Smart Photoflash Capacitor Charger with IGBT Driver
The RT9591 is a highly integrated photoflash charging
solution in digital and film cameras. It is targeted for
applications that use either two AA batteries or a single
The RT9591 integrates a constant current controller for
charging high voltage photoflash capacitor quickly and
efficiently, an IGBT driver for igniting flash tube, and a
voltage detector. Only a few external components are
used to reduce PCB space and cost.
RT9591 is available in VQFN-16L 3x3 package.
QV : VQFN-16L 3x3 (V-Type)
Operating Temperature Range
P : Pb Free with Commercial Standard
RichTek Pb-free products are :
`RoHS compliant and compatible with the current require-
ments of IPC/JEDEC J-STD-020.
`Suitable for use in SnPb or Pb-free soldering processes.
`100% matte tin (Sn) plating.
For marking information, contact our sales representative
directly or through a RichTek distributor located in your
area, otherwise visit our website for detail.
z 1.8V to 6.5V Battery Input Voltage Range
z Charges Any Size Photoflash Capacitor
z Adjustable Input Current
z Uses Standard Transformers
z Adjustable Output Voltage
z Charge Complete Indicator
z Built-in IGBT Driver for IGBT Application
z Built-in Voltage Detector
z 16-Lead VQFN Package
z RoHS Compliant and 100% Lead (Pb)-Free
z Digital Still Camera
z Film Camera Flash Unit
z Camera Phone Flash
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DS9591-04 November 2005