Datasheet

OC & UV_DELAY: Overcurrent and Undervoltage Delay Register
bq77PL900
SLUS844B – JUNE 2008 – REVISED JANUARY 2009 ...................................................................................................................................................... www.ti.com
OC & UVDELAY REGISTER (0x08)
7 6 5 4 3 2 1 0
UVD3 UVD2 UVD1 UVD0 OCD3 OCD2 OCD1 OCD0
The FUNCTION and OCDV CFG register determines overcurrent in discharge voltage threshold and controls
functions.
OC & UV_DELAY b3 – b0 (OCD3 – 0) configuration bits with corresponding voltage threshold. Resolution is 5 mV.
0x00 10 mV 0x04 30 mV 0x08 50 mV 0x0c 70 mV
0x01 15 mV 0x05 35 mV 0x09 55 mV 0x0c 75 mV
0x02 20 mV 0x06 40 mV 0x0a 60 mV 0x0e 80 mV
0x03 25 mV 0x07 45 mV 0x0b 65 mV 0x0f 85 mV
OC & UVDELAY b7 – hb4 (UVD3 – 0) configuration bits with corresponding delay time for undervoltage with a
default of 000. Resolution is 1 s when the FS bit = 0.
OC & UVDELAY FS bit (OUTPUT_CONTROL b7 )
b7-b4 (UVD3-0)
1 0
0x00 See the following table. 1 s
0x01 2 s
0x02 3 s
0x03 4 s
0x04 5 s
0x05 6 s
0x06 7 s
0x07 8 s
0x08 1 s 1 s
0x09 2 s 2 s
0x0a 3 s 3 s
0x0b 4 s 4 s
0x0c 5 s 5 s
0x0d 6 s 6 s
0x0e 7 s 7 s
0x0f 8 s 8 s
DELAY TIME (ms), FS = 1
UVD < 3:0 > Internal Count
5 Cells 6 Cells 7 Cells 8 Cells 9 Cells 10 Cells
0x00 0 0 0 0 0 0 0
0x01 2 1.25 1.5 1.75 2 2.25 2.5
0x02 4 2.5 3 3.5 4 4.5 5
0x03 8 5 6 7 8 9 10
0x04 10 6.25 7.5 8.75 10 11.25 12.5
0x05 12 7.5 9 10.5 12 13.5 15
0x06 16 10 12 14 16 18 20
0x07 24 15 18 21 24 27 30
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