# LM25037QMTX

**Texas Instruments** · AC-DC Controllers And Regulators · TSSOP-16

LM25037QMTX from Texas Instruments, in a TSSOP-16. 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 | RAMP | input | Modulation ramp input to PWM comparator, reset to ground at end of each cycle by internal FET. |
| 2 | UVLO | input | Line undervoltage lockout input with 0.45V shutdown and 1.25V standby thresholds. |
| 3 | COMP | bidirectional | Error amplifier output and PWM comparator input with internal 1.25V reference on noninverting input. |
| 4 | FB | input | Feedback input to error amplifier inverting input; connect to AGND for isolated applications. |
| 5 | RT2 | input | Oscillator dead-time control resistor to AGND; sets forced dead-time between alternating output switching periods. |
| 6 | AGND | power_in | Analog ground reference; must connect directly to Power Ground. |
| 7 | RT1 | input | Oscillator maximum on-time control resistor to AGND; sum with RT2-set dead-time determines oscillator period. |
| 8 | CS | input | Current sense input; 250mV cycle-by-cycle current limit threshold with 65ns leading edge blanking. |
| 9 | RES | bidirectional | Restart timer; sources 18µA when cycle-by-cycle limit reached; 2V threshold fully discharges soft-start capacitor. |
| 10 | SS | input | Soft-start capacitor charge control; 100µA internal current source reduced to 1µA after restart event. |
| 11 | PGND | power_in | Power ground reference; must connect directly to Analog Ground. |
| 12 | OUTB | output | Alternating gate drive output capable of 1.2A peak source and sink current. |
| 13 | OUTA | output | Alternating gate drive output capable of 1.2A peak source and sink current. |
| 14 | VCC | power_in | Voltage supply input/output; internally regulated to 7.7V with 0.47µF minimum decoupling capacitor. |
| 15 | REF | output | 5V reference output with 10mA typical maximum output current. |
| 16 | VIN | power_in | Input voltage source; operates from 5.5V to 75V supply range. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | TSSOP-16 |
| Category | Power Management (PMIC) |
| Pins | 16 |

## CAD (KiCad official)

- Symbol: `LM25037QMTX`
- Footprint: `Package_SO:TSSOP-16_4.4x5mm_P0.65mm`
- 3D model: TSSOP-16 (KiCad packages3D, STEP)
- 3D model files: `lm25037qmtx-etched.step` / `lm25037qmtx-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `lm25037qmtx.step` / `lm25037qmtx.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/lm25037) (39 pp, sha256 `d21d69eae4ebea14`, retrieved 2026-10-07, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-4-5-20251001` (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/lm25037qmtx-datasheet.pdf)