ADP5350ACBZ-1-R7 datasheet(49/63 Pages) AD

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Data Sheet

ADP5350

Rev. B | Page 49 of 63

Bit No.

Mnemonic

Access

Default

Description

EN_BL

R/W

The grouped backlight enable signal.

0 = disable the grouped backlight.

1 = enable the grouped backlight.

Table 58. BST_CFG, Register Address 0x27 Bit Descriptions

Bit No.

Mnemonic

Access

Default

Description

BST_MODE

R/W

This bit sets the boost regulator operation mode.

0 = LED operation mode.

1 = boost standalone operation mode.

BST_BL

R/W

This bit configures the boost regulator to provide the bias voltage to

all active LED channels or only to the active LED backlight channels.

(effective only when the boost regulator is configured in LED

operation mode).

0 = set the boost regulator to provide the bias voltage for all active

LED channels. In this configuration, the boost regulator provides the

adaptive headroom regulation according to all active LED current

sources.

1 = set the boost regulator to provide the bias voltage only to the

active LED backlight channels.

FOVR

R/W

This bit configures the override feature in the backlight fade in and

fade out.

0 = the fade in and fade out override is disabled.

1 = the fade in and fade out override is enabled.

Not used

Not used.

[3:2]

BST_OVP

R/W

This bit sets the overvoltage threshold in the boost output voltage in

VOUT4 pin.

00 = 18.5 V.

01 = 15 V.

10 = 10 V.

11 = 5.6 V.

Not used

Not used.

BST_IPK

R/W

This bit sets the peak current limit for boost regulator.

0 = 600 mA peak current limit.

1 = 300 mA peak current limit.

Table 59. IBL_SET, Register Address 0x28 Bit Descriptions

Bit No.

Mnemonic

Access

Default

Description

[7:6]

Not used

Not used.

[5:0]

IBL[5:0]

R/W

000000

These bits set the LED current setting for the grouped backlight

(LED1). All grouped backlight LED channels follow this current

setting. A square law algorithm for 64 levels is used.

000000 = 0 mA.

000001 = 0.005 mA.

000010 = 0.020 mA.

…

111101 = 18.750 mA.

111110 = 19.370 mA.

111111 = 20 mA.

ADP5350ACBZ-1-R7 Datenblatt(PDF) 49 Page - Analog Devices

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