TPS2070, TPS2071
FOUR-PORT USB HUB POWER CONTROLLERS
SLVS287A – SEPTEMBER 2000 – REVISED FEBRUARY 2001
DAP PACKAGE
(TOP VIEW)
Complete USB Hub Power Solution
Meets USB Specifications 1.1 and 2.0
1
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
NC
EN1
AGND
NC
PG_DLY
BP_DIS
BP
OUT1
OUT2
OUT3
OUT4
OC4
OC3
OC2
OC1
EN4
Independent Thermal and Short-Circuit
Protection
2
3
3.3-V Regulator for USB Hub Controller
Overcurrent Logic Outputs
4
5
PG
SP
SP
NC
6
4.5-V to 5.5-V Operating Range
7
CMOS- and TTL-Compatible Enable Inputs
185 µA Bus-Power Supply Current
Available in 32-Pin HTSSOP PowerPAD
–40°C to 85°C Ambient Temperature Range
8
9
VEXT
GATE
3.3V_OUT
10
11
12
13
14
15
16
†
BPMODE
DP0_RST
EN_REG
EN2
EN3
description
CP_M
CP_P
VCP
The TPS2070 and TPS2071 provide a complete
USB hub power solution by incorporating four
major functions: current-limited power switches
for four ports, a 3.3-V 100-mA regulator, a 5-V
regulator controller for self power, and a DP0 line
control to signal attach/detach of the hub.
DGND
NC – No internal connection
Pin 12 is active low (BPMODE) for TPS2070 and
active high (BPMODE) for TPS2071.
†
‡
simplified hybrid-hub diagram
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 (can be
disabled by applying a logic high to BP_DIS).
D+
D–
OUT1
SP
5 V
GND
GATE
OUT2
TPS2070
Power
Supply
D+
D–
VEXT
OUT3
DP0_RST
BP
5 V
OUT4
GND
3.3 V_OUT
BPMODE
Each port has a current-limited 107-mΩ N-
channel MOSFET high-side power switch for
500 mA self-powered operation. Each port also
has a current-limited 560-mΩ N-channel MOS-
FET high-side power switch for 100-mA bus-pow-
ered operation. All the N-channel MOSFETs are
designed without parasitic diodes, preventing
current backflow into the inputs.
1.5
kΩ
Downstream
Ports
D+
D–
Upstream
Port
V
EN OC
DP1
DM1
CC
5 V
DP2
DM2
DP3
DM3
DP4
DM4
GND
DP0
DM0
D+
D–
Hub
Controller
5 V
D+
D–
GND
5 V
For applications not requiring a 5-V regulator
controller, use the TPS2074 or TPS2075 device.
GND
‡
See Figure 38 for complete implementation.
SELECTION GUIDE
PACKAGED DEVICES
T
A
USB HUB POWER CONTROLLERS
†
PIN COUNT
BPMODE HTSSOP (DAP)
SSOP (DB)
Active low
Active high
Active low
Active high
TPS2070DAP
—
Four-port with internal LDO controller
Four-port without internal LDO controller
32
24
TPS2071DAP
—
–40°C to 85°C
—
—
TPS2074DB
TPS2075DB
†
The DAP package is available taped and reeled. Add an R suffix to the device type (e.g., TPS2070DAPR).
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.
PowerPAD is a trademark of Texas Instruments.
Copyright 2001, Texas Instruments Incorporated
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
1
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265