BC3770 Datasheet, PDF (33/45 Pages) Freescale Semiconductor, Inc – 2.0 A Switch-Mode Charger

5.5.5.10 CHGCTRL1: Charger Control Register 1
Address (hex)
09
Bit
7
6:4
3
2
1:0
Mode
R/W
Name
Reserved
AICLTH
AUTOSTOP
AICLEN
PRECHG
Reset
0
010
1
1
11
Reset Condition:
VSYS V_{SYS_UVLO}
Reset: 0x2F
Description
Write “0”
Program the AICL Threshold on VBUS
0x0: 4.3 V
0x1: 4.4 V
0x2: 4.5 V
0x3: 4.6 V
0x4: 4.7 V
0x5: 4.8 V
0x6: 4.9 V
0x7: 4.9 V
Charger AUTOSTOP Control
0: Charger is on continuously and stays in CV mode after top-off timer is expired.
1: Automatic stop is enabled. After top-off timer is expired, the charger turns off and
goes into DONE state.
Enable/Disable the function of Adaptive-Input Current Limit on VBUS
0: Disable
1: Enable
Program the Pre-charge current in Pre-charge mode
00: 150 mA
01: 250 mA
10: 350 mA
11: 450 mA
5.5.5.11 CHGCTRL2: Charger Control Register 2
Address (hex)
0A
Bit
7:6
5:0
mOde
R/W
Name
Reserved
Reset
00
FASTCHG
00 1000
Reset Condition:
VSYS V_{SYS_UVLO}
Reset: 0x08
Description
Write “00”
Program the fast-charge current I_{FAST_CHG}, in mA
Max current is limited to 2.0 A (all bits above 10 0110 set to 2.0 A)
500 mA Default
I_{FAST_CHG} = [100 mA + Dec. (bit 5:0) * 50 mA] (mA)
i.g: 500 mA= 100 mA + Dec. 8 (Bin 001000) * 50 mA
BC3770
33
Analog Integrated Circuit Device Data
Freescale Semiconductor