MP2489

Active
6V-60V 1A Buck LED Driver with Hysteretic Control ,DC and PWM Dimming Control


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Product Description

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. 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.  The MP2489 implements PWM and analog dimming together with DIM pin.  The MP2489 includes thermal overload protection preventing damage in the event of an output overload.  The MP2489 is available in small QFN6 (3x 3mm), TSOT23-5 and SOIC8E packages.

Product 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
  • Available in TSOT23-5, QFN6(3x 3mm) and SOIC8E Packages

Parametrics

  • Vin (min) (V)6
  • Vin (max) (V)60
  • Vout (max) (V)57
  • Iout (max) (A)1
  • SyncNo
  • Open LED ProtectionYes
  • PackageQFN-6 (3x3)
  • Rds(on) (mΩ)500
  • GradeCatalog
  • TypeLow-Side Buck
  • Vfb (V)0.2
  • fsw (max) (kHz)600
  • Iq (mA)1
  • Ishutdown (µA)65

Evaluation Kit

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Kit details

The EV24892DJ-00A is an evaluation board for the MP24892DJ, a step-down converter designed in continuous current mode for driving the high brightness light emitting diodes (LEDs) from wide input voltage 8V – 45V.

The MP24892 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 200mV average feedback voltage reduces power loss and improves the converter efficiency.

The MP24892 implements PWM and Analog dimming with DIM pin. The MP24892 includes under-voltage lockout function, thermal overload protection preventing damage in the event of an output overload.

$25.00 + tax