component
LM46000PWPR
Public Made by Adomby adom
Texas Instruments DC-DC Converters, HTSSOP-16-EP. Datasheet-verified pinout, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownLM46000PWPR
Texas Instruments · DC-DC Converters · HTSSOP-16-EP
LM46000PWPR from Texas Instruments, in a HTSSOP-16-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 | SW | output | Switching output of the regulator internally connected to both power MOSFETs; connect to power inductor. |
| 2 | SW | output | Switching output of the regulator internally connected to both power MOSFETs; connect to power inductor. |
| 3 | CBOOT | passive | Bootstrap capacitor connection for high-side driver; connect a high-quality 470-nF capacitor from CBOOT to SW. |
| 4 | VCC | power_out | Internal bias supply output for bypassing; connect bypass capacitor from this pin to AGND and do not connect external load. |
| 5 | BIAS | power_in | Optional internal LDO supply input for 3.3 V ≤ VOUT ≤ 28 V with bypass capacitor (1 to 10 µF), or tie to ground when VOUT < 3.3 V. |
| 6 | SYNC | input | Clock input to synchronize switching action to external clock with frequency range 200 kHz to 2.2 MHz; use high-speed termination. |
| 7 | RT | passive | Resistor connection to AGND to program switching frequency from 200 kHz to 2.2 MHz, or leave floating for 500-kHz default. |
| 8 | PGOOD | tri_state | Open-drain output for power-good flag indicating VOUT regulation status; use 10-kΩ to 100-kΩ pullup resistor to voltage not exceeding 12 V. |
| 9 | FB | input | Feedback sense input pin connected to midpoint of feedback divider to set VOUT; do not short to ground during operation. |
| 10 | AGND | power_in | Analog ground pin serving as ground reference for internal references and logic; connect to system ground. |
| 11 | SS/TRK | input | Soft-start control pin for internal 4.1 ms soft-start time, extendable via external capacitor, or trackable via external voltage ramp. |
| 12 | EN | input | Enable input controlling ON/OFF functionality; high enables operation, low (<0.4 V) shuts down; do not float. |
| 13 | VIN | power_in | Supply input pin to internal LDO and high-side power FET with operating range 3.5 V to 60 V. |
| 14 | VIN | power_in | Supply input pin to internal LDO and high-side power FET with operating range 3.5 V to 60 V. |
| 15 | PGND | power_in | Power ground pin connected to low-side power FET; connect to system ground, PAD, AGND, and CIN/COUT grounds. |
| 16 | PGND | power_in | Power ground pin connected to low-side power FET; connect to system ground, PAD, AGND, and CIN/COUT grounds. |
| 17 | PAD | power_in | Thermal pad providing low-impedance ground connection and major heat dissipation path; must be used for heat sinking to ground plane. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | HTSSOP-16-EP |
| Category | Power Supply Chip |
| Pins | 17 |
CAD (KiCad official)
- Symbol:
LM46000PWPR - Footprint:
Package_SO:TSSOP-16-1EP_4.4x5mm_P0.65mm - 3D model: HTSSOP-16-EP (KiCad packages3D, STEP)
- 3D model files:
lm46000pwpr-etched.step/lm46000pwpr-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);lm46000pwpr.step/lm46000pwpr.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (56 pp, sha256
aa402663c9468ce0, retrieved 2026-09-23, 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 0.2, primaryclaude-haiku-4-5-20251001(text), consensusclaude-sonnet-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).