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1.2-2

17 - 26

AS3642

Datasheet - D e ta i l e d D e s c r i p t i o n

7:6

flash_current

10

R/W

Define the current on pin LED_OUT in flash mode if

current_mode=00 or 10

00

01

10

11

7:3

current

16h

R/W

Define the current on pin LED_OUT for flash and assist

mode (mode=10 or 11) if current_mode=01 or 11

current_mode =

01

11

15.6mA

31.25mA

46.875mA

...

1F

500mA

1. Before changing current_mode register, write 0xA1 to register 0x80h (password protection). This sequence is

added to protect the flash LED against unintentional high currents for flash systems designed only up to

320mA.

Additionally do not change this register if the DCDC is operating.

2. For currents above 320mA, the AS3642 will always enable pulseskip mode (register setting of freq_switch_on

has no effect)

Addr: 2

This register defines the Current Settings

Bit

Bit Name

Default Access

Description