Overview
The MC78LC30HT1G is a part of the MC78LC00 series of fixed output low dropout linear regulators designed by onsemi. These regulators are specifically tailored for handheld communication equipment and portable battery-powered applications, where low quiescent current is crucial. The MC78LC30HT1G offers an ultra-low quiescent current of 1.1 µA, making it highly efficient for power-sensitive devices. It is housed in the micro-miniature Thin SOT23-5 surface mount package, ensuring compactness and ease of integration into various designs.
Key Specifications
| Characteristic | Symbol | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Output Voltage (TA = 25°C, Iout = 1.0 mA) | Vout | 2.94 | 3.0 | 3.06 | V |
| Maximum Operating Voltage | Vin | - | - | 12 | V |
| Quiescent Current (Iout = 1.0 mA to IO(nom.)) | IQ | - | 1.1 | 3.6 | µA |
| Output Voltage Temperature Coefficient | Tc | -100 | - | - | ppm/°C |
| Output Noise Voltage (f = 1.0 kHz to 100 kHz) | Vn | - | - | 89 | µVrms |
| Package Type | - | - | - | Thin SOT23-5 | - |
Key Features
- Low Quiescent Current: The MC78LC30HT1G features an ultra-low quiescent current of 1.1 µA, making it ideal for battery-powered applications.
- Excellent Line and Load Regulation: The regulator provides stable output voltage across a range of input voltages and output currents.
- High Accuracy Output Voltage: The output voltage has a high accuracy of ±2.5% over the operating temperature range.
- Low Dropout Voltage: The device operates with a low dropout voltage, ensuring efficient power regulation.
- Compact Package: Housed in the micro-miniature Thin SOT23-5 surface mount package, it is suitable for space-constrained designs.
- ESD Protection: The device includes ESD protection, exceeding Human Body Model 2000 V and Machine Model 200 V tests.
Applications
The MC78LC30HT1G is designed for use in handheld communication equipment and portable battery-powered applications. It is particularly suitable for devices that require low power consumption and high efficiency, such as:
- Handheld communication devices (e.g., smartphones, radios)
- Portable electronics (e.g., tablets, e-readers)
- Battery-powered sensors and IoT devices
- Low-power industrial control systems
Q & A
- What is the typical quiescent current of the MC78LC30HT1G?
The typical quiescent current is 1.1 µA.
- What is the maximum operating voltage for the MC78LC30HT1G?
The maximum operating voltage is 12 V.
- What is the output voltage accuracy of the MC78LC30HT1G?
The output voltage accuracy is ±2.5% over the operating temperature range.
- What type of package does the MC78LC30HT1G come in?
The device is housed in the micro-miniature Thin SOT23-5 surface mount package.
- Does the MC78LC30HT1G have ESD protection?
Yes, it includes ESD protection exceeding Human Body Model 2000 V and Machine Model 200 V tests.
- What is the recommended minimum output capacitor value for the MC78LC30HT1G?
The minimum output capacitor value is 0.1 µF.
- How should the input and output capacitors be connected for optimal performance?
The input and output capacitors should be connected close to the MC78LC30HT1G package, and the leads should be as short as possible.
- What are the thermal considerations for the MC78LC30HT1G?
The maximum power dissipation is dependent on the board design and layout. Proper thermal relief and good thermal conductivity through the PCB are essential to keep the junction temperature within safe limits.
- Can the MC78LC30HT1G be used in high-power dissipation applications?
Yes, but it requires careful consideration of the thermal design to ensure the junction temperature does not exceed 125°C.
- What are some common applications for the MC78LC30HT1G?
Common applications include handheld communication devices, portable electronics, battery-powered sensors, and low-power industrial control systems.
