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ZXSC420E6TA, ZXSC440, ZXSC440X8

Table of contents:
Info of ZXSC420E6TA
Info of ZXSC440
Info of ZXSC440X8

ZXSC420E6TA, ZXSC440, ZXSC440X8 Selling Leads, Datasheet

MFG:ZETEX Package Cooled:zetex D/C:dc0306

ZXSC420E6TA, ZXSC440, ZXSC440X8 Datasheet download

Five Points

Part Number: ZXSC420E6TA

MFG: ZETEX

Package Cooled: zetex

D/C: dc0306

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ZXSC440 General Description

The ZXSC440 is a dedicated photoflash charger, charging an 80F 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.

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.

ZXSC440 Maximum Ratings

PARAMETER	LIMIT	UNIT
V_CC	-0.3 to +10	V
DRIVE	-0.3 to V_CC + 0.3	V
READY	-0.3 to V_CC + 0.3	V
CHARGE	-0.3 to The lower of (+5.0) or (V_CC +0.3)	V
VFB, SENSE	-0.3 to The lower of (+5.0) or (V_CC +0.3)	V
Operating temperature	-40 to +85	°C
Storage temperature	-55 to +150	°C
Power dissipation at 25°C	450	mW

ZXSC440 Features

• Charges a 80F photoflash capacitor to 300V in 3.5 seconds from 3V
• Charges various value photoflash capacitors
• Over 75% flyback efficiency
• Charge and Ready pins
• Consumes only 4.5A when not charging
• Small MSOP8 low profile package

ZXSC440 Typical Application

• Digital camera flash unit
• Film camera flash unit

ZXSC440 Connection Diagram

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