Overview
The LP38690SDX-5.0/NOPB is a low-dropout CMOS linear voltage regulator produced by Texas Instruments. This regulator is designed to provide a stable 5V output with a high current capability of up to 1A. It features a wide input voltage range from 2.7V to 10V, making it versatile for various applications. The LP38690 series is known for its tight output tolerance, extremely low dropout voltage, and excellent AC performance, especially when used with ultra-low ESR ceramic output capacitors.
Key Specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Part Number | LP38690SDX-5.0/NOPB |
| Package | 6-WSON (NGG) or 6-WDFN Exposed Pad |
| Pins | 6 |
| Operating Temperature Range (°C) | -40 to 125 |
| Input Voltage Range (V) | 2.7 to 10 |
| Output Voltage (V) | 5V (Fixed) |
| Output Current (A) | 1A |
| Voltage Dropout (V) | 0.45V @ 1A (typical) |
| Quiescent Current (µA) | 1µA (off-state), 55µA (typical) at full load |
| PSRR (dB) | 55dB (120Hz) |
| Protection Features | Thermal Overload Protection, Foldback Current Limiting |
Key Features
- Wide Input Voltage Range (2.7 V to 10 V)
- 2.5% Output Accuracy (25°C)
- Low Dropout Voltage: 450 mV at 1 A (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 and Foldback Current Limiting
- Available in 3-Lead TO-252, 5-Lead SOT-223, and 6-Bump WSON Packages
- Enable Pin (for LP38692 model)
- Ground Pin Current: 55 µA (typical) at Full Load
Applications
The LP38690SDX-5.0/NOPB is suitable for a variety of applications requiring stable and efficient voltage regulation. These include:
- Power supplies for embedded systems and microcontrollers
- Battery-powered devices where low dropout voltage is crucial
- Automotive systems requiring operation over a wide temperature range
- Industrial control systems and automation
- Consumer electronics needing reliable and efficient power management
Q & A
- What is the output voltage of the LP38690SDX-5.0/NOPB?
The output voltage is fixed at 5V. - What is the maximum output current of the LP38690SDX-5.0/NOPB?
The maximum output current is 1A. - What is the input voltage range for the LP38690SDX-5.0/NOPB?
The input voltage range is from 2.7V to 10V. - What is the typical dropout voltage at 1A load current?
The typical dropout voltage at 1A load current is 450 mV. - Does the LP38690SDX-5.0/NOPB have thermal protection?
Yes, it has thermal overload protection and foldback current limiting. - What are the available package options for the LP38690 series?
The LP38690 series is available in 3-Lead TO-252, 5-Lead SOT-223, and 6-Bump WSON packages. - What is the operating temperature range of the LP38690SDX-5.0/NOPB?
The operating temperature range is from -40°C to 125°C. - What is the quiescent current of the LP38690SDX-5.0/NOPB?
The off-state quiescent current is 1µA, and the typical ground pin current at full load is 55µA. - Is the LP38690SDX-5.0/NOPB RoHS compliant?
Yes, the LP38690SDX-5.0/NOPB is RoHS compliant. - What type of output capacitors are recommended for the LP38690SDX-5.0/NOPB?
Ultra-low ESR ceramic output capacitors are recommended for excellent AC performance.
