TPS2559 Datasheet, PDF (1/29 Pages) Texas Instruments – Precision Adjustable Current-Limited Power-Distribution Switch

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TPS2559
SLVSCL5 – JUNE 2014
TPS2559 Precision Adjustable Current-Limited Power-Distribution Switch
1 Features
•1 2.5 to 6.5 V Operating Range
• Adjustable 1.2 to 4.7 A I_(LIMIT) (±4.4% at 4.7 A)
• 3.5 µs Short Circuit Shutoff (Typical)
• 13-mΩ High-Side MOSFET
• 2-µA Maximum Standby Supply Current
• Built-in Soft-Start
• 8 kV / 15 kV System-Level ESD Capable
• UL 2367 Recognition Pending
2 Applications
• USB Ports/Hubs
• Digital TV
• Set-Top Boxes
• VOIP Phones
3 Description
The TPS2559 power-distribution switch is intended
for applications where a low resistance, precision
current limit switch is required or heavy capacitive
loads are encountered. The TPS2559 provides up to
5.5 A of continuous load current with a precise
current limit set by a single resistor to ground. Output
current is maintained at a safe level by switching into
a constant-current mode when the output load
exceeds the current-limit threshold. During overload
events the output current is limited to the level set by
R_(ILIM). If a persistent overload occurs, the device
goes into thermal shutoff to prevent damage to the
TPS2559.
The power-switch rise and fall times are controlled to
minimize current surges during turn on or off. The
FAULT logic output asserts low during overcurrent or
overtemperature conditions.
Device Information⁽¹⁾
PART NUMBER
PACKAGE
BODY SIZE (NOM)
TPS2559
VSON (10)
3.00mm x 3.00mm
(1) For all available packages, see the orderable addendum at
the end of the datasheet.
4 Simplified Schematic
TPS2559DRC
2.5V-6.5V 0.12F
I N ^{2/3/ 4}
OUT 7/8/9
V_OUT
RFAULT
FAULT
Signal
Control
Signal
COUT
10 _FAULT
5 _EN
Power
PAD
ILIM 6
GND
1
R_ILIM
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.