Datasheet > MP2489

MP2489

更新时间： 2024-11-16 01:14:15

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描述
Step Down White LED Driver with Wide 6V.60V Input Voltage

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MP2489 数据手册

MP2489

Step Down White LED Driver with

–

Wide 6V 60V Input Voltage

The Future of Analog IC Technology

DESCRIPTION

FEATURES

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.

•

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

The MP2489 employs hysteretic control

architecture to regulate a high accuracy LED

current, which is measured through an external

high-side current sensing resistor. Moreover,

this control scheme provides optimized circuit

stabilization and very quick response time

without the loop compensation. Its low 202mV

average feedback voltage reduces power loss

and improves the converter efficiency.

Available in TSOT23-5, QFN6(3x 3mm) and

SOIC8E Packages

APPLICATIONS

The MP2489 implements PWM and analog

dimming together with DIM pin.

•

Low Voltage Halogen Replacement

Low Voltage General Illumination

Automotive/Decorative LED Lighting

Signs/Emergency Lighting

The MP2489 includes thermal overload

protection preventing damage in the event of an

output overload.

LED Backlighting

The MP2489 is available in small QFN6 (3x

3mm), TSOT23-5 and SOIC8E packages.

All MPS parts are lead-free and adhere to the RoHS directive. For MPS green

status, please visit MPS website under Quality Assurance. “MPS” and “The

Future of Analog IC Technology” are Registered Trademarks of Monolithic

Power Systems, Inc.

TYPICAL APPLICATION

V_IN

R_SENSE

C_IN

MP2489

EN/DIM

GND

MP2489 Rev. 1.23

10/11/2012

www.MonolithicPower.com

MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.

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