ADP1660

Data Sheet

Rev. 0 | Page 20 of 28

Table 16. Low Battery Mode Enable Register (Register 0x04)

Bits

Bit Name

Access

Description

[7:5]

Reserved

R/W

Reserved.

[4:3]

V_BATT_WINDOW

R/W

These bits set the window size for low battery detection mode.

00 = window disabled; low battery detection is enabled for the entire flash period.

01 = window enabled for 1 ms.

10 = window enabled for 2 ms.

11 = window enabled for 5 ms (default).

[2:0]

V_VB_LO

R/W

These bits enable or disable low battery detection and set the battery voltage level at which

the low battery detection function is enabled.

000 = low battery detection disabled (default).

001 = low battery detection enabled at 3.3 V.

010 = low battery detection enabled at 3.35 V.

011 = low battery detection enabled at 3.4 V.

100 = low battery detection enabled at 3.45 V.

101 = low battery detection enabled at 3.5 V.

110 = low battery detection enabled at 3.55 V.

111 = low battery detection enabled at 3.6 V.

Table 17. Low Battery Mode Current Register (Register 0x05)

Bits

Bit Name

Access

Description

[7:6]

Reserved

R/W

Reserved.

[5:0]

I_VB_LO

R/W

These bits set the flash current value for the low battery voltage setting. The current setting

is equal to the value of these six bits multiplied by 12.5 mA (I_VB_LO × 12.5). The maximum

current value is 750 mA.

00 0000 = 0 mA.

00 0001 = 12.5 mA.

…

00 1000 = 100 mA.

…

01 0100 = 250 mA.

…

10 1000 = 500 mA (default).

…

11 1100 = 750 mA.

…

11 1111 = 750 mA.

Table 18. LED1 Flash Current Register (Register 0x06)

Bits

Bit Name

Access

Description

[7:6]

Reserved

R/W

Reserved.

[5:0]

I_FL1

R/W

These bits set the flash current value for LED1. The current setting is equal to the value of these

six bits multiplied by 12.5 mA (I_FL1 × 12.5). The maximum current value is 750 mA.

00 0000 = 0 mA.

00 0001 = 12.5 mA.

…

00 1000 = 100 mA.

…

01 0100 = 250 mA.

…

10 1000 = 500 mA (default).

…

11 1100 = 750 mA.

…

11 1111 = 750 mA.