LM5161PWPR
Public Unreviewedby Ray
Texas Instruments DC-DC Converters, HTSSOP-14-EP. Datasheet-verified pinout, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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README
markdownLM5161PWPR
Texas Instruments · DC-DC Converters · HTSSOP-14-EP
LM5161PWPR from Texas Instruments, in a HTSSOP-14-EP. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.
Pinout
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | AGND | power_in | Analog ground. Ground connection of internal control circuits. |
| 2 | PGND | power_in | Power ground. Ground connection of the internal synchronous rectifier FET. |
| 3 | VIN | power_in | Input supply connection. Operating input range is 4.5 V to 100 V. |
| 4 | EN/UVLO | input | Precision enable. Input pin of undervoltage lockout (UVLO) comparator. |
| 5 | RON | input | On-time programming pin. A resistor between this pin and VIN sets the switch ON-time as a function of input voltage. |
| 6 | SS | input | Soft start. Connect a capacitor from SS to AGND to control output rise time and limit overshoot. |
| 7 | NC | unconnected | No connection. |
| 8 | FPWM | input | Forced PWM logic input pin. Connect to AGND for discontinuous conduction mode (DCM) with light loads. Connect to VCC for continuous conduction mode (CCM) at all loads and Fly-Buck configuration. |
| 9 | FB | input | Feedback input of voltage regulation comparator. Internal reference is 1.2 V (±1%). |
| 10 | VCC | power_out | Internal high voltage start-up regulator bypass capacitor pin. Typical output 7.3 V; can also be biased externally from 9 V to 13 V. |
| 11 | BST | input | Bootstrap capacitor pin. Connect a capacitor between BST and SW to bias gate driver of high-side buck FET. |
| 12 | SW | output | Switch node. Source connection of high side buck FET and drain connection of low-side synchronous rectifier FET. |
| 13 | SW | output | Switch node. Source connection of high side buck FET and drain connection of low-side synchronous rectifier FET. |
| 14 | NC | unconnected | No connection. |
| EP | EP | power_in | Exposed pad. Connect to AGND and printed-circuit board ground plane to improve power dissipation. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | HTSSOP-14-EP |
| Category | PMIC |
| Pins | 15 |
Ordering variants
Same part, different packaging or reel option.
LM5161PWPRLM5161PWPRPWPT
CAD (KiCad official)
- Symbol:
LM5161PWPR - Footprint:
Package_SO:TSSOP-14-1EP_4.4x5mm_P0.65mm - 3D model: HTSSOP-14-EP (KiCad packages3D, STEP)
3D model downloads
Two STEP files. Same geometry, different body top:
| File | Size | Use it when |
|---|---|---|
lm5161pwpr.step |
305 KB | You want the bare part, or you mark your own boards. |
lm5161pwpr-etched.step |
1.7 MB | You want the part with LM5161PWPR already on it. |
The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 445 faces against 99 in the bare model. It survives export, section views, and rendering in any CAD tool, and it drops straight into KiCad or Fusion with no extra setup.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (35 pp, sha256
16a86ea58f6cf516, retrieved 2026-08-17, tier: manufacturer) - Extractor:
ds2sf(Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate. - CAD: KiCad official libraries (CC-BY-SA 4.0).