RT5081
Pin
Connection
Suggestion
When
I2C
Controlled
Part
Pin Name
Pin Description
Pin Type
Unused
Battery over-voltage protection (BAT
OVP) indication, open–drain and
active-low output : Low if BAT OVP
occurs, and High, otherwise.
Output /
Open-Drain
CHG_VBATOVPB
CHG_QONB
No
No
Floating
Floating
Charger
Internal BATFET enable control
input. In shipping mode,
CHG_QONB is pulled Low for the
duration of tQONB_EXIT_SHIP_CHG
(typical 0.9s) to exit shipping mode.
Input /
Active-Low
Input /
Active-High
Short to
ground
FL_TORCH
Flash LED Torch mode enable Input.
Yes
Yes
Flash LED Strobe mode enable
input.
Input /
Active-High
Short to
ground
FL_STROBE
Configurable power amplifier
synchronization input or configurable
active-high torch mode enable.
Connect an internal pull-down
resistor of 400kΩ between
Flash
Input /
Active-High
(Default)
Short to
ground
FL_TXMASK
No
FL_TXMASK and ground.
Input /
Active-High
Short to
ground
BL_EN
Backlight enable control input.
Yes
No
Backlight
Backlight PWM dimming control
input.
Short to
ground
BL_PWM
DB_ENP
DB_ENN
Input
Enable control input for
DB_POSVOUT.
Input /
Active-High
Short to
ground
Yes
Yes
Display
Bias
Enable control input for
DB_NEGVOUT.
Input /
Active-High
Short to
ground
Copyright 2018 Richtek Technology Corporation. All rights reserved.
©
is a registered trademark of Richtek Technology Corporation.
www.richtek.com
12
DS5081-00 January 2018
RICHTEK [ RICHTEK TECHNOLOGY CORPORATION ]
