仕様
| 属性 | 値 |
| Package / Case | Tape & Reel (TR),Cut Tape (CT),Bulk |
| Series | Automotive, AEC-Q100 |
| Part Status | Active |
| Reference Type | Shunt |
| Output Type | Adjustable |
| Voltage - Output (Min/Fixed) | 2.495V |
| Voltage - Output (Max) | 36 V |
| Current - Output | 100 mA |
| Tolerance | ±0.4% |
| Temperature Coefficient | 50ppm/°C Typical |
| Current - Cathode | 1 mA |
| Operating Temperature | -40°C ~ 125°C (TA) |
| Mounting Type | Surface Mount |
概要
Description
NCV431BVDR2G is ON Semiconductor’s NCV431 family: a 3‑terminal precision shunt regulator (programmable zener) with a fixed reference of about 2.495 V. It functions like a TL431 in a single IC: anode, cathode, and reference pin, and it regulates the cathode current to keep the reference node at Vref when driven by an external resistor divider.
Key points:
- Vref: nominal ~2.495 V (accuracy varies by grade).
- External resistors set the regulation threshold; the device conducts to clamp the output when the reference is reached.
- Used as a precision reference or error amplifier in power supplies, battery chargers, and regulation loops.
- Typical operating range: supports cathode current from a small minimum up to tens of milliamps; maximum cathode voltage around 30–36 V (check datasheet for exact limits).
- Package: small 3‑pin devices (SOT-23/SC‑70 family); DR2G denotes a specific tape-and-reel packaging code.
In short: a TL431‑style, low‑power shunt regulator ideal for adjustable, precise regulation in analog and power-supply circuits.
Key points:
- Vref: nominal ~2.495 V (accuracy varies by grade).
- External resistors set the regulation threshold; the device conducts to clamp the output when the reference is reached.
- Used as a precision reference or error amplifier in power supplies, battery chargers, and regulation loops.
- Typical operating range: supports cathode current from a small minimum up to tens of milliamps; maximum cathode voltage around 30–36 V (check datasheet for exact limits).
- Package: small 3‑pin devices (SOT-23/SC‑70 family); DR2G denotes a specific tape-and-reel packaging code.
In short: a TL431‑style, low‑power shunt regulator ideal for adjustable, precise regulation in analog and power-supply circuits.
Equivalent
NCV431BVDR2G is a 2.495 V adjustable shunt regulator (TL431 family). Equivalents drop in as 3-pin shunt regulators: TL431 (and TL431A/TL431B/TL431C), TLV431 (TI), LMV431/LMV431A (ST), NCP431/NCP431A (ON Semiconductor). All have ~2.5 V reference and similar cathode current ranges; match package (SOT-23/SC-70) as needed.
Features
Key features of NCV431BVDR2G (TL431‑style shunt regulator):
- 2.495 V precision reference (TL431-compatible)
- 3-terminal adjustable shunt regulator
- 1% reference accuracy
- Cathode current up to about 100 mA (requires a minimum current ~1 mA to regulate)
- Wide operating voltage (cathode-to-anode up to ≈ 36 V)
- Low dynamic impedance with good line and load regulation
- Temperature range: -40 °C to +125 °C (industrial/automotive capability)
- Suitable as precision reference or adjustable zener in regulator circuits
- Package: 3-pin SMD (D‑Pak/SOT‑23 family variant), with tape-and-reel option (DR2G)
Note: Exact packaging and automotive ratings may vary by lot; consult the datasheet for final specifications.
- 2.495 V precision reference (TL431-compatible)
- 3-terminal adjustable shunt regulator
- 1% reference accuracy
- Cathode current up to about 100 mA (requires a minimum current ~1 mA to regulate)
- Wide operating voltage (cathode-to-anode up to ≈ 36 V)
- Low dynamic impedance with good line and load regulation
- Temperature range: -40 °C to +125 °C (industrial/automotive capability)
- Suitable as precision reference or adjustable zener in regulator circuits
- Package: 3-pin SMD (D‑Pak/SOT‑23 family variant), with tape-and-reel option (DR2G)
Note: Exact packaging and automotive ratings may vary by lot; consult the datasheet for final specifications.
Pinout
Pin count: 3 pins.
Function: A TL431‑type 3-terminal adjustable shunt voltage reference/regulator. Pins are Cathode, Anode, and Reference. It acts as a precision programmable zener: when the REF pin sees about 2.495 V (via a divider), the device conducts between Cathode and Anode to regulate the output at that reference voltage. Packaging DR2G indicates the RoHS SOT-23 style.
Function: A TL431‑type 3-terminal adjustable shunt voltage reference/regulator. Pins are Cathode, Anode, and Reference. It acts as a precision programmable zener: when the REF pin sees about 2.495 V (via a divider), the device conducts between Cathode and Anode to regulate the output at that reference voltage. Packaging DR2G indicates the RoHS SOT-23 style.
Manufacturer
- Manufacturer: ON Semiconductor.
- About the company: An American multinational semiconductor company that designs, manufactures, and sells energy-efficient electronic components, including analog, power-management, sensors, and other ICs for automotive, industrial, communications, and consumer markets.
- About the company: An American multinational semiconductor company that designs, manufactures, and sells energy-efficient electronic components, including analog, power-management, sensors, and other ICs for automotive, industrial, communications, and consumer markets.
Application
NCV431BVDR2G is a programmable shunt regulator (TL431‑family) acting as a precision reference and error amplifier. Key applications:
- Feedback reference in switch-mode power supplies (SMPS/DC‑DC)
- Post‑regulation/linear regulator reference
- Voltage reference for instrumentation, ADCs, and microcontroller supplies
- Battery‑charging/voltage-sense networks
- Overvoltage monitoring and crowbar/protection circuits
- General-purpose programmable zener substitute in analog circuits
Packaging: compact SOT-23 style (appropriate for surface-mount designs).
- Feedback reference in switch-mode power supplies (SMPS/DC‑DC)
- Post‑regulation/linear regulator reference
- Voltage reference for instrumentation, ADCs, and microcontroller supplies
- Battery‑charging/voltage-sense networks
- Overvoltage monitoring and crowbar/protection circuits
- General-purpose programmable zener substitute in analog circuits
Packaging: compact SOT-23 style (appropriate for surface-mount designs).
Package
3-pin SOT-23 (SC-70) surface-mount package.
