# TPS62243QDDCRQ1

**Texas Instruments** · DC-DC Converters · SOT-23-5

TPS62243QDDCRQ1 from Texas Instruments, in a SOT-23-5. 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 | VIN | power_in | VIN power supply pin; the recommended supply voltage range is 2 V to 6 V, and the absolute maximum input voltage is 7 V. |
| 2 | GND | power_in | GND supply pin. |
| 3 | EN | input | Enable pin: pulling it low forces the device into shutdown mode and pulling it high enables the device, and this pin must be terminated. |
| 4 | FB | input | Feedback pin for the internal regulation loop; connect the external resistor divider to this pin, or for the fixed-output-voltage option connect it directly to the output capacitor. |
| 5 | SW | output | Switch pin connected to the internal MOSFET switches; connect the inductor to this terminal. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SOT-23-5 |
| Category | Power Management (PMIC) |
| Pins | 5 |

## 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 | VI | -0.3 |  | 7 | V |  | 3 |
| Voltage at EN |  | -0.3 |  |  | V | max VIN + 0.3, ≤7 V | 3 |
| Voltage on SW |  | -0.3 |  | 7 | V |  | 3 |
| Maximum operating junction temperature | TJ | -40 |  | 150 | °C |  | 3 |
| Storage temperature | Tstg | -65 |  | 150 | °C |  | 3 |
| Supply voltage, VIN | VI | 2 |  | 6 | V |  | 4 |
| Output current, 2.3V < VIN < 6V | IOUT |  |  | 300 | mA | 2.3V < VIN < 6V | 4 |
| Output current, 2V ≤ VIN ≤ 2.3V | IOUT |  |  | 150 | mA | 2V ≤ VIN ≤ 2.3V | 4 |
| Inductance | L | 1.5 |  | 4.7 | µH |  | 4 |
| Output capacitance | COUT | 4.7 |  | 10 | µF |  | 4 |
| Operating junction temperature | TJ | -40 |  | 125 | °C |  | 4 |
| Shutdown current into VIN | ISD |  | 0.1 | 1 | μA | EN = GND, TJ = 25°C | 5 |
| Shutdown current into VIN | ISD |  |  | 10 | μA | EN = GND | 5 |
| High-level input voltage, EN | VIH | 1 |  |  | V | 2 V ≤ VIN ≤ 6 V | 5 |
| Low-level input voltage, EN | VIL | 0 |  | 0.35 | V | 2 V ≤ VIN ≤ 6 V, | 5 |
| Input bias current, EN | IIN |  | 0.01 | 1 | μA | EN, MODE = GND or VIN | 5 |
| High-side MOSFET ON-resistance | RDS(on) |  | 240 | 480 | mΩ | VIN = VGS = 3.6 V, TJ = 25°C | 5 |
| Low-side MOSFET ON-resistance | RDS(on) |  | 180 | 380 | mΩ |  | 5 |
| Forward current limit, high-side and low-side | ILIMF | 0.54 |  | 0.95 | A | VIN = VGS = 3.6 V | 5 |
| Oscillator frequency | ƒSW | 2 | 2.25 | 2.5 | MHz | 2 V ≤ VIN ≤ 6 V, PWM Mode | 5 |
| Feedback voltage | VFB | -1.5 | 0 | 1.5 | % | PWM operation, 2 V ≤ VIN ≤ 6 V, in fixed output voltage versions VFB = VOUT, See (1), TJ = 25°C | 5 |
| Feedback voltage | VFB | -1.5 |  | 2.5 | % | PWM operation, 2 V ≤ VIN ≤ 6 V, in fixed output voltage versions VFB = VOUT, See (1) | 5 |
| Leakage current into SW pin | Ilkg |  | 0.1 | 1 | μA | VIN = 3.6 V, VIN = VOUT = VSW, EN = GND, TJ = 25°C | 5 |
| Leakage current into SW pin | Ilkg |  |  | 10 | μA | VIN = 3.6 V, VIN = VOUT = VSW, EN = GND, (2) | 5 |
| Junction-to-ambient thermal resistance | RθJA |  | 193.7 |  | °C/W |  | 4 |
| Junction-to-case (top) thermal resistance | RθJC(top) |  | 40.7 |  | °C/W |  | 4 |
| Junction-to-board thermal resistance | RθJB |  | 35 |  | °C/W |  | 4 |
| Junction-to-top characterization parameter | ψJT |  | 0.9 |  | °C/W |  | 4 |
| Junction-to-board characterization parameter | ψJB |  | 34.7 |  | °C/W |  | 4 |

## CAD (KiCad official)

- Symbol: `TPS62243QDDCRQ1`
- Footprint: `Package_TO_SOT_SMD:SOT-23-5`
- 3D model: SOT-23-5 (KiCad packages3D, STEP)
- 3D model files: `tps62243qddcrq1-etched.step` / `tps62243qddcrq1-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `tps62243qddcrq1.step` / `tps62243qddcrq1.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/cn/lit/gpn/tps62244-q1) (27 pp, sha256 `882d2537ac250cbc`, retrieved 2026-10-08, 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`, 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/tps62243qddcrq1-datasheet.pdf)