOAD

V_SUPPLY

BIAS VCC

– OVP protection

– Thermal shutdown

Accurate ±1% accuracy feedback reference

Adjustable soft start

UVLO

COMP

•

PGOOD

PGND AGND MODE

PGOOD indicator

Create a custom design using the LM5158x-Q1

with the WEBENCH^®Power Designer

Typical SEPIC Application

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...47

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与LM51581QRTERQ1相关器件

型号	品牌	获取价格	描述	数据表
LM51581RTER	TI	获取价格	LM5158x 2.2-MHz Wide VIN 85-V Output Boost/SEPIC/Flyback Converter with Dual Random Spread
LM5158-Q1	TI	获取价格	LM5158x 2.2-MHz Wide VIN 85-V Output Boost/SEPIC/Flyback Converter with Dual Random Spread
LM5158QRTERQ1	TI	获取价格	LM5158x-Q1 2.2-MHz Wide VIN 85-V Output Boost/SEPIC/Flyback Converter with Dual Random Spr
LM5158RTER	TI	获取价格	LM5158x 2.2-MHz Wide VIN 85-V Output Boost/SEPIC/Flyback Converter with Dual Random Spread
LM5158X	TI	获取价格	LM5158x 2.2-MHz Wide VIN 85-V Output Boost/SEPIC/Flyback Converter with Dual Random Spread
LM5158X-Q1	TI	获取价格	LM5158x-Q1 2.2-MHz Wide VIN 85-V Output Boost/SEPIC/Flyback Converter with Dual Random Spr
LM5160	TI	获取价格	LM5160A, LM5160 Wide Input 65-V, 1.5-A Synchr
LM5160A	TI	获取价格	LM5160A 宽输入 65V、2A 同步降压/Fly-Buck™ 转换器
LM5160A_15	TI	获取价格	LM5160A, LM5160 Wide Input 65-V, 1.5-A Synchr
LM5160ADNTJ	TI	获取价格	LM5160A 宽输入 65V、2A 同步降压/Fly-Buck™ 转换器 \| DNT \|

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