SEMICO NDUC TORS

DESCRIPTION

The ZXSC440 is a dedicated photoflash charger,

charging an 80 F photoflash capacitor to 300V in 3.5

seconds from a 3V supply.

The flyback conversion efficiency is typically 75%,

much higher than the commonly used discrete

charging circuits.

The Charge pin enables the circuit to be initiated from

the camera's microprocessor, using negligible current

when flash is not being used.

FEATURES

3.5 seconds from 3V

The Ready pin signals the microprocessor when the

flash is charged and ready to be fired.

A small amount of hysteresis on the voltage feedback

shuts down the device as long as the capacitor remains

fully charged, again using negligible current.

APPLICATIONS

ZXSC440

ISSUE 1 - JANUARY 2005

PHOTOFLASH CHARGER

1

PINOUT

MSOP8 pin TOP VIEW

TYPICAL APPLICATION CIRCUIT

DEVICE

DEVICE DESCRIPTION

TEMPERATURE RANGE

PART

MARK

TAPING

OPTIONS

ZXSC440X8TA

Camera flash charger

-40°C to +85°C

ZXSC440

TA, TC

ZXSC440X8TC

ORDERING INFORMATION