component
L7824 24 V Linear Regulator
Public Unreviewedby Ray
Fixed 24 V positive-voltage linear regulator, up to 1.5 A, in the L78xx (7800) series.
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markdownL7824
STMicroelectronics · Linear Regulator (LDO) · TO-220
The L7824 is a three-terminal fixed positive-voltage regulator from ST's L78xx (7800) series, delivering a stable 24 V output at up to 1.5 A with adequate heat sinking, needing only input and output capacitors.
Pinout
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | INPUT | power_in | Unregulated DC input voltage. Absolute maximum V_I = 35 V (for V_O = 5 to 18 V variants) or 40 V (for 20/24 V variants). A 0.33 uF ceramic input capacitor is recommended close to the pin for stability. |
| 2 | GROUND | power_in | Common ground reference. Also serves as the thermal path via the mounting tab on TO-220/TO-220FP/DPAK/D2PAK packages (tab is electrically connected to GROUND). |
| 3 | OUTPUT | power_out | Regulated +24 V DC output, up to 1.5 A with adequate heatsinking. Requires a 0.1 uF output capacitor for transient response; internally current-limited and thermally protected. |
Key specifications
| Parameter | Value |
|---|---|
| Type | Fixed positive linear regulator |
| Output voltage | 24 V |
| Output current | Up to 1.5 A (with heatsink) |
| Dropout voltage | 2 V typ |
| Package | TO-220 (3-lead) |
| Operating temperature | 0 C to 125 C (junction) |
CAD (KiCad official)
- Symbol:
l7824.kicad_sym - Footprint:
l7824.kicad_mod - 3D model: TO-220 body from KiCad
Package_TO_SOT_THT/TO-220-3_Vertical.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: STMicroelectronics datasheet (55 pp, sha256
ccba643d1b7ced87, 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).