TPS259270 Datasheet, PDF (1/31 Pages) Texas Instruments – 4.5V to 18-V eFuse with Blocking FET Control

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TPS259270, TPS259271
SLVSCU8A – AUGUST 2015 – REVISED AUGUST 2015
TPS25927x 4.5-V to 18-V eFuse with Blocking FET Control
1 Features
•1 4.5-V to 18-V Protection
• Integrated 28-mΩ Pass MOSFET
• Absolute Maximum Voltage of 20 V
• 1-A to 5-A Adjustable I_LIMIT
• ±8% I_LIMIT Accuracy at 3.7A
• Reverse Current Blocking Support
• Programmable OUT Slew Rate, UVLO
• Built-in Thermal Shutdown
• UL 2367 Recognition Pending
• Safe During Single Point Failure Test (UL60950)
• Small Foot Print – 10L (3 mm x 3 mm) VSON
2 Applications
• HDD and SSD Drives
• Set Top Boxes
• Servers / AUX Supplies
• Fan Control
• PCI/PCIe Cards
• Adapter Powered Devices
3 Description
The TPS25927x family of eFuses is a highly
integrated circuit protection and power management
solution in a tiny package. The devices use few
external components and provide multiple protection
modes. They are a robust defense against overloads,
shorts circuits, excessive inrush current, and reverse
current.
Current limit level can be set with a single external
resistor. Applications with particular voltage ramp
requirements can set dV/dT pin with a single
capacitor to ensure proper output ramp rates.
Many systems, such as SSDs, must not allow holdup
capacitance energy to dump back through the FET
body diode onto a drooping or shorted input bus. The
BFET pin is for such systems. An external NFET can
be connected “Back to Back (B2B)” with the
TPS25927x output and the gate driven by BFET to
prevent current flow from load to source.
Device Information⁽¹⁾
PART NUMBER
PACKAGE
BODY SIZE (NOM)
TPS259270
TPS259271
VSON (10)
3.00 mm × 3.00 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Application Schematic
Transient: Output Short Circuit
VIN
R1
R2
CdVdT
VIN
OUT
28m:
EN/UVLO
BFET
dV/dT
ILIM
GND
TPS25927x
OUT
COUT
RLIM
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.