Overview
The LD1117V50-DG, produced by STMicroelectronics, is a low dropout voltage regulator designed to provide a stable output voltage with high efficiency. This component is part of the LD1117 series, which includes both fixed and adjustable output voltage versions. The LD1117V50-DG specifically offers a fixed output voltage of 5.0 V. It is capable of delivering up to 800 mA of output current, making it suitable for a variety of applications requiring stable voltage regulation.
Key Specifications
| Parameter | Min. | Max. | Unit | |
|---|---|---|---|---|
| Output Voltage (VO) | 4.9 | 5.0 | 5.1 | V |
| Operating Input Voltage (Vin) | - | - | 15 | V |
| Output Current (IO) | - | 800 | 1300 | mA |
| Quiescent Current (Id) | 5 | 10 | - | mA |
| Dropout Voltage (Vd) | 1.0 | 1.1 | 1.2 | V |
| Line Regulation (∆VO) | 1 | - | 10 | mV |
| Load Regulation (∆VO) | 1 | - | 15 | mV |
| Temperature Stability (∆VO) | - | - | 0.5% | % |
| Supply Voltage Rejection (SVR) | 60 | 75 | - | dB |
| Thermal Resistance Junction-Ambient (RthJA) | - | - | 50 | °C/W |
Key Features
- Low dropout voltage (1 V typical)
- Output current up to 800 mA
- Fixed output voltage of 5.0 V
- Internal current and thermal limit
- High supply voltage rejection (75 dB typical)
- Tight output voltage tolerance (±1% at 25°C)
- Available in SOT-223, DPAK, SO-8, and TO-220 packages
- High efficiency due to NPN pass transistor
- Minimum 10 µF capacitor required for stability
Applications
The LD1117V50-DG is suitable for various applications requiring stable voltage regulation, including:
- Power supplies for electronic devices
- Voltage regulators in industrial control systems
- Automotive electronics
- Consumer electronics
- Telecommunication equipment
Q & A
- What is the maximum output current of the LD1117V50-DG?
The LD1117V50-DG can deliver up to 800 mA of output current.
- What is the typical dropout voltage of the LD1117V50-DG?
The typical dropout voltage is 1 V.
- What are the available package types for the LD1117V50-DG?
The component is available in SOT-223, DPAK, SO-8, and TO-220 packages.
- What is the operating input voltage range for the LD1117V50-DG?
The operating input voltage range is up to 15 V.
- What is the quiescent current of the LD1117V50-DG?
The quiescent current is typically 10 mA.
- What is the supply voltage rejection of the LD1117V50-DG?
The supply voltage rejection is typically 75 dB.
- What is the thermal resistance junction-ambient for the TO-220 package?
The thermal resistance junction-ambient for the TO-220 package is 50°C/W.
- What is the minimum capacitor required for stability?
A minimum 10 µF capacitor is required for stability.
- What are the typical output voltage tolerances for the LD1117V50-DG?
The output voltage tolerance is ±1% at 25°C.
- What are some common applications of the LD1117V50-DG?
Common applications include power supplies, industrial control systems, automotive electronics, consumer electronics, and telecommunication equipment.
