Overview
The LT1763CS8-5 is a micropower, low noise, low dropout linear regulator from Linear Technology (now part of Analog Devices). This device is designed to supply up to 500mA of output current with a dropout voltage as low as 300mV, making it ideal for battery-powered systems. The regulator features a low quiescent current of 30µA, which remains well-controlled even in dropout conditions, and it is stable with output capacitors as low as 3.3µF.
Key Specifications
| Parameter | Conditions | Min | Typ | Max | Units |
|---|---|---|---|---|---|
| Minimum Operating Voltage | ILOAD = 500mA | 1.8 | - | 2.35 | V |
| Regulated Output Voltage | VIN = 2.3V, ILOAD = 1mA 2.8V < VIN < 20V, 1mA < ILOAD < 500mA | 4.975 | 5.0 | 5.025 | V |
| Dropout Voltage | ILOAD = 100mA | 0.20 | 0.24 | 0.34 | V |
| Dropout Voltage | ILOAD = 500mA | 0.30 | 0.35 | 0.45 | V |
| Quiescent Current | VIN = VOUT(NOMINAL), ILOAD = 0mA | - | 30 | - | µA |
| Output Noise | 10Hz to 100kHz bandwidth with 0.01µF bypass capacitor | - | 20 | - | µVRMS |
Key Features
- Low Dropout Voltage: As low as 300mV at 500mA output current.
- Low Quiescent Current: 30µA, making it suitable for battery-powered systems.
- Low Output Noise: 20µVRMS over a 10Hz to 100kHz bandwidth with an external 0.01µF bypass capacitor.
- Stability with Low Output Capacitance: Stable with output capacitors as low as 3.3µF.
- Wide Operating Temperature Range: Specifications apply over the full operating temperature range.
Applications
- Battery-Powered Systems: Ideal for use in portable electronics and other battery-powered devices due to its low quiescent current and low dropout voltage.
- Low Noise Systems: Suitable for applications requiring low noise, such as audio equipment and precision measurement instruments.
- Embedded Systems: Can be used in various embedded systems where power efficiency and low noise are critical.
Q & A
- What is the maximum output current of the LT1763CS8-5?
The LT1763CS8-5 can supply up to 500mA of output current.
- What is the typical dropout voltage of the LT1763CS8-5?
The typical dropout voltage is 0.35V at 500mA output current.
- What is the quiescent current of the LT1763CS8-5?
The quiescent current is typically 30µA.
- How can I reduce the output noise of the LT1763CS8-5?
Adding an external 0.01µF bypass capacitor can reduce the output noise to 20µVRMS over a 10Hz to 100kHz bandwidth.
- What is the minimum output capacitance required for stability?
The regulator is stable with output capacitors as low as 3.3µF.
- What are the typical operating temperature ranges for the LT1763CS8-5?
The specifications apply over the full operating temperature range, but specific details can be found in the datasheet.
- Is the LT1763CS8-5 suitable for battery-powered systems?
Yes, it is ideal for battery-powered systems due to its low quiescent current and low dropout voltage.
- What package type is the LT1763CS8-5 available in?
The LT1763CS8-5 is available in an 8-SOIC package.
- Where can I find more detailed specifications for the LT1763CS8-5?
You can find detailed specifications in the datasheet available on the Analog Devices website.
- What are some common applications for the LT1763CS8-5?
Common applications include battery-powered systems, low noise systems, and various embedded systems where power efficiency and low noise are critical.
