Overview
The MC33275DT-3.3RK 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 DPAK, SOT-223, SOP-8, and DFN 4x4 surface mount packages. The MC33275DT-3.3RK specifically provides a fixed output voltage of 3.3V and is designed to supply output currents up to 300 mA. It features a very low quiescent current, making it ideal for battery-powered computer, consumer, and industrial equipment where extending battery life is crucial.
Key Specifications
| Characteristic | Symbol | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Output Voltage | VO | 3.234 | 3.30 | 3.366 | Vdc |
| Input Voltage | VCC | - | - | 13 | Vdc |
| Output Current | IO | - | - | 300 | mA |
| Dropout Voltage at IO = 10 mA | Vin - VO | - | - | 25 | mV |
| Dropout Voltage at IO = 300 mA | Vin - VO | - | - | 260 | mV |
| Line Regulation | Regline | - | - | 10 | mV |
| Load Regulation | Regload | - | - | 25 | mV |
| Quiescent Current (ON Mode) | IQOn | 125 | - | 200 | μA |
| Operating Ambient Temperature Range | TA | -40 | - | 125 | °C |
| Storage Temperature Range | Tstg | -65 | - | 150 | °C |
| Thermal Shutdown | - | - | - | 150 | °C |
Key Features
- Low input-to-output voltage differential of 25 mV at IO = 10 mA and 260 mV at IO = 300 mA.
- Very low quiescent current of 125 μA.
- Internal current and thermal limiting protection.
- Stable with output capacitance as low as 0.33 μF for 3.3 V output voltage.
- Extremely tight line and load regulation.
- Available in DPAK, SOT-223, SOP-8, and DFN 4x4 surface mount packages.
Applications
The MC33275DT-3.3RK is ideally suited for battery-powered computer, consumer, and industrial equipment where extending the useful battery life is desirable. It is particularly useful in applications requiring low power consumption and high efficiency, such as portable electronics, embedded systems, and power supply modules.
Q & A
- What is the maximum output current of the MC33275DT-3.3RK?
The maximum output current is 300 mA. - What is the typical dropout voltage at 300 mA output current?
The typical dropout voltage at 300 mA output current is 260 mV. - What is the quiescent current of the MC33275DT-3.3RK?
The quiescent current is typically 125 μA. - What are the operating and storage temperature ranges for the MC33275DT-3.3RK?
The operating ambient temperature range is -40°C to +125°C, and the storage temperature range is -65°C to +150°C. - Does the MC33275DT-3.3RK have built-in protection features?
Yes, it includes internal current limiting and thermal shutdown protection. - What is the recommended output capacitance for stability?
The recommended output capacitance is at least 0.33 μF for 3.3 V output voltage. - In what packages is the MC33275DT-3.3RK available?
The MC33275 series is available in DPAK, SOT-223, SOP-8, and DFN 4x4 surface mount packages. - What is the maximum input voltage for the MC33275DT-3.3RK?
The maximum input voltage is 13 Vdc. - How does the MC33275DT-3.3RK help in extending battery life?
It helps by featuring a very low quiescent current and low input-to-output voltage differential, which reduces power consumption and extends battery life. - What are some typical applications for the MC33275DT-3.3RK?
Typical applications include battery-powered computer, consumer, and industrial equipment, as well as portable electronics and embedded systems.
