ams AS3636-ZWLT-500

Description
The AS3636 is a highly integrated photoflash charger that includes an IGBT driver, inductive DCDC boost autofocus/video LED driver, an indicator LED driver, system level ESD protection, and a breakable fuse. It features adjustable recharge timings, current limits, and an in-production trimmable end of charge voltage. The AS3636 also includes flash timeout, over- and undervoltage, overtemperature, and LED short circuit protection functions. To reduce production test time, a broken transformer or coil is detected. The device is controlled by an I²C interface with a dedicated STROBE input. Additionally, the TORCH input controls the torch function. An interrupt output is available to signal an error condition to the controller. The AS3636 includes 11 Bytes EEPROM and an automatic life time counter to count the number of flashes performed.

Features
Xenon driver with adjustable recharge timings, current limits, in-production trimmable end of charge voltage, and photosensor support
IGBT driver with trimmable IGBT voltages, trimmable IGBT driving waveform, internal flash duration timer, and external STROBE input
DCDC boost converter with autofocus/video LED current source, voltage supply for IGBT, integrated one time breakable fuse in supply path, and integrated system level ESD protection according to IEC-61000-4-2 Level 4 (8kV contact, 15kV air discharge)
Available in tiny WL-CSP packages (4x4 balls 0.5mm pitch, 2.0 x 2.15 x 0.6 mm)

Applications
Xenon flash with LED torch for mobile phones