Overview
The LP38691DTX-3.3/NOPB is a low-dropout CMOS linear voltage regulator produced by Texas Instruments. This regulator is designed to provide a stable 3.3V output with a maximum current of 500 mA. It features a wide input voltage range from 2.7 V to 10 V, making it versatile for various applications. The LP38691DTX-3.3/NOPB is available in a TO-252 (NDP) package with 3 pins, which offers low thermal resistance, allowing full operating current even in high ambient temperature environments.
Key Specifications
| Parameter | Value |
|---|---|
| Input Voltage Range | 2.7 V to 10 V |
| Output Voltage | 3.3 V |
| Maximum Output Current | 500 mA |
| Output Accuracy (25°C) | 2% typical |
| Dropout Voltage (Typical, 5 V Out) | 250 mV at 500 mA |
| Package Type | TO-252 (NDP) |
| Number of Pins | 3 |
| Operating Temperature Range | -40°C to 125°C |
| Ground Pin Current (Typical, Full Load) | 55 µA |
| Off-State Quiescent Current | 1 µA |
Key Features
- Wide Input Voltage Range (2.7 V to 10 V)
- 2% Output Accuracy (25°C)
- Low Dropout Voltage: 250 mV at 500 mA (Typical, 5 V Out)
- Precision (Trimmed) Bandgap Reference
- Ensured Specifications for –40°C to 125°C
- 1-µA Off-State Quiescent Current
- Thermal Overload Protection
- Foldback Current Limiting
- Ground Pin Current: 55 µA (typical) at full load
- Enable Pin (available in LP38693 model)
Applications
The LP38691DTX-3.3/NOPB is suitable for a variety of applications requiring stable and efficient voltage regulation. These include automotive systems, industrial control systems, medical devices, and consumer electronics where low dropout voltage and high accuracy are crucial. The regulator's ability to operate over a wide temperature range and its low thermal resistance make it particularly useful in high ambient temperature environments.
Q & A
- What is the input voltage range of the LP38691DTX-3.3/NOPB?
The input voltage range is from 2.7 V to 10 V. - What is the maximum output current of the LP38691DTX-3.3/NOPB?
The maximum output current is 500 mA. - What is the typical dropout voltage at 500 mA load current for the LP38691DTX-3.3/NOPB?
The typical dropout voltage is 250 mV at 500 mA load current. - What is the operating temperature range of the LP38691DTX-3.3/NOPB?
The operating temperature range is from -40°C to 125°C. - Does the LP38691DTX-3.3/NOPB have thermal overload protection?
Yes, it has thermal overload protection. - What is the ground pin current at full load for the LP38691DTX-3.3/NOPB?
The ground pin current is typically 55 µA at full load. - Is the LP38691DTX-3.3/NOPB available in AEC-Q100 Grade 1?
Yes, all WSON options are available as AEC-Q100 Grade 1. - What type of package does the LP38691DTX-3.3/NOPB come in?
The LP38691DTX-3.3/NOPB comes in a TO-252 (NDP) package with 3 pins. - Does the LP38691DTX-3.3/NOPB have an enable pin?
No, the enable pin is available in the LP38693 model, not the LP38691DTX-3.3/NOPB. - What is the off-state quiescent current of the LP38691DTX-3.3/NOPB?
The off-state quiescent current is 1 µA.
