Datasheet > A8654KLPTR-T

A8654KLPTR-T

更新时间： 2024-09-25 01:22:19

品牌	Logo	应用领域
急速微 - ALLEGRO		/
页数	文件大小	规格书
29页	841K
描述
Wide Input Voltage, Adjustable Frequency, 3 A, 2 MHz Synchronous Buck Regulator

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A8654KLPTR-T 数据手册

A8654

Wide Input Voltage, Adjustable Frequency,

3 A, 2 MHz Synchronous Buck Regulator

FEATURES AND BENEFITS

DESCRIPTION

• Automotive AEC-Q100 qualified

• Operating voltage range: 4 to 36 V

• UVLO STOP threshold: 2.6 V_TYP

TheA8654isahighoutputcurrentsynchronousbuckregulator

that integrates low R_DSONhigh-side and low-side N-channel

MOSFETs.TheA8654incorporatesPWMcurrent-modecontrol

• Maximized duty cycle for low-dropout operation

• Withstands surge voltages up to 40 V

• Capable of 3 A steady-state output current

• Integrated high-side and low-side switching MOSFETs

• Adjustable switching frequency (f_SW): 100 kHz to

2.2 MHz

• Synchronization capability to external clock: 100 kHz to

2.2 MHz

• Frequency dithering for lower EMI signature

• External adjustable compensation network

• Soft-start time externally set via the SS pin

• Pre-bias startup compatible

to provide simple compensation, excellent loop stability and

fasttransientresponse.TheA8654usesexternalcompensation

to accommodate a wide range of power components to achieve

both excellent loop stability and desirable transient response.

The A8654 regulates nominal input voltages from 4 to

36 V and remains operational when V_INdrops as low as

2.6 V. When the input voltage approaches the output voltage,

the duty cycle is maximized to maintain the output voltage.

The A8654 is able to provide 3 A steady-state load current.

The A8654 features externally set soft-start time, external

compensation network, an EN input to enable V_OUT, a

SYNC/FSET input to synchronize or set the PWM switching

• Active-low, power-on reset (NPOR) output

Continued on next page...

APPLICATIONS

Continued on next page...

• Automotive Infotainment • Advanced Driver

PACKAGES:

Systems

□ Audio, Video Navigation □ RADAR, LIDAR,

Systems mmWave systems

□ Rear Seat Media Display □ Vision and Detection

Assistance Systems

16-Pin eTSSOP (LP) with exposed thermal pad

□ Instrument Clusters

□ Telematics

System

• Industrial

□ General 24 V/36 V

applications

Not to scale

V_IN

BOOT

VIN

C_IN

2 × 4.7 µF

C_BOOT

100 nF

GND

L_O

C_O

SYNC/FSET

A8654

R_FSET

R_PU

10 kΩ

NPOR

C_SS

22 nF

COMP

R_FB1

R_Z

C_P

C_Z

R_FB2

Typical Application Diagram 1

A8654-DS, Rev. 2

12 3 4 5 6 7...29

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