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MCP1662 - High-Voltage Step-Up LED Driver

General Description

The MCP1662 device is a compact, space-efficient, fixed-frequency, non-synchronous step-up converter optimized to drive LED strings with constant current from a two- or three-cell alkaline or lithium Energizer®, or NiMH/NiCd, or one-cell Lithium-Ion or Li-Polymer batteries.

Key Features

  • 36V, 800 m Integrated Switch.
  • Up to 92% Efficiency.
  • Drive LED Strings in Constant Current.
  • 1.3A Peak Input Current Limit: - ILED up to 200 mA @ 5.0V VIN, 4 White LEDs - ILED up to 125 mA @ 3.3V VIN, 4 White LEDs - ILED up to 100 mA @ 4.2V VIN, 8 White LEDs.
  • Input Voltage Range: 2.4V to 5.5V.
  • Feedback Voltage Reference: VFB = 300 mV.
  • Undervoltage Lockout (UVLO): - UVLO @ VIN Rising: 2.3V, typical - UVLO @ VIN Falling: 1.85V, typical.

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MCP1662 High-Voltage Step-Up LED Driver with UVLO and Open Load Protection Features • 36V, 800 m Integrated Switch • Up to 92% Efficiency • Drive LED Strings in Constant Current • 1.3A Peak Input Current Limit: - ILED up to 200 mA @ 5.0V VIN, 4 White LEDs - ILED up to 125 mA @ 3.3V VIN, 4 White LEDs - ILED up to 100 mA @ 4.2V VIN, 8 White LEDs • Input Voltage Range: 2.4V to 5.5V • Feedback Voltage Reference: VFB = 300 mV • Undervoltage Lockout (UVLO): - UVLO @ VIN Rising: 2.3V, typical - UVLO @ VIN Falling: 1.