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TPS2070 Datasheet(PDF) 5 Page - Texas Instruments

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Part No. TPS2070
Description  FOUR-PORT USB HUB POWER CONTROLLERS
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Manufacturer  TI [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI - Texas Instruments

TPS2070 Datasheet(HTML) 5 Page - Texas Instruments

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TPS2070, TPS2071
FOUR-PORT USB HUB POWER CONTROLLERS
SLVS287A – SEPTEMBER 2000 – REVISED FEBRUARY 2001
5
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
detailed description (continued)
BP_DIS
BP_DIS is used to enable or disable the autoswitching function between bus-powered mode and self-powered
mode. When BP_DIS is connected low and the voltage on SP is greater than the undervoltage-lockout (UVLO)
threshold, the device will switch to self-powered operation automatically; if the SP voltage falls lower than the
UVLO threshold, the device will switch to bus-powered operation. When BP_DIS is connected high, the
autoswitching function is disabled and the device will not autoswitch to bus-powered operation if the SP voltage
is below the UVLO threshold.
BPMODE or BPMODE
BPMODE (TPS2070) or BPMODE (TPS2071) is an output that signals when the device is in bus-powered
mode. The logic state is set according to the voltages on BP, SP, and BP_DIS. For the TPS2070, BPMODE
outputs a low signal to indicate bus-powered mode or a high signal to indicate self-powered mode. For the
TPS2071, BPMODE outputs a high signal to indicate bus-powered mode or a low signal to indicate self-powered
mode. This output can be used to inform a USB hub controller to configure for bus-powered mode or
self-powered mode.
OC1, OC2, OC3, OC4
OCx is an output signal that is asserted (active low) when an overcurrent or overtemperature condition is
encountered for the corresponding channel. OCx will remain asserted until the overcurrent or overtemperature
condition is removed.
EN1, EN2, EN3, EN4,
The active-low logic input ENx enables or disables the power switches in the device. The enable input is
compatible with both TTL and CMOS logic levels. The switches will not turn on until 3.3V_OUT is above the PG
threshold.
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
Input voltage range: VI(BP), VI(SP), VI(ENx), VI(EN_REG), VI(BP_DIS)
–0.3 V to 6 V
. . . . . . . . . . . . . . . . . . . . .
VI(VEXT)
–0.3 V to 10 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Output voltage range: VO(OUTx)
–0.3 V to 6 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
VO(3.3V_OUT), VO(PG_DLY), VO(OCx), VO(BPMODE),
VO(DP0_RST), VO(PG)
–0.3 V to VO (3.3V_OUT) 0.3 V
. . . . . . . . . . . . . . . . . . . . . . . . . . .
VO(GATE), VO(CP_M), VO(CP_P), VO(VCP)
–0.3 V to 15 V
. . . . . . . . . . . . . . . . . . . . . . .
Continuous output current: IO(OUTx)
internally limited
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
IO(3.3V_OUT)
internally limited
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Maximum output current:
IO(VCP)
±30 mA
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
IO(BPMODE) or IO(BPMODE), IO(DP0_RST), IO(PG), IO(OCx)
±10 mA
. . . . . . . . . .
IO(GATE), sourcing
700
µA
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
IO(GATE), sinking
–2.2 mA
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Continuous total power dissipation
See Dissipation Rating Table
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating virtual junction temperature range, TJ
–40
°C to 125°C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Storage temperature range, Tstg
–65
°C to 150°C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Lead temperature soldering 1,6 mm (1/16 inch) from case for 10 seconds
260
°C
. . . . . . . . . . . . . . . . . . . . . . .
† Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and
functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not
implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
‡ All voltages are with respect to GND.


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