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TPS2075DBBB/TIN/a77avaiPwr Controller for Bus/Self Pwrd USB Hub with 3.3V LDO, 8 pwr switches, Act-High BPMode Indicator
TPS2075DBRTIN/a2084avaiPwr Controller for Bus/Self Pwrd USB Hub with 3.3V LDO, 8 pwr switches, Act-High BPMode Indicator


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TPS2075DB-TPS2075DBR
Pwr Controller for Bus/Self Pwrd USB Hub with 3.3V LDO, 8 pwr switches, Act-High BPMode Indicator
3.3-V Regulator for USB Hub Controller Overcurrent Logic Outputs 4.5-V to 5.5-V Operating Range CMOS- and TTL-Compatible Enable Inputs 185 μA Bus-Power Supply Current Available in 24-Pin SSOP Package –40°C to 85°C Ambient Temperature Range
description

The TPS2074 and TPS2075 provide a complete
USB hub power solution by incorporating three
major functions: current-limited power switches
for four ports, a 3.3-V 100-mA regulator, and a
DP0 line control to signal attach/detach of the hub.
These devices are designed to meet bus-pow-
ered and self-powered hub requirements. These
devices are also designed for hybrid hub
implementations and allow for automatic switch-
ing from self-powered mode to bus-powered
mode if loss of self-power is experienced. This
feature can be disabled by applying a logic high to
the BP_DIS input
Each port has a current-limited 100-mΩ N-
channel MOSFET high-side power switch for
500 mA self-powered operation. Each port also
has a current-limited 500-mΩ N-channel MOS-
FET high-side power switch for 100-mA bus-
powered operation. All the N-channel MOSFETs
are designed without parasitic diodes, preventing
current backflow into the inputs.
For applications where a 5-V regulator is needed,
use the TPS2070 or TPS2071 device.
SELECTION GUIDE

†The DB package is available taped and reeled. Add an R suffix to the device type (e.g., TPS2074DBR).
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
NC – No internal connection
†Pin 9 is active low (BPMODE) for TPS2074
and active high (BPMODE) for TPS2075.
Upstream
Port
simplified hybrid-hub diagram‡

‡See Figure 33 for complete implementation.
3.3V_OUT
BPMODE†
DP0_RST
EN2
DGND
OUT2
OUT3
OUT4
OC4
OC3
OC2
OC1
EN4
EN3
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