TS3431BILT STMicroelectronics Integrated Circuit (SOT23 (3-Pin)) In Stock
TS3431BILT is a two-terminal adjustable voltage reference from STMicroelectronics in 3-pin SOT-23 package. Output voltage is adjustable from 1.24 V to 24 V with up to 100 mA sink current. From $0.20 in stock worldwide shipping.
- Manufacturer
- STMicroelectronics
- Package
- SOT23 (3-Pin)
- Pin Count
- 3
- Lifecycle
- ACTIVE
- Datasheet
- TS3431BILT Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.1676(MOQ 25)
- Temp Range
- -40.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Adjustable output voltage from 1.24 V to 24 V using two external resistors
- Up to 100 mA cathode current for powering low-current loads directly
- Tight 0.5% reference voltage accuracy enabling precise regulation
- Compact 3-pin SOT-23 package ideal for space-constrained PCB layouts
Applications
TS3431BILT is used in switch-mode power supply feedback networks and linear regulators requiring a precision adjustable voltage reference. It is also deployed in battery charger circuits and voltage monitoring designs where a compact 3-pin SOT-23 footprint and adjustable 1.24 V to 24 V range are needed.
Specifications
| Factory Lead Time | 12Weeks |
| YTEOL | 7 |
| Additional Feature | OUTPUT VOLTAGE ADJUSTABLE FROM 1.24V TO 24V |
| Analog IC - Other Type | TWO TERMINAL VOLTAGE REFERENCE |
| JESD-30 Code | R-PDSO-G3 |
| JESD-609 Code | e3 |
| Number of Functions | 1 |
| Number of Outputs | 1 |
| Output Current-Max | 0.1A |
| Output Voltage-Max | 1.246V |
| Output Voltage-Min | 1.234V |
| Output Voltage-Nom | 1.24V |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | TO-236 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, THIN PROFILE, SHRINK PITCH |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| Supply Voltage-Max (Vsup) | 24V |
| Supply Voltage-Min (Vsup) | 1.24V |
| Surface Mount | YES |
| Technology | CMOS |
| Temp Coef of Voltage-Max | 100ppm/°C |
| Temperature Grade | AUTOMOTIVE |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.95mm |
| Terminal Position | DUAL |
| Trim/Adjustable Output | YES |
| Package | SOT23 (3-Pin) |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.60 |
| Country of Origin | Malaysia |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for TS3431BILT:
suggested
Frequently Asked Questions
Over what voltage range can TS3431BILT be adjusted in a feedback regulation circuit?
TS3431BILT supports output voltage adjustment from 1.24 V up to 24 V by selecting appropriate external resistor divider values. The internal reference voltage is 1.24 V, and the 100 mA maximum cathode current allows direct use as a shunt reference in low-power regulation designs.
What is the maximum sink current of TS3431BILT and how does it affect load capability?
TS3431BILT can sink up to 100 mA of cathode current, making it suitable for feedback networks and light-load shunt regulator configurations. For designs requiring higher load currents, the device is typically used as the reference element in combination with an external pass transistor to handle loads beyond 100 mA.
How does TS3431BILT compare to a TL431 in a compact PCB design?
TS3431BILT is functionally equivalent to TL431 but housed in a 3-pin SOT-23 package versus TL431's larger SOT-23-5 or TO-92. The smaller 3-pin SOT-23 footprint saves approximately 30% PCB area, making TS3431BILT the preferred choice for space-constrained power supply feedback and 1.24 V to 24 V reference applications.
In which power supply topologies is TS3431BILT most commonly used as an output voltage reference?
TS3431BILT is widely used in flyback and buck converter output feedback loops, where the 1.24 V reference sets the regulation point via a resistor divider. It is also used in LED driver current control and precision bias generation circuits operating from supply rails up to 24 V.
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| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 25+ | $0.4600 | $11.50 |
| 100+ | $0.3600 | $36.00 |
| 250+ | $0.3300 | $82.50 |
| 500+ | $0.3167 | $158.36 |
| 1000+ | $0.2830 | $283.00 |
| 3000+ | $0.1676 | $502.80 |
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