Overview
The LT1963AEQ-1.8#PBF is a low dropout (LDO) regulator from Analog Devices Inc., part of the LT1963A series. This device is optimized for fast transient response and is designed to provide a stable output voltage with minimal noise. The LT1963AEQ-1.8#PBF is available in a 5-lead Plastic DD-Pak package and operates over a temperature range of –40°C to 125°C, making it suitable for a wide range of applications, including automotive systems.
Key Specifications
| Parameter | Conditions | Min | Typ | Max | Units |
|---|---|---|---|---|---|
| Output Current | 1.5 | A | |||
| Dropout Voltage | ILOAD = 1.5A | 0.34 | 0.45 | 0.55 | V |
| Regulated Output Voltage | VIN = 2.3V, ILOAD = 1mA 2.8V < VIN < 20V, 1mA < ILOAD < 1.5A | 1.773 | 1.800 | 1.827 | V |
| Quiescent Current | 1 | mA | |||
| Noise | 10Hz to 100kHz | 40 | µVRMS | ||
| Minimum Input Voltage | ILOAD = 1.5A | 1.9 | 2.1 | 2.5 | V |
| Operating Temperature Range | –40 | 125 | °C |
Key Features
- Optimized for fast transient response
- Output current up to 1.5A
- Low dropout voltage of 340mV
- Low noise: 40µVRMS (10Hz to 100kHz)
- Quiescent current of 1mA
- No protection diodes needed
- Controlled quiescent current in dropout
- Fixed output voltages: 1.5V, 1.8V, 2.5V, 3.3V
- Adjustable output from 1.21V to 20V
- <1µA quiescent current in shutdown
- Stable with 10µF output capacitor and ceramic capacitors
- Reverse battery protection and no reverse current
- Thermal limiting
- AEC-Q100 qualified for automotive applications
Applications
- Automotive systems
- Industrial power supplies
- Telecommunications equipment
- Medical devices
- High-reliability systems requiring low noise and fast transient response
Q & A
- What is the maximum output current of the LT1963AEQ-1.8#PBF?
The maximum output current is 1.5A.
- What is the dropout voltage of the LT1963AEQ-1.8#PBF at 1.5A load current?
The dropout voltage is typically 0.45V.
- What are the available fixed output voltages for the LT1963A series?
The fixed output voltages are 1.5V, 1.8V, 2.5V, and 3.3V.
- What is the quiescent current of the LT1963AEQ-1.8#PBF?
The quiescent current is 1mA.
- Does the LT1963AEQ-1.8#PBF require protection diodes?
No, protection diodes are not needed.
- What is the operating temperature range of the LT1963AEQ-1.8#PBF?
The operating temperature range is –40°C to 125°C.
- Is the LT1963AEQ-1.8#PBF suitable for automotive applications?
- What type of capacitors can be used with the LT1963AEQ-1.8#PBF for stability?
The device is stable with 10µF output capacitors and ceramic capacitors.
- Does the LT1963AEQ-1.8#PBF have reverse battery protection?
- What is the noise level of the LT1963AEQ-1.8#PBF?
The noise level is 40µVRMS from 10Hz to 100kHz.
