component
LM2597N-5.0
Public Made by Adomby adom
Texas Instruments DC-DC Converters, PDIP-8. Pinout cross-checked by two models against the datasheet, 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
markdownLM2597N-5.0
Texas Instruments · DC-DC Converters · PDIP-8
LM2597N-5.0 from Texas Instruments, in a PDIP-8. 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 | Error Flag | output | Open-collector output that goes low (flag transistor ON) when the regulated output drops more than 5% below nominal, and stays low at start-up until VOUT reaches 95% of nominal plus the delay set by the Delay pin capacitor; it can be used as a microprocessor reset. |
| 2 | Delay | output | Sets a power-up time delay between VOUT reaching 95% of nominal and the Error Flag output going high, and must be left open if not used. |
| 3 | Bias Supply | input | Allows the internal circuitry to be powered from the regulated output or an external supply instead of VIN for higher efficiency at low output current or high input voltage, and must be left open if not used. |
| 4 | Feedback | input | Senses the regulated output voltage to close the feedback loop. |
| 5 | Shutdown/Soft-Start | input | Logic-level input that shuts the regulator down and reduces total input supply current to approximately 80 µA, while a capacitor on this pin gives a soft-start with controlled output ramp-up; the pin voltage is limited to 6 V maximum and must be left open if unused. |
| 6 | Ground | power_in | Circuit ground. |
| 7 | +VIN | input | Positive input supply for the switching regulator, which requires a suitable input bypass capacitor at this pin; the LM2597 supply range is 4.5 V to 40 V. |
| 8 | Output | output | Internal switch node that swings between (+VIN − VSAT) and approximately −0.5 V at a duty cycle of VOUT/VIN, so the PCB copper connected to it must be kept to a minimum. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | PDIP-8 |
| Category | Power Management (PMIC) |
| Pins | 8 |
CAD (KiCad official)
- Symbol:
LM2597N-5.0 - Footprint:
Package_DIP:DIP-8_W7.62mm - 3D model: PDIP-8 (KiCad packages3D, STEP)
- 3D model files:
lm2597n-5-0-etched.step/lm2597n-5-0-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);lm2597n-5-0.step/lm2597n-5-0.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (52 pp, sha256
4c810080b3229f59, retrieved 2026-10-08, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-5-5(text), consensusclaude-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).