Overview
The MC33275ST-5.0T3G is a micropower low dropout voltage regulator produced by onsemi. This device is part of the MC33275 series, which is available in various output voltages and package types, including SOT-223, SOP-8, DPAK, and DFN 4x4 surface mount packages. The MC33275ST-5.0T3G specifically provides a fixed output voltage of 5.0 volts. It is designed to offer low quiescent current and can supply output currents up to 300 mA, making it suitable for battery-powered computer, consumer, and industrial equipment where extending battery life is crucial.
Key Specifications
| Characteristic | Symbol | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Output Voltage (IO = 0 mA to 250 mA) | VO | 4.900 | 5.00 | 5.100 | Vdc |
| Input Voltage | VCC | - | - | 13 | Vdc |
| Maximum Output Current | IO | - | - | 300 | mA |
| Dropout Voltage (IO = 10 mA) | Vin - VO | - | - | 25 | mV |
| Dropout Voltage (IO = 300 mA) | Vin - VO | - | - | 260 | mV |
| Line Regulation (Vin = [VO + 1] V to 12 V, IO = 250 mA) | Regline | - | - | 10 | mV |
| Load Regulation (Vin = [VO + 1] V, IO = 0 mA to 250 mA) | Regload | - | - | 25 | mV |
| Operating Ambient Temperature Range | TA | -40 | - | 125 | °C |
| Maximum Junction Temperature | TJ | - | - | 150 | °C |
| Quiescent Current (ON Mode, Vin = [VO + 1] V, IO = 0 mA) | IQOn | 125 | 200 | - | µA |
| Thermal Shutdown Temperature | - | - | - | 150 | °C |
Key Features
- Low input-to-output voltage differential of 25 mV at IO = 10 mA and 260 mV at IO = 300 mA.
- Extremely tight line and load regulation.
- Stable with output capacitance of only 0.22 µF for 5.0 V output voltage.
- Internal current limiting and thermal shutdown protection.
- Low quiescent current, making it suitable for battery-powered devices.
- Able to supply output currents up to 300 mA.
- Available in SOT-223 package.
Applications
The MC33275ST-5.0T3G is ideally suited for use in battery-powered computer, consumer, and industrial equipment where extending the useful battery life is desirable. It is also applicable in various other scenarios requiring low dropout voltage regulation, such as:
- Battery-powered devices.
- Consumer electronics.
- Industrial control systems.
- Portable electronics.
Q & A
- What is the maximum output current of the MC33275ST-5.0T3G? The maximum output current is 300 mA.
- What is the typical dropout voltage at 10 mA output current? The typical dropout voltage at 10 mA output current is 25 mV.
- What is the operating ambient temperature range for this device? The operating ambient temperature range is from -40°C to +125°C.
- Does the MC33275ST-5.0T3G have internal protection features? Yes, it has internal current limiting and thermal shutdown protection.
- What type of package is the MC33275ST-5.0T3G available in? It is available in the SOT-223 package.
- What is the recommended output capacitor value for stability? For 5.0 V output voltage, a 0.22 µF capacitor is recommended for stability.
- What is the quiescent current of the MC33275ST-5.0T3G in ON mode? The quiescent current in ON mode is typically 200 µA.
- What is the thermal shutdown temperature of the device? The thermal shutdown temperature is 150°C.
- Is an input bypass capacitor recommended? Yes, an input bypass capacitor is recommended to improve transient response, especially if the regulator is connected to the supply input filter with long wire lengths.
- What is the line regulation of the MC33275ST-5.0T3G? The line regulation is typically 10 mV from Vin = [VO + 1] V to 12 V at IO = 250 mA.
