# LM2696MXAX

**Texas Instruments** · DC-DC Converters · HTSSOP-16-EP

LM2696MXAX from Texas Instruments, in a HTSSOP-16-EP. 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 | SW | power_out | Switching node of the internal high-side NMOS switch, which connects to the inductor; CBOOT to SW is rated −0.3 V to +7 V. |
| 2 | SW | power_out | Switching node of the internal high-side NMOS switch, which connects to the inductor; CBOOT to SW is rated −0.3 V to +7 V. |
| 3 | SW | power_out | Switching node of the internal high-side NMOS switch, which connects to the inductor; CBOOT to SW is rated −0.3 V to +7 V. |
| 4 | CBOOT | passive | Bootstrap capacitor input, rated −0.3 V to +33 V to GND. |
| 5 | AVIN | power_in | Analog voltage input, specified for 4.5 V to 24 V to GND. |
| 6 | EXTVCC | power_out | Output of the internal regulator for decoupling, 3.30 V to 4.00 V (3.65 V typical). |
| 7 | FB | input | Feedback signal from the output; the FB pin voltage is 1.225 V to 1.282 V and the pin is rated −0.3 V to +7 V. |
| 8 | N/C | unconnected | No connect pin. |
| 9 | GND | power_in | Ground pin. |
| 10 | SS | passive | Soft-start pin, which sources 0.7 µA to 1.4 µA (1 µA typical) at VSS = 0 V; rated −0.3 V to +7 V. |
| 11 | PGOOD | output | Power-good flag, open-drain output; the PGOOD threshold is 91.5% to 95.5% of VFB (rising) and the pin is rated −0.3 V to +7 V. |
| 12 | RON | passive | Sets the switch on-time dependent on current; the RON voltage is 0.35 V to 0.95 V. |
| 13 | SD | input | Shutdown pin with TTL-compatible shutdown thresholds; rated −0.3 V to +7 V. |
| 14 | PVIN | power_in | Power voltage input, specified for 4.5 V to 24 V; PVIN is rated −0.3 V to (AVIN + 0.3 V). |
| 15 | PVIN | power_in | Power voltage input, specified for 4.5 V to 24 V; PVIN is rated −0.3 V to (AVIN + 0.3 V). |
| 16 | PVIN | power_in | Power voltage input, specified for 4.5 V to 24 V; PVIN is rated −0.3 V to (AVIN + 0.3 V). |
| 17 | EP | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | HTSSOP-16-EP |
| Category | Power Supply Chip |
| Pins | 17 |

## CAD (KiCad official)

- Symbol: `LM2696MXAX`
- Footprint: `Package_SO:TSSOP-16-1EP_4.4x5mm_P0.65mm`
- 3D model: HTSSOP-16-EP (KiCad packages3D, STEP)
- 3D model files: `lm2696mxax-etched.step` / `lm2696mxax-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `lm2696mxax.step` / `lm2696mxax.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/lm2696) (31 pp, sha256 `80fab7475a47eef4`, retrieved 2026-10-11, 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/lm2696mxax-datasheet.pdf)