TI white LED driver enhanced camera phone flash power supply

TI LED driver enhanced camera flash on mobile phone, TI (TI) launched a new generation of mobile phone camera can be used for PDA and high power light emitting diode (LED) power conversion chip. This integrated circuit (IC) can help improve the brightness of the flash to obtain a higher quality image. For more details, please visit: www.ti.com/sc05219.

Through optimization, TPS61059 single white LED driver TI to the strength of the current safety input voltage range in a single lithium battery effectively support 800mA. The device is based on 650kHz fixed frequency pulse width modulation (PWM) controller, can achieve the highest efficiency of 80%. In order to further extend battery life, the TPS61059 can be disabled, and enter power mode -- the mode can stop LED power supply, the current consumption is reduced to less than 1 A. Built in pre charge and soft start circuit can prevent the formation of excessive current during startup. In addition, TPS61059 open circuit, short circuit and overheating protection function can also protect LED.

For xenon flash IC digital camera

In addition to TPS61059 converter, TI for xenon lamp using digital camera in a new flash capacitor charger TPS65552A with integrated IGBT driver. Compared with the discrete device solutions, the device occupies only half of the board space, and can quickly charge the 50V capacitor by using the optimized PWM control algorithm. TPS65552A support 1.8V ~ 12V input voltage, and programming can provide 0.95A to 1.8A peak current. It also provides over temperature monitoring, charging and flash enable input signals, and the charging completion status output signal. For more details, please visit: www.ti.com/sc05219b.

Digital camera integrated power supply

TI also launched TPS65520, an integrated 13 channel power management IC can meet all the needs of current power supply of digital camera, but also can reduce the number of external components required. The device incorporates 7 DC/DC converters, DC/DC controllers, and 5 linear low dropout (LDO) regulators with an integrated power switching tube. TPS65520 can support 1.5V ~ 5V input voltage, which aims to achieve a fully realized solution is very flexible programming of I2C serial interface and can be compared with similar functions, discrete implementation can significantly reduce the board space. For more details, please visit: www.ti.com/sc05219c.

Price and availability

Three power source IC is now available in volume, can be ordered through TI and its authorized dealers. TPS61059 uses a 10 pin 3 3 mm QFN small package, batch 1000, priced at $0.95. TPS65552A uses a 10 pin MSOP package, when the bulk is $1000, $1. TPS65520 power management unit for digital camera using 8 8 mm BGA package, batch 1000, priced at $3.95. For access to the evaluation board, application manual and TI online power management product selection tool, please visit: power.ti.com.