Overview
The LM3480IM3-3.3, produced by Texas Instruments, is an integrated linear voltage regulator designed to provide a stable 3.3V output voltage. This device is part of the LM3480 series, which features quasi-low dropout characteristics, making it suitable for applications where traditional linear regulators may not be adequate due to their higher dropout voltages. The LM3480IM3-3.3 operates from an input voltage as high as 30V and ensures a maximum dropout of 1.2V at a full load of 100mA. It is packaged in a tiny 3-lead SOT-23 package, making it an ideal choice for space-constrained designs.
Key Specifications
| Parameter | Minimum | Typical | Maximum | Unit |
|---|---|---|---|---|
| Input Voltage (IN to GND) | -0.3 | 35 | V | |
| Maximum Input Voltage | 0 | 30 | V | |
| Junction Temperature | -40 | 125 | °C | |
| Output Voltage (VOUT) | 3.14 | 3.3 | 3.43 | V |
| Output Voltage Tolerance | ±5% | |||
| Maximum Dropout Voltage | 1.2 | V | ||
| Output Current (IOUT) | 1 mA | 100 mA | ||
| Power Dissipation | Internally Limited | |||
| Thermal Resistance (RθJA) | 269.6 | °C/W |
Key Features
- Quasi-low dropout voltage of 1.2V at full load of 100mA, making it suitable for applications where traditional LM78Lxx series devices are not viable due to their higher dropout voltages.
- Available in 3.3V, 5V, 12V, and 15V output voltage versions.
- Operates from an input voltage as high as 30V.
- Packaged in a tiny 3-lead SOT-23 package, ideal for space-constrained designs.
- Ensured minimum load current of 100mA.
- Output voltage tolerance of ±5% over full load and temperature ranges.
- Junction temperature range of -40°C to +125°C.
Applications
- Tiny alternative to industry standard LM78Lxx series and similar devices.
- Post regulator for switching DC/DC converters.
- Bias supply for analog circuits.
- Tiny 5V ±5% to 3.3V, 100mA converter.
Q & A
- What is the maximum input voltage for the LM3480IM3-3.3? The maximum input voltage is 30V.
- What is the output voltage tolerance of the LM3480IM3-3.3? The output voltage tolerance is ±5% over full load and temperature ranges.
- What is the maximum dropout voltage of the LM3480IM3-3.3? The maximum dropout voltage is 1.2V at a full load of 100mA.
- What is the junction temperature range for the LM3480IM3-3.3? The junction temperature range is -40°C to +125°C.
- What type of package does the LM3480IM3-3.3 come in? It is packaged in a 3-lead SOT-23 package.
- What is the minimum load current for the LM3480IM3-3.3? The ensured minimum load current is 100mA.
- What are some typical applications for the LM3480IM3-3.3? Typical applications include post regulators for switching DC/DC converters, bias supplies for analog circuits, and tiny voltage converters.
- What is the thermal resistance (RθJA) of the LM3480IM3-3.3? The thermal resistance (RθJA) is 269.6°C/W.
- What are the recommended external capacitors for the LM3480IM3-3.3? A minimum input and output capacitance of 0.1µF is recommended for stability and adequate transient performance.
- Is there a specific ESR limitation for the external capacitors? There is no specific ESR limitation, although excessively high ESR will compromise transient performance.
