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TPS259472ARPWR

2.7-V to 23-V, 28-mΩ, 5.5-A eFuse with integrated reverse polarity protection

Manufacturer: Texas Instruments, Inc
Mfr.Part #: TPS259472ARPWR
Datasheet: TPS259472ARPWR Datasheet (PDF)
Function: Electronic Fuse
Voltage - Input: 2.7V ~ 23V
Current - Output: 5.5A
Operating Temperature: -40°C ~ 125°C
EDA/CAD Models: Request Free CAD Models for TPS259472ARPWR

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TPS259472ARPWR General Description

The TPS25947xx family of eFuses is a highly integrated circuit protection and power management solution in a small package. The devices provide multiple protection modes using very few external components and are a robust defense against overloads, short-circuits, voltage surges, reverse polarity and excessive inrush current. With integrated back-to-back FETs, reverse current flow from output to input is blocked at all times, making the devices well suited for power MUX/ORing applications as well as systems which need load side energy hold up storage in case input power supply fails. The devices use linear ORing based scheme to ensure almost zero DC reverse current and emulate ideal diode behavior with minimum forward voltage drop and power dissipation.

Output slew rate and inrush current can be adjusted using a single external capacitor. Loads are protected from input overvoltage conditions either by clamping the output to a safe fixed maximum voltage (pin selectable), or by cutting off the output if input exceeds an adjustable overvoltage threshold. The devices respond to output overload by actively limiting the current or breaking the circuit. 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-mm × 2-mm, 10-pin HotRod QFN package 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.

Key Features

Wide operating input voltage range: 2.7 V to 23 V
- 28-V absolute maximum
- Withstands negative voltages up to –15 V
Integrated back-to-back FETs with low on-resistance: R_ON = 28.3 mΩ (typ.)
Ideal diode operation with true reverse current blocking
Fast overvoltage protection
- Overvoltage clamp (OVC) with pin-selectable threshold (3.8 V, 5.7 V, 13.8 V) and 5-µs (typ.) response time OR
- Adjustable overvoltage lockout (OVLO) with 1.2-µs (typ.) response time
Overcurrent protection with load current monitor output (ILM)
- Active current limit OR circuit-breaker options
- Adjustable threshold (I_LIM) 0.5 A–6 A
  - ±10% accuracy for I_LIM > 1 A
- Adjustable transient blanking timer (ITIMER) to allow peak currents up to 2 × I_LIM
- Output load current monitor accuracy: ±6% (I_OUT ≥ 1 A)
Fast-trip response for short-circuit protection
- 500-ns (typ.) response time
- Adjustable (2 × I_LIM) and fixed thresholds
Active high enable input with adjustable undervoltage lockout threshold (UVLO)
Adjustable output slew rate control (dVdt)
Overtemperature protection
Digital outputs
- Priority power MUX control (AUXOFF) and fault indication (FLT) or
- Power Good indication (PG) with adjustable threshold (PGTH)
UL 2367 recognition
- File No. E339631
- R_ILM ≥ 750 Ω
IEC 62368-1 CB certified
Small footprint: QFN 2 mm × 2 mm, 0.45-mm pitch

Specifications

Category	Integrated Circuits (ICs)Power Management (PMIC)Current Regulation/Management	Mfr	Texas Instruments
Series	-	Package	Tape & Reel (TR)Cut Tape (CT)Digi-Reel®
Product Status	Active	Function	Electronic Fuse
Sensing Method	-	Accuracy	-
Voltage - Input	2.7V ~ 23V	Current - Output	5.5A
Operating Temperature	-40°C ~ 125°C	Mounting Type	Surface Mount
Supplier Device Package	10-VQFN-HR (2x2)	Base Product Number	TPS259472
FET	Internal	Ron (typ) (mΩ)	28
Vin (min) (V)	2.7	Vin (max) (V)	23
Vabsmax_cont (V)	28	Current limit (min) (A)	0.5
Current limit (max) (A)	6	Overcurrent response	Circuit breaker, current limiting
Fault response	Auto-retry, Latch-off	Soft start	Adjustable
Overvoltage response	Clamp, Cut-off	Features	Current monitoring, Fault output, Power good signal, Reverse current blocking always, Reverse polarity protection
UL recognition	IEC62368, UL2367	Rating	Catalog
Device type	eFuses and hot swap controllers	Operating temperature range (°C)	-40 to 125
feature-type	Positive Voltage	feature-fault-management	Auto-Retry
feature-external-fet	N-Channel	feature-number-of-channels	1
feature-process-technology		feature-minimum-operating-supply-voltage-v	2.7
feature-maximum-operating-supply-voltage-v	23	feature-maximum-supply-current-ma
feature-packaging	Tape and Reel	feature-rad-hard
feature-pin-count	10	feature-supplier-package	VQFN-HR
feature-standard-package-name		feature-cecc-qualified
feature-esd-protection		feature-military	No
feature-aec-qualified	No	feature-aec-qualified-number
feature-eccn-code	EAR99	feature-svhc	No
feature-svhc-exceeds-threshold	No