LD7268A Datasheet | Leadtrend

3/10/2005 Photoflash Capacitor Charger for DSC REV: 00 General Description The LD7268A is an ideal charge control IC for flash units with internal soft start, adjustable charging current and output voltage. It provides a proprietary charging algorithm, which charges photoflash capacitor quickly and efficiently. The LD7268A could operate for constant charging current mode or the mode with lowering the charging current at lower battery voltage. As well, a built-in totem pole IGBT driver can drive IGBT quickly and save the board space. The LD7268A is available in a space-saving MSOP-10 package and is ideal for DSC flash unit. Features - Adjustable Charging Current - Adjustable Output Voltage - 1.8V~5V Battery Voltage Range - Internal Soft Start - Tiny Transformer - Totem-Pole IGBT Driver Applications - DSC Flash Unit - Film Camera Flash Unit g Patent pending Typical Application D1 T1 C2 140µF ZD1 300V Vcc C3 1µF 100n F 100K R1 100K READY IGBT GATE Q1: AOS/ AO3402 T1: 10T: 250T, LP=8µH/EFD6.5 CS: 4.7~10n F VCC OUT1 Cs Rs 3.9Ω ISET CHARGE LD7268A...