Filter
Top Products
Texas Instruments 4Q 2006 Interface Selection Guide
VIN/SW1
LDO_EN
EN1
SW2
EN2
GND
LDO_OUT
LDO_ADJ
OC1
OUT1
OUT2
OC2
TPS2145/55
TSSOP-14
LDO
VIN/SW1
EN1
SW2
EN2
GND
LDO_OUT
OC1
OUT1
OUT2
OC2
TPS2147/57
MSOP-10
LDO
VIN/SW1
LDO_EN
EN1
EN2
GND
LDO_OUT
OUT1
OUT2
TPS2148/58
MSOP-8
LDO
VIN
EN1
EN2
GND
LDO_OUT
OUT1
OC
OUT2
TPS2149/59
MSOP-8
LDO
Bus Power
5-V LDO Mode
Device Controller Indicator Pins Package
4-Port USB Hub Power Controllers
TPS2070 Yes Active Low 32 HTSSOP
TPS2071 Yes Active High 32 HTSSOP
TPS2074 No Active Low 24 SSOP
TPS2075 No Active High 24 SSOP
USB Power Managers Family of Products
D
esign Considerations
USB High-Power Peripheral Switch With
Dual Current Limit + LDO
TPS2140/41/50/51—The TPS2140/41/50/51
target high-power USB peripherals such as
ADSL modems. The devices contain a power
switch and an LDO. The dual-current-limiting
switch allows the use of high-value capaci-
tance to stabilize the voltage from the USB bus.
Dual Power Switch + LDO for USB
Bus-Powered Peripherals and Hubs
TPS2148/49—TPS2148 is a complete power
management solution for USB bus-powered
peripherals such as zip drives, while TPS2149 is
for USB bus-powered hubs, such as keyboards
with integrated hubs. TPS2148/9 each combine
a 3.3-V LDO and dual power switch in a single
MSOP package. The TPS2148 switch configura-
tion allows power and board capacitance
segmentation to meet USB system current
requirements. The TPS2149 switches manage
two independent or four ganged USB ports.
4-Port USB Hub Power Controllers
TPS207x—The TPS207x family provides the
complete power solution for 4-port self-
powered, bus-powered or hybrid USB hubs by
incorporating current-limited switches for four
ports, a 3.3-V 100-mA LDO, a 5-V LDO
controller for self power (TPS2070, TPS2071)
and a DP0 line control to signal an attach to
the host.
Ease of Use—USB allows simplified installa-
tion and improved performance for peripheral
devices by eliminating the need to repeatedly
load new drivers and establish individual set-
tings. USB combines a multitude of existing
interfaces into a single easy-to-use connector,
greatly reducing system complexity and offer-
ing manufacturers the ability to develop highly
integrated products.
Power Distribution Switches
TPS204xB/5xB—The TPS204xB/5xB families
of 80-mΩ current-limiting power switches
meet all the USB power management
requirements for controlling downstream
ports, and include additional features to
improve the design reliability. For example,
when an over-current condition exists, the
device intelligently shuts down only the port
that sees the fault.
TPS202x/3x/6x—The TPS202x/3x/6x families
of low on-resistance current-limiting power
switches allow ganging of multiple ports to
a single switch, as described in Application
Note SLVA049. Though ganging can be cost-
effective, all ports are affected by a fault.
Dual Power Switch +
LDO for USB
Bus-Powered Peripherals and Hubs
Current Limit (min) (A)
0.22 0.3 0.66 0.7 1.1 1.5 1.65 2.2
USB Power Distribution Switches
Quad — TPS2048A/58A — TPS2044B/54B — — — —
Triple — TPS2047B/57A — TPS2043B/53B TPS2063/67 — — —
Dual — TPS2046B/56A — TPS2042B/52B TPS2062/66 TPS2060/64 — —
Single TPS2020/30 TPS2045A/55A TPS2021/31 TPS2041B/51B TPS2022/32/61/65 — TPS2023/33 TPS2024/34
Universal Serial Bus (USB) Power Managers
27
➔