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BQ24152 Datasheet(PDF) 29 Page - Texas Instruments

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Part No. BQ24152
Description  Fully Integrated Switch-Mode One-Cell Li-Ion Charger with Full USB Compliance and USB-OTG Support
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Maker  TI [Texas Instruments]
Homepage  http://www.ti.com
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BQ24152 Datasheet(HTML) 29 Page - Texas Instruments

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I(TERM0)
O(TERM_STEP)
(SNS)
V
I
=
R
(2)
bq24152
www.ti.com ...................................................................................................................................................................................................... SLUS847 – JUNE 2008
Table 6. Control Register (Read/Write)
Memory Location: 01, Reset State: 0011 0000 (30H) (continued)
BIT
NAME
READ/WRITE
FUNCTION
B1 (LSB)
OPA_MODE
Read/Write
1-Boost mode, 0-Charger mode (default 0)
Table 7. Control/Battery Voltage Register (Read/Write)
Memory Location: 02, Reset State: 0000 1010 (0AH)
BIT
NAME
READ/WRITE
FUNCTION
B7 (MSB)
VO(REG5)
Read/Write
Battery regulation voltage: 640mV (default 0)
B6
VO(REG4)
Read/Write
Battery regulation voltage: 320mV (default 0)
B5
VO(REG3)
Read/Write
Battery regulation voltage: 160mV (default 0)
B4
VO(REG2)
Read/Write
Battery regulation voltage: 80mV (default 0)
B3
VO(REG1)
Read/Write
Battery regulation voltage: 40mV (default 1)
B2
VO(REG0)
Read/Write
Battery regulation voltage: 20mV (default 0)
B1
OTG_PL
Read/Write
1-Active at High level, 0-Active at Low level (default 1)
B1 (LSB)
OTG_EN
Read/Write
1-Enable OTG Pin, 0-Disable OTG pin (default 0)
Charge voltage range is 3.5 V to 4.44 V with the offset of 3.5 V and step of 20 mV (default is 3.54 V).
Table 8. Vender/Part/Revision Register (Read only)
Memory Location: 03, Reset State: 0100 x001
BIT
NAME
READ/WRITE
FUNCTION
B7 (MSB)
Vender2
Read Only
Vender Code: bit 2 (default 0)
B6
Vender1
Read Only
Vender Code: bit 1 (default 1)
B5
Vender0
Read Only
Vender Code: bit 0 (default 0)
B4
PN1
Read Only
Part Number Code: bit 1 (default 0)
B3
PN0
Read Only
Part Number Code: bit 0 (default 0 for bq24151, default 1 for bq24152)
B2
Revision2
Read Only
000: Revision 1.0;
001: Revision 1.1;
B1
Revision1
Read Only
010: Revision 1.2;
B1 (LSB)
Revision0
Read Only
011-111: Future Revisions
Table 9. Battery Termination/Fast Charge Current Register (Read/Write)
Memory Location: 04, Reset State: 1000 1001 (89H)
BIT
NAME
READ/WRITE
FUNCTION
Write: 1-Charger in reset mode, 0-No effect
B7 (MSB)
Reset
Read/Write
Read: always get "1"
B6
VI(CHRG2)
Read/Write
Charge current sense voltage: 27.2mV (default 0)
B5
VI(CHRG1)
Read/Write
Charge current sense voltage: 13.6mV(default 0)
B4
VI(CHRG0)
Read/Write
Charge current sense voltage: 6.8mV (default 0)
B3
NA
Read/Write
NA
B2
VI(TERM2)
Read/Write
Termination current sense voltage: 13.6mV (default 0)
B1
VI(TERM1)
Read/Write
Termination current sense voltage: 6.8mV (default 0)
B1 (LSB)
VI(TERM0)
Read/Write
Termination current sense voltage: 3.4mV (default 1)
Default charge current is 55 0mA and default termination current is 100 mA, if a 68-m
Ω sensing resistor is used.
Both the termination current range and charge current range are depending on the sensing resistor R(SNS)). The
termination current step (IO(TERM_STEP)) is calculated using Equation 2:
Table 10 shows the termination current settings with two sensing resistors.
Copyright © 2008, Texas Instruments Incorporated
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