EV2481-H-01A
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The EV2481-H-01A is a Buck-Boost converter evaluation board for the MP2481, a wide input step-up/down converter designed for driving up to 27 white LEDs. The EV board parameters are optimized for the load of 3 white LEDs in series, 9 strings paralleled.
The MP2481 is a 1.2A output, 36V white LED driver suitable for either step-down or inverting step-up/down applications. It achieves 1.2A peak output current over a wide input supply range with excellent load and line regulation. Current mode operation provides fast transient response and eases loop stabilization. Fault condition protection includes thermal shutdown, cycle-by-cycle peak current limiting, open LED protection and output short circuit protection.
The MP2481 incorporates both DC and PWM dimming onto a single control pin. The separate input reference ground pin allows for direct enable and/or dimming control for a positive to negative power conversion.
The MP2481 requires a minimum number of readily available standard external components and is available in 8-pin MSOP8 packages.
Product Features
- Wide 4.5V to 26V Operating Input Range for Inverting Step up/down Applications
- Drives up to 27 White LEDs
- Up to 85% Efficiency
- Analog and PWM Dimming
- Cycle-by-Cycle Over Current Protection
- Thermal Shutdown Protection
- Open Strings Protection
- Input Over Voltage Protection
- Output short circuit protection
Parametrics
- IC Supported 1MP2481
Buck-Boost WLED Halogen Replacement, up to 5W, Open LED protection, Short LED protection
The MP2481 is a 36V,1.2A,white LED driver suitable for either step-down or inverting step up/down applications. It achieves 1.2A peak output current over a wide input supply range with excellent load and line regulation. Current mode operation provides fast transient response and eases loop stabilization. Fault condition protection includes thermal shutdown, cyclebycycle peak current limiting, input over voltage protection, open strings protection and output short circuit protection. The MP2481 incorporates both DC and PWM dimming onto a single control pin. The separate input reference ground pin allows for direct enable and/or dimming control for a positive to negative power conversion.The MP2481 requires a minimum number of readily available standard external components and is available in 8-pin MSOP8 package.
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