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BD6083GUL
Datasheet
(10) Current adjustment
? When the register setting permits it, PWM drive by the external terminal (WPWMIN) is possible.
Register : WPWMEN
? It is suitable for the intensity correction by external control, because PWM based on Main LED current of register
setup or ALC control.
WPWMEN
(Register)
0
1
WPWMIN(External Pin)
L
H
L
H
Main group LED current
Normal operation
Normal operation
Forced OFF
Normal operation
" Normal operation " depends on the setup of each register.
EN(*)
Internal Soft-Start Time
DC/DC Output
WPWMIN input
WPWMEN
LED Current
EN(*) : it means “MLEDEN” or “W*EN”.
It is possible to make it a WPWMIN input and WPWMEN=1 in front of EN(*).
A PWM drive becomes effective after the time of an LED current standup.
When rising during PWM operation, as for the standup time of a DC/DC output, only the rate of
PWM Duty becomes late. Appearance may be influenced when extremely late frequency and
extremely low Duty are inputted.
Please secure 250 μ s or more of H sections at the time of PWM pulse Force.
Figure 19.
www.rohm.com
? 2012 ROHM Co., Ltd. All rights reserved.
TSZ22111 ? 15 ? 001
34/42
TSZ02201-0G3G0C200100-1-2
05.Oct.2012 Rev.001
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