DATA SHEET
TPS25925x, TPS25926x Simple 5-V/12-V eFuse Protection Switches
1 Features
- 12-V eFuse – TPS25926x
- 5-V eFuse – TPS25925x
- Integrated 30-mΩ Pass MOSFET
- Fixed Over-Voltage Clamp:
- 6.1-V Clamp - TPS25925x
- 15-V Clamp - TPS25926x
- 2-A to 5-A Adjustable ILIMIT (±15% Accuracy)
- Programmable VOUT Slew Rate, UVLO
- Built-in Thermal Shutdown
- UL 2367 Recognized – File No. E339631*
- *RILIM ≤ 130 kΩ (5 A maximum)
- 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 and AUX Supplies
- PCI and PCIe Cards
- Adapter Powered Devices
3 Description
The TPS25925x/6x 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, voltage surges, excessive inrush current. Current limit level can be set with a single external resistor and current limit set has a typical accuracy of ±15%. Over voltage events are limited by internal clamping circuits to a safe fixed maximum, with no external components required. TPS25926x devices provide over voltage protection (OVP) for 12-V systems and TPS25925x devices for 5-V systems. In cases with particular voltage ramp requirements, a dV/dT pin is provided that can be programmed with a single capacitor to ensure proper output ramp rates.
Device Information(1)
| PART NUMBER | PACKAGE | BODY SIZE (NOM) |
|---|---|---|
| TPS259250, TPS259251 | VSON (10) | 3.00 mm × 3.00 mm |
| TPS259260, TPS259261 |
- For all available packages, see the orderable addendum at the end of the data sheet.
Application Schematic
Transient: Output Short Circuit
4 Revision History
Changes from A Revision (August 2015) to B Revision
- Updated Features, Description, Feature Description and Device Functional Modes sectionGo
Changes from * Revision (August 2015) to A Revision
- Changed from Product Preview to Production DataGo
5 Device Comparison Table
| PART NUMBER | UV | OV CLAMP | FAULT RESPONSE | STATUS |
|---|---|---|---|---|
| TPS259250 | 4.3 V | 6.1 V | Latched | Active |
| TPS259251 | 4.3 V | 6.1 V | Auto Retry | Active |
| TPS259260 | 4.3 V | 15 V | Latched | Active |
| TPS259261 | 4.3 V | 15 V | Auto Retry | Active |
6 Pin Configuration and Functions
DRC Package
10-Pin VSON
Top View
Pin Functions
| PIN | TYPE | DESCRIPTION | |
|---|---|---|---|
| No. | NAME | ||
| 1 | dV/dT | O | Connect a capacitor from this pin to GND to control the ramp rate of OUT voltage at device turnon |
| 2 | EN/UVLO | I | This is a dual function control pin. When used as an ENABLE pin and pulled down, it shuts off the internal pass MOSFET. When pulled high, it enables the device As an UVLO pin, it can be used to program different UVLO trip point via external resistor divider |
| 3 | VIN | I | Input supply voltage |
| 4 | |||
| 5 | |||
| 6 | OUT | O | Output of the device |
| 7 | |||
| 8 | |||
| 9 | NC | NC | Not Connected Internally. Can be left floating or grounded |
| 10 | ILIM | O | A resistor from this pin to GND sets the overload and short circuit limit |
| Thermal Pad | GND | Ground | GND |
7 Specifications
7.1 Absolute Maximum Ratings
over operating temperature range (unless otherwise noted) (1) (2)| MIN | MAX | UNIT | ||
|---|---|---|---|---|
| Supply voltage(2) | VIN | –0.3 | 20 | V |
| VIN (transient < 1 ms) | 22 | |||
| Output voltage | OUT | –0.3 | VIN + 0.3 | V |
| OUT (transient < 1 µs) | –1.2 | |||
| Voltage | ILIM | –0.3 | 7 | V |
| Continuous output current | 6.25(3) | A | ||
| Voltage | EN/UVLO | –0.3 | 7 | V |
| Voltage | dV/dT | –0.3 | 7 | V |
| Storage temperature | Tstg | –65 | 150 | °C |
(1) Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only, which do not imply functional operation of the device at these or any other conditions beyond those indicated under Recommended Operating Conditions. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
(2) All voltage values, except differential voltages, are with respect to network ground terminal.
(3) Device supports high peak current during short circuit conditions until current is internally limited.
7.2 ESD Ratings
| VALUE | UNIT | |||
|---|---|---|---|---|
| V(ESD) | Electrostatic discharge | Human body model (HBM), per ANSI/ESDA/JEDEC JS-001(1) | ±2000 | V |
| Charged device model (CDM), per JEDEC specification JESD22-C101(2) | ±500 | |||
(1) JEDEC document JEP155 states that 500-V HBM allows safe manufacturing with a standard ESD control process.
(2) JEDEC document JEP157 states that 250-V CDM allows safe manufacturing with a standard ESD control process.
7.3 Recommended Operating Conditions
over operating free-air temperature range (unless otherwise noted)| MIN | TYP | MAX | UNIT | ||
|---|---|---|---|---|---|
| Input voltage | VIN (TPS25926x) | 4.5 | 12 | 13.8 | V |
| VIN (TPS25925x) | 4.5 | 5 | 5.5 | ||
| dV/dT, EN/UVLO | 0 | 6 | |||
| ILIM | 0 | 3 | |||
| Continuous output current | IOUT | 0 | 5 | A | |
| Resistance | ILIM | 10 | 100 | 162 | kΩ |
| External capacitance | OUT | 0.1 | 1 | 1000 | µF |
| dV/dT | 1 | 1000 | nF | ||
| Operating junction temperature | TJ | –40 | 25 | 125 | °C |
| Operating ambient temperature | TA | –40 | 25 | 85 | °C |
7.4 Thermal Information(1)
over operating free-air temperature range (unless otherwise noted)| THERMAL METRIC | TPS25925x/6x | UNIT | |
|---|---|---|---|
| DRC (VSON) | |||
| 10 PINS | |||
| RθJA | Junction-to-ambient thermal resistance | 45.9 | °C/W |
| RθJCtop | Junction-to-case (top) thermal resistance | 53 | °C/W |
| RθJB | Junction-to-board thermal resistance | 21.2 | °C/W |
| ψJT | Junction-to-top characterization parameter | 1.2 | °C/W |
| ψJB | Junction-to-board characterization parameter | 21.4 | °C/W |
| RθJCbot | Junction-to-case (bottom) thermal resistance | 5.9 | °C/W |
(1) For more information about traditional and new thermal metrics, see the Semiconductor and IC Package Thermal Metrics application report, SPRA953.
7.5 Electrical Characteristics
–40°C ≤ TJ ≤ +125°C, VIN = 12 V for TPS25926x, VIN = 5 V for TPS25925x, VEN /UVLO = 2 V, RILIM = 100 kΩ, CdVdT = OPEN. All voltages referenced to GND (unless otherwise noted).| PARAMETER | TEST CONDITIONS | MIN | TYP | MAX | UNIT | |
|---|---|---|---|---|---|---|
| VIN (INPUT SUPPLY) | ||||||
| VUVR | UVLO threshold, rising | 4.15 | 4.3 | 4.45 | V | |
| VUVhyst | UVLO hysteresis(1) | 5% | ||||
| IQON | Supply current | Enabled: EN/UVLO = 2 V, TPS25926x | 0.3 | 0.47 | 0.55 | mA |
| Enabled: EN/UVLO = 2 V, TPS25925x | 0.35 | 0.42 | 0.6 | mA | ||
| IQOFF | EN/UVLO = 0 V | 0.13 | 0.225 | mA | ||
| VOVC | Over-voltage clamp | VIN > 16.5 V, IOUT = 10 mA, TPS25926x | 13.8 | 15 | 16.5 | V |
| VIN > 6.75 V, IOUT = 10 mA, –40℃ ≤ TJ ≤ +85℃, TPS25925x |
5.5 | 6.1 | 6.75 | |||
| VIN > 6.75 V, IOUT = 10 mA, –40℃ ≤ TJ ≤ +125℃, TPS25925x |
5.25 | 6.1 | 6.75 | |||
| EN/UVLO (ENABLE/UVLO INPUT) | ||||||
| VENR | EN threshold voltage, rising | 1.37 | 1.4 | 1.44 | V | |
| VENF | EN threshold voltage, falling | 1.32 | 1.35 | 1.39 | V | |
| IEN | EN input leakage current | 0 V ≤ VEN ≤ 5 V | –100 | 0 | 100 | nA |
| dV/dT (OUTPUT RAMP CONTROL) | ||||||
| IdVdT | dV/dT charging current(1) | VdVdT = 0 V | 220 | nA | ||
| RdVdT_disch | dV/dT discharging resistance | EN/UVLO = 0 V, IdVdT = 10 mA sinking | 50 | 73 | 100 | Ω |
| VdVdTmax | dV/dT maximum capacitor voltage(1) | 5.5 | V | |||
| GAINdVdT | dV/dT to OUT gain(1) | ΔVdVdT | 4.85 | V/V | ||
| ILIM (CURRENT LIMIT PROGRAMMING) | ||||||
| IILIM | ILIM bias current(1) | 10 | µA | |||
| IOL | Overload current limit(2) | RILIM = 45.3 kΩ, VVIN-OUT = 1 V | 1.75 | 2.1 | 2.45 | A |
| RILIM = 100 kΩ, VVIN-OUT = 1 V | 3.4 | 3.75 | 4.05 | |||
| RILIM = 150 kΩ, VVIN-OUT = 1 V | 4.5 | 5.1 | 5.7 | |||
| IOL-R-Short | RILIM = 0 Ω, shorted resistor current limit (single point failure test: UL60950)(1) | 0.84 | A | |||
| IOL-R-Open | RILIM = OPEN, open resistor current limit (single point failure test: UL60950)(1) | 0.73 | A | |||
| ISCL | Short-circuit current limit(2) | RILIM = 45.3 kΩ, VVIN-OUT = 5 V, TPS25925x | 1.72 | 2.05 | 2.42 | A |
| RILIM = 45.3 kΩ, VVIN-OUT = 12 V, TPS25926x | 1.62 | 1.98 | 2.37 | |||
| RILIM = 100 kΩ, VVIN-OUT = 5 V, TPS25925x | 3.1 | 3.56 | 4 | |||
| RILIM = 100 kΩ, VVIN-OUT = 12 V, TPS25926x | 2.9 | 3.32 | 3.85 | |||
| RILIM = 150 kΩ, VVIN-OUT = 5 V, TPS25925x | 4.22 | 4.95 | 5.69 | |||
| RILIM = 150 kΩ, VVIN-OUT = 12 V, TPS25926x | 3.7 | 4.5 | 5.5 | |||
| RATIOFASTRIP | Fast-trip comparator level w.r.t. overload current limit(1) | IFASTRIP : IOL | 160% | |||
| VOpenILIM | ILIM open resistor detect threshold(1) | VILIM Rising, RILIM = OPEN | 3.1 | V | ||
| OUT (PASS FET OUTPUT) | ||||||
| TON | Turnon delay(1) | EN/UVLO → H to IVIN = 100 mA, 1-A resistive load at OUT | 220 | µs | ||
| RDS(on) | FET ON resistance | TJ = 25°C | 21 | 30 | 39 | mΩ |
| TJ = 125°C | 40 | 50 | ||||
| IOUT-OFF-LKG | OUT bias current in off state | VEN/UVLO = 0 V, VOUT = 0 V (sourcing) | –5 | 0 | 1.2 | µA |
| IOUT-OFF-SINK | VEN/UVLO = 0V, VOUT = 300 mV (sinking) | 10 | 15 | 20 | ||
| THERMAL SHUT DOWN (TSD) | ||||||
| TSHDN | TSD threshold, rising(1) | 150 | °C | |||
| TSHDNhyst | TSD hysteresis(1) | 10 | °C | |||
| Thermal fault: latched or autoretry | TPS259250, TPS259260 | Latched | ||||
| TPS259251, TPS259261 | Auto-retry | |||||
(1) These parameters are provided for reference only and do not constitute part of TI's published device specifications for purposes of TI's product warranty.
(2) Pulsed testing techniques used during this test maintain junction temperature approximately equal to ambient temperature.
7.6 Timing Requirements
| PARAMETER | TEST CONDITIONS | MIN | TYP | MAX | UNIT | |
|---|---|---|---|---|---|---|
| tOFFdly | Turnoff delay(1) | EN↓ | 0.4 | µs | ||
| dV/dT (OUTPUT RAMP CONTROL) | ||||||
| tdVdT | Output ramp time | TPS25926x, EN/UVLO → H to OUT = 11.7 V, CdVdT = 0 | 0.7 | 1 | 1.3 | ms |
| TPS25925x, EN/UVLO → H to OUT = 4.9 V, CdVdT = 0 | 0.28 | 0.4 | 0.52 | |||
| TPS25926x, EN/UVLO → H to OUT = 11.7 V, CdVdT = 1 nF(1) |
12 | |||||
| TPS25925x, EN/UVLO → H to OUT = 4.9 V, CdVdT = 1 nF(1) |
5 | |||||
| ILIM (CURRENT LIMIT PROGRAMMING) | ||||||
| tFastOffDly | Fast-trip comparator delay(1) | IOUT > IFASTRIP to IOUT= 0 (Switch off) | 300 | ns | ||
| THERMAL SHUTDOWN (TSD) | ||||||
| tTSDdly | Retry delay after TSD recovery, TJ < [TSHDN – 10oC](1) | At VIN = 5 V, TPS259251 and TPS259261 | 110 | ms | ||
| At VIN = 12 V, TPS259251 and TPS259261 | 145 | |||||
(1) These parameters are provided for reference only and do not constitute part of TI's published device specifications for purposes of TI's product warranty.
7.7 Typical Characteristics
TJ = 25°C, VVIN = 12 V for TPS25926x, VVIN = 5 V for TPS25925x, VEN/UVLO = 2 V, RILIM = 100 kΩ, CVIN = 0.1 µF, COUT = 1 µF, CdVdT = OPEN (unless stated otherwise)
| TPS25926x | ||
| TPS25926x | ||
| TPS25926x | ||
| RILIM = 0Ω | ||
| RILIM = 150 kΩ | ||
| RILIM = 150 kΩ | ||
| RILIM = 45.3 kΩ | ||
| TPS25926x, CdVdT = OPEN, COUT = 4.7 µF |
| TPS25926x | ||
| TPS259251/61, VVIN = 5 V |
| TPS25925x/6x, VVIN = 5 V, RILIM = 150 kΩ |
| TPS259251/61 , VVIN = 5 V |
| TPS25926x , VVIN = 12 V, RILIM = 150 kΩ |
| TPS25926x, VVIN = 12 V | ||
| TPS25926x, VVIN = 12 V | ||
| TPS25925x | ||
| TPS25925x | ||
| TPS25925x | ||
| RILIM = OPEN | ||
| RILIM = 100 kΩ | ||
| RILIM = 45.3 kΩ | ||
| RILIM = 100 kΩ | ||
| TPS25925x, CdVdT = OPEN, COUT= 4.7 µF |
| TPS25925x | ||
| TPS259250/60 , VVIN = 5 V |
| TPS25925x/6x, VVIN = 5 V, RILIM = 150 kΩ |
| TPS259251/61 , VVIN = 5 V, CdVdT = 1nF |
| TPS25926x, VVIN = 12 V, CdVdT = 1 nF | ||
| ILOAD stepped From 65% to 125%, back to 65% |
