component
LM43603PWPR
Public Made by Adomby adom
Texas Instruments DC-DC Converters, TSSOP-16-EP. Datasheet-verified pinout, KiCad symbol/footprint/3D.
3D Model
Open in new tab ↗
Loads on click. Unloads only if this page sits in the background.
Symbol & Footprint
Schematic Symbol
Open full view ↗Loads on click. Unloads only if this page sits in the background.
PCB Footprint
Open full view ↗Loads on click. Unloads only if this page sits in the background.
Datasheet
Open in new tab ↗Loads on click. Unloads only if this page sits in the background.
README
markdownLM43603PWPR
Texas Instruments · DC-DC Converters · TSSOP-16-EP
LM43603PWPR from Texas Instruments, in a TSSOP-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 | output | Bootstrap capacitor connection for high-side driver; connect 470-nF capacitor from CBOOT to SW. |
| 4 | VCC | power_out | Internal bias supply output for bypassing, 3.28V typical; connect bypass capacitor from this pin to AGND; do not connect external loading or short to ground during operation. |
| 5 | BIAS | power_in | Optional internal LDO supply input (3.3V to 28V); tie to VOUT when 3.3V ≤ VOUT ≤ 28V or to external 3.3V/5V rail; place 1-10µF bypass capacitor when used, tie to ground when not in use; do not float. |
| 6 | SYNC | input | Clock input to synchronize switching action to external clock from 200kHz to 2.2MHz; use proper high-speed termination; connect to ground if not used; do not float. |
| 7 | RT | input | Frequency programming input; connect resistor from this pin to AGND to program switching frequency (200kHz to 2.2MHz) or leave floating for 500kHz default. |
| 8 | PGOOD | tri_state | Open-drain power-good flag output; use 10kΩ to 100kΩ pullup resistor to logic rail no higher than 12V; provides 220µs deglitch delay. |
| 9 | FB | input | Feedback sense input pin; connect to midpoint of feedback divider to set VOUT; reference voltage 1.011V typical; do not short this pin 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; leave floating for 4.1ms internal soft-start or connect capacitor to extend soft-start time; can connect external voltage ramp for output voltage tracking. |
| 12 | EN | input | Enable input to internal LDO and regulator; high enables operation and low disables; connect to VIN, resistor divider, or external voltage/logic source; do not float; 2.1V typical enable threshold. |
| 13 | VIN | power_in | Supply input pins to internal LDO and high-side power FET, 3.5V to 36V range; connect to power supply and bypass capacitors CIN; maintain short path to high-frequency bypass capacitor and PGND. |
| 14 | VIN | power_in | Supply input pins to internal LDO and high-side power FET, 3.5V to 36V range; connect to power supply and bypass capacitors CIN; maintain short path to high-frequency bypass capacitor and PGND. |
| 15 | PGND | power_in | Power ground pins connected internally to low-side power FET; connect to system ground, PAD, AGND, and ground pins of input/output capacitors; maintain short path to CIN. |
| 16 | PGND | power_in | Power ground pins connected internally to low-side power FET; connect to system ground, PAD, AGND, and ground pins of input/output capacitors; maintain short 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 | TSSOP-16-EP |
| Category | Power Management (PMIC) |
| Pins | 17 |
CAD (KiCad official)
- Symbol:
LM43603PWPR - Footprint:
Package_SO:TSSOP-16-1EP_4.4x5mm_P0.65mm - 3D model: TSSOP-16-EP (KiCad packages3D, STEP)
- 3D model files:
lm43603pwpr-etched.step/lm43603pwpr-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);lm43603pwpr.step/lm43603pwpr.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (59 pp, sha256
2642edca40e62388, 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).