BD6086GU_11 ROHM [Rohm], BD6086GU_11 Datasheet - Page 58

• Manufacturer Part Number: BD6086GU_11
• Description: 13LEDs ALC* Flash and Illumination
• Manufacturer: ROHM [Rohm]

● Description of white LED Driver Operations
● RGB LED Driver Operation Description
© 2011 ROHM Co., Ltd. All rights reserved.
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BD6086GU
・ Comprises four lights (WLEDs1-4) for the main driver and three lights (WLEDs5-7) for general-purpose drivers.
・ Permits the main driver to select either a fixed current mode based on a register or an auto light control mode by the
・ Enables a general-purpose driver to designate an independent control mode based on a register and its attribution to
・ Implements control as shown below when main group setting is designated via the W*MD bit.
・ Enables the main group to control PWM via the external terminal so that brightness control can be accomplished from
・ Determines the LED current via a built-in resistance.
・ Two drivers “RGB1 (R1LED, G1LED, B1LED)” and “RGB2 (R2LED, G2LED, B2LED)” are mounted.
・ A slope function is incorporated to control drivers independently.
・ Refer to  RGB Waveform Setting for more information about output waveform setting.
・ RGB2 can be used for GPO (Open drain output) It can be set up in every terminal with the register R2GPO, G2GPO
・ The LED current can be set via a resistance value (RISET) to be connected to the RGBISET terminal.
・ Connection of each LED of RGB can be set up in VBAT or VOUT by the register RGB1PW (1:0) and RGB2PW (1:0).
auto light control module.
the main group in units of terminals. This function makes it possible to assign the drivers easily depending on set
designs such as main 4 LEDs/sub 2 LEDs/indicator 1ch and main 6 LEDs/sub 1 LED.
the outside.
Permits the main group to perform slope processing so that the leading/trailing edge time can be set individually. The
settings made in the registers THL (3:0) and TLH (3:0) are effective regardless of their light control mode (ON/OFF). To
enable instant activation, the minimum value must be set for time.
The maximum current value can be derived from the following expression:
However, this setting must be made so that the maximum current value can be less than or equal to 30.48mA. In
addition, the RGBISET terminal has an overcurrent protection circuit to prevent the excessive LED current from flowing
for low impedance to the ground.
When Vf is low, it is connected to VBAT, and it is possible that efficiency is raised. When a VBAT connection is chosen,
a return route to the DC/DC circuit is interrupted, and it works as a simple constant current driver. In this case, set it up
to be less low than the saturation voltage (0.2V) of the fixed electric current circuit.
and B2GPO.
LED electric current When DC/DC isn't used.
ILEDmax [A] = 3.048 / RISET [kΩ] (Typ)
Current setting:
ON/OFF control:
PWM control:
External synchronization:
RGB*EN
または
RGB*OS
LED 電流
(Max:20ms)
T
on
Operates in conjunction with IMLED(6:0) (IW*(6:0) is discarded.)
Operates in conjunction with MLEDEN. (W*EN is discarded.)
Inputs PWM via the external terminal “WPWMIN.”
Corrects a current value set by IOFS (5:0) in synchronization with the
external terminal “OSYNC.”
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Technical Note
2011.04 - Rev.A