TPS25940-Q1 Datasheet, PDF (1/46 Pages) Texas Instruments – 18-V eFuse with Integrated Short-to-Battery Protection

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TPS25940-Q1
SLVSDJ0A – MAY 2016 – REVISED JUNE 2016
TPS25940-Q1 2.7-V to 18-V eFuse with Integrated Short-to-Battery Protection
1 Features
•1 AEC-Q100 Qualified with:
– Temperature Grade 1: –40°C to +125°C
Ambient Operating Temperature Range
– Device HBM ESD Classification Level 2
– Device CDM ESD Classification Level C5
• 2.7-V to 18-V Operating Voltage, 20 V (Maximum)
• Total R_ON: 42 mΩ (Typical)
• 0.6-A to 5.3-A Adjustable Current Limit (±8%)
• IMON Current Indicator Output (±8%)
• Adjustable Under-, Overvoltage Threshold (±2%)
• Reverse Current Blocking
• 1-μs Reverse Voltage Shutoff
• Programmable dV_o/dt Control
• Power Good and Fault Outputs
• Short-to-Battery Protection
• Short-to-Ground Protection
2 Applications
• USB Hubs
• Holdup Power Management
• Automotive Infotainment
• ADAS Cameras and Radar Sensors
3 Description
The TPS25940-Q1 eFuse Power Switch is a
compact, feature rich power management device with
a full suite of protection functions. The wide operating
range allows control of many popular DC bus
voltages. Integrated back-to-back FETs provide
bidirectional current control making the device well
suited for systems with load side holdup energy that
must not drain back to a failed supply bus.
Load, source and device protection are provided with
many programmable features including overcurrent,
dV_o/dt ramp and overvoltage, undervoltage
thresholds. For system status monitoring and
downstream load control, the device provides
PGOOD, FLT and precise current monitor output.
Precise programmable undervoltage, overvoltage
thresholds and mode simplify power management
design.
The TPS25940-Q1 monitors V_(IN) and V_(OUT) to
provide true reverse current blocking when V_(IN) <
(V_(OUT) – 66 mV). This function supports supply bus
protection from over-voltages during output short to
battery faults.
Device Information⁽¹⁾
PART NUMBER
PACKAGE
BODY SIZE (NOM)
TPS25940-Q1
WQFN (20)
3.00 mm x 4.00 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Figure 1.
Simplified Schematic
Figure 2.
Output Short-to-Battery Detection and Protection
5 V Power Bus
R1
IN
C*IN
R2
R3
CdVdT
IN
OUT
42PŸ
EN/UVLO
OVP
DEVSLP
dVdT
GND
FLT
PGTH
PGOOD
IMON
ILIM
TPS25940-Q1
OUT
R4 ^COUT
USB Connector
VBUS
D-
D+
GND
RILIM
Copyright © 2016, Texas Instruments Incorporated
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.