Datasheet

TPS65720

TPS65721

SLVS979 –OCTOBER 2009

www.ti.com

CHGCONFIG1 Register Address: 03h (read/write)

CHGCONFIG1 B7 B6 B5 B4 B3 B2 B1 BO

Bit name and function I_PRE1 I_PRE0 ICH_SCL1 ICH_SCL0 I_TERM1 I_TERM0

Default

For TPS65720 0 1 0 1 0 1 0 0

For TPS65721 0 1 1 1 0 1 1 1

Default value loaded by: UVLO/R UVLO/R UVLO/R UVLO/R UVLO/R UVLO/R

Read/write R/W R/W R/W R/W R/W R/W R R

Bit 7..6 I_PRE1..I_PRE0 (Pre-charge current factor):

00 = 5% of value defined with ICH_SCL1, ICH_SCL0

01 = 10% of value defined with ICH_SCL1, ICH_SCL0

10 = 15% of value defined with ICH_SCL1, ICH_SCL0

11 = 20% of value defined with ICH_SCL1, ICH_SCL0

Bit 5..4 ICH_SCL1..ICH_SCL0 (charge current scaling factor):

00 = 25% of value defined with ISET resistor; safety timer will time out at 2x SFTY_TMR[0,1]

01 = 50% of value defined with ISET resistor; safety timer runs at its nominal time defined in

SFTY_TMR[0,1]

10 = 75% of value defined with ISET resistor; safety timer will time out at 0.66x SFTY_TMR[0,1]

11 = 100% of value defined with ISET resistor; safety timer will time out at 0.5x SFTY_TMR[0,1]

Bit 3..2 I_TERM1..I_TERM0 (termination current scaling factor):

00 = 5% of value defined with ICH_SCL1, ICH_SCL0

01 = 10% of value defined with ICH_SCL1, ICH_SCL0

10 = 15% of value defined with ICH_SCL1, ICH_SCL0

11 = 20% of value defined with ICH_SCL1, ICH_SCL0

Product Folder Link(s): TPS65720 TPS65721