Mikroe Mikroe-2807 LED Driver 2 Click板
MikroElektronika Mikroe-2807 LED驱动器2 Click板配有LED恒流稳压器MCP1643。该款LED驱动器设有3W大功率LED，以及可对该LED进行调光的选项。Mikroe-2807 Click板具有较高的恒定电流驱动能力，以及针对输出电压的过压保护特性。该款LED驱动器重25g，具有过热保护特性，并可将输出电压限制在5V。Mikroe-2807 click板非常适合用于便携式LED照明产品、手电筒、前照灯、可充电手电筒以及通用LED恒流应用。
The onboard VIN SEL SMD jumper offers the selection of the input voltage source: it can be set to use a two-cell NiMH battery connected to VIN terminal (2.4V), or the power supply pin from the mikroBUS™. The voltage from the mikroBUS™ can be set with the VCCIO SMD jumper to either 5V or 3.3V. Since the forward voltage on the high power LED is 3.2V, the click board comes equipped with the MCP1826, an LDO regulator by Microchip, which is used to drop the selected mikroBUS™ voltage down to around 2.4V so that the MPC1643 input voltage requirements are met.
特性
- MCP1643 Synchronous Boost LED Regulator
- 1.6A typical peak input current limit
- Up to 550mA LED load current
- Dimming control by variable duty cycle
- Overvoltage protection
- Overtemperature protection
- Selectable input voltage of 3.3V or 5V
- Click board size L (57.15mm x 25.4mm)
应用
- Portable LED lighting products
- LED flashlights and headlamps
- Rechargeable flashlights
- General LED constant current applications
资源
视频
On The Board
Microchip Technology MCP1643 1MHz同步升压LED恒流稳压器
经优化可驱动一个恒定电流LED或两个红光/绿光/黄光的串联LED。
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Board Layout
