Datasheet

TPS65950
www.ti.com SWCS032E–OCTOBER 2008–REVISED JANUARY 2011
Table 8-4. Precharge Detection Characteristics (continued)
Symbol Parameter Comments Min Max Unit
T
CHECK
Repeat time check process 500 ms
T
PULSE
DP pullup pulse width 20 ms
In main charge, the basic chargers and basic carkits indicate their default current limit, versus the value of
the ID resistor, between the ID pin and the ground, and also versus the data bus D± connection type
(shorted or not shorted).
Table 8-5 lists the output current limit ranges according to the device type and parameters.
Table 8-5. Main Charge Current Limit Indication
Parameter Output Current Limit
Output ID Pin Current
Device Type
ID Resistor ID Pin
Voltage D+/D– Connection
(1)
Limit Min Max Unit
(1%) State
(nom) Implemented
Phone-powered
102k N/A
(2)
Not shorted N/A N/A N/A N/A
accessory
Low N/A 450 650
200k 5.0 V Shorted High No 450 650 mA
High Yes 750 950
Charger 5-wire
Low N/A 750 950
5.0 V Shorted mA
440k High No 750 950
4.5 V Shorted High Yes 1.8 3.0
(3)
A
Used for
200k 5.0 V D-high N/A 450 650
muting
Basic carkit 5-wire mA
Used for
440k 5.0 V D-high N/A 750 950
muting
Smart carkit 5-wire N/A 5.0 V D-high N/A N/A 0.450 3.0
(3)
A
Carkit 4-wire N/A 5.0 V D-high N/A N/A 0.450 3.0
(3)
A
(1) Shorted indicates that D+ (DP) is shorted to D– (DM).
(2) N/A = Not applicable
(3) The maximum current limit in this configuration is for safety. It does not indicate normal current loads for the phone.
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