TPS20XXC Datasheet, PDF (1/26 Pages) Texas Instruments – Current-Limited, Power-Distribution Switches Deglitched Fault Reporting

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TPS20xxC
SLVSAU6A – JUNE 2011 – REVISED JULY 2011
Current-Limited, Power-Distribution Switches
Check for Samples: TPS20xxC
FEATURES
1
•23 Single Power Switch Family
• Pin for Pin with Existing TI Switch Portfolio
• Rated currents of 0.5 A, 1 A, 1.5 A, 2 A
• ±20% Accurate, Fixed, Constant Current Limit
• Fast Over-Current Response – 2 µs
• Deglitched Fault Reporting
• Output Discharge When Disabled
• Reverse Current Blocking
• Built-in Softstart
• Ambient Temperature Range: –40°C to 85°C
APPLICATIONS
• USB Ports/Hubs, Laptops, Desktops
• High-Definition Digital TVs
• Set Top Boxes
• Short-Circuit Protection
DESCRIPTION
The TPS20xxC power-distribution switch family is
intended for applications such as USB where heavy
capacitive loads and short-circuits are likely to be
encountered. This family offers multiple devices with
fixed current-limit thresholds for applications between
0.5 A and 2 A.
The TPS20xxC family limits the output current to a
safe level by operating in a constant-current mode
when the output load exceeds the current-limit
threshold. This provides a predictable fault current
under all conditions. The fast overload response time
eases the burden on the main 5 V supply to provide
regulated power when the output is shorted. The
power-switch rise and fall times are controlled to
minimize current surges during turn-on and turn-off.
DGN
(Top View)
GND 1
IN 2
IN 3
EN or EN 4
8 OUT
7 OUT
6 OUT
5 FLT
DBV
(Top View)
OUT 1 5 IN
GND 2
FLT 3
4 EN or EN
TYPICAL APPLICATION
V_IN
R_FLT
10 kW
IN
OUT
V_OUT
150 mF
Fault Signal
Control Signal
* DGN only
FLT
EN or
EN
GND
Pad*
Figure 1. Typical Application
Table 1. DEVICES⁽¹⁾
MAXIMUM OPERATING
CURRENT
0.5
1
1.5
2
DEVICES
TPS2051C
TPS2065C
TPS2069C
TPS2000C / 1C
STATUS
MSOP-8
(PowerPad) ™
-
Active
Active
Active
SOT23-5
Preview
Preview
-
-
(1) For more details, see the DEVICE INFORMATION table.
1
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.
2PowerPAD is a trademark of Texas Instruments.
3 is a trademark of ~ Texas Instruments.
UNLESS OTHERWISE NOTED this document contains
PRODUCTION DATA information 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 © 2011, Texas Instruments Incorporated