BQ24721 Datasheet, PDF (34/48 Pages) Texas Instruments – ADVANCED MULTI-CHEMISTRY AND MULTI-CELL SYNCHRONOUS SWITCH-MODE CHARGER AND SYSTEM POWER SELECTOR

bq24721
SLUS683 – NOVEMBER 2005
SBS-Like SMBus: Commands Implemented: Input Current DAC Register
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Input Current, (0x3F), Write/Read⁽¹⁾
BIT
0 (LSB)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15 (MSB)
SBS SPEC
1 mA
2 mA
4 mA
8 mA
16 mA
32 mA
64 mA
128 mA
256 mA
512 mA
1024 mA
2048 mA
4096 mA
8192 mA
16384 mA
32768 mA
bq24721 SBS-Like
NA
NA
NA
NA
NA
NA
NA
128 mA (1.28 mV)
256 mA (2.56 mV)
512 mA (5.12 mV)
1024 mA (10.24 mV)
2048 mA (20.48 mV)
4096 mA (40.96 mV)
8192 mA (81.92 mV)
NA
NA
NOTES
Input DPM current limit setting
16384 mA max
(162.56 mV max)
(1) Note: Shunt drop voltage shown at LO/HI bit state;
DAC current value is based on using 10 mΩ sense resistor.
Max input current with 10 mΩ sense resistor is 16.256 A.
Bit 13 allows using larger sense resistors for increasing accuracy in low input current applications.
• Valid input currents are 0 A–16.256 A using a 10 mΩ sense resistor. Minimum step is 128 mA.
• Programmed input currents above max 16.256 A → Charger is enabled and the current regulation value is
set to the maximum 16.256 A.
• Programmed input current = 0 A → Charger is disabled.
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