
8.3
Electrical Characteristics
8.3.1
Main Charge
TPS65950
Integrated Power Management/Audio Codec
www.ti.com
SWCS032 – OCTOBER 2008
This section describes the electrical characteristics of the BCI in the TPS65950.
Table 8-1 lists the electrical characteristics of the main charge.
Table 8-1. Main Charge Electrical Characteristics
VBAT = 3.6 V, RS = 0.22 , unless otherwise specified
Parameter
Test Conditions
Min(1)
Typ(2)
Max(3)
Unit
VAC input voltage range(4)
Dc voltage
4.8
5.4
7
V
VBUS input voltage range
Dc voltage
4.4
5
6
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
IICTLAC1 = –10 A, ACPATHEN = 1, PWMEN = 1,
VAC–0.3
V
(PWM charge)
PWMDTYCY = 0x000
IICTLAC1 = 10 A, ACPATHEN = 1, PWMEN = 1,
0.35
PWMDTYCY = 0x3FF
ICTLAC1 output voltage swing
IICTLAC1 = –10 A, ACPATHEN = 1, LINCHEN = 1,
VAC–0.3
V
(linear charge)
MESBAT = 1, CHGVREG = 0x000
IICTLAC1 = 10 A, ACPATHEN = 1, LINCHEN = 1,
0.35
MESBAT = 1, CHGVREG = 0x3FF
ICTLUSB1 output voltage
IICTLUSB1 = –10 A, USBPATHEN = 1, LINCHEN = 1,
VBUS–0.3
V
swing (linear charge)
MESBAT = 1, CHGVREG = 0x000
IICTLUSB1 = 10 A, USBPATHEN = 1, LINCHEN = 1,
0.35
MESBAT = 1, CHGVREG = 0x3FF
ICTLAC2 output voltage swing
IICTLAC2 = –10 A, ACPATHEN = 1, LINCHEN = 1,
VCCS–0.3
V
(linear charge)
ACPATHEN = 0
IICTLAC2 = 10 A, ACPATHEN = 1, LINCHEN = 1,
0.35
ACPATHEN = 1
ICTLUSB2 output voltage
IICTLUSB2 = –10 A, USBPATHEN = 1, LINCHEN = 1,
VCCS–0.3
V
swing (linear charge)
USBPATHEN = 0
IICTLUSB2 = 10 A, 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)
Min = Minimum value
(2)
Typ = Typical value
(3)
Max = Maximum value
(4)
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
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).
Battery Interface
119