The LN20545Q1-EFR is an automotive-grade LDO linear voltage regulator from LEN Technology. It provides a fixed 5V output (or adjustable) with a maximum current of 450mA, supporting a wide input voltage range from 4.5V to 42V. It is AEC-Q100 Grade 1 qualified, featuring ultra-low quiescent current (<5.5µA), a Power Good output, and thermal shutdown, housed in a thermally enhanced SOIC-EP8 package.
No direct cross-reference alternatives are currently listed in the database or provided via external search context. Engineers may look for other AEC-Q100 qualified 5V LDOs with similar input voltage ratings (up to 40V+) and low quiescent current specifications for potential substitution.
LN20545Q1-EFR
| Manufacturer | LEN Technology |
| Part Number | LN20545Q1-EFR |
| Product Type | LDO Voltage Regulators |
| RoHS | No |
| Package / Case | SOIC-EP8 (Thermally Enhanced) |
| Stock | 0 |
| Package | SOIC-EP8 (Thermally Enhanced Exposed Pad) |
| PSRR (dB) | 70 @ 100Hz |
| Pitch (mm) | 1.27 |
| Protection | Over-current, thermal shutdown with auto-restart, internal soft-start |
| Suffix EFR | SOIC-EP8 package, Tape & Reel, halogen-free/RoHS |
| Device Type | Low Dropout (LDO) Linear Voltage Regulator |
| Applications | Automotive BMS, BCM, VCU, ADAS sensor power, battery-connected systems, IGBT driver power, infotainment |
| Body Size (mm) | 4.9 × 3.9 |
| Output Voltage | 5V (fixed) or adjustable |
| Power Good Output | Yes (with programmable delay for MCU reset) |
| Shutdown Current (µA) | < 1 |
| Input Voltage Range (V) | 4.5 ~ 42 |
| Output Current max (mA) | 450 |
| Automotive Qualification | AEC-Q100 Grade 1 (-40°C to 150°C junction) |
| Quiescent Current Iq (µA) | < 5.5 (ultra-low) |
| Operating Temperature (°C) | -40 to +125 (ambient) |
Always verify package, pinout, electrical limits, and datasheets before approving a substitute.
LN20545Q1-EFR by LEN Technology — LDO Voltage Regulators; SOIC-EP8 (Thermally Enhanced) package.
- Manufacturer
- LEN Technology
- Product Type
- LDO Voltage Regulators
- Package
- SOIC-EP8 (Thermally Enhanced)