Overview
The REG104GA-5G4 is a 1A low-noise, low-dropout linear voltage regulator produced by Texas Instruments. This regulator is part of the REG104 family, known for its high accuracy and low ground pin current. It features a new DMOS topology that enhances performance with ultra-low dropout voltage and fast transient response. The REG104GA-5G4 is packaged in a SOT-223-6 surface mount package, making it suitable for a variety of applications requiring stable and efficient voltage regulation.
Key Specifications
| Parameter | Description |
|---|---|
| Part Number | REG104GA-5G4 |
| Manufacturer | Texas Instruments |
| Category | Power Management ICs > Voltage Regulators - Linear |
| Output Configuration | Positive |
| Output Type | Fixed |
| Number of Regulators | 1 |
| Voltage - Input (Max) | 15V |
| Voltage - Output (Fixed) | 5V |
| Voltage Dropout (Max) | 0.58V @ 1A |
| Current - Output | 1A |
| Current - Quiescent (Iq) | 0.7mA |
| Current - Supply (Max) | 1.8mA |
| PSRR | 65dB (120Hz) |
| Control Features | Enable |
| Protection Features | Over Current, Over Temperature |
| Operating Temperature | -40°C ~ 85°C |
| Mounting Type | Surface Mount |
| Package / Case | SOT-223-6 |
Key Features
- Low Dropout Voltage: The REG104GA-5G4 features a low dropout voltage of 230mV typical at 1A, ensuring efficient voltage regulation even at low input voltages.
- Low Noise: It has very low output noise, typically 33µVRMS for VOUT = 3.3V, making it suitable for noise-sensitive applications.
- High Accuracy: The regulator maintains high output voltage accuracy of ±2% over temperature, line, and load variations.
- No Output Capacitor Required: Unlike conventional low dropout regulators, the REG104GA-5G4 does not require an output capacitor for stability.
- Fast Transient Response: It offers fast transient response, ensuring quick recovery from changes in load or input voltage.
- Thermal and Overcurrent Protection: The regulator includes internal thermal protection and current limit features to protect the load from damage).
Applications
- Portable Communication Devices: Ideal for use in mobile phones, tablets, and other portable communication equipment due to its low noise and high efficiency).
- Battery-Powered Equipment: Suitable for devices powered by batteries, such as laptops, handheld devices, and battery-backed systems).
- Modems and Bar-Code Scanners: Used in various electronic devices that require stable and efficient voltage regulation).
- Backup Power Supplies: Can be used in backup power systems to ensure reliable voltage supply during power outages).
Q & A
- What is the output voltage of the REG104GA-5G4?
The output voltage of the REG104GA-5G4 is fixed at 5V.
- What is the maximum input voltage for the REG104GA-5G4?
The maximum input voltage for the REG104GA-5G4 is 15V.
- What is the dropout voltage of the REG104GA-5G4?
The dropout voltage of the REG104GA-5G4 is 0.58V at 1A.
- Does the REG104GA-5G4 require an output capacitor for stability?
No, the REG104GA-5G4 does not require an output capacitor for stability.
- What are the key protection features of the REG104GA-5G4?
The REG104GA-5G4 includes overcurrent and overtemperature protection features.
- What is the operating temperature range of the REG104GA-5G4?
The operating temperature range of the REG104GA-5G4 is -40°C to 85°C.
- What is the quiescent current of the REG104GA-5G4?
The quiescent current of the REG104GA-5G4 is 0.7mA.
- What package type is the REG104GA-5G4 available in?
The REG104GA-5G4 is available in a SOT-223-6 package.
- What are some typical applications of the REG104GA-5G4?
The REG104GA-5G4 is typically used in portable communication devices, battery-powered equipment, modems, bar-code scanners, and backup power supplies.
- Does the REG104GA-5G4 have a noise reduction feature?
Yes, the REG104GA-5G4 has very low output noise, typically 33µVRMS for VOUT = 3.3V, making it suitable for noise-sensitive applications.
