Datasheet > A8650KEJTR-T

A8650KEJTR-T

更新时间： 2024-09-25 01:10:55

品牌	Logo	应用领域
急速微 - ALLEGRO		/
页数	文件大小	规格书
31页	3038K
描述
Low Input Voltage, Adjustable Frequency 2 A Synchronous Buck Regulator with EN/SYNC and Power OK

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A8650KEJTR-T 数据手册

A8650

Low Input Voltage, Adjustable Frequency

2 A Synchronous Buck Regulator with EN/SYNC and Power OK

Description

Features and Benefits

The A8650 is an adjustable frequency, high output current,

PWMregulatorthatintegratesahigh-side,P-channelMOSFET

and a low-side, N-channel MOSFET. TheA8650 incorporates

current-modecontroltoprovidesimplecompensation,excellent

loop stability, and fast transient response. The A8650 utilizes

external compensation to accommodate a wide range of power

components to optimize transient response without sacrificing

stability. TheA8650 regulates input voltages from 2.5 to 5.5V,

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

at least 2.0 A of load current.

• Automotive AEC-Q100 qualified

• Operating voltage range: 2.5 to 5.5 V

• UVLO stop threshold: 2.25 V (max)

• Adjustable switching frequency (f_OSC): 0.25 to 2.45 MHz

• Synchronizes to external clock: 1.2× to 1.5× f_OSC(typ)

• Internal 70 mΩ high-side switching MOSFET

• Internal 55 mΩ low-side switching MOSFET

• Capable of at least 2.0 A steady-state output current

• Sleep mode supply current less than 3 μA

• Adjustable output voltage as low as 0.8 V with ±1%

accuracy from –40°C to 125°C

A8650 features include an externally adjustable switching

frequency, an externally set soft start time to minimize inrush

currents, an EN/SYNC input to either enable V_OUTand/or

synchronize the PWM switching frequency, and a Power OK

(POK) output to indicate whenV_OUTis within regulation. The

sleep mode current of the A8650 control circuitry is less than

3 μA. Protection features include V_INundervoltage lockout

• Soft start time externally set via the SS pin

• Pre-biased startup capable

• Externally adjustable compensation

Continued on the next page…

Packages:

10-pin MSOP with exposed

10-pin DFN with exposed

thermal pad (suffix EJ)

Continued on the next page…

thermal pad (suffix LY)

Applications:

• GPS/Infotainment

• Automobile Audio

• Home Audio

• Network and Telecom

Not to scale

Typical Application Diagram

L_O

1.0 µH

V_IN

VOUT

VIN

CIN1

3.3 µF

1206

CIN2

0.1 µF

0805

CIN3

10 nF

0603

RFB1

CO1

10 µF

1206

CO2

10 µF

1206

CO3

0.1 µF

0805

CO4

10 nF

0603

9.09 kΩ

A8650

GND

PGND

3.3V

RFB2

7.15 kΩ

EN/SYNC

FSET

RPU

10 kΩ

C_SS

10 nF

POK

COMP

POK

R_FSET

10.7 kΩ

R_Z

C_P

22 pF

6.65 kΩ

C_Z

1.5 nF

Typical application schematic, configured for V_IN= 5 V, V_OUT= 1.8 V, I_OUT= 2.0 A at 2 MHz

A8650-DS, Rev. 8

12 3 4 5 6 7...31

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与A8650KEJTR-T相关器件

型号	品牌	获取价格	描述	数据表
A8650KLYTR-T	ALLEGRO	获取价格	Low Input Voltage, Adjustable Frequency 2 A Synchronous Buck Regulator with EN/SYNC and Po
A8651	ALLEGRO	获取价格	Low Input Voltage, Adjustable Frequency Dual Synchronous 2A / 2A Buck Regulator with Synch
A8651KLPTR-T	ALLEGRO	获取价格	Low Input Voltage, Adjustable Frequency Dual Synchronous 2A / 2A Buck Regulator with Synch
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.

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