MP1519L

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Charge Pump 3-Channel WLED Driver



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Product Description

The MP1519L is a fully automatic driver for powering three white LEDs, with up to 4V forward voltage, from a single Li-Ion or three NiMH cells. The driver performs all of the sensing and control to run the LEDs at an optimum charge pump ratio for efficiency without an expensive inductor. The driver allows PWM operation to support brightness control. The tiny 3mm x 3mm QFN16 package and small external capacitors allow for the most compact white LED solution available.

Product Features

  • 2% LED Current Matching
  • High Efficiency (>93%)
  • Current Source Outputs
  • No Ballast Resistors Required
  • 1x, 1.5x and 2x Automatic Modes
  • Constant Frequency Operation
  • Automatic LED Detection
  • High and Low Frequency PWM Capability
  • 2.5V to 5.5V Operation
  • Less than 1μA Leakage during Shutdown
  • Detects Changes in Battery Level
  • No External Schottky Diode Required
  • Soft-Start and Soft Switching Operation

Parametrics

  • Ishutdown (µA)0.1
  • Vin (min) (V)2.5
  • Vin (max) (V)5.5
  • Channels3
  • fsw (min) (kHz)1300
  • fsw (max) (kHz)1300
  • Vout (max) (V)10
  • GradeCatalog
  • 封装QFN-16 (3x3), TQFN-16 (3x3)
  • TopologyCharge Pump
  • Dimming (Output)P-Dim, A-Dim
  • Typical LCD Screen SizesSmall (<10")