The TB62732FU is a LED driver with a high efficiency step-up DC-DC converter that can turn on 2-4 serial white LEDs. It features an NchMOS FET transistor to switch the coil and a function to derate the LED current with temperature rise. The average LED current can be easily set using an external resistor. This IC is ideal for driving LED liquid crystal backlights in PDAs, cell phones, and handheld terminals.
The Toshiba TB62732FU is an integrated circuit silicon monolithic designed specifically as a driver for white LED lighting. It functions as a step-up type DC-DC converter capable of driving two to four serially connected LEDs. The device features a built-in N-channel MOSFET transistor and includes automatic current derating based on temperature rise.
| Maximum output voltage Vo(A) | <= 17V |
|---|---|
| Supply voltage Vcc | 3.0 to 5.5V |
| Switching frequency fOSC | 1.0 MHz (typ) |
| MOS-Tr on resistance Ron | 2.0 ohms (typ) |
| Operation temperature Topr | -40 to +85 degree |
The average LED current can be easily set by connecting an external resistance.
The maximum consumption supply current in the standby mode is 1.2 uA.
The device uses an SSOP6 - P - 0.95B package.