TPS2553QDBVRQ1 Datasheet, PDF (1/29 Pages) Texas Instruments – PRECISION ADJUSTABLE CURRENT-LIMITED POWER-DISTRIBUTION SWITCHES

TPS2553-Q1
www.ti.com
SLVSBD0 – NOVEMBER 2012
PRECISION ADJUSTABLE CURRENT-LIMITED POWER-DISTRIBUTION SWITCHES
Check for Samples: TPS2553-Q1
FEATURES
1
•2 Qualified for Automotive Applications
• AEC-Q100 Qualified With the Following
Results:
– Device Temperature Grade 1: –40°C to
125°C Ambient Operating Temperature
Range
– Device HBM ESD Classification Level H2
– Device CDM ESD Classification Level C3B
• Up to 1.5 A Maximum Load Current
• ±6% Current-Limit Accuracy at 1.7 A (typ)
• Meets USB Current-Limiting Requirements
• Backwards Compatible with TPS2550/51
• Adjustable current-limit, 75 mA–1300 mA (typ)
• Constant-Current (TPS2553-Q1)
• Fast Overcurrent Response - 2-μs (typ)
• 85-mΩ High-Side MOSFET (DBV Package)
• Reverse Input-Output Voltage Protection
• Operating Range: 2.5 V to 6.5 V
• Built-in Soft-Start
• 15 kV ESD Protection per IEC 61000-4-2 (with
External Capacitance)
• UL Listed – File No. E169910 and NEMKO
IEC60950-1-am1 ed2.0
• See the TI Switch Portfolio
APPLICATIONS
• Automotive
• Power Distribution
• Current Limiting
DESCRIPTION
The TPS2553-Q1 power-distribution switches are intended for applications where precision current-limiting is
required or heavy capacitive loads and short circuits are encountered and provide up to 1.5 A of continuous load
current. These devices offer a programmable current-limit threshold between 75 mA and 1.7 A (typ) via an
external resistor. Current-limit accuracy as tight as ±6% can be achieved at the higher current-limit settings. The
power-switch rise and fall times are controlled to minimize current surges during turn on/off.
TPS2553-Q1 devices limit the output current to a safe level by using a constant-current mode when the output
load exceeds the current-limit threshold. An internal reverse- voltage comparator disables the power- switch
when the output voltage is driven higher than the input to protect devices on the input side of the switch. The
FAULT output asserts low during overcurrent and reverse-voltage conditions.
TPS2553-Q1
DRV PACKAGE
(TOP VIEW)
OUT 1
6 IN
IN
ILIM 2 ^PAD 5 GND GND
FAULT ³
4 EN
EN
TPS2553-Q1
DBV PACKAGE
(TOP VIEW)
1
6
2
5
3
4
OUT
ILIM
FAULT
EN = Active Low for the TPS2553-Q1
EN = Active High for the TPS2553-Q1
Add -1 to part number for lach-off version
5V USB
Input
R_FAULT
100 kW
Fault Signal
Control Signal
TPS2553-Q1
0.1 mF
IN
OUT
FAULT ^ILIM
EN
GND
Power Pad
USB Data
USB
Port
120 mF
R_ILIM
20 kW ^{USB requirement only*}
*USB requirement that downstream
facing ports are bypassed with at least
120 mF per hub
Figure 1. Typical Application as USB Power Switch
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.
PowerPAD is a trademark of Texas Instruments.
2
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2012, Texas Instruments Incorporated