# LM5022QDGSRQ1

**Texas Instruments** · DC-DC Converters · VSSOP-10-0.5mm

LM5022QDGSRQ1 from Texas Instruments, in a VSSOP-10-0.5mm. 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 | Source input voltage for the start-up regulator operating from 6 V to 60 V. |
| 2 | FB | input | Inverting input to the internal voltage error amplifier with non-inverting input connecting to 1.25-V reference. |
| 3 | COMP | output | Error amplifier output and PWM comparator input; control loop compensation components connect between this pin and FB pin. |
| 4 | VCC | power_out | Output of the internal high-voltage linear regulator; bypass to GND pin with ceramic capacitor. |
| 5 | OUT | output | Output of MOSFET gate driver with 1-A peak current capability; connect to external MOSFET gate. |
| 6 | GND | power_in | System ground. |
| 7 | UVLO | input | Undervoltage lockout input; set start-up and shutdown levels via resistor divider with 20-µA hysteresis current source. |
| 8 | CS | input | Current sense input for switch current used in current mode control and current limiting. |
| 9 | RT/SYNC | input | Oscillator frequency adjust pin and external synchronization input; external resistor to GND sets frequency or AC-coupled clock input for synchronization. |
| 10 | SS | input | Soft-start pin; external capacitor to ground charged by 10-µA current source creates ramp voltage for regulator start-up. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | VSSOP-10-0.5mm |
| Category | Power Management (PMIC) |
| Pins | 10 |

## CAD (KiCad official)

- Symbol: `LM5022QDGSRQ1`
- Footprint: `Package_SO:MSOP-10_3x3mm_P0.5mm`
- 3D model: VSSOP-10-0.5mm (KiCad packages3D, STEP)
- 3D model files: `lm5022qdgsrq1-etched.step` / `lm5022qdgsrq1-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `lm5022qdgsrq1.step` / `lm5022qdgsrq1.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/lm5022-q1) (37 pp, sha256 `cc533fcb10693cd9`, retrieved 2026-10-03, 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-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/lm5022qdgsrq1-datasheet.pdf)