TLV431BCDBZR
Adjustable low-voltage precision shunt regulators in compact SOT-23 package
Manufacturer： ['rochester', 'ti']
series introduction
# TLV431BCDBZR Product Series Introduction
## 1. Overview
The TLV431BCDBZR is a precision adjustable shunt voltage reference belonging to a high - performance product series. It is designed to provide a stable and accurate voltage reference in a wide range of electronic circuits. This device is highly regarded in the electronics industry for its excellent performance characteristics, reliability, and cost - effectiveness.
## 2. Key Features
### 2.1 High Precision
- The TLV431BCDBZR offers a very low initial tolerance. With a typical initial tolerance of ±0.4%, it can provide a highly accurate reference voltage. This precision is crucial in applications where accurate voltage regulation is required, such as in power supplies, battery chargers, and measurement instruments.
- It also has a low temperature coefficient, typically around 50 ppm/°C. This means that the reference voltage changes very little with temperature variations, ensuring stable performance over a wide temperature range from - 40°C to 125°C.
### 2.2 Adjustable Output Voltage
- One of the most significant features of the TLV431BCDBZR is its adjustable output voltage. The output voltage can be set anywhere between 2.5V and 36V by simply using two external resistors. This flexibility makes it suitable for a wide variety of applications with different voltage requirements.
### 2.3 Low Dynamic Output Impedance
- It has a low dynamic output impedance, typically around 0.2Ω. This low impedance allows the device to supply or sink current without significant voltage drops, ensuring a stable output voltage even when the load current changes.
### 2.4 High Current Sinking Capability
- The TLV431BCDBZR can sink a relatively high current, up to 100mA. This high current - sinking ability makes it suitable for driving loads directly or for use in circuits where a significant amount of current needs to be regulated.
## 3. Package and Pin Configuration
### 3.1 Package Type
The TLV431BCDBZR comes in a SOT - 23 - 3 package. This is a small - outline surface - mount package that is widely used in modern electronic designs due to its compact size and ease of assembly. The small form factor makes it suitable for applications where space is limited, such as in mobile devices, portable electronics, and miniaturized circuit boards.
### 3.2 Pin Configuration
- **Anode (A)**: This pin is connected to the negative supply or ground in most applications. It is the terminal through which the current flows out of the device.
- **Cathode (K)**: The cathode is the positive terminal of the device. It is connected to the positive supply voltage or the load. The current flows into the device through this pin.
- **Reference (R)**: The reference pin is used to set the output voltage. By connecting two external resistors between the cathode, reference, and anode, the user can adjust the output voltage according to their requirements.
## 4. Applications
### 4.1 Power Supplies
- In linear and switching power supplies, the TLV431BCDBZR can be used as a voltage reference for feedback control. It helps to regulate the output voltage of the power supply, ensuring that it remains stable under different load conditions and input voltage variations. For example, in a DC - DC converter, it can be used to maintain a constant output voltage by comparing the actual output voltage with the reference voltage provided by the TLV431BCDBZR.
### 4.2 Battery Chargers
- Battery chargers require accurate voltage regulation to ensure safe and efficient charging of batteries. The TLV431BCDBZR can be
Images for reference
SOT-23-3
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