Használati útmutató Microchip 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 1.5MHz 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 1.5MHz
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
8DRV
PGND
DIM
EN
7
6
5
2
3
4
High-Brightness LED Driver Controller with High-Side Current Sense
Termékspecifikációk
| Márka: | Microchip |
| Kategória: | nincs kategorizálva |
| Modell: | MAQ3203 |
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