Overview
The LM385Z-2.5/LFT3 is a micropower voltage reference produced by Texas Instruments. This component is part of the LM185-2.5, LM285-2.5, and LM385-2.5 series, known for their low power consumption and high accuracy. The LM385Z-2.5/LFT3 is specifically designed for applications requiring a stable 2.5V reference voltage with minimal current draw, making it ideal for battery-powered devices and other low-power systems.
Key Specifications
| Parameter | Conditions | Typical Value | Minimum Value | Maximum Value |
|---|---|---|---|---|
| Reference Voltage | TA = 25°C, 20 μA ≤ IR ≤ 20 mA | 2.5 V | 2.480 V | 2.520 V |
| Operating Current Range | 20 μA | 20 mA | ||
| Dynamic Impedance | A Grade | 0.6 Ω | ||
| Temperature Coefficient | X Suffix | 30 ppm/°C | ||
| Operating Temperature Range | 0°C | 70°C | ||
| Reverse Breakdown Voltage | IR = 100 μA | 2.462 V | 2.538 V | |
| Long Term Stability | IR = 100 μA, T = 1000 Hr | 20 ppm |
Key Features
- Low power consumption with an operating current range of 20 μA to 20 mA.
- High accuracy with an initial tolerance of ±0.8% (A Grade).
- Low dynamic impedance of 0.6 Ω (A Grade).
- Good temperature stability with a temperature coefficient as low as 30 ppm/°C (X Suffix).
- Wide operating temperature range from 0°C to 70°C.
- Available in various packages including TO-92, SOIC, and SOT-23.
- Exceptionally tolerant of capacitive loading.
- Low noise and good long-term stability due to on-chip trimming and the use of transistors and resistors.
Applications
- Battery-powered devices where low power consumption is critical.
- Portable meters and regulators.
- General-purpose analog circuitry requiring a stable reference voltage.
- Micropower circuitry in various electronic devices.
- Thermometers and other precision measurement instruments.
Q & A
- What is the reference voltage of the LM385Z-2.5/LFT3?
The reference voltage is 2.5V.
- What is the operating current range of the LM385Z-2.5/LFT3?
The operating current range is from 20 μA to 20 mA.
- What is the dynamic impedance of the LM385Z-2.5/LFT3?
The dynamic impedance is 0.6 Ω (A Grade).
- What is the temperature coefficient of the LM385Z-2.5/LFT3?
The temperature coefficient can be as low as 30 ppm/°C (X Suffix).
- What are the available packages for the LM385Z-2.5/LFT3?
The component is available in TO-92, SOIC, and SOT-23 packages.
- How tolerant is the LM385Z-2.5/LFT3 to capacitive loading?
The device is exceptionally tolerant of capacitive loading.
- What are some common applications of the LM385Z-2.5/LFT3?
Common applications include battery-powered devices, portable meters, regulators, and general-purpose analog circuitry.
- What is the operating temperature range of the LM385Z-2.5/LFT3?
The operating temperature range is from 0°C to 70°C.
- How does the LM385Z-2.5/LFT3 achieve low noise and stability?
The device achieves low noise and good long-term stability due to on-chip trimming and the use of transistors and resistors.
- What is the reverse breakdown voltage of the LM385Z-2.5/LFT3?
The reverse breakdown voltage is between 2.462 V and 2.538 V at IR = 100 μA.
