AS3636 Datasheet, PDF (1/42 Pages) ams AG – Photosensor support

AS3636
Preliminary Datasheet, Confidential
Xenon Driver IC with LED Driver and Life Time Counter
1 General Description
The AS3636 is a highly integrated photoflash charger
including IGBT driver, inductive DCDC boost autofocus/
video LED driver, an indicator LED driver and it includes
system level ESD protection and a breakable fuse.
The AS3636 includes flash timeout, over- and undervolt-
age, overtemperature and LED short circuit protection
functions. To reduce production test time a broken trans-
former or a broken coil is detected.
The AS3636 is controlled by an I²C interface with a ded-
icated STROBE input. Additionally the TORCH input
controls the torch function. An interrupt output is avail-
able to signal an error condition to the controller.
The device includes 11 Bytes EEPROM, and an auto-
matic life time counter to count the number of flashes
performed.
The AS3636 is available in a space-saving WL-CSP
package and operates over the -30ºC to +85ºC tempera-
ture range.
Warning: Lethal voltages are present on applications
using AS3636! Do not operate without train-
ing to handle high voltages.
Figure 1. AS3636 Typical Operating Circuit
2 Key Features
Xenon driver
- Adjustable recharge timings
- Adjustable current limits
- In-production trimmable end of charge voltage
- Photosensor support
IGBT Driver
- Trimmable IGBT voltages
- Trimmable IGBT driving waveform
- Internal flash duration timer
- External STROBE input
DCDC Boost Converter
- Autofocus/video LED current source
- Voltage supply for IGBT
Integrated one time breakable fuse in supply path
Integrated system level ESD protection according to
IEC-61000-4-2 Level 4 (8kV contact, 15kV air dis-
charge)
Available in tiny WL-CSP Packages
4x4 balls 0.5mm pitch,
2.0 x 2.15 x 0.6 mm
3 Applications
Xenon Flash with LED Torch for mobile phones
 


  



 
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with additional features
Revision 0.7
with photosensor
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