The CAT4237 is a high voltage CMOS constant-current DC/DC converter that has been designed to drive with high efficiency white or other high brightness LEDs. The high-voltage output stage allows driving up to 8 white LEDs in series. A single external resistor sets the LED current between 5mA and 30mA. LED current can be adjusted using either a pulse width modulated (PWM) signal or a DC voltage. Detailed descriptions and electrical characteristics are in the CAT4237 data sheet. The evaluation board contains a CAT4237 DC-DC boost converter and an array of white LEDs. As configured, the board circuit is set to drive up to 8 white LEDs in series. The user can chose to connect the CAT4237 output to the LEDs string available on board or to an external LEDs string from an application.
评估板 | 状况 | 无铅(Pb-free) | 简短说明 | 所用产品 |
---|---|---|---|---|
CAT4237BEVB | Active | EVAL BOARD | CAT4237TD-GT3 |
类型 | 文档标题 | 文档编号 | 修订号 |
EVAL BOARD: BOM | CAT4237BEVB Bill of Materials ROHS Compliant | CAT4237BEVB_BOM_ROHS.PDF | 0 |
EVAL BOARD: Gerber | CAT4237BEVB Gerber Layout Files (Zip Format) | CAT4237BEVB_GERBER.ZIP | 0 |
EVAL BOARD: Schematic | CAT4237BEVB Schematic | CAT4237BEVB_SCHEMATIC.PDF | 0 |
EVAL BOARD: Test Procedure | CAT4237BEVB Test Procedure | CAT4237BEVB_TEST_PROCEDURE.PDF | 0 |
EVAL BOARD: Manual | CAT4139 LED Driver Evaluation Board User's Manual | EVBUM2017/D - 178.0 KB | 3 |