component
TPS26400RHFR
Public Made by Adomby adom
Texas Instruments Surge Suppressors, VQFN-24(4x5). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownTPS26400RHFR
Texas Instruments · Surge Suppressors · VQFN-24(4x5)
TPS26400RHFR from Texas Instruments, in a VQFN-24(4x5). Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.
Pinout
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | N.C | unconnected | No connect. |
| 2 | N.C | unconnected | No connect. |
| 3 | N.C | unconnected | No connect. |
| 4 | N.C | unconnected | No connect. |
| 5 | N.C | unconnected | No connect. |
| 6 | N.C | unconnected | No connect. |
| 7 | N.C | unconnected | No connect. |
| 8 | IN | power_in | Power input and supply voltage of the device; all IN pins must be connected together, recommended range 4.2 V to 42 V. |
| 9 | IN | power_in | Power input and supply voltage of the device; all IN pins must be connected together, recommended range 4.2 V to 42 V. |
| 10 | UVLO | input | Input for setting the programmable undervoltage lockout threshold; an undervoltage event turns off the internal FET and asserts FLT, and connecting UVLO to RTN selects the internal default threshold. |
| 11 | N.C | unconnected | No connect. |
| 12 | OVP | input | Input for setting the programmable overvoltage protection threshold; an overvoltage event turns off the internal FET and asserts FLT, and connecting OVP to RTN selects the factory-set V(IN) overvoltage trip level. |
| 13 | MODE | input | Mode selection pin for overload fault response: open = circuit breaker with auto-retry, shorted to RTN = active current limiting with auto-retry, 402-kΩ to RTN = current limiting with latch-off. |
| 14 | SHDN | input | Shutdown pin; pulling it low enters low-power shutdown mode (about 20 μA typical), and cycling it resets a device latched off by a fault. |
| 15 | RTN | power_in | Reference for device internal control circuits; connect R(ILIM), C(dVdT), R(IMON), R(MODE), UVLO and OVP resistors to it and do not short it to GND. |
| 16 | N.C | unconnected | No connect. |
| 17 | GND | power_in | Connect GND to system ground. |
| 18 | IMON | output | Analog current monitor output sourcing a scaled-down ratio of the internal FET current (78.4 μA/A typical), converted to voltage by a resistor to RTN; leave floating if unused. |
| 19 | ILIM | bidirectional | A resistor from this pin to RTN sets the overload and short-circuit current limit (recommended 5.36 kΩ to 120 kΩ). |
| 20 | dVdT | bidirectional | A capacitor from this pin to RTN sets the output voltage slew rate; when left floating the internal ramp rate is 23.9 V/1.6 ms. |
| 21 | N.C | unconnected | No connect. |
| 22 | FLT | output | Fault event indicator, open-drain output; leave floating if unused. |
| 23 | OUT | power_out | Power output of the device; all OUT pins must be connected together and to the load. |
| 24 | OUT | power_out | Power output of the device; all OUT pins must be connected together and to the load. |
| 25 | EP | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | VQFN-24(4x5) |
| Category | TVS/Fuse/Board Level Protection |
| Pins | 25 |
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Operating input voltage | V(IN) | 4.2 | 42 | V | 7 | ||
| Internal POR threshold, rising | V(PORR) | 3.9 | 4 | 4.1 | V | 7 | |
| Internal POR hysteresis | V(PORHys) | 250 | 275 | 300 | mV | 7 | |
| Supply current enabled | IQ(ON) | 190 | 300 | 390 | µA | V(SHDN) = 2 V | 7 |
| Supply current shutdown | IQ(OFF) | 11 | 20 | 33 | µA | V(SHDN) = 0 V | 7 |
| Reverse input supply current | I(VINR) | 66 | µA | V(IN) = -42 V, V(OUT) = 0 V | 7 | ||
| Factory set UVLO trip level, rising | V(IN_UVLO) | 14.25 | 14.9 | 15.75 | V | V(IN) rising, V(UVLO) = 0 V | 7 |
| Factory set UVLO trip level, falling | V(IN_UVLO) | 13.25 | 13.8 | 14.75 | V | V(IN) falling, V(UVLO) = 0 V | 7 |
| Internal UVLO select threshold | V(SEL_UVLO) | 180 | 200 | 240 | mV | 7 | |
| UVLO threshold voltage, rising | V(UVLOR) | 1.175 | 1.19 | 1.225 | V | 7 | |
| UVLO threshold voltage, falling | V(UVLOF) | 1.08 | 1.1 | 1.125 | V | 7 | |
| UVLO input leakage current | I(UVLO) | -100 | 0 | 100 | nA | 0 V ≤ V(UVLO) ≤ 42 V | 7 |
| SHDN output voltage | V(SHDN) | 2 | 2.7 | 3.4 | V | I(SHDN) = 0.1 µA | 7 |
| SHDN threshold for low IQ shutdown, falling | V(SHUTF) | 0.55 | 0.76 | 0.94 | V | 7 | |
| SHDN leakage current | I(SHDN) | -10 | µA | V(SHDN) = 0.4 V | 7 | ||
| Factory set OVP trip level, rising | V(IN_OVP) | 31 | 32.6 | 34 | V | V(IN) rising, V(OVP) = 0 V | 7 |
| Factory set OVP trip level, falling | V(IN_OVP) | 28.5 | 30.3 | 31.5 | V | V(IN) falling, V(OVP) = 0 V | 7 |
| Internal OVP select threshold | V(SEL_OVP) | 180 | 200 | 240 | mV | 7 | |
| Overvoltage threshold voltage, rising | V(OVPR) | 1.17 | 1.19 | 1.225 | V | 7 | |
| Overvoltage threshold, falling | V(OVPF) | 1.085 | 1.1 | 1.125 | V | 7 | |
| OVP input leakage current | I(OVP) | -100 | 0 | 100 | nA | 0 V ≤ V(OVP) ≤ 4 V | 7 |
| dVdT charging current | I(dVdT) | 4 | 4.7 | 5.5 | µA | V(dVdT) = 0 V | 7 |
| dVdT discharging resistance | R(dVdT) | 14 | Ω | V(SHDN) = 0 V, with I(dVdT) = 10 mA sinking | 7 | ||
| dVdT to OUT gain | GAIN(dVdT) | 23.75 | 24.6 | 25.5 | V/V | V(OUT)/V(dVdT) | 7 |
| ILIM bias voltage | V(ILIM) | 1 | V | 7 | |||
| Overload current limit | I(OL) | 0.085 | 0.1 | 0.115 | A | R(ILIM) = 120 kΩ, V(IN), V(OUT) = 1 V | 7 |
| Overload current limit | I(OL) | 0.95 | 1 | 1.05 | A | R(ILIM) = 12 kΩ, V(IN), V(OUT) = 1 V | 7 |
| Overload current limit | I(OL) | 1.425 | 1.5 | 1.575 | A | R(ILIM) = 8 kΩ, V(IN), V(OUT) = 1 V | 7 |
| Overload current limit | I(OL) | 2.11 | 2.23 | 2.35 | A | R(ILIM) = 5.36 kΩ, V(IN), V(OUT) = 1 V | 7 |
| Open resistor current limit | I(OL_R-OPEN) | 0.055 | A | R(ILIM) = OPEN, open resistor current limit (single point failure test: UL60950) | 7 | ||
| Shorted resistor current limit | I(OL_R-SHORT) | 0.095 | A | R(ILIM) = SHORT, shorted resistor current limit (single point failure test: UL60950) | 7 | ||
| Circuit breaker detection threshold | I(CB) | 0.045 | 0.073 | 0.11 | A | R(ILIM) = 120 kΩ, MODE = open | 7 |
| Circuit breaker detection threshold | I(CB) | 2 | 2.21 | 2.4 | A | R(ILIM) = 5.36 kΩ, MODE = open | 7 |
| Short-circuit current limit | I(SCL) | 0.08 | 0.1 | 0.12 | A | R(ILIM) = 120 kΩ, V(IN), V(OUT) = 5 V | 8 |
| Short-circuit current limit | I(SCL) | 1.425 | 1.5 | 1.575 | A | R(ILIM) = 8 kΩ, V(IN), V(OUT) = 5 V | 8 |
| Short-circuit current limit | I(SCL) | 2.11 | 2.23 | 2.35 | A | R(ILIM) = 5.36 kΩ, V(IN), V(OUT) = 5 V | 8 |
| Current monitor gain | GAIN(IMON) | 72 | 78.28 | 85 | µA/A | I(IMON): I(OUT), 0.1 A ≤ I(OUT) ≤ 2 A | 8 |
| IN to OUT total ON resistance | RON | 140 | 150 | 160 | mΩ | 0.1 A ≤ I(OUT) ≤ 2 A, TJ = 25°C | 8 |
| IN to OUT total ON resistance | RON | 210 | mΩ | 0.1 A ≤ I(OUT) ≤ 2 A, TJ = 85°C | 8 | ||
| IN to OUT total ON resistance | RON | 80 | 150 | 250 | mΩ | 0.1 A ≤ I(OUT) ≤ 2 A, -40°C ≤ TJ ≤ +125°C | 8 |
| OUT leakage current in Off state | Ilkg(OUT) | 12 | µA | V(IN) = 42 V, V(SHDN)= 0 V, V(OUT) = 0 V, sourcing | 8 | ||
| OUT leakage current in Off state | Ilkg(OUT) | 11 | µA | V(IN) = 0 V, V(SHDN)= 0 V, V(OUT) = 24 V, sinking | 8 | ||
| OUT leakage current in Off state | Ilkg(OUT) | 50 | µA | V(IN) = -42 V, V(SHDN)= 0 V, V(OUT) = 0 V, sinking | 8 | ||
| Reverse protection comparator threshold, falling | V(REVTH) | -15 | -10 | -5 | mV | V(IN), V(OUT), falling | 8 |
| Forward threshold, rising | V(FWDTH) | 85 | 96 | 110 | mV | V(IN), V(OUT), rising | 8 |
| FLT pull-down resistance | R(FLT) | 40 | 85 | 160 | Ω | V(OVP) = 2 V, I(FLT) = 5 mA sinking | 8 |
| FLT input leakage current | I(FLT) | -200 | 200 | nA | 0 V ≤ V(FLT) ≤ 42 V | 8 | |
| TSD threshold, rising | T(TSD) | 157 | ºC | 8 | |||
| TSD hysteresis | T(TSDhyst) | 10 | ºC | 8 | |||
| UVLO turnon delay | UVLO_tON(dly) | 250 | µs | UVLO↑ (100 mV above V(UVLOR)) to V(OUT) = 100 mV, C(dvdt) = open | 9 | ||
| UVLO turnoff delay | UVLO_toff(dly) | 10 | µs | UVLO↓ (100 mV below V(UVLOF)) to FLT↓ | 9 | ||
| SHUTDOWN exit delay | tSD(dly) | 250 | µs | SHDN↑ to V(OUT) = 100 mV, C(dvdt) = open | 9 | ||
| SHUTDOWN entry delay | tSD(dly) | 10 | µs | SHDN↓ (below V(SHUTF)) to FLT↓ | 9 | ||
| OVP exit delay | tOVP(dly) | 200 | µs | OVP↓ (20 mV below V(OVPF)) to V(OUT) = 100 mV | 9 | ||
| OVP disable delay | tOVP(dly) | 6 | µs | OVP↑ (20 mV above V(OVPR)) to FLT↓ | 9 | ||
| Fast-trip comparator delay | tFASTTRIP(dly) | 250 | ns | I(OUT) > I(FASTRIP) | 9 | ||
| Retry delay in TSD | tretry | 512 | ms | 9 | |||
| Output ramp time | tdVdT | 1.6 | ms | SHDN↑ to V(OUT) = 23.9 V, with C(dVdT) = open | 9 | ||
| Input voltage (absolute max) IN, IN-OUT | IN | -45 | 45 | V | 5 | ||
| Input voltage 10 ms transient | IN | -55 | 55 | V | IN, IN-OUT (10 ms transient), TA = 25°C | 5 | |
| IN, OUT, FLT, UVLO, SHDN to RTN | -0.3 | 45 | V | 5 | |||
| OVP, dVdT, ILIM, IMON, MODE to RTN | -0.3 | 5 | V | 5 | |||
| RTN voltage | RTN | -45 | 0.3 | V | 5 | ||
| Sink current IFLT, IdVdT, ISHDN | 10 | mA | 5 | ||||
| Operating junction temperature (abs max) | TJ | -40 | 150 | °C | 5 | ||
| Storage temperature | Tstg | -65 | 150 | °C | 5 | ||
| Input voltage IN (recommended) | IN | -42 | 42 | V | 5 | ||
| ILIM resistance | ILIM | 5.36 | 120 | kΩ | 5 | ||
| Operating junction temperature | TJ | -40 | 25 | 125 | °C | 5 | |
| Junction-to-ambient thermal resistance | RθJA | 30.2 | °C/W | RHF (VQFN) 24 pins | 6 |
CAD (KiCad official)
- Symbol:
TPS26400RHFR - Footprint:
Package_DFN_QFN:QFN-24-1EP_4x5mm_P0.5mm_EP2.65x3.65mm - 3D model: VQFN-24(4x5) (KiCad packages3D, STEP)
- 3D model files:
tps26400rhfr-etched.step/tps26400rhfr-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);tps26400rhfr.step/tps26400rhfr.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (56 pp, sha256
6532dc40aab68268, retrieved 2026-10-22, tier: lcsc) - Datasheet language: Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
- Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-sonnet-5-5(text), consensusclaude-sonnet-5-5(agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish. - CAD: KiCad official libraries (CC-BY-SA 4.0).