ATL431BQDBZRG4 Texas Instruments Integrated Circuit (SOT23 (3-Pin)) In Stock
The ATL431BQDBZRG4 is a precision adjustable shunt voltage regulator from Texas Instruments, offering a programmable output voltage from 2.5V to 36V in a compact 3-pin SOT-23 package. It provides stable voltage regulation with low reference tolerance for a wide range of power supply feedback and reference applications. Available from stock with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- SOT23 (3-Pin)
- Pin Count
- 3
- Lifecycle
- ACTIVE
- Datasheet
- ATL431BQDBZRG4 Datasheet PDF
- Category
- Integrated Circuit
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Adjustable output voltage from 2.5V to 36V enabling flexible voltage reference and regulation across diverse circuit designs
- Precision shunt regulator architecture providing stable, accurate voltage clamping for power supply feedback loops
- Ultra-compact 3-pin SOT-23 package ideal for space-constrained designs in portable and embedded systems
- Low reference voltage tolerance ensuring tight accuracy for analog signal conditioning and ADC reference circuits
- Lead-free and RoHS-compliant construction for use in environmentally responsible end products
Applications
The ATL431BQDBZRG4 is widely used as a precision voltage reference and feedback element in switch-mode power supplies, linear regulators, and isolated converter error amplifiers. It is also employed in battery chargers, instrumentation circuits, and precision analog signal chains where a programmable, stable shunt reference between 2.5V and 36V is required.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for ATL431BQDBZRG4:
Frequently Asked Questions
What is the output voltage range of the ATL431BQDBZRG4?
The ATL431BQDBZRG4 offers an adjustable regulated output voltage from 2.5V to 36V, set by an external resistor divider. This flexibility allows it to serve as a precise reference or error amplifier in a wide variety of power supply topologies.
What package does the ATL431BQDBZRG4 use?
The ATL431BQDBZRG4 comes in a 3-pin SOT-23 package, one of the smallest surface-mount packages available. This ultra-compact footprint is ideal for portable electronics, wearable devices, and any PCB design where board space is at a premium.
What are typical applications for the ATL431BQDBZRG4?
Typical applications include feedback voltage reference in flyback and buck converters, precision shunt regulation in battery management circuits, programmable voltage references in instrumentation amplifiers, and error amplification in isolated power supply designs requiring tight output voltage control.
How does the ATL431BQDBZRG4 compare to a standard TL431?
The ATL431BQDBZRG4 is an enhanced variant of the classic TL431 shunt regulator, offering improved reference accuracy and tighter tolerance. Its 3-pin SOT-23 footprint is smaller than the traditional TO-92 or SOIC packages, making it better suited for modern compact PCB layouts.
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About Texas Instruments
Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.
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