TPS2070, TPS2071

FOUR-PORT USB HUB POWER CONTROLLERS

SLVS287A – SEPTEMBER 2000 – REVISED FEBRUARY 2001

5

POST OFFICE BOX 655303

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.

–0.3 V to 6 V

. . . . . . . . . . . . . . . . . . . . .

–0.3 V to 10 V

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

–0.3 V to 6 V

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . .

–0.3 V to 15 V

. . . . . . . . . . . . . . . . . . . . . . .

internally limited

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

internally limited

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Maximum output current:

±30 mA

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

±10 mA

. . . . . . . . . .

700

µA

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

–2.2 mA

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Continuous total power dissipation

See Dissipation Rating Table

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

–40

°C to 125°C

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

–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.