Overview
The TLVH431AIL3T is a low power adjustable shunt voltage reference produced by STMicroelectronics. It is designed to offer guaranteed temperature stability over the entire operating temperature range. This component allows for adjustable output voltage, ranging from 1.24 V to 18 V, using an external resistor divider. The TLVH431AIL3T operates with a low operating current of 100 μA at 25 °C, making it suitable for power-restricted designs. It is available in the SOT23-3L package, which is ideal for applications where space saving is critical.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Reference Voltage | 1.24 V | V |
| Voltage Precision | ±0.5% | % |
| Operating Current Range | 100 μA to 60 mA | A |
| Dynamic Impedance | 0.22 Ω (typical) | Ω |
| Operating Temperature Range | -40 to +125 °C | °C |
| Maximum Temperature Coefficient | 100 ppm/°C | ppm/°C |
| Package Type | SOT23-3L | - |
Key Features
- Adjustable output voltage: 1.24 V to 18 V using an external resistor divider
- Low operating current: 100 μA at 25 °C
- Voltage precision options: 0.25%, 0.5%, 1%, and 1.5%
- Sink current capability up to 60 mA
- Wide operating temperature range: -40 to +125 °C
- Low dynamic impedance: 0.22 Ω (typical)
- Available in SOT23-3L, SOT23-5L, and SOT323-6L packages
Applications
- Adjustable voltage reference for data converters
- Secondary side regulation in flyback SMPSs
- Zener replacement with low leakage current
- Voltage monitoring for power rails
- Comparator with integrated reference
- Computers and battery chargers
- Switch mode power supplies and battery-operated equipment
- Data acquisition systems and energy management
Q & A
- What is the adjustable output voltage range of the TLVH431AIL3T?
The output voltage can be set to any value between 1.24 V and 18 V using an external resistor divider.
- What is the typical operating current of the TLVH431AIL3T at 25 °C?
The typical operating current is 100 μA at 25 °C.
- What are the available voltage precision options for the TLVH431?
The voltage precision options are 0.25%, 0.5%, 1%, and 1.5%.
- What is the maximum sink current capability of the TLVH431AIL3T?
The maximum sink current capability is up to 60 mA.
- What is the operating temperature range of the TLVH431AIL3T?
The operating temperature range is -40 to +125 °C.
- What is the typical dynamic impedance of the TLVH431AIL3T?
The typical dynamic impedance is 0.22 Ω.
- In which packages is the TLVH431 available?
The TLVH431 is available in SOT23-3L, SOT23-5L, and SOT323-6L packages.
- What are some common applications of the TLVH431?
Common applications include adjustable voltage references for data converters, secondary side regulation in flyback SMPSs, Zener replacement, voltage monitoring for power rails, and comparators with integrated references.
- How does the TLVH431AIL3T handle temperature stability?
The TLVH431AIL3T has guaranteed temperature stability over the entire operating temperature range.
- What is the maximum junction temperature of the TLVH431AIL3T?
The maximum junction temperature is +150 °C.
