BQ24152 Datasheet, PDF (28/38 Pages) Texas Instruments – Fully Integrated Switch-Mode One-Cell Li-Ion Charger with Full USB Compliance and USB-OTG Support

bq24152
SLUS847 – JUNE 2008 ...................................................................................................................................................................................................... www.ti.com
Sr
t_fDA
t_rDA
Sr P
SDAH
t_SU;STA
t_HD;DAT
t_HD;STA
t_SU;DAT
t_SU;STO
SCLH
t_rCL1
t_fCL1
(1)
t_HIGH t_LOW
= MCS current source pull-up
t_rCL1
t_{LOW tHIGH}
t_rCL1
(1)
= R_P resister pull-up
Figure 33. Serial Interface Timing for HS Mode
REGISTER DESCRIPTION
BIT
B7 (MSB)
B6
B5
B4
B3
B2
B1
B1 (LSB)
Table 5. Status/Control Register (Read/Write)
Memory Location: 00, Reset State: x1xx 0xxx
NAME
TMR_RST/OTG
EN_STAT
STAT2
STAT1
BOOST
FAULT_3
FAULT_2
FAULT_1
READ/WRITE
Read/Write
Read/Write
Read Only
Read Only
Read Only
Read Only
Read Only
Read Only
FUNCTION
Write: TMR_RST function, write "1" to reset the safety timer (auto clear)
Read: OTG pin status, 0-OTG pin at Low level, 1-OTG pin at High level
0-Disable STAT pin function, 1-Enable STAT pin function (default 1)
00-Ready, 01-Charge in progress, 10-Charge done, 11-Fault
1-Boost mode, 0-Not in boost mode
Charge mode: 000-Normal, 001-VBUS OVP, 010-Sleep mode, 011-Poor input
source or VBUS < UVLO, 100-Battery OVP, 101-Thermal shutdown, 110-Timer
fault, 111-No battery
Boost mode: 000-Normal, 001-VBUS OVP, 010-Over load, 011-Battery voltage
is too low, 100-Battery OVP, 101-Thermal shutdown, 110-Timer fault, 111-NA
BIT
B7 (MSB)
B6
B5
B4
B3
B2
B1
Table 6. Control Register (Read/Write)
Memory Location: 01, Reset State: 0011 0000 (30H)
NAME
Iin_Limit_2
Iin_Limit_1
VLOWV_2 ⁽¹⁾
VLOWV_1 ⁽¹⁾
TE
CE
HZ_MODE
READ/WRITE
Read/Write
Read/Write
Read/Write
Read/Write
Read/Write
Read/Write
Read/Write
FUNCTION
00-USB host with 100-mA current limit, 01-USB host with 500-mA current limit,
10-USB host/charger with 800-mA current limit, 11-No input current limit
(default 00)
200-mV weak battery voltage threshold (default 1)
100-mV weak battery voltage threshold (default 1)
1-Enable charge current termination, 0-Disable charge current termination
(default 0)
1-Charger is disabled, 0-Charger enabled (default 0)
1-High impedance mode, 0-Not high impedance mode (default 0)
(1) The range of the weak battery voltage threshold (V_(LOWV)) is 3.4 V to 3.7 V and step of 100 mV (default of 3.7 V).
28
Submit Documentation Feedback
Copyright © 2008, Texas Instruments Incorporated
Product Folder Link(s): bq24152