TPS2070_07 Datasheet, PDF (1/31 Pages) Texas Instruments – FOUR-PORT USB HUB POWER CONTROLLERS

TPS2070, TPS2071
FOUR-PORT USB HUB POWER CONTROLLERS
SLVS287A – SEPTEMBER 2000 – REVISED FEBRUARY 2001
D Complete USB Hub Power Solution
D Meets USB Specifications 1.1 and 2.0
D Independent Thermal and Short-Circuit
Protection
D 3.3-V Regulator for USB Hub Controller
D Overcurrent Logic Outputs
D 4.5-V to 5.5-V Operating Range
D CMOS- and TTL-Compatible Enable Inputs
D 185 µA Bus-Power Supply Current
D Available in 32-Pin HTSSOP PowerPAD
D –40°C to 85°C Ambient Temperature Range
description
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.
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).
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.
For applications not requiring a 5-V regulator
controller, use the TPS2074 or TPS2075 device.
NC
EN1
AGND
NC
PG
SP
SP
NC
VEXT
GATE
3.3V_OUT
BPMODE^†
DP0_RST
EN_REG
EN2
DGND
DAP PACKAGE
(TOP VIEW)
1
32
2
31
3
30
4
29
5
28
6
27
7
26
8
25
9
24
10
23
11
22
12
21
13
20
14
19
15
18
16
17
PG_DLY
BP_DIS
BP
OUT1
OUT2
OUT3
OUT4
OC4
OC3
OC2
OC1
EN4
EN3
CP_M
CP_P
VCP
NC – No internal connection
† _{Pin 12 is active low (BPMODE) for TPS2070 and}
active high (BPMODE) for TPS2071.
simplified hybrid-hub diagram^‡
Power
Supply
1.5
kΩ
SP
OUT1
GATE
TPS2070
VEXT
DP0_RST
BP
OUT2
OUT3
OUT4
3.3 V_OUT
BPMODE
Upstream
Port
D+
D–
5V
GND
VCC EN OC
DP0
DM0
Hub
Controller
DP1
DM1
DP2
DM2
DP3
DM3
DP4
DM4
‡ _{See Figure 38 for complete implementation.}
D+
D–
5V
GND
D+
D–
5V
GND
Downstream
Ports
D+
D–
5V
GND
D+
D–
5V
GND
SELECTION GUIDE
PACKAGED DEVICES
TA
USB HUB POWER CONTROLLERS
PIN COUNT BPMODE HTSSOP (DAP)†
– 40°C to 85°C
Four-port with internal LDO controller
Four-port without internal LDO controller
Active low TPS2070DAP
32
Active high TPS2071DAP
Active low
—
24
Active high
—
† _{The DAP package is available taped and reeled. Add an R suffix to the device type (e.g., TPS2070DAPR).}
SSOP (DB)
—
—
TPS2074DB
TPS2075DB
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.
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.
Copyright  2001, Texas Instruments Incorporated
• POST OFFICE BOX 655303 DALLAS, TEXAS 75265
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