component
LM5001MAX
Public Unreviewedby Ray
Texas Instruments DC-DC Converters, SOIC-8. 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
markdownLM5001MAX
Texas Instruments · DC-DC Converters · SOIC-8
LM5001MAX from Texas Instruments, in a SOIC-8. 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 | Switch pin. Drain terminal of the internal 75-V N-channel power MOSFET (1-A peak). Connects to the switching inductor or transformer primary. Absolute max -0.3 V to 76 V vs GND. |
| 2 | VIN | power_in | Input supply pin. Nominal operating range 3.1 V to 75 V; absolute max 76 V. Powers the internal high-voltage bias regulator that generates VCC. |
| 3 | VCC | power_out | Bias regulator output, or input for external bias supply. VCC tracks VIN up to 6.9 V and is regulated to 6.85 V (typ). Requires a >=0.47 uF ceramic decoupling capacitor. May be back-driven with 7-12 V to disable the internal regulator and improve efficiency. |
| 4 | GND | power_in | Ground return. Internal reference for the regulator control functions and the power MOSFET current-sense resistor connection. |
| 5 | RT | input | Oscillator frequency programming and optional synchronization pulse input. A resistor between RT and GND sets the internal oscillator (recommended 50 kHz to 1.5 MHz; e.g. 48.7 kOhm yields ~260 kHz). Also accepts external sync pulses (V_RT-SYNC ~2.6 V, >=15 ns wide) through a recommended 100-pF ac-coupling capacitor. |
| 6 | FB | input | Feedback input from the regulated output voltage. Connects to the inverting input of the internal error amplifier; the internal 1.26-V reference is tied to the non-inverting input. Absolute max -0.3 V to 7 V. |
| 7 | COMP | output | Open-drain output of the internal error amplifier. Connect the loop compensation network between COMP and FB. An internal 5-kOhm pull-up to VCC can bias an opto-coupler transistor (while FB is grounded) for isolated-ground applications. Absolute max -0.3 V to 7 V. |
| 8 | EN | input | Enable / Undervoltage Lock-Out / Shutdown input. External resistor divider sets the line undervoltage lockout threshold (standby threshold ~1.26 V). If left unconnected, a 6-uA internal pull-up current source enables the regulator. Absolute max 14 V. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SOIC-8 |
| Category | PMIC |
| Pins | 8 |
Ordering variants
Same part, different packaging or reel option.
LM5001MAXLM5001MAXSDLM5001MAXSDX
CAD (KiCad official)
- Symbol:
LM5001MAX - Footprint:
Package_SO:SOIC-8_3.9x4.9mm_P1.27mm - 3D model: SOIC-8 (KiCad packages3D, STEP)
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (26 pp, sha256
19a81922945e7b72, retrieved 2026-08-17, tier: manufacturer) - Extractor:
ds2sf(Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate. - CAD: KiCad official libraries (CC-BY-SA 4.0).