# TPS25944ARVCR

**Texas Instruments** · Monitors & Reset Circuits · WQFN-20-EP(3x4)

TPS25944ARVCR from Texas Instruments, in a WQFN-20-EP(3x4). 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 | DMODE | input | Diode mode control pin, where a high level activates the non-ideal diode mode; EN, OVP, DMODE, OUT, PGTH, PGOOD and FLT are rated 0 V to 18 V recommended and 20 V absolute maximum. |
| 2 | PGOOD | output | Active-high open-drain power-good output that goes high when PGTH has crossed its threshold, with a 10 mA maximum sink current. |
| 3 | PGTH | input | Positive input of the PGOOD comparator, rated 0 V to 18 V recommended. |
| 4 | OUT | power_out | Power output of the device, requiring at least 0.1 µF of external capacitance and rated 0 V to 18 V recommended. |
| 5 | OUT | power_out | Power output of the device (grouped with pins 4 to 8 in the datasheet table), requiring at least 0.1 µF of external capacitance. |
| 6 | OUT | power_out | Power output of the device (grouped with pins 4 to 8 in the datasheet table), requiring at least 0.1 µF of external capacitance. |
| 7 | OUT | power_out | Power output of the device (grouped with pins 4 to 8 in the datasheet table), requiring at least 0.1 µF of external capacitance. |
| 8 | OUT | power_out | Power output of the device (grouped with pins 4 to 8 in the datasheet table), requiring at least 0.1 µF of external capacitance. |
| 9 | IN | power_in | Power input and supply voltage, recommended 2.7 V to 18 V with 20 V maximum (22 V for 10 ms transient). |
| 10 | IN | power_in | Power input and supply voltage (grouped with pins 9 to 13 in the datasheet table), recommended 2.7 V to 18 V. |
| 11 | IN | power_in | Power input and supply voltage (grouped with pins 9 to 13 in the datasheet table), recommended 2.7 V to 18 V. |
| 12 | IN | power_in | Power input and supply voltage (grouped with pins 9 to 13 in the datasheet table), recommended 2.7 V to 18 V. |
| 13 | IN | power_in | Power input and supply voltage (grouped with pins 9 to 13 in the datasheet table), recommended 2.7 V to 18 V. |
| 14 | EN/UVLO | input | Sets the programmable undervoltage lockout threshold; an undervoltage event opens the internal FET and asserts FLT, and pulling it to GND resets the fault latch on the TPS25942L/TPS25944L. |
| 15 | OVP | input | Sets the programmable overvoltage protection threshold; an overvoltage event opens the internal FET and asserts FLT to indicate overvoltage. |
| 16 | GND | power_in | Ground pin, which must be connected to the exposed PowerPAD and then to a PCB ground plane using multiple vias. |
| 17 | ILIM | bidirectional | A resistor from this pin to GND sets the overload and short-circuit current limit, with 16.9 kΩ to 150 kΩ recommended and 3 V maximum on the pin. |
| 18 | dVdT | bidirectional | A capacitor from this pin to GND sets the output voltage ramp rate, with 470 nF maximum recommended and 10 mA maximum sink current. |
| 19 | IMON | output | Sources a scaled-down ratio of the internal FET current, and a resistor from this pin to GND converts it to a proportional voltage for analog current monitoring, rated 0 V to 6 V recommended. |
| 20 | FLT | output | Open-drain fault indicator that goes low for undervoltage, overvoltage, reverse voltage, circuit breaker timeout (TPS25944 only) and thermal shutdown, rated 0 V to 18 V recommended. |
| 21 | PowerPAD | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | WQFN-20-EP(3x4) |
| Category | Power Management ICs |
| Pins | 21 |

## Electrical characteristics

Limits as printed in the datasheet (page.json `metadata.characteristics` carries them as data).

| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Input voltage (IN, OUT, PGTH, PGOOD, EN, OVP, DMODE, FLT) |  | -0.3 |  | 20 | V |  | 6 |
| IN (10-ms transient) |  |  |  | 22 | V | 10-ms transient | 6 |
| dVdT, ILIM voltage |  | -0.3 |  | 3.6 | V |  | 6 |
| IMON voltage |  | -0.3 |  | 7 | V |  | 6 |
| Sink current PGOOD, FLT, dVdT |  |  |  | 10 | mA |  | 6 |
| Maximum junction temperature | TJ | -40 |  | 150 | °C |  | 6 |
| Storage temperature | Tstg | -65 |  | 150 | °C |  | 6 |
| Input voltage IN |  | 2.7 |  | 18 | V |  | 6 |
| Input voltage EN, OVP, DMODE, OUT, PGTH, PGOOD, FLT |  | 0 |  | 18 | V |  | 6 |
| dVdT, ILIM voltage |  | 0 |  | 3 | V |  | 6 |
| IMON voltage |  | 0 |  | 6 | V |  | 6 |
| Resistance ILIM |  | 16.9 |  | 150 | kΩ |  | 6 |
| Operating junction temperature | TJ | -40 | 25 | 125 | °C |  | 6 |
| Operating input voltage | V(IN) | 2.7 |  | 18 | V |  | 7 |
| Internal UVLO threshold, rising | V(UVR) | 2.2 | 2.3 | 2.4 | V |  | 7 |
| Internal UVLO hysteresis | V(UVRhys) | 105 | 116 | 125 | mV |  | 7 |
| Supply current, enabled | IQ(ON) | 140 | 210 | 300 | µA | V(EN/UVLO) = 2 V, V(IN) = 3 V | 7 |
| Supply current, enabled | IQ(ON) | 140 | 199 | 260 | µA | V(EN/UVLO) = 2 V, V(IN) = 12 V | 7 |
| Supply current, enabled | IQ(ON) | 140 | 202 | 270 | µA | V(EN/UVLO) = 2 V, V(IN) = 18 V | 7 |
| Supply current, disabled | IQ(OFF) | 4 | 8.6 | 15 | µA | V(EN/UVLO) = 0 V, V(IN) = 3 V | 7 |
| Supply current, disabled | IQ(OFF) | 6 | 15 | 20 | µA | V(EN/UVLO) = 0 V, V(IN) = 12 V | 7 |
| Supply current, disabled | IQ(OFF) | 8 | 18.5 | 25 | µA | V(EN/UVLO) = 0 V, V(IN) = 18 V | 7 |
| EN/UVLO threshold voltage, rising | V(ENR) | 0.97 | 0.99 | 1.01 | V |  | 7 |
| EN/UVLO threshold voltage, falling | V(ENF) | 0.9 | 0.92 | 0.94 | V |  | 7 |
| EN threshold voltage for low IQ shutdown, falling | V(SHUTF) | 0.3 | 0.47 | 0.63 | V |  | 7 |
| Overvoltage threshold voltage, rising | V(OVPR) | 0.97 | 0.99 | 1.01 | V |  | 7 |
| Overvoltage threshold voltage, falling | V(OVPF) | 0.9 | 0.92 | 0.94 | V |  | 7 |
| DMODE threshold voltage, rising | V(DMODE) | 1.6 | 1.85 | 2 | V |  | 7 |
| DMODE threshold voltage, falling | V(DMODE) | 0.8 | 0.96 | 1.1 | V |  | 7 |
| DMODE input leakage current | I(DMODE) | 0.6 | 1 | 1.25 | µA | 0.2 V ≤ V(DMODE) ≤ 18 V | 7 |
| dVdT charging current | I(dVdT) | 0.85 | 1 | 1.15 | µA | V(dVdT) = 0 V | 7 |
| dVdT discharging resistance | R(dVdT) | 16 |  | 24 | Ω | EN/UVLO = 0 V, I(dVdT) = 10 mA sinking | 7 |
| dVdT maximum capacitor voltage | V(dVdTmax) | 2.6 | 2.88 | 3.1 | V |  | 7 |
| dVdT to OUT gain | GAIN(dVdT) | 11.65 | 11.9 | 12.05 | V/V |  | 7 |
| Current limit, R(ILIM) = 150 kΩ | I(FAULT) | 0.53 | 0.58 | 0.63 | A | R(ILIM) = 150 kΩ, (V(IN), V(OUT)) = 1 V | 8 |
| Current limit, R(ILIM) = 88.7 kΩ | I(FAULT) | 0.9 | 0.99 | 1.07 | A | R(ILIM) = 88.7 kΩ, (V(IN), V(OUT)) = 1 V | 8 |
| Current limit, R(ILIM) = 42.2 kΩ | I(FAULT) | 1.92 | 2.08 | 2.25 | A | R(ILIM) = 42.2 kΩ, (V(IN), V(OUT)) = 1 V | 8 |
| Current limit, R(ILIM) = 24.9 kΩ | I(FAULT) | 3.25 | 3.53 | 3.81 | A | R(ILIM) = 24.9 kΩ, (V(IN), V(OUT)) = 1 V | 8 |
| Current limit, R(ILIM) = 20 kΩ | I(FAULT) | 4.09 | 4.45 | 4.81 | A | R(ILIM) = 20 kΩ, (V(IN), V(OUT)) = 1 V | 8 |
| Current limit, R(ILIM) = 16.9 kΩ | I(FAULT) | 4.78 | 5.2 | 5.62 | A | R(ILIM) = 16.9 kΩ, (V(IN), V(OUT)) = 1 V | 8 |
| Current limit, R(ILIM) open | I(FAULT) | 0.35 | 0.45 | 0.55 | A | R(ILIM) = OPEN, open resistor current limit (single point failure test: UL60950) | 8 |
| Current limit, R(ILIM) shorted | I(FAULT) | 0.55 | 0.67 | 0.8 | A | R(ILIM) = SHORT, shorted resistor current limit (single point failure test: UL60950) | 8 |
| Short-circuit current limit | I(OS) | 1.91 | 2.07 | 2.24 | A | R(ILIM) = 42.2 kΩ, V(VIN) = 12 V, (V(IN), V(OUT)) = 5 V | 8 |
| Short-circuit current limit | I(OS) | 3.21 | 3.49 | 3.77 | A | R(ILIM) = 24.9 kΩ, V(VIN) = 12 V, (V(IN), V(OUT)) = 5 V | 8 |
| Short-circuit current limit | I(OS) | 4.7 | 5.11 | 5.52 | A | R(ILIM) = 16.9 kΩ, V(VIN) = 12 V, (V(IN), V(OUT)) = 5 V, -40°C ≤ TJ ≤ +85°C | 8 |
| Gain factor I(IMON):I(OUT) | GAIN(IMON) | 47.78 | 52.3 | 57.23 | µA/A | 1 A ≤ I(OUT) ≤ 5 A | 8 |
| IN to OUT ON resistance | RON | 34 | 42 | 49 | mΩ | 1 A ≤ I(OUT) ≤ 5 A, TJ = 25°C | 8 |
| IN to OUT ON resistance | RON | 26 | 42 | 58 | mΩ | 1 A ≤ I(OUT) ≤ 5 A, -40°C ≤ TJ ≤ +85°C | 8 |
| IN to OUT ON resistance | RON | 26 | 42 | 64 | mΩ | 1 A ≤ I(OUT) ≤ 5 A, -40°C ≤ TJ ≤ +125°C | 8 |
| OUT leakage current in off state, sourcing | Ilkg(OUT) | -2 | 0 | 2 | µA | V(IN) = 18 V, V(EN/UVLO) = 0 V, V(OUT) = 0 V (sourcing) | 8 |
| OUT leakage current in off state, sinking | Ilkg(OUT) | 6 | 13 | 20 | µA | V(IN) = 2.7 V, V(EN/UVLO) = 0 V, V(OUT) = 18 V (sinking) | 8 |
| V(IN), V(OUT) threshold for reverse protection comparator, falling | V(REVTH) | -15 | -9.3 | -3 | mV |  | 8 |
| V(IN), V(OUT) threshold for reverse protection comparator, rising | V(FWDTH) | 86 | 100 | 114 | mV |  | 8 |
| FLT internal pull-down resistance | R(FLT) | 10 | 18 | 30 | Ω | V(OVP) = 2 V, I(FLT) = 5 mA sinking | 8 |
| PGTH threshold voltage, rising | V(PGTHR) | 0.97 | 0.99 | 1.01 | V |  | 8 |
| PGTH threshold voltage, falling | V(PGTHF) | 0.9 | 0.92 | 0.94 | V |  | 8 |
| Output ramp time, EN/UVLO rising to V(OUT) = 11 V | tdVdT | 0.25 | 0.37 | 0.5 | ms | EN/UVLO ↑ to V(OUT) = 11 V, with C(dVdT) = open | 9 |
| Junction-to-ambient thermal resistance | RθJA |  | 38.1 |  | °C/W |  | 6 |
| Junction-to-board thermal resistance | RθJB |  | 13.6 |  | °C/W |  | 6 |
| Junction-to-case (bottom) thermal resistance | RθJCbot |  | 3.4 |  | °C/W |  | 7 |

## CAD (KiCad official)

- Symbol: `TPS25944ARVCR`
- Footprint: `Package_DFN_QFN:QFN-20-1EP_3x4mm_P0.5mm_EP1.65x2.65mm`
- 3D model: WQFN-20-EP(3x4) (KiCad packages3D, STEP)
- 3D model files: `tps25944arvcr-etched.step` / `tps25944arvcr-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `tps25944arvcr.step` / `tps25944arvcr.glb` are the bare package body.

## Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

- **Datasheet:** [Texas Instruments datasheet](https://www.ti.com/lit/ds/symlink/tps25944arvcr.pdf) (56 pp, sha256 `11ee4de5549f6957`, retrieved 2026-10-29, tier: manufacturer)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-5-5` (text), consensus `claude-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).

[Datasheet PDF](docs/tps25944arvcr-datasheet.pdf)