ZXSC440 Zetex Semiconductors plc., ZXSC440 Datasheet - Page 3

• Manufacturer Part Number: ZXSC440
• Description: Zxsc440 - Photoflash Charger
• Manufacturer: Zetex Semiconductors plc.

ABSOLUTE MAXIMUM RATINGS
BLOCK DIAGRAM
ISSUE 1 - JANUARY 2005
PIN #
1
2
3
4
5
6
7
8
NAME
DRIVE
V
SENSE
N/C
CHARGE
READY
GND
V
FB
CC
DESCRIPTION
Drive output for external switching transistor. Connect to base or gate of external
switching transistor
Reference voltage. Internal threshold set to 300mV. Connect external resistor
network to set output voltage
Inductor current sense input. Internal threshold voltage set to 28mV. Connect
external sense resistor
Initiate photoflash capacitor charging
Signal to microprocessor when photoflash capacitor charged
Ground
Supply voltage, 1.8V to 8V
3
S E M I C O N D U C T O R S
ZXSC440