Microchip MAQ3203 Manual

Microchip Ikke kategoriseret MAQ3203

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 2020 Microchip Technology Inc. DS20006407A-page 1

MAQ3203

Features

• AEC-Q100 Qualified

• 4.5V to 42V Input Voltage Range

• High Efficiency (>90%)

• ±5% LED Current Accuracy

• Dither Enabled for Low EMI

• High-Side Current Sense

• Dedicated Dimming Control Input

• Hysteretic Control (No Compensation)

• Up to 1.5 MHz Switching Frequency

• Adjustable Constant LED Current

• Overtemperature Protection

• –40°C to +125°C Junction Temperature Range

Applications

• Automotive Lighting

• Industrial Lighting

General Description

The MAQ3203 is a hysteretic, step-down,

constant-current, high-brightness LED (HB LED)

driver. It provides an ideal solution for interior/exterior

lighting, architectural and ambient lighting, LED bulbs,

and other general illumination applications.

The MAQ3203 is well suited for lighting applications

that require a wide input voltage range. The hysteretic

control gives good supply rejection and fast response

during load transients and PWM dimming. The

high-side current sensing and on-chip current-sense

comparator delivers LED current with ±5% accuracy.

An external high-side current-sense resistor is used to

set the output current.

The MAQ3203 offers a dedicated PWM input (DIM)

that enables a wide range of pulsed dimming. A

high-frequency switching operation up to 1.5 MHz

allows the use of smaller external components

minimizing space and cost. The MAQ3203 offers

frequency dither feature for EMI control.

The MAQ3203 operates over a junction temperature

from –40°C to +125°C and is available in an 8-pin SOIC

package. The MAQ3203 is AEC-Q100 qualified for

automotive applications.

Package Type

MAQ3203

8-Lead SOIC (M)

(Top View)

1VCC

VIN

AGND

8 DRV

PGND

DIM

High-Brightness LED Driver Controller with High-Side Current Sense

MAQ3203

DS20006407A-page 2  2020 Microchip Technology Inc.

Typical Application Circuit

Functional Block Diagram

MAQ3203

STEP-DOWN LED DRIVER

VIN

CIN

10μF

RCS

CVCC

1μF

MOSFET

MAQ3203YM

VIN

DIM

DRV

VCC

AGND

PGND

LEDs

Nȍ

Produkt Specifikationer

Mærke:	Microchip
Kategori:	Ikke kategoriseret
Model:	MAQ3203

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