LP8501TMXSLASHNOPB datasheet(43/51 Pages) TI1

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LP8501

www.ti.com

SNVS548D – SEPTEMBER 2008 – REVISED AUGUST 2013

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01 = 300 mV

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10 = 200 mV

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11 = 100 mV

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Note: Values above are typical and should not be used as product specification.

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Note: Writing to THRESHOLD [7:6] bits by the user overrides factory settings. Factory settings are not

user accessible.

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76 — Bit [5] — RESERVED

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This bit is reserved for future use. When writing to register 76h, this bit should be written '0'.

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76 — Bits [4:3] — TIMER

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Automatic mode change from 1.5x to 1x is attempted at the interval specified with these bits. After the

specified interval time mode change to 1x is allowed if there is enough voltage over the LED drivers to

ensure proper operation. If FORCE_1x is set to '1' after the specified interval time 1x mode is always

tested.

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00 = 5 ms

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01 = 10 ms

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10 = 50 ms

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11 = infinite. The charge pump switches gain from 1x mode to 1.5x mode only. The gain reset back to

1x is enabled under certain conditions, for example in the powersave mode.

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76 — Bit [2] — FORCE_1x

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Activates forced mode change. In forced mode charge pump mode change from 1.5x to 1x is

attempted at the interval specified with the TIMER bits.

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1 = forced mode changes enabled

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0 = forced mode changes disabled

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