RT9594A Datasheet, PDF (1/10 Pages) Richtek Technology Corporation – MOSFET Integrated Smart Photoflash Capacitor Charger with IGBT Driver

RT9594A/B
MOSFET Integrated Smart Photoflash Capacitor Charger
with IGBT Driver
General Description
Features
The RT9594A/B are complete photoflash module solutions
for digital and film cameras. They are targeted for
applications that use 2 to 4 AA batteries or 1 to 2 lithium-
ion batteries. The RT9594A/B adopt flyback topology which
use constant primary peak current and zero secondary
valley current to charge photoflash capacitor quickly and
efficiently. The built-in 50V MOSFET allows flexibility in
transformer design and simplifies the PCB layout. The
RT9594A/B also integrate an IGBT driver for igniting
photoflash tube. Only a few external components are
required, which greatly reduces the PCB space and cost.
The RT9594A/B are available in the WQFN-16L 3x3
package.
Ordering Information
RT9594A/B
z 50V MOSFET Integrated
z 1.6V to 9V Battery Input Voltage Range
z Two Charge Current Levels Setting
z Charges Any Size Photoflash Capacitor
z Adjustable Input Current
z Adjustable Output Voltage
z Charge Complete Indicator
z Built-in IGBT Driver for IGBT Application
z Constant Peak Current Control
z 16-Lead WQFN Package
z RoHS Compliant and Halogen Free
Applications
z Digital Still Camera
z Film Camera Flash Unit
z Camera Phone Flash
Package Type
QW : WQFN-16L 3x3 (W-Type)
Pin Configurations
Lead Plating System
G : Green (Halogen Free and Pb Free)
(TOP VIEW)
Note :
VDD : 5V (typ.)
VDD : 3.3V (typ.)
Richtek 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.
16 15 14 13
VBAT 1
12 VDD
CS 2
VDOUT 3
FBVD 4
PGND
17
11 FB
10 STAT
9 AGND
5678
WQFN-16L 3x3
Marking Information
For marking information, contact our sales representative
directly or through a Richtek distributor located in your
area.
DS9594A/B-02 April 2011
www.richtek.com
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