Datasheet > LM51581-Q1

LM51581-Q1

更新时间： 2024-11-15 02:50:15

品牌	Logo	应用领域
德州仪器 - TI		/
页数	文件大小	规格书
46页	1851K
描述
LM5158x 2.2-MHz Wide VIN 85-V Output Boost/SEPIC/Flyback Converter with Dual Random Spread Spectrum

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LM51581-Q1 数据手册

LM5158, LM51581

SNVSBZ7 – OCTOBER 2021

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

Random Spread Spectrum

•

Industrial PLC

Inverter bias supply

Piezo driver/motor driver bias supply

1 Features

•

Suited for wide operating range for battery

applications

3 Description

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

max)

– 83-V maximum output (85-V abs max)

– Minimum boost supply voltage of 1.5 V when

BIAS ≥ 3.2 V

The LM5158x device is a wide input range, non-

synchronous boost converter with an integrated 85-V,

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

switch.

– Input transient protection up to 65 V

– Minimized battery drain

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.

•

Low shutdown current (I_Q≤ 2.6 µA)

Low operating current (I_Q≤ 670 µA)

•

Small solution size and low cost

– Maximum switching frequency up to 2.2 MHz

– 16-pin QFN package (3 mm × 3 mm)

– Integrated error amplifier allows primary-side

regulation without optocoupler (flyback)

– 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). 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

PART NUMBER

LM5158

LM51581

PACKAGE⁽¹⁾

BODY SIZE (NOM)

– 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

WQFN (16)

3.00 mm × 3.00 mm

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

the end of the data sheet.

V_LOAD

V_SUPPLY

•

– Constant current limiting over input voltage

– Selectable hiccup mode overload protection

– Programmable line UVLO

– OVP protection

– Thermal shutdown

BIAS VCC

UVLO

COMP

PGOOD

PGND AGND MODE

•

Accurate ±1% accuracy feedback reference

Adjustable soft start

PGOOD indicator

Create a custom design using the LM5158x with

the WEBENCH^®Power Designer

Typical SEPIC Application

2 Applications

•

Battery-powered wide input boost, SEPIC, flyback

converter

•

LED bias supply

Multiple-output flyback without optocoupler

Loop powered fire detection

Hold-up capacitor charger

Power module

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...46

中文翻译

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与LM51581-Q1相关器件

型号	品牌	获取价格	描述	数据表
LM51581QRTERQ1	TI	获取价格	LM5158x-Q1 2.2-MHz Wide VIN 85-V Output Boost/SEPIC/Flyback Converter with Dual Random Spr
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

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