1 Features
• Wide operating input voltage range: 3.5V to 23V
– 28V absolute maximum
– Can be powered from either IN or OUT
• Integrated back-to-back FETs with low ONresistance:
RON = 12.2mΩ (typ)
• Ideal diode operation with true reverse current
blocking (RCB)
– External pin control (RCBCTRL) to disable
RCB and allow bi-directional power delivery
in steady-state to support USB OTG or DRP
operation
• Fast overvoltage protection
– Adjustable overvoltage lockout (OVLO) with
1μs (typ) response time
• Overcurrent protection with load current monitor
output (ILM)
– Active current limit response
– Adjustable threshold (ILIM) 1A–9A
• ±10% accuracy (max) for ILIM > 3A
– Adjustable transient blanking timer (ITIMER) to
allow peak currents > ILIM
– Output load current monitor accuracy: ±6%
(typ) (IOUT ≥ 3A)
• Fast-trip response for short-circuit protection
– < 1μs (typ) response time
– Adjustable and fixed thresholds
• Active high enable input with adjustable
undervoltage lockout threshold (UVLO)
• Adjustable output slew rate control (dVdt)
• Overtemperature protection
• Digital outputs: Supply Good (SPLYGD/SPLYGD)
and Fault Indication (FLT)
• UL 2367 recognition (planned)
• IEC 62368-1 CB certification (planned)
• IEC 61000-4-5: 28V on IN
• Small footprint: PowerWCSP 2.4mm × 1.7mm,
0.5mm pitch

2 Applications
• Adapter and charger input protection
• USB PD protection: smartphone, tablet, PC,
notebook, monitor, dock
• Server motherboard, add-on cards
• Enterprise storage: HBA, SAN, and eSSD
• Power MUXing and ORing

3 Description
The TPS25948xx family of eFuses is a highly
integrated, circuit-protection and power-management
solution in a small package. The devices
provide multiple protection modes that use few
external components and are a robust defense
against overloads, short-circuits, voltage surges and
excessive inrush current. With integrated back-toback
FETs, reverse current flow from output to input
is blocked at all times, making the devices well suited
for power MUX and ORing applications, as well as
systems that need load side energy hold up storage
if input power supply fails. The devices use a linear
ORing based scheme to ensure almost zero DC
reverse current and emulate ideal diode behavior with
minimum forward voltage drop and power dissipation.
The devices also provide an external pin control
option to disable the reverse current blocking and
allow bi-directional power delivery in steady-state.
Output slew rate and inrush current can be adjusted
using a single external capacitor. Loads are protected
from input overvoltage conditions by cutting off the
output if input exceeds an adjustable overvoltage
threshold. The devices respond to output overload by
actively limiting the current. The output current limit
threshold as well as the transient overcurrent blanking
timer are user adjustable. The current limit control pin
also functions as an analog load current monitor.
The devices are available in a 2.4mm × 1.7mm, 12-
ball power wafer chip scale package (PowerWCSP)
for improved thermal performance and reduced
system footprint.
The devices are characterized for operation over a
junction temperature range of –40°C to +125°C.