# PAM2312AABADJ

**Diodes Incorporated** · DC-DC Converters · TSOT-25

PAM2312AABADJ from Diodes Incorporated, in a TSOT-25. 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 | EN | input | Enable control input: forcing the pin above 1.5V enables the chip, and pulling it below 0.3V shuts the device down. |
| 2 | GND | power_in | Ground reference for the device; all voltages are specified with respect to ground. |
| 3 | SW | output | Drains of the internal main and synchronous power MOSFETs (switching node); absolute maximum SW pin voltage is -0.3 V to (VIN + 0.3) V. |
| 4 | VIN | power_in | Chip main power supply pin, operating over 2.5V to 5.5V with an absolute maximum input voltage of 6.0V. |
| 5 | VOUT/FB | input | In the adjustable version this is the FB pin, the feedback input to the internal error amplifier with a 0.6V threshold voltage (in fixed-output versions it is the VOUT sense pin feeding an internal resistive divider). |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Diodes Incorporated |
| Package | TSOT-25 |
| 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 Range | VIN | 2.5 |  | 5.5 | V |  | 4 |
| Regulated Feedback Voltage | VFB | 0.588 | 0.6 | 0.612 | V |  | 4 |
| Regulated Output Voltage Accuracy | VO | -3 |  | 3 | % | IO = 100mA | 4 |
| Output Voltage Line Regulation | LNR |  | 0.2 | 0.5 | %/V | VIN = 2.5V to 5v, IO = 10mA | 4 |
| Output Voltage Load Regulation | LDR |  | 0.5 | 1.5 | % | IO = 800mA | 4 |
| Quiescent Current | IQ |  | 40 | 70 | µA | No Load | 4 |
| Shutdown Current | ISD |  |  | 1 | µA | VEN = 0V | 4 |
| Oscillator Frequency | fOSC | 1.2 | 1.5 | 1.8 | MHz | VO = 100% | 4 |
| Drain-Source On-State Resistance (P MOSFET) | RDS(ON) |  | 0.3 | 0.45 | Ω | IDS = 100mA | 4 |
| Drain-Source On-State Resistance (N MOSFET) | RDS(ON) |  | 0.35 | 0.5 | Ω | IDS = 100mA | 4 |
| SW Leakage Current | ILSW |  |  | 1 | µA |  | 4 |
| EN Threshold High | VEH | 1.5 |  |  | V |  | 4 |
| EN Threshold Low | VEL |  |  | 0.3 | V |  | 4 |
| Input Voltage (absolute maximum) |  | -0.3 |  | 6 | V |  | 3 |
| EN, FB Pin Voltage (absolute maximum) |  | -0.3 |  |  | V |  | 3 |
| SW Pin Voltage (absolute maximum) |  | -0.3 |  |  | V |  | 3 |
| Junction Temperature (absolute maximum) |  |  |  | 150 | °C |  | 3 |
| Storage Temperature Range |  | -65 |  | 150 | °C |  | 3 |
| Soldering Temperature |  |  |  | 300 | °C | 5s | 3 |
| Supply Voltage |  | 2.5 |  | 5.5 | V |  | 3 |
| Operation Temperature Range |  | -40 |  | 85 | °C |  | 3 |
| Junction Temperature Range |  | -40 |  | 125 | °C |  | 3 |
| Thermal Resistance (Junction to Case) | θJC |  |  | 130 | °C/W | TSOT25 (Note 4) | 3 |
| Thermal Resistance (Junction to Ambient) | θJA |  |  | 250 | °C/W | TSOT25 | 3 |
| Internal Power Dissipation | PD |  |  | 400 | mW | TSOT25 | 3 |

## CAD (KiCad official)

- Symbol: `PAM2312AABADJ`
- Footprint: `Package_TO_SOT_SMD:TSOT-23-5`
- 3D model: TSOT-25 (KiCad packages3D, STEP)
- 3D model files: `pam2312aabadj-etched.step` / `pam2312aabadj-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `pam2312aabadj.step` / `pam2312aabadj.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Diodes Incorporated datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588881847849377792) (14 pp, sha256 `c63f6ed90bae0a6e`, retrieved 2026-10-16, tier: lcsc)
- **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/pam2312aabadj-datasheet.pdf)