Datasheet > A8651KLPTR-T

A8651KLPTR-T

更新时间： 2024-09-25 01:18:23

品牌	Logo	应用领域
急速微 - ALLEGRO		/
页数	文件大小	规格书
34页	1319K
描述
Low Input Voltage, Adjustable Frequency Dual Synchronous 2A / 2A Buck Regulator with Synchronization, 2x EN, and 2x NPOR

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A8651KLPTR-T 数据手册

A8651

Low Input Voltage, Adjustable Frequency Dual Synchronous

2A / 2 A Buck Regulator with Synchronization, 2x EN, and 2x NPOR

Description

Features and Benefits

The A8651 is an adjustable frequency, high output current,

PWMregulatorthatintegratesahigh-side,P-channelMOSFET

and a low-side, N-channel MOSFET. TheA8651 incorporates

current-modecontroltoprovidesimplecompensation,excellent

loop stability, and fast transient response. The A8651 utilizes

external compensation to accommodate a wide range of power

components to optimize transient response without sacrificing

stability. TheA8651 regulates input voltages from 2.5 to 5.5V,

down to output voltages as low as 0.8 V and is able to supply

up to 2 A of load current per regulator.

• AEC-Q100 Qualified

• Operating voltage range: 2.5 to 5.5 V

• UVLO stop threshold: 2.25 V (max)

• Dual outputs with up to 2 A output current per regulator

• Adjustable output voltage as low as 0.8 V

• Internal 80 mΩ high-side switching MOSFET

• Internal 55 mΩ low-side switching MOSFET

• Adjustable switching frequency (f_SW): 0.35 to 2.2 MHz

• Synchronizes to external clock: 1.2× to 1.5× f_OSC

• 180° phase shift between switching regulators

• Sleep mode supply current less than 5 μA

• Soft start time externally set via the SS pin

• Pre-biased startup capable

The A8651 features include an externally adjustable and

synchronizable switching frequency, an externally-set soft

start time to minimize inrush currents, independent EN inputs,

and independent NPOR outputs with 7.5 ms delay. The sleep

mode current of the A8651 control circuitry is less than 5 μA.

ProtectionfeaturesincludeVINundervoltagelockout(UVLO),

cycle-by-cycle overcurrent protection (OCP), hiccup mode

short-circuit protection (HIC), overvoltage protection (OVP),

and thermal shutdown (TSD). In addition, theA8651 provides

open-circuit, adjacent pin short-circuit, and short-to-ground

• Externally adjustable compensation

• Stable with ceramic output capacitors

• Independent enable inputs and NPOR output pins

• Adjustable current limiting (OCP) for each regulator

• Hiccup mode short-circuit protection (HIC)

• Overvoltage and overtemperature protection

• Open-circuit and adjacent pin short-circuit tolerant

• Short-to-ground tolerant at every pin

Continued on the next page…

Package: 20-pin TSSOP with exposed

thermal pad (suffix LP)

Applications:

• GPS/Infotainment

• Automotive audio

• Home audio

• Network and telecom

Not to scale

Typical Application Diagram

SYNCin

FSET/SYNC

OUT1

SYNC

FSET

SW1

FB1

VIN1

GND

FB1

IN1

PGND1

A8651

FB2

EN1

PU1

COMP1

SS1

ISET1

NPOR1

SW2

SS1

OUT2

SET1

VIN2

FB3

IN2

FB2

PGND2

EN2

FB4

PU2

COMP2

SS2

ISET2

NPOR2

SS2

SET2

A8651-DS

12 3 4 5 6 7...34

中文翻译

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与A8651KLPTR-T相关器件

型号	品牌	获取价格	描述	数据表
A8652	ALLEGRO	获取价格	Wide Input Voltage, Synchronous USB Buck Regulator with Remote Load Regulation
A8652KLPTR-T	ALLEGRO	获取价格	Wide Input Voltage, Synchronous USB Buck Regulator with Remote Load Regulation
A8653	ALLEGRO	获取价格	Wide Input Voltage, Synchronous USB Buck Regulator with Remote Load Regulation
A8653KLPTR-T	ALLEGRO	获取价格	Wide Input Voltage, Synchronous USB Buck Regulator with Remote Load Regulation
A8654	ALLEGRO	获取价格	Wide Input Voltage, Adjustable Frequency, 3 A, 2 MHz Synchronous Buck Regulator
A8654KLPTR-T	ALLEGRO	获取价格	Wide Input Voltage, Adjustable Frequency, 3 A, 2 MHz Synchronous Buck Regulator
A8670	ALLEGRO	获取价格	The A8670 is a synchronous buck converter capable of delivering up to 2 A.
A8670EESTR-T	ALLEGRO	获取价格	The A8670 is a synchronous buck converter capable of delivering up to 2 A.
A8672	ALLEGRO	获取价格	Fixed Frequency High Current Synchronous Buck Regulator With Fault Warnings and Power OK
A8672EEGTR-T	ALLEGRO	获取价格	Fixed Frequency High Current Synchronous Buck Regulator With Fault Warnings and Power OK

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