component
LM43601PWPR
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
markdownLM43601PWPR
Texas Instruments · DC-DC Converters · HTSSOP-16-EP
LM43601PWPR 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 | power_out | 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, do not connect external load or short to ground during operation. |
| 5 | BIAS | input | Optional internal LDO supply input; tie to VOUT when 3.3 V ≤ VOUT ≤ 28 V or external 3.3 V/5 V rail, place bypass capacitor 1 to 10 µF to ground, tie to ground when not in use. |
| 6 | SYNC | input | Clock input to synchronize switching action to external clock from 200 kHz to 2.2 MHz with high-speed termination; connect to ground if not used. |
| 7 | RT | input | Connect resistor RT from this pin to AGND to program switching frequency; leave floating for 500 kHz default switching frequency. |
| 8 | PGOOD | output | Open-drain output for power-good flag; use 10 kΩ to 100 kΩ pullup resistor to logic rail no higher than 12 V. |
| 9 | FB | input | Feedback sense input pin connected to midpoint of feedback divider to set VOUT; do not short this pin to ground during operation. |
| 10 | AGND | power_in | Analog ground pin providing ground reference for internal references and logic; connect to system ground. |
| 11 | SS/TRK | input | Soft-start control pin; leave floating for internal soft-start slew rate or connect capacitor to extend soft-start time or external voltage ramp for tracking. |
| 12 | EN | input | Enable input to LM43601 with high = ON and low = OFF; connect to VIN or through resistor divider or external voltage/logic source, do not float. |
| 13 | VIN | power_in | Supply input pin to internal LDO and high-side power FET operating range 3.5 V to 36 V; connect to power supply and bypass capacitors CIN with shortest path. |
| 14 | VIN | power_in | Supply input pin to internal LDO and high-side power FET operating range 3.5 V to 36 V; connect to power supply and bypass capacitors CIN with shortest path. |
| 15 | PGND | power_in | Power ground pin connected internally to low-side power FET; connect to system ground, PAD, AGND, and ground pins of CIN and COUT with shortest path to CIN. |
| 16 | PGND | power_in | Power ground pin connected internally to low-side power FET; connect to system ground, PAD, AGND, and ground pins of CIN and COUT with shortest path to CIN. |
| 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:
LM43601PWPR - Footprint:
Package_SO:TSSOP-16-1EP_4.4x5mm_P0.65mm - 3D model: HTSSOP-16-EP (KiCad packages3D, STEP)
- 3D model files:
lm43601pwpr-etched.step/lm43601pwpr-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);lm43601pwpr.step/lm43601pwpr.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (56 pp, sha256
84f11e12b19d28c7, 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).