Datasheet > MAQ3203

MAQ3203

更新时间： 2024-09-27 14:53:11

品牌	Logo	应用领域
美国微芯 - MICROCHIP		/
页数	文件大小	规格书
28页	2122K
描述
The MAQ3203 is a hysteretic, step-down, constant-current, High-Brightness LED (HB LED) driver. It

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MAQ3203 数据手册

MAQ3203

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

Features

General Description

• AEC-Q100 Qualified

The MAQ3203 is

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.

• 4.5V to 42V Input Voltage Range

• High Efficiency (>90%)

• ±5% LED Current Accuracy

• Dither Enabled for Low EMI

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.

• 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

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.

Applications

• Automotive Lighting

• Industrial Lighting

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)

VCC 1

CS 2

8 DRV

7 PGND

6 DIM

5 EN

VIN 3

AGND 4

 2020 Microchip Technology Inc.

DS20006407A-page 1

12 3 4 5 6 7...28

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