BQ24257 Datasheet, PDF (33/45 Pages) Texas Instruments – 2A Single Input I2C, Standalone Switch-Mode Li-Ion Battery Charger with Integrated Current Sense Resistor

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bq24257
bq24258
SLUSBG0B – FEBRUARY 2013 – REVISED JULY 2013
Register #7
Memory location: 06, Reset state: 1110 0000 for the bq24258 and 0010 0000 for the bq24257.
BIT
NAME
Read/Write
FUNCTION
B7(MSB)
B6
B5
V_{OVP_2}
V_{OVP_1}
V_{OVP_0}
Read/Write
Read/Write
Read/Write
OVP voltage:
000 – 6.0V; 001 – 6.5V; 010 – 7.0V; 011 – 8.0V
100 – 9.0V; 101 – 9.5V; 110 – 10.0V; 111 –10.5V
B4
CLR_VDP
Read/Write 0 – Keep D+ voltage source on during DBP charging
1 – Turn off D+ voltage source to release D+ line
B3
FORCE_BATDET Read/Write 0 – Enter the battery detection routine only if TERM is true or EN_PTM is true
1 – Enter the battery detection routine
B2
FORCE_PTM
Read/Write 0 – PTM mode is disabled
1 – PTM mode is enabled if OTP_EN_PTM=1
B1
N/A
Read/Write
B0(LSB)
N/A
Read/Write
• V_OVP – Sets the OVP level
• CLR_VDP – When the D+/D– detection has finished, some cases require the D+ pin to force a voltage of
0.6V. This bit allows the system to clear the voltage prior to any communication on the D+/D– pins. A ‘1’
clears the voltage at the D+ pin if present.
• FORCE_BATDET – Forces battery detection and provides status of the battery presence. A logic ‘1’ enables
this function.
• FORCE_PTM – Puts the device in production test mode (PTM) where the input current limit is disabled. Note
that a battery must not be present prior to using this function. Otherwise the function will not be allowed to
execute. A logic ‘1’ enables the PTM function.
Copyright © 2013, Texas Instruments Incorporated
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