Datasheet

TPS65950
SWCS032E–OCTOBER 2008–REVISED JANUARY 2011 www.ti.com
8.3 Electrical Characteristics
This section describes the electrical characteristics of the BCI in the TPS65950.
8.3.1 Main Charge
Table 8-1 lists the electrical characteristics of the main charge.
Table 8-1. Main Charge Electrical Characteristics
VBAT = 3.6 V, R
S
= 0.22 Ω, unless otherwise specified
Parameter Test Conditions Min Typ Max Unit
VAC input voltage range
(1)
dc voltage 4.8 5.4 7 V
VBUS input voltage range dc voltage 4.4 5 7 V
(external)
Charge current range 1.7 A
VAC accessory supply mode VBAT = 3.6 V, consumption on VBAT when ACCSUPEN 0.75 1 mA
consumption = 1 and ACPATHEN = 1 connected to VBAT, current
limitation enabled
VBAT = 3.6 V, consumption on VBAT when ACCSUPEN 0.525 0.7
= 1 and ACPATHEN = 1 connected to VBAT, current
limitation disabled
VBUS accessory supply mode VBAT = 3.6 V, consumption on VBAT when ACCSUPEN 0.64 0.85 mA
consumption = 1 and USBPATHEN = 1 connected to VBAT, current
limitation enabled
VBAT = 3.6 V, consumption on VBAT when ACCSUPEN 0.415 0.55
= 1 and USBPATHEN = 1 connected to VBAT, current
limitation disabled
ICTLAC1 output voltage swing I
ICTLAC1
= –10 μA, ACPATHEN = 1, PWMEN = 1, VAC–0.3 V
(PWM charge) PWMDTYCY = 0x000
I
ICTLAC1
= 10 μA, ACPATHEN = 1, PWMEN = 1, 0.35
PWMDTYCY = 0x3FF
ICTLAC1 output voltage swing I
ICTLAC1
= –10 μA, ACPATHEN = 1, LINCHEN = 1, VAC–0.3 V
(linear charge) MESBAT = 1, CHGVREG = 0x000
I
ICTLAC1
= 10 μA, ACPATHEN = 1, LINCHEN = 1, 0.35
MESBAT = 1, CHGVREG = 0x3FF
ICTLUSB1 output voltage I
ICTLUSB1
= –10 μA, USBPATHEN = 1, LINCHEN = 1, VBUS–0.3 V
swing (linear charge) MESBAT = 1, CHGVREG = 0x000
I
ICTLUSB1
= 10 μA, USBPATHEN = 1, LINCHEN = 1, 0.35
MESBAT = 1, CHGVREG = 0x3FF
ICTLAC2 output voltage swing I
ICTLAC2
= –10 μA, ACPATHEN = 1, LINCHEN = 1, VCCS–0.3 V
(linear charge) ACPATHEN = 0
I
ICTLAC2
= 10 μA, ACPATHEN = 1, LINCHEN = 1, 0.35
ACPATHEN = 1
ICTLUSB2 output voltage I
ICTLUSB2
= –10 μA, USBPATHEN = 1, LINCHEN = 1, VCCS–0.3 V
swing (linear charge) USBPATHEN = 0
I
ICTLUSB2
= 10 μA, USBPATHEN = 1, LINCHEN = 1, 0.35
USBPATHEN = 1
PWM mode output current PWM = 1 (ICTLAC1 = 0), VAC = 6.8 V 5.0 mA
PWM = 0 (ICTLAC1 = VAC), VAC = 6.8 V –2.0
(1) The maximum voltage value of the charging device is 7 V (process limitation). The minimum voltage value of the charging device is:
VBATMAX + 2 PMOS drop + 0.22 Ω resistor drop
(where VBATMAX is the maximum voltage value of the battery; that is, 4.2 V for Li-ion battery)
User must consider maximum dissipation while using maximum ac/USB voltage (7 V) or maximum current load (1.7 A).
118 Battery Interface Copyright © 2008–2011, Texas Instruments Incorporated
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