AT1454 Datasheet | Aimtron Technology

Feature - 2.5V to 5.5V Supply Voltage Operating - - - - - - - - - - - Range. Low Current Consumption:1m A in operation. Adjustable Output Voltage. Adjustable Switch On-Time. Charge plete Indicator. Built-in IGBT Driver. Soft-Start Circuitry. Thermal Protection Charges Any Size Photoflash Capacitor. AT1454 with Auto-Refresh Function. AT1454A/B without Auto-Refresh Function. Small 10-lead MSOP Package. Description The AT1454 series is a charger IC for Photoflash capacitor with soft-start function, an IGBT driver for igniting flash tube, adjustable output voltage and adjustable switch on-time to perform energy transition on each charge cycle. The output voltage can be adjusted by simply changing the turn ratio of transformer. AT1454B is sensed by voltage divider connecting to the anode of the rectifying diode. The voltage sensing path is cut off when charging function to be pleted to maintain minimum output voltage decay. The device allows user to control automatic refresh rate on Charge pin. While the Ready pin signals that the capacitor is fully charged. AT1454/AT1454A/AT1454B MSOP-10 package. is available in Application - Digital / Film Camera Flash - PDA / Cell Phone Flash. Block Diagram Aimtron reserves the right without notice to change this circuitry and specifications. 7F, No.9,PARK AVENUE. II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C. Tel: 886-3-563-0878 Fax: 886-3-563-0879 : http://.aimtron..tw 3/24/2006 REV:1.2 Email: service@aimtron..tw 1 AT1454/AT1454A/AT1454B Preliminary Product Information Photoflash Capacitor Charger for DSC Pin Configuration 1 0 1 2 3 4 5 Ordering Information Part number AT1454M_GRE AT1454AM_GRE AT1454BM_GRE Package MSOP-10 , Green MSOP-10 , Green MSOP-10 , Green Marking AT1454, Date code with one bottom line AT1454A, Date code with one bottom line AT1454B, Date code with one bottom line - For more marking information, contact our sales representative directly Pin Description Pin N0. Symbol 1...