Overview
The LT1790BCS6-1.25#TRMPBF is a part of the LT1790 family of micropower low dropout series references produced by Analog Devices Inc. This component combines high accuracy and low drift with low power dissipation and a small package size, making it ideal for battery-operated systems. The LT1790 series uses curvature compensation to achieve a low temperature coefficient and employs trimmed precision thin-film resistors to ensure high output accuracy. Each device is post-package trimmed to further reduce the temperature coefficient and enhance output accuracy.
Key Specifications
| Parameter | Min | |||
|---|---|---|---|---|
| Output Voltage | 1.2475 | 1.25 | 1.2525 | V |
| Output Voltage Temperature Coefficient | 10 | - | 25 | ppm/°C |
| Line Regulation (3V ≤ VIN ≤ 18V) | 50 | - | 220 | ppm/V |
| Load Regulation (IOUT Source = 5mA) | 80 | - | 250 | ppm/mA |
| Load Regulation (IOUT Sink = 3mA) | 70 | - | 300 | ppm/mA |
| Dropout Voltage (VIN - VOUT, ΔVOUT = 0.1%) | 50 | - | 450 | mV |
| Supply Current (No Load) | 35 | - | 80 | µA |
| Input Voltage | - | - | 20 | V |
| Operating Temperature Range | 0 | - | 70 | °C |
| Package Type | - | - | 6-Lead TSOT-23 | - |
Key Features
- High accuracy and low drift output voltage.
- Low power dissipation and small package size (6-Lead TSOT-23).
- Curvature compensation for low temperature coefficient.
- Trimmed precision thin-film resistors for high output accuracy.
- Post-package trimming to reduce temperature coefficient and enhance output accuracy.
- Excellent line and load regulation.
- Ability to operate as a micropower negative voltage reference.
- Low supply current and reduced dropout voltage, making it suitable for battery-operated systems.
Applications
- Battery-operated systems due to low power consumption and small size.
- Precision voltage regulation in various electronic devices.
- Low dropout voltage applications requiring high accuracy and stability.
- Portable and handheld devices where power efficiency is crucial.
- Industrial and automotive systems requiring reliable voltage references.
Q & A
- What is the typical output voltage of the LT1790BCS6-1.25#TRMPBF?
The typical output voltage is 1.25V.
- What is the temperature coefficient of the LT1790BCS6-1.25#TRMPBF?
The temperature coefficient is 10 ppm/°C to 25 ppm/°C.
- What is the line regulation of the LT1790BCS6-1.25#TRMPBF?
The line regulation is 50 ppm/V to 220 ppm/V over the input voltage range of 3V to 18V.
- What is the load regulation of the LT1790BCS6-1.25#TRMPBF?
The load regulation is 80 ppm/mA to 250 ppm/mA for a source current of 5mA and 70 ppm/mA to 300 ppm/mA for a sink current of 3mA.
- What is the dropout voltage of the LT1790BCS6-1.25#TRMPBF?
The dropout voltage is 50 mV to 450 mV.
- What is the supply current of the LT1790BCS6-1.25#TRMPBF under no load conditions?
The supply current is 35 µA to 80 µA.
- What is the maximum input voltage for the LT1790BCS6-1.25#TRMPBF?
The maximum input voltage is 20V.
- What is the operating temperature range for the LT1790BCS6-1.25#TRMPBF?
The operating temperature range is 0°C to 70°C.
- What package type is the LT1790BCS6-1.25#TRMPBF available in?
The package type is 6-Lead TSOT-23.
- Can the LT1790BCS6-1.25#TRMPBF operate as a negative voltage reference?
Yes, it can operate as a micropower negative voltage reference with the same performance as a positive reference.
- Why is the LT1790BCS6-1.25#TRMPBF suitable for battery-operated systems?
It is suitable due to its low power consumption, reduced dropout voltage, and small package size.
