Datasheet

TPS60250
TPS60252
www.ti.com ............................................................................................................................................................ SLVS769C – APRIL 2007 – REVISED APRIL 2008
Aux Output Brightness and Operation Mode Control Register (Address: 0x03h)
AUX DISP
B7 B6 B5 B4 B3 B2 B1 B0
CURRENT
BIT NAME Iaux5 Iaux4 Iaux3 Iaux2 Iaux1 Iaux0 Mode1 Mode0
Bits 7 - 2 (DM5 set to Main Display Mode)
Iaux5 - Iaux0 (total 64 steps)
6-Bit command (64 steps) to these bits sets the current for DM5.
For LED currents between 0 and 1.5 mA, one step = 0.1mA increment
For LED currents between 1.5 and 25.5 mA, one step = 0.5 mA increment
Bits 7 - 2 (DM5 set to Aux Display Mode)
Iaux5 Iaux4 Iaux3 Iaux2 Iaux1 Iaux0 Aux Dimming
(B7) (B6) (B5) (B4) (B3) (B2) Step
X X X X 0 0 20%
X X X X 0 1 40%
X X X X 1 0 70%
X X X X 1 1 100%
Bits 1,0 Mode1, Mode0
Mode1 Mode0
TPS60250/2 Mode
(B1) (B0)
0 0 Auto-Switchover Mode. The TPS60250/2 select
1 × /1.5 × mode as described in the Operating Principle
section.
0 1 1 × Mode. TPS60250/2 remain in 1 × mode regardless
of the input voltage. LED current may not regulate at
lower input voltages when in this mode.
1 0 1.5 × Mode. TPS60250/2 remain in 1.5 × mode
regardless of the input voltage.
1 1 Auto-Switchover Mode. The TPS60250/2 select
1 × /1.5 × mode as described in the Operating Principle
section.
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