Overview
The LP38693SD-5.0/NOPB is a 500-mA, 10-V, low-dropout voltage regulator produced by Texas Instruments. This device is part of the LP3869x series, designed to provide tight output tolerance and excellent AC performance. It features a PMOS power transistor, which eliminates the need for DC base-drive current, resulting in low ground pin current regardless of load current, input voltage, or operating temperature. The regulator is available in a WSON (NGG) package with 6 pins, making it suitable for applications requiring minimal board space.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Input Voltage Range | 2.7 to 10 | V |
| Output Voltage | 5 | V |
| Output Current | 500 | mA |
| Dropout Voltage | 250 mV (typical at 500 mA, VOUT = 5 V) | mV |
| Output Accuracy | 2% (typical at 25°C) | % |
| Operating Temperature Range | -40 to 125 | °C |
| Package Type | WSON (NGG) with 6 pins | |
| Off-State Quiescent Current | 1 µA | µA |
| Ground Pin Current | 55 µA (typical at full load) | µA |
| Thermal Overload Protection | Yes | |
| Foldback Current Limiting | Yes | |
| Enable Pin | Yes (LP38693 only) |
Key Features
- Wide Input Voltage Range (2.7 V to 10 V)
- 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 and Foldback Current Limiting
- Ground Pin Current: 55 µA (typical) at full load
- Enable Pin (LP38693 only)
- Low thermal resistance of the WSON package, allowing full operating current even in high ambient temperature environments
Applications
- Hard Disk Drives
- Notebook Computers
- Battery-Powered Devices
- Portable Instrumentation
The LP38693SD-5.0/NOPB is specifically designed for portable applications requiring minimal board space and small components, making it ideal for a variety of digital systems.
Q & A
- What is the input voltage range of the LP38693SD-5.0/NOPB?
The input voltage range is from 2.7 V to 10 V.
- What is the typical dropout voltage of the LP38693SD-5.0/NOPB at 500 mA load current?
The typical dropout voltage is 250 mV at 500 mA load current when VOUT = 5 V.
- What is the output accuracy of the LP38693SD-5.0/NOPB at 25°C?
The output accuracy is 2% typical at 25°C.
- What is the operating temperature range of the LP38693SD-5.0/NOPB?
The operating temperature range is from -40°C to 125°C.
- What type of package does the LP38693SD-5.0/NOPB come in?
The device comes in a WSON (NGG) package with 6 pins.
- Does the LP38693SD-5.0/NOPB have an enable pin?
Yes, the LP38693SD-5.0/NOPB has an enable pin.
- What is the off-state quiescent current of the LP38693SD-5.0/NOPB?
The off-state quiescent current is 1 µA.
- Does the LP38693SD-5.0/NOPB have thermal overload protection and foldback current limiting?
Yes, it has both thermal overload protection and foldback current limiting.
- What are some typical applications for the LP38693SD-5.0/NOPB?
Typical applications include hard disk drives, notebook computers, battery-powered devices, and portable instrumentation.
- What is the recommended input capacitor for stability?
Texas Instruments recommends a 1-µF capacitor connected between the IN pin and GND pin for stability.
