Description
REGULATOR LD33CB (5PCS) — LD33CB (LD33) voltage regulator
Key Product Highlights & Features:
- Guaranteed Compatibility: Engineered to exact OEM specifications for OEM / Universal and compatible inverter equipment.
- Pre-Tested Reliability: Rigorously inspected by ACPCB for thermal resilience, voltage stability, and signal integrity.
- Durable PCB Construction: Manufactured with high-grade fiberglass FR-4 substrate and anti-corrosive coating for prolonged lifespan.
- Direct Drop-in Replacement: Standardized pinouts and mounting holes for rapid, hassle-free installation.
- Technical Support: Backed by dedicated ACPCB inverter AC troubleshooting guidance and verified pinout records.
Technical Specifications
| The LD33CB, LD33 is a low drop voltage regulator able to provide up to 1 A of output current, available also in adjustable versions (VREF = 1.25 V). In fixed versions, the following output voltages are offered | 1.2 V, 1.8 V, and 3.3 V. The device is supplied in: SOT-223, DPAK and TO-220. Surface mounted packages optimize the thermal characteristics while offering a relevant space saving advantage. High efficiency is assured by an NPN pass transistor. Only a very common 10 µF minimum capacitor is needed for stability. Chip trimming allows the regulator to reach a very tight output voltage tolerance, within ± 2% at 25 °C. |
|---|---|
| Features | |
| Low dropout voltage | – 1.15 V typ. @ IOUT = 1 A, 25 °C |
| Very low quiescent current | – 5 mA typ. @ 25 °C |
| Output current up to 1 A | Fixed output voltage of: – 1.2 V, 1.8 V, 3.3 V |
| Internal current and thermal limit | Only 10 µF for stability |
| High supply voltage rejection | – 80 dB typ. (at 25 °C) |
| Temperature range | 0 °C to 125 °C |
| Electrical characteristics | |
| ΔVO Temperature stability 0.5 % | VI Operating input voltage IO = 100 mA 10 V |
| Product Type | Voltage Regulator |
| Compatible Brand | OEM / Universal |
| Condition | 100% Brand New & Factory Tested |
| Quality Standard | OEM Industrial Standard / RoHS Compliant |
| Testing Certification | QC Passed – Voltage & Current Load Tested |
Professional Installation Guidelines:
1. Always disconnect the main power supply and discharge high-voltage DC filter capacitors before handling or replacing electronic boards.
2. Ensure uniform application of premium thermal conductive paste between heatsinks and power semiconductor modules (IPM/IGBT).
3. Verify wiring harness connections against terminal labels prior to powering on the system.
Package Contents:
• 1 x REGULATOR LD33CB (5PCS)
• Protective ESD anti-static bubble packaging & safety outer box from ACPCB.
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