AS3645 austriamicrosystems, AS3645 Datasheet - Page 24

• Manufacturer Part Number: AS3645
• Description: 1000/720ma Ultra Small High Efficient Single/dual Led Flash Driver With Safety Features
• Manufacturer: austriamicrosystems

AS3645
Datasheet - D e t a i l e d D e s c r i p t i o n
Table 12.
Table 13.
1. Write 55h to register 0Fh (Password) before changing this register bit; when setting boost_current=1 also set
Table 14.
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led_det_on=0, led_amount=0 to disable led amount detection.
7:0
Bit
Bit
Bit
2
3
4
5
6
7
0
Fault
Boost
Password
Addr: Dh
Addr: Fh
Addr: 5
Register (Continued)
Register
fault_overtemp
fault_led_short
boost_current
fault_timeout
fault_ind_led
led_amount
Bit Name
Bit Name
Bit Name
password
fault_ovp
Register
1
Default Access
Default Access
Default Access
This register is the password protection for writing to the
This register identifies all the different fault conditions and provide
0
1
0
0
0
0
0
0
R/W
W
R
R
R
R
R
R
Revision 1.6
This register can boost the flash current
information about the LED detection
Write 01010101b (55h) to this register to unlock the
0
1
0
1
0
1
0
1
0
1
0
1
0
1
see
see
register for the next I
see
Indicator LED open/short Detection on page 11
An overvoltage condition is detected (pin VOUT)
Junction temperature limit has been exceeded
see
Password
see
A shorted LED is detected (pin LED_OUT)
Overtemperature Protection on page 11
Boost
Single/Dual LED Detection on page 12
Fault
Single LED detected (pin LED_OUT)
Short Circuit Protection on page 11
Overvoltage Protection on page 11
see
Dual LED detected (pin LED_OUT)
Normal flash current (up to 500mA)
see
Indicator LED (pin IND_OUT) fault
Register
Flash Timeout on page 11
Register
flash_current on page 22
Flash timeout exceeded
Register
Double flash current
Description
Description
Description
2
No fault
No fault
No fault
No fault
No fault
C write command only
Boost
register
Boost
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