AT1450 Datasheet | Aimtron Technology

Features - 2.5 to 13 V supply voltage operating range. - Low current consumption: 6 m A in operation, - 20 k Hz to 1 MHz operation frequency range. - Provides a fixed output current with minimal supply voltage fluctuations by using an external resistor to set the output current. - Totem-pole output. - Built-in soft start circuit. - Built-in auto-discharge function. General Description The AT1450 is a single-channel PWM control IC for Photoflash capacitor charger with soft start function and auto-discharge circuit. Adjustable soft start is programmed with an external capacitor on SS pin. Applications - Digital Still Cameras flash unit Block Diagram Aimtron reserves the right without notice to change this circuitry and specifications. 2F, No.10, Prosperity RD. II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C. Tel: 886-3-563-0878 : http://.aimtron..tw Fax: 886-3-563-0879 Email: service@aimtron..tw 1 Preliminary Product Information Photoflash Capacitor Charger for DSC Pin Configuration Ordering Information Part number AT1450S AT1450S_Green Package SOP8 SOP8,Green Marking AT1450S AT1450S, date code with one bottom line Pin Description Pin No. Symbol I/O Description 1 2 3 4 5 6 7 8 INSS VCC BR/CTL OUT GND OSC FB - - I O - - O Error amplifier inverting input Soft start setting capacitor connection Power supply Output current setting Totem-pole type output Ground Capacitor and resistor connection pin for setting the oscillation frequency Error amplifier output 2F, No.10, Prosperity RD. II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C. Tel: 886-3-563-0878 : http://.aimtron..tw Fax: 886-3-563-0879 Email: service@aimtron..tw 2 Preliminary Product Information Photoflash Capacitor Charger for DSC Absolute Maximum Ratings (Ta=+250C) Parameter Power supply voltage Output source current Output sink current Allowable dissipation Operating temperature Storage temperature ESD Classification Symbol VCC IO+ IOPD PD TOP...