TLVH431BIL3T

TLVH431BIL3T is TI’s TLV431-based programmable shunt voltage reference (a 3‑terminal adjustable shunt regulator). It behaves like a precision, adjustable zener: the internal reference is ~2.495 V, and with an external resistor divider from output to the REF pin, the device sinks current to regulate the output voltage in feedback loops.
Key points
- Reference: nominal Vref ≈ 2.495 V
- 3-pin shunt regulator (Anode, Cathode, Ref) in a compact package
- Used as the feedback/ regulation element in DC–DC converters, linear regulators, and battery chargers
- Requires a minimum cathode current to maintain regulation (typical I_K(min) around 1 mA) and can sink up to tens of mA (I_K(max) depends on variant)
- Wide input/output range within the device’s limits
For exact electrical specs (tolerance, dynamic impedance, current limits, temperature range, and package details), consult the TLVH431BIL3T datasheet.

TLVH431BIL3T is a 2.495 V programmable shunt regulator (TL431 family). Equivalents include: TL431/TLV431/TLVH431, LMV431 (and LMV431A), NCP431, KA431, AZ431. These are 2.495 V shunt references from different vendors. Verify packaging/pinout (SOT-23, TO-92, etc.) and qualification for your design.

TLVH431BIL3T features (concise):
- Precision programmable shunt regulator with a 2.495 V reference
- Output set by external resistor divider (Vout ≈ Vref × (1 + R1/R2)); flexible as reference or regulator
- Wide supply range up to about 36 V; supports low, medium, and high-current operation
- Low dynamic impedance with good line and load regulation
- Stable across temperature with good accuracy from -40°C to 125°C
- Low quiescent current and fast response from the internal error amplifier
- Three-terminal device designed for simple, compact regulation and DAC reference use
- RoHS-compliant, lead-free package suitable for compact designs
Applications: precision voltage references, DAC reference sources, voltage regulators, and voltage monitoring/crowbar protection circuits.

- Pin count: 3
- Function: Adjustable precision shunt regulator (programmable zener/voltage reference) with three pins: Anode, Cathode, and Reference. The REF pin sets regulation; the device holds the cathode-to-anode voltage at about 2.495 V (via feedback through the REF pin).

- Manufacturer: Texas Instruments Incorporated (TI)
- What kind of company: An American multinational technology company and leading semiconductor manufacturer that designs and produces a wide range of analog, mixed-signal, and digital integrated circuits for automotive, industrial, communications, consumer, and other markets.

TLVH431BIL3T is a high‑voltage programmable shunt regulator (Vref ~2.495 V). Common applications:
- Precision voltage reference for ADC/DAC and instrumentation.
- Error amplifier/reference in linear regulators and switch‑mode power supplies (regulation via feedback).
- Programmable zener substitute for voltage regulation up to high voltages (up to ~36 V input).
- Post‑regulation and overvoltage protection in power supplies.
- LED constant‑current driver in CC/CV LED driver circuits.
- CV/CC regulation and protection in battery charger circuits.
Note: Ideal for references, regulation, and protective roles in high‑voltage circuits.

SOT-23-3 (3-pin) surface-mount package, RoHS/lead-free variant.