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Product Detailed Parameters
- Description：IC VREF SERIES 0.5% 8SO
- Series：-
- Mfr：STMicroelectronics
- Package：Tape & Reel (TR),Cut Tape (CT)
- Output Type：Fixed
- Voltage - Output (Min/Fixed)：2.545V
- Voltage - Output (Max)：-
- Current - Output：1 mA
- Operating Temperature：0°C ~ 105°C (TA)
- Mounting Type：Surface Mount
- Package / Case：8-SOIC (0.154", 3.90mm Width)
- Supplier Device Package：8-SOIC
- Grade：-
- Qualification：-
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Overview
The TSM1011IDT is a highly integrated voltage reference and dual operational amplifier IC designed for switch-mode power supply applications. It provides a fixed output voltage of 2.545 V with a precision tolerance of ±0.5%. The device operates within an input voltage range of 4.5 V to 28 V and supports a maximum operating temperature of +105 °C. Packaged in an 8-SOIC surface-mount format, it integrates essential components for constant voltage and constant current control loops.
Feature Summary
- Integrates a high-precision bandgap voltage reference with two operational amplifiers featuring ORed outputs for simplified control loop design.
- Enables seamless transition between constant voltage and constant current modes, optimizing battery charging profiles and power delivery.
- Features a low external component count and current sink output stage to reduce electrical stress and simplify compensation.
Applications
- Constant voltage and constant current battery chargers
- AC-DC adapters with secondary side regulation
- LED drivers requiring precise current limiting
Procurement Notes
Verify the specific suffix IDT indicates tape and reel packaging when sourcing. Confirm the ±0.5% accuracy grade matches design requirements against lower precision variants. Ensure compatibility with 8-SOIC footprint dimensions during PCB layout. Check moisture sensitivity level handling procedures prior to assembly.
Selection Notes
Select this variant for designs requiring higher voltage reference accuracy compared to standard 1% tolerance parts. The integrated dual op-amp structure reduces board space compared to discrete solutions. Verify that the 2.545 V reference aligns with feedback network resistor values. Consider thermal performance within the SO-8 package for high-power adapter applications.
Part Context
Part of the TSM101x family of advanced SMPS controllers from STMicroelectronics. This series targets high-efficiency adapters by integrating multiple functions into a single monolithic IC. The family includes variants with different accuracy grades and reference voltages to suit various cost and performance tiers.
Replacement Considerations
TSM1011IST offers similar functionality but may differ in packaging or accuracy specifications. TSM1014ID provides a 1.25 V reference instead of 2.545 V, requiring circuit redesign. Verify pinout compatibility and electrical parameters before substituting any alternative part numbers.
