Certifications

iso9001
iso14001
icas
Delivery
security
warranty
roiginal
RoHS
UL
Millionen elektronischer Teile auf Lager. Preis- und Vorlaufzeitangebote innerhalb von 24 Stunden.

Fully integrated High brightness (HB) LED driver solution

Apr 13 2023 2023-04 Semiconductors Allegro MicroSystems, LLC
Article Cover
The Allegro MicroSystems A8511 Multi-output WLED/RGB Driver is a fully integrated high brightness (HB) LED driver solution for medium sized backlit displays. The flexible A8511 drive does not require an external power device to complete the backlight design standard. The A8511 drive is mounted in a surface-mounted, 28-pin TSSOP package (suffix LP) with an exposed heat pad for enhanced heat dissipation. The unit is lead-free (Pb), 100% matte tin lead frame plating.

The Allegro MicroSystems A8511 Multi-output WLED/RGB Driver is a fully integrated high brightness (HB) LED driver solution for medium sized backlit displays. The flexible A8511 drive does not require an external power device to complete the backlight design standard. The A8511 integrates FETs for boost converters and four 150mA current receivers, providing a complete integrated solution at HB LED current levels.

 

When connected together, the device's LED channel allows a reception capacity of up to 600mA. The A8511 operates on a single power supply of 6.8V to 21V and can withstand voltages up to 40V. The operating frequency can be set to 2MHz to avoid interference with AM radio bands. The integrated boost DMOS switch is rated at 40V and 3.6A. PWM dimming allows the LED current to be controlled in a 1000:1 ratio. Additional 4:1 dimming can be achieved using the DIM pin.

 

The Allegro MicroSystems A8511 Multi-output WLED/RGB driver prevents short circuits in the output connector with an integrated output disconnect switch. Optional external thermiors limit LED current according to panel temperature, and the A8511 drive is mounted in a surface-mounted, 28-pin TSSOP package (suffix LP) with an exposed heat pad for enhanced heat dissipation. The unit is lead-free (Pb), 100% matte tin lead frame plating.

 

Features

● Four LED receivers rated 150mA(total 600mA)

● Boost converter integrates 40V DMOS switch and ovp load dump protection

● 600kHz to 2.2MHz switching frequency - Capable of operating above AM band

● Internal bias power supply for single-supply operation (V(IN)=6.8V to 21V)

● Turn off the current limiting battery leakage

● Active current sharing between LED strings is 0.8% current matching and 0.7% accuracy

● PWM dimming and LED PWM duty ratio control

● 4000:1 Dimming range

● Extensive failure mode protection schemes:

-   Short-circuiting LED protection prevents misconnected loads from being disconnected from the true output

-   Turn on the LED disconnect to protect LED faults

-   External thermistor induction limits LED temperature

-   Output overvoltage protection (OVP): 19.5V Adjustable to 38V by default

-   Turn on Schottky and turn on OVP resistance protection to prevent failure of external components

-   Input undervoltage and overvoltage protection against V(IN) changes (UVLO and OVLO)

-   Boost current limit, output short circuit limit, over temperature protection (OTP), soft start

 

Applications

● GPS navigation system

● Automotive infotainment

● Standby camera display

● Cluster backlight

● Portable DVD player

● Industrial liquid crystal display

Die Produkte, an denen Sie interessiert sein könnten

GP100H3R48TEZ GP100H3R48TEZ AC/DC CONVERTER 52V 6000W 8388

More on Order

CLP0224FPXXXZ01A CLP0224FPXXXZ01A AC/DC CONVERTER 24V 200W 6516

More on Order

NSR003A0X4-49Z NSR003A0X4-49Z DC DC CONVERTER 6858

More on Order

AXH010A0G-SRZ AXH010A0G-SRZ DC DC CONVERTER 2.5V 25W 8496

More on Order

APTS050A0X43-SRPHZ APTS050A0X43-SRPHZ DC DC CONVERTER 0.7-2V 100W 2538

More on Order

JNCW450R41Z JNCW450R41Z DC DC CONVERTER 32V 450W 8910

More on Order

SW003A5F91-SRBZ SW003A5F91-SRBZ DC DC CONVERTER 3.3V 12W 6732

More on Order

SC003A5F91-SRZ SC003A5F91-SRZ DC DC CONVERTER 3.3V 12W 3544

More on Order

QHW050A1 QHW050A1 DC DC CONVERTER 5V 50W 7632

More on Order

NH020F NH020F DC DC CONVERTER 3.3V 20W 5922

More on Order

LW010A9 LW010A9 DC DC CONVERTER 5V 10W 2196

More on Order

JC075B1 JC075B1 DC DC CONVERTER 12V 75W 6408

More on Order

ATH016A0X43 ATH016A0X43 DC DC CONVERTER 0.8-3.6V 58W 4446

More on Order

ATA010A0X43 ATA010A0X43 DC DC CONVERTER 0.8-5.5V 55W 6426

More on Order

AXA003A0X AXA003A0X DC DC CONVERTER 0.8-5.5V 16W 3852

More on Order

QBVW033A0B9641-HZ QBVW033A0B9641-HZ DC DC CONVERTER 12V 400W 3006

More on Order

QBVW033A0B641-HZ QBVW033A0B641-HZ DC DC CONVERTER 12V 400W 8982

More on Order

ESTW025A0F4Z ESTW025A0F4Z DC DC CONVERTER 3.3V 83W 7560

More on Order

QSDW050A0B41-PHZ QSDW050A0B41-PHZ 36-75VIN, 50A/12V OUT, 600W WITH 4068

More on Order

PJT004A0X3-SRZ PJT004A0X3-SRZ DC DC CONVERTER 0.51-5.5V 2430

More on Order

QBDW033A0B41-HZ QBDW033A0B41-HZ DC DC CONVERTER 12V 396W 7212

More on Order

KBVW006A0B41Z KBVW006A0B41Z DC DC CONVERTER 12V 72W 18096

More on Order

MDT040A0X3-SRPHZ MDT040A0X3-SRPHZ DC DC CONVERTER 0.45-2V 40A 53760

More on Order

A8511KLPTR-T A8511KLPTR-T IC LED DRIVER RGLTR DIM 28TSSOP 4248

More on Order