MP2489 6-60V, 1A Step Down White LED Driver QFN6

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MP2489 6-60V, 1A Step Down White LED Driver QFN6

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pMPS MP2489 — Step Down White LED Driver, 6-60V input, 1 A output, QFN6./p

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MPS QFN6 LED Drivers LED Power Management

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MP2489 6-60V, 1A Step Down White LED Driver QFN6

The MPS MP2489 is a Step Down White LED Driver. It operates from a 6 V to 60 V input and is rated for 1 A. It is supplied in a QFN6 package.

The MP2489 is a high efficiency step-down converter designed in continuous current mode for driving the high brightness Light Emitting Diodes (LED) from wide input voltage 6V–60V.

Key Specifications

Part Number	MP2489
Function	Step Down White LED Driver
Input Voltage	6 V to 60 V
Current Rating	1 A
Interface	PWM
Package	QFN6
Ordering Codes	MP2489

Features

Internal 65V MOSFET
Wide 6V to 60V Input Range
≥1A Output Current
High Efficiency (>95%)
Hysteresis Control
PWM & Analog Dimming
1000:1 PWM Dimming Resolution
Thermal Shutdown
Inherent Open LED Protection
Short LED Protection

Typical Application Circuit

Applications

Low Voltage Halogen Replacement
Low Voltage General Illumination
Automotive/Decorative LED Lighting
Signs/Emergency Lighting

Design Notes

Channel-to-channel current matching sets backlight uniformity; check the matching spec at the current you will actually run.
In boost topologies the OVP threshold must clear the worst-case forward voltage of the longest string, including temperature and binning spread.
Keep PWM dimming above 200 Hz to stay clear of visible flicker, and away from the audio band if the product has a speaker.
Size the inductor and output capacitor for the string current ripple, not the total LED current.