component
LN1138B502MR-G
Public Made by Adomby adom
NATLINEAR Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-23-5L. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
Open in new tab ↗
Loads when you scroll to it. Unloads after 5 minutes in the background.
Symbol & Footprint
Schematic Symbol
Open full view ↗Loads when you scroll to it. Unloads after 5 minutes in the background.
PCB Footprint
Open full view ↗Loads when you scroll to it. Unloads after 5 minutes in the background.
Datasheet
Open in new tab ↗Loads when you scroll to it. Unloads after 5 minutes in the background.
README
markdownLN1138B502MR-G
NATLINEAR · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-23-5L
LN1138B502MR-G from NATLINEAR, in a SOT-23-5L. 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 | VIN | power_in | Input voltage pin, with the datasheet rating VIN from 2.0 V to 7 V in the electrical characteristics and an absolute maximum of VSS-0.3 V to VSS+8 V. |
| 2 | GND | power_in | Ground pin, which is the reference for VIN, VOUT and CE and must be tied to the system ground. |
| 3 | CE | input | Chip enable pin, where the MPN suffix B selects active-high enable without an internal pull-down, with VCEH minimum 1.6 V and VCEL maximum 0.25 V. |
| 4 | NC | unconnected | No internal connection; the pin is left floating (悬空) on the package. |
| 5 | VOUT | power_out | Regulated output pin, with a preset output voltage accurate to ±2.0% and output current up to 300 mA when VIN ≥ VOUT + 1 V. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | NATLINEAR |
| Package | SOT-23-5L |
| Category | Power Management (PMIC) |
| Pins | 5 |
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Output voltage accuracy (set value) | VOUT(E) | -2 | 2 | % | VIN=VOUT(S)+1.0 V, IOUT=30 mA; table gives VOUT(S)×0.98 to VOUT(S)×1.02, i.e. printed ±2.0% accuracy | 5 | |
| Output current | IOUT | 300 | mA | VIN≥VOUT(S)+1.0 V | 5 | ||
| Input voltage | VIN | 2 | 7 | V | 5 | ||
| Dropout voltage | Vdrop | 0.12 | 0.2 | V | IOUT=50 mA | 5 | |
| Dropout voltage | Vdrop | 0.3 | 0.45 | V | IOUT=100 mA | 5 | |
| Input stability | 0.1 | 0.2 | %/V | VOUT(S)+0.5 V ≤ VIN ≤ 7 V, IOUT=30 mA | 5 | ||
| Load stability | VOUT | 50 | 100 | mV | VIN=VOUT(S)+1.0 V, 1.0 mA ≤ IOUT ≤ 100 mA | 5 | |
| Output voltage temperature coefficient | -100 | 100 | ppm/℃ | VIN=VOUT(S)+1.0 V, IOUT=10 mA, -40°C ≤ Ta ≤ 85°C; printed ±100 | 5 | ||
| CE low level (max) | VCEL | 0.25 | V | 5 | |||
| CE high-level input current | ICEH | -0.1 | 0.1 | μA | VIN=VCE=VOUT(T)+1V | 5 | |
| CE low-level input current | ICEL | -0.1 | 0.1 | μA | VIN=VOUT(T)+1V, VCE=VSS | 5 | |
| Input voltage (absolute maximum) | VIN | -0.3 | 8 | V | Referenced to VSS (printed VSS-0.3 to VSS+8) | 4 | |
| CE input voltage (absolute maximum) | VCE | -0.3 | V | Referenced to VSS; upper limit printed as VIN+0.3 | 4 | ||
| Output voltage (absolute maximum) | VOUT | -0.3 | V | Referenced to VSS; upper limit printed as VIN+0.3 | 4 | ||
| Power dissipation | PD | 250 | mW | SOT23-3L/5L, SOT-353 package | 4 | ||
| Operating temperature | Topr | -40 | 85 | °C | 4 | ||
| Storage temperature | Tstg | -40 | 125 | °C | 4 | ||
| Input capacitor | CIN | 1 | µF | Typical application circuit note | 1 | ||
| Output capacitor | COUT | 1 | µF | Typical application circuit note | 1 | ||
| Operating current | ISS1 | 60 | μA | VIN=VOUT(S)+1.0 V | 5 | ||
| Ripple rejection | /PSRR/ | 60 | dB | VIN=VOUT(S)+1.0 V, f=1 kHz, Vrip=0.5 Vrms, IOUT=50 mA | 5 | ||
| Short-circuit current | Ishort | 40 | mA | VIN=VOUT(S)+1.0 V, VCE on, VOUT=0 V | 5 | ||
| CE minimum high level | VCEH | 1.6 | V | 5 |
CAD (KiCad official)
- Symbol:
LN1138B502MR-G - Footprint:
Package_TO_SOT_SMD:SOT-23-5 - 3D model: SOT-23-5L (KiCad packages3D, STEP)
- 3D model files:
ln1138b502mr-g-etched.step/ln1138b502mr-g-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);ln1138b502mr-g.step/ln1138b502mr-g.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: NATLINEAR datasheet (11 pp, sha256
4514d3b558ecd84e, retrieved 2026-10-17, 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 0.3, 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).