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TL431BQDBZR,215

Name: TL431BQDBZR,215
Rating: 4.7 (12 reviews)

IC VREF SHUNT ADJ 0.5% TO236AB

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製造商。部分 #TL431BQDBZR,215
包 SOT23-3
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規格

Package	Tape & Reel (TR),Cut Tape (CT)
ProductStatus	Active
ReferenceType	Shunt
OutputType	Adjustable
Voltage-Output(Min/Fixed)	2.495V
Voltage-Output(Max)	36 V
Current-Output	100 mA
Tolerance	±0.5%
Current-Cathode	600 µA
OperatingTemperature	-40°C ~ 125°C (TA)
MountingType	Surface Mount
Package/Case	TO-236-3, SC-59, SOT-23-3

概述

Description

TL431BQDBZR-215 is a member of the TL431 family: a programmable precision shunt regulator (an adjustable “zener”) with a 2.495 V internal reference. It uses an external resistor divider to set the regulation point and sinks current from cathode to anode to keep the feedback voltage at ~2.495 V.
Key points:
- Reference: ~2.495 V; external resistors set the output setpoint.
- Operation: behaves like an error amplifier in a feedback loop (used in PSU regulators, linear regulators, battery chargers, overvoltage protection).
- Practical ranges: allows regulation over typical supply voltages up to ~30–36 V; cathode current is driven in a few mA to tens of mA to maintain regulation.
- Packaging suffix BQDBZR implies Pb‑free, RoHS compliant, likely a small 3-pin package (SOT-23-3) with tape/reel; 215 is a date/lot code.
Common uses: serve as the reference/feedback element in DC-DC converters or as a precision reference in analog circuits.

Features

TL431BQDBZR,215 features (TL431 family):
- Precision adjustable shunt regulator with 2.495 V reference
- External resistor divider sets output: Vout ≈ Vref(1+R1/R2) + Iref·R1
- Wide operating voltage: cathode-to-anode up to about 36 V
- Current sink capability: typically 1 mA to 100 mA (regulation range)
- Tight accuracy: around 0.5% (A-grade) to ~1% (standard) at 25°C
- Good line and load regulation, low dynamic impedance
- Temperature range generally suitable for industrial use (−40°C to +125°C)
- Three-terminal device (cathode, anode, reference) acting as a programmable zener
- RoHS/Pb-free package options (various small-signal/surface-mount packages)
Applications: precision voltage reference, adjustable shunt regulator, feedback/regulation circuits.

Package

SOT-23-3 (SC-70) surface-mount package.

Pinout

- Pin count: 3 pins
- Function: Programmable precision shunt regulator (adjustable Zener) with a 2.495 V reference. It uses the REF pin for a regulation reference and shunts current between the Cathode and Anode to regulate a voltage in feedback systems (e.g., power-supply regulation). Pin names: REF, ANODE, CATHODE.

Manufacturer

Manufacturer: Renesas Electronics Corporation.
What kind of company: Renesas is a Japanese multinational semiconductor company that designs and manufactures ICs, including microcontrollers, analog/power devices, and other semiconductor components for automotive, industrial, and consumer markets.

Application

TL431BQDBZR is a programmable shunt regulator (precision ~2.495 V reference). Common applications:
- Feedback/reference element in linear and switching power supplies (SMPS)
- Adjustable precision reference for regulators and op-amp circuits
- LED constant-current drivers
- Overvoltage protection/crowbar circuits
- Post-regulation reference in flyback/buck/boost converters
- Battery charger regulation and general PSU regulation
(Note: “215” likely a date/lot code.)

Equivalent

TL431BQDBZR is a 2.495V adjustable shunt regulator. Common equivalents:
- TL431 (TI) – standard
- LM431 / LMV431 (National Semiconductor/TI) – classic equivalents
- TLV431 (TI) – low-voltage variant
- AD431 (Analog Devices)
- NCP431 (ON Semiconductor)
Note: pinout and accuracy vary by package and revision; verify datasheets for your board and current/temperature specs.