Datasheet > A80601KESJSR

A80601KESJSR

更新时间： 2023-12-18 00:00:00

品牌	Logo	应用领域
急速微 - ALLEGRO		/
页数	文件大小	规格书
37页	4869K
描述
High Power LED Driver with Pre-Emptive Boost for Ultra-High Dimming Ratio and Low Output Ripple

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A80601KESJSR 数据手册

A80601 and A80601-1

High Power LED Driver with Pre-Emptive Boost

for Ultra-High Dimming Ratio and Low Output Ripple

FEATURES AND BENEFITS

DESCRIPTION

The A80601 is a multi-output LED driver for automotive

applicationssuchasexteriorlighting,heads-updisplay,andmid-

size LCD backlighting. It implements a current-mode boost/

SEPICconverterwithgatedriverforexternalN-MOSFET.This

allows greater output power even at minimum supply voltage.

• Automotive AEC-Q100 qualified

• Enhanced fault handling for ASIL B system compliance

• Wide input voltage range of 4.5 to 40 V for start/stop,

cold crank, and load dump requirements

• Operate in Boost or SEPIC mode for flexible output

• Gate driver for external NMOS to deliver higher output power

• Four integrated LED current sinks, up to 210 mA each

• Boost switching frequency synced externally or

programmed from 200 kHz to 2.3 MHz

• Programmable boost frequency dithering to reduce EMI

• Advanced control allows minimum PWM on-time down

to 0.3 µs, and avoids MLCC audible noises

• LED contrast ratio: 15,000:1 at 200 Hz using PWM

dimming alone, 150,000:1 when combining PWM and

analog dimming

The A80601 provides four integrated current sinks driving up

to 210 mAper string. Multiple sinks can be paralleled together

to achieve higher LED currents up to 840 mA. The IC operates

from single power supply from 4.5 to 40 V; once started, it can

continue to operate down to 4 V. This allows it to withstand

stop/start, cold crank, and load dump conditions encountered

in automotive systems.

TheA80601cancontrolLEDbrightnessthroughexternalPWM

signal.ByusingthepatentedPre-EmptiveBoostcontrol,anLED

brightnesscontrastratioof15,000:1canbeachievedusingPWM

dimmingat200Hz.Ahigherratioof150,000:1ispossiblewhen

using a combination of PWM and analog dimming.

• Excellent input voltage transient response even at lowest

PWM duty cycle

• Gate driver for optional PMOS input disconnect switch

• Extensive fault protection features

Continued on next page...

PACKAGE:

APPLICATIONS

• Automotive infotainment backlighting

24-Pin 4 mm × 4 mm QFN

with Wettable Flank

• Automotive heads-up display

• Automotive interior and exterior lighting

Not to scale

V_IN

V_OUT

ꢀoptional

R_SENSE

R_ADJ

C_in

R_OVP

R_GDRV

R_CS

C_DRV

C_OUT

GATE

VDRV GDRV

A80601

FSET

PGND

OVP

Vsense

VIN

C_VDD

V_DD

R_PU

LED1

FAULT

Up to 11 WLEDs in series

Up to 210 mA/channel

LED2

LED3

Enable

Combine to drive up to 840 mA total

PWM

ADIM

PWM t_ON≥ 0.3 µs

LED4

CLKOUT

AGND

i_LED

COMP

PEB

100%

ISET

DITH

R_Z

ADIM

C_P

R_M

PEB = Pre-Emptive Boost

(R_Dcontrols the delay time)

DITH = Dithering Control

R_ISET

R_FSET

R_D

C_M

C_Z

APWM 100 kHz 0-90%

(Modulation frequency and range)

Figure 1: A80601 in Boost conﬁguration where V_OUTis higher than V_IN

A80601-DS

March 4, 2019

MCO-0000618

12 3 4 5 6 7...37

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与A80601KESJSR相关器件

型号	品牌	描述	获取价格	数据表
A80601KESJSR-1	ALLEGRO	High Power LED Driver with Pre-Emptive Boost for Ultra-High Dimming Ratio and Low Output R	获取价格
A80602	ALLEGRO	High Power LED Driver with Pre-Emptive Boost for Ultra-High Dimming Ratio and Low Output R	获取价格
A80602-1	ALLEGRO	High Power LED Driver with Pre-Emptive Boost for Ultra-High Dimming Ratio and Low Output R	获取价格
A80602KESJSR	ALLEGRO	High Power LED Driver with Pre-Emptive Boost for Ultra-High Dimming Ratio and Low Output R	获取价格
A80602KESJSR-1	ALLEGRO	High Power LED Driver with Pre-Emptive Boost for Ultra-High Dimming Ratio and Low Output R	获取价格
A80603	ALLEGRO	LED Driver with Pre-Emptive Boost for Ultra-High Dimming Ratio and Low Output Ripple	获取价格

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