Microchip MAQ3203 Manual


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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
CS
VIN
AGND
8 DRV
PGND
DIM
EN
7
6
5
2
3
4
High-Brightness LED Driver Controller with High-Side Current Sense


Produkt Specifikationer

Mærke: Microchip
Kategori: Ikke kategoriseret
Model: MAQ3203

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