TPS65552A

Features:

` Highly Integrated Solution to Reduce Components
` Integrated 50-V Power Switch, R_(ON) = 200 m Typical
` Integrated IGBT Driver
` High Efficiency
` Programmable Peak Current, 0.95 A ~ 1.8 A
` Input Voltage of 1.8 V to 12 V
` Optimized Control Loop for Fast Charge Time
` Sensing All Trigger From Primary Side
` 10-Pin MSOP/16-Pin QFN Package
` Protection
    MAX On Time
    Over V_DS Shutdown
    Thermal Monitor


Application

· Digital Still Cameras (DSC)
· Optical Film Cameras
· Mobile Phones With Camera
· PDAs With Camera


Pinout




Specifications

			UNIT
VSS	Supply voltage	VCC	-0.6 V to 6 V
		VBAT	-0.6 V to 13 V
V(SW)	Switch terminal voltage		-0.6 V to 50 V
Switch current between SW and PGND, ISW			3 A
VI	Input voltage of CHG, I_PEAK, F_ON		-0.3 V to VCC
Tstg	Storage temperature		-40°C to 150°C
TJ	Maximum junction temperature		125°C

Description

TPS65552A offers a complete solution for charging a photo flash capacitor from battery input, and subsequently discharging the capacitor to the xenon tube. The device has an integrated power switch, IGBT driver, and control logic blocks for charge applications. Compared with discreet solutions, the TPS65552A significantly reduces the component count,shrinks the solution size, and eases design com-plexity. Additional advantages are fast charging time and high efficiency due to the optimized PWM control algorithm.

Other provisions of the TPS65552A includes four options for determining a different target voltage, programmable peak current, thermal disable monitor, input signal for charge enable, flash enable, and an output signal for charge completion status.