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LM2597MX-ADJ
Public Made by Adomby adom
Texas Instruments DC-DC Converters, SOIC-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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LM2597MX-ADJ
Texas Instruments · DC-DC Converters · SOIC-8
LM2597MX-ADJ from Texas Instruments, in a SOIC-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 when the regulated output drops more than 5% below nominal, and stays low until VOUT reaches 95% of nominal plus the Delay pin capacitor time, so it can reset a microprocessor at power-up. |
| 2 | Delay | output | Provides an adjustable power-up delay, set by an external capacitor, between VOUT reaching 95% of nominal and the Error Flag going high, and the pin voltage is limited to 1.5 V maximum. |
| 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, with bias supply voltage limited to -0.3 V to 30 V. |
| 4 | Feedback | input | Senses the regulated output voltage to close the feedback loop, with the pin voltage limited to -0.3 V to 25 V. |
| 5 | Shutdown/Soft-Start | input | Dual-function pin where logic-level signals shut the regulator down (total input current about 80 µA), and a capacitor on this pin gives controlled soft-start; the pin input voltage is limited to 6 V maximum. |
| 6 | Ground | power_in | Circuit ground. |
| 7 | +VIN | power_in | Positive input supply for the switching regulator, requiring a suitable bypass capacitor; for the LM2597 the recommended supply is 4.5 V to 40 V with a 45 V absolute maximum. |
| 8 | Output | output | Internal switch output that swings between (+VIN - VSAT) and about -0.5 V at a duty cycle of VOUT/VIN, so its PCB copper area must be kept minimal to limit coupling to sensitive circuitry. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SOIC-8 |
| Category | Power Management (PMIC) |
| Pins | 8 |
CAD (KiCad official)
- Symbol:
LM2597MX-ADJ - Footprint:
Package_SO:SOIC-8_3.9x4.9mm_P1.27mm - 3D model: SOIC-8 (KiCad packages3D, STEP)
- 3D model files:
lm2597mx-adj-etched.step/lm2597mx-adj-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);lm2597mx-adj.step/lm2597mx-adj.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).
# LM2597MX-ADJ
**Texas Instruments** · DC-DC Converters · SOIC-8
LM2597MX-ADJ from Texas Instruments, in a SOIC-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 when the regulated output drops more than 5% below nominal, and stays low until VOUT reaches 95% of nominal plus the Delay pin capacitor time, so it can reset a microprocessor at power-up. |
| 2 | Delay | output | Provides an adjustable power-up delay, set by an external capacitor, between VOUT reaching 95% of nominal and the Error Flag going high, and the pin voltage is limited to 1.5 V maximum. |
| 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, with bias supply voltage limited to -0.3 V to 30 V. |
| 4 | Feedback | input | Senses the regulated output voltage to close the feedback loop, with the pin voltage limited to -0.3 V to 25 V. |
| 5 | Shutdown/Soft-Start | input | Dual-function pin where logic-level signals shut the regulator down (total input current about 80 µA), and a capacitor on this pin gives controlled soft-start; the pin input voltage is limited to 6 V maximum. |
| 6 | Ground | power_in | Circuit ground. |
| 7 | +VIN | power_in | Positive input supply for the switching regulator, requiring a suitable bypass capacitor; for the LM2597 the recommended supply is 4.5 V to 40 V with a 45 V absolute maximum. |
| 8 | Output | output | Internal switch output that swings between (+VIN - VSAT) and about -0.5 V at a duty cycle of VOUT/VIN, so its PCB copper area must be kept minimal to limit coupling to sensitive circuitry. |
## Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SOIC-8 |
| Category | Power Management (PMIC) |
| Pins | 8 |
## CAD (KiCad official)
- Symbol: `LM2597MX-ADJ`
- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`
- 3D model: SOIC-8 (KiCad packages3D, STEP)
- 3D model files: `lm2597mx-adj-etched.step` / `lm2597mx-adj-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `lm2597mx-adj.step` / `lm2597mx-adj.glb` are the bare package body.
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [Texas Instruments datasheet](https://www.ti.com/cn/lit/gpn/lm2597hv) (52 pp, sha256 `4c810080b3229f59`, retrieved 2026-10-08, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-5-5` (text), consensus `claude-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).
[Datasheet PDF](docs/lm2597mx-adj-datasheet.pdf)