Overview
The TL431BIPKG3, produced by Texas Instruments, is a precision programmable reference voltage regulator. It is part of the TL431 series, which includes three-terminal adjustable shunt regulators known for their thermal stability across various temperature ranges. These devices are versatile and can be used in a wide range of applications, including on-board regulation, adjustable power supplies, and switching power supplies. The TL431BIPKG3 offers a sharp turn-on characteristic, making it an excellent replacement for Zener diodes in many scenarios.
Key Specifications
| Parameter | Value |
|---|---|
| Reference Voltage Tolerance at 25°C | 0.5% (B grade), 1% (A grade), 2% (Standard grade) |
| Adjustable Output Voltage | Vref to 36 V |
| Operating Temperature Range | −40°C to 125°C |
| Typical Temperature Drift | 6 mV (C temp), 14 mV (I temp, Q temp) |
| Output Impedance | 0.2 Ω typical |
| Sink-Current Capability | 1 mA to 100 mA |
| Package Type | SOT-89 (PK) |
| Pins | 3 |
| Body Size | Not specified for SOT-89, but generally small form factor |
Key Features
- Reference voltage tolerance at 25°C: 0.5% (B grade), 1% (A grade), 2% (Standard grade)
- Adjustable output voltage: Vref to 36 V
- Operation from −40°C to 125°C
- Low output noise and 0.2 Ω typical output impedance
- Sink-current capability: 1 mA to 100 mA
- Sharp turn-on characteristic, making it a good replacement for Zener diodes
Applications
- Rack server power
- Industrial AC/DC power supplies
- AC inverter and VF drives
- Servo drive control modules
- Notebook PC power adapter design
- On-board regulation, adjustable power supplies, and switching power supplies
Q & A
- What is the TL431BIPKG3 used for? The TL431BIPKG3 is used as a precision programmable reference voltage regulator in various applications such as on-board regulation, adjustable power supplies, and switching power supplies.
- What are the reference voltage tolerances for the TL431BIPKG3? The reference voltage tolerances are 0.5% (B grade), 1% (A grade), and 2% (Standard grade) at 25°C.
- What is the adjustable output voltage range of the TL431BIPKG3? The adjustable output voltage range is from Vref to 36 V.
- What is the operating temperature range of the TL431BIPKG3? The operating temperature range is from −40°C to 125°C.
- What is the typical output impedance of the TL431BIPKG3? The typical output impedance is 0.2 Ω.
- What is the sink-current capability of the TL431BIPKG3? The sink-current capability is from 1 mA to 100 mA.
- In what package is the TL431BIPKG3 available? The TL431BIPKG3 is available in the SOT-89 (PK) package.
- What are some common applications of the TL431BIPKG3? Common applications include rack server power, industrial AC/DC power supplies, AC inverter and VF drives, servo drive control modules, and notebook PC power adapter design.
- Why is the TL431BIPKG3 a good replacement for Zener diodes? The TL431BIPKG3 has a sharp turn-on characteristic, making it an excellent replacement for Zener diodes in many applications.
- What is the typical temperature drift of the TL431BIPKG3? The typical temperature drift is 6 mV (C temp) and 14 mV (I temp, Q temp).
