Datasheet > A80606

A80606

更新时间： 2022-06-24 15:42:43

品牌	Logo	应用领域
急速微 - ALLEGRO		/
页数	文件大小	规格书
41页	5340K
描述
High Power LED Driver with Pre-Emptive Boost

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数据手册

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A80606 数据手册

A80606 and

A80606-1

High Power LED Driver with Pre-Emptive Boost

for Ultra-High Dimming Ratio and Low Output Ripple

DESCRIPTION (continued)

Switchingfrequencycanbeexternallysynchronizedorprogrammed

between 200 kHz and 2.3 MHz. This allows operation either above

or below the AM band. A programmable dithering feature further

reduces EMI. A clock-out is provided for other converters to sync

to the A80606.

The A80606 provides protection against output short, overvoltage,

open- or shorted-LED pin, and overtemperature. A cycle-by-cycle

current limit protects the external boost switch against high current

overloads. An external P-MOSFET can optionally be used to

disconnect input supply in case of output to ground short fault. The

A80606-1 is similar toA80606 except it adopts ‘One-Out-All-Out’

fault handling (See Fault Table section for details).

SELECTION GUIDE ^[1]

Part Number

A80606KEVJSR

A80606KEVJSR-1

Fault Handling

One-Out-Continue

One-Out-All-Out

LED Driver

Package

Packing

48-pin 7 mm × 7 mm wettable flank QFN

with exposed thermal pad and sidewall plating

4000 pieces

per 13-inch reel

6 × 180 mA

^[1]Contact Allegro for additional packing options.

ABSOLUTE MAXIMUM RATINGS ^[2]

Characteristic

Symbol

Notes

Rating

Unit

LEDx Pin

OVP pin

VIN

V_LEDx

V_OVP

V_IN

x = 1..6

–0.3 to 40

Higher of –0.3

and (V_IN– 7.4) to

V_IN+0.4

V_SENSE

V_GATE

VSENSE, GATE

VDRV, GDRV

V_DRV,V_GDRV

V_CS

–1.0 to 7.5

–0.3 to 7

EN, PWM, FAULT, ADIM, COMP,

DITH, PEB, FSET, ISET, VDD

External input signals must not be higher than V_IN+ 0.4 V

–0.3 to 5.5

Maximum Junction Temperature

Storage Temperature

T_J(max)

T_stg

150

°C

–55 to 150

^[2]Stresses beyond those listed in this table may cause permanent damage to the device. The absolute maximum ratings are stress ratings only,

and functional operation of the device at these or any other conditions beyond those indicated in the Electrical Characteristics table is not implied.

Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.

THERMAL CHARACTERISTICS: May require derating at maximum conditions; see application information

Characteristic

Symbol

Test Conditions ^[4]

Value

Unit

Package Thermal Resistance

R_θJA

EV package measured on 4-layer PCB based on JEDEC standard

°C/W

^[4]Additional thermal information available on the Allegro website.

Allegro MicroSystems

955 Perimeter Road

Manchester, NH 03103-3353 U.S.A.

www.allegromicro.com

123 4 5 6 7...41

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