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3.20.2. Flashlight Interfaces
SA800U-WF supports 3 flash LED drivers with 2 × 1.5 A + 1 × 0.75 A, and supports both flash and torch
modes. As for FLASH_LED1 and FLASH_LED2, in flash mode, the maximum output current is 0.75 A for
each when the two LEDs work together and 1.5 A for each when they work separately. In torch mode, the
maximum output current is 500 mA for each whether the two LEDs work together or separately. As for
FLASH_LED3, in flash mode, the maximum output current is 0.75 A and in torch mode, the maximum
output current is 500 mA.
Table 27: Pin Definition of Flashlight Interfaces
Pin Name
Pin No.
FLASH_LED1
J4-23, J4-24
FLASH_LED2
J4-20, J4-21
FLASH_LED3
J4-5, J4-6
A reference circuit design is shown below.
Figure 28: Reference Circuit Design for Flashlight Interfaces
SA800U-WF_Hardware_Design
I/O
Description
AO
Flash/torch driver output 1
AO
Flash/torch driver output 2
AO
Flash/torch driver output 3
FLASH_LED1
FLASH_LED2
FLASH_LED3
Module
Smart Module Series
SA800U-WF Hardware Design
Comment
I
= 1.5 A
LED1
I
= 1.5 A
LED2
I
= 0.75 A
LED3
D1
D2
D3
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