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STMicroelectronics TS4041CILT-1.2
- Part No.:
- TS4041CILT-1.2
- Manufacturer:
- STMicroelectronics
- Category:
- Voltage Reference
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
TS4041CILT-1.2.pdf
- Description:
- IC VREF SHUNT 0.5% SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:3,381
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Product details
Overview
TS4041CILT-1.2 from STMicroelectronics is a 0.5% initial accuracy, 1.225V micropower shunt voltage reference in SOT23-3 package, operating from 65µA min current over -40°C to +85°C, with 120ppm/°C tempco and 0.25Ω static impedance-used for precision feedback in battery-powered SMPS and portable instrumentation.
For engineers reviewing the TS4041CILT-1.2 datasheet, TS4041CILT-1.2 pinout, TS4041CILT-1.2 application, or TS4041CILT-1.2 equivalent, key selection criteria include initial tolerance (±0.5%), ultra-low operating current (65µA max), temperature coefficient (120ppm/°C), cathode current range (65µA–12mA), and stability with capacitive loads up to 100µF.
Technical Context
The TS4041CILT-1.2 functions as a two-terminal shunt reference, regulating voltage by sinking adjustable cathode current while maintaining 1.225V across its terminals. Its design relies on bandgap-derived Zener-like breakdown, optimized for low-current operation and minimal thermal drift.
It achieves ±0.5% initial accuracy at 25°C and maintains stability across –40°C to +85°C with 120ppm/°C average TC, supported by <0.5Ω static impedance and <2mV voltage shift over 65µA–1mA cathode current range-enabling high-accuracy closed-loop control in space-constrained systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 1.225V nominal; enables precise 1.2V system biasing and ADC reference scaling |
| Initial Accuracy | ±0.5% at 25°C; supports high-resolution feedback in ≤1% regulation loops |
| Tempco | 120ppm/°C max; ensures ≤0.1% output drift over full industrial temperature range |
| Min Operating Current | 65µA at 25°C; allows operation from micro-power LDOs or high-value bias resistors |
| Static Impedance | 0.25Ω typical; minimizes load-induced voltage error in dynamic current-sink applications |
| Long-Term Stability | 120ppm over 1000hrs; reduces calibration drift in field-deployed instrumentation |
| Noise Density | 200nV/√Hz (10Hz–10kHz); preserves SNR in precision analog front-ends |
Pinout & Package
SOT23-3L plastic micropackage (3.04mm × 2.64mm × 1.02mm), lead-free ECOPACK® compliant, surface-mountable with 0.95mm pin pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Pin 1) | Reference ground return path | Must be connected to system ground with low-inductance trace to minimize noise coupling |
| Cathode (Pin 2) | Regulated voltage output node | Sinks variable current to maintain 1.225V; connects to feedback divider or error amplifier input |
| NC (Pin 3) | No connection | Internally unconnected; left floating or tied to ground per layout best practice for EMI reduction |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low operating current | 65µA max enables >10-year battery life in coin-cell powered sensors |
| Capacitive load stability | Stable with 0–100µF ceramic or tantalum output caps-eliminates need for external compensation |
| Low static impedance | 0.25Ω ensures <16µV error per 64µA load transient-critical for fast-response power control |
| ECOPACK® compliance | Lead-free second-level interconnect meets RoHS and JEDEC JESD97 marking requirements |
Applications
| Battery Charger Feedback | Portable Multimeter Reference |
|---|---|
Use Scenario: Precision voltage sensing in single-cell Li-ion charger IC feedback loop. IC Role / Device Role / Timing Role: Shunt reference providing stable 1.225V setpoint for error amplifier comparison. Use Value: ±0.5% initial accuracy and 120ppm/°C TC ensure ≤1% charge termination voltage error across temperature and lifetime. | Use Scenario: DC voltage measurement reference in handheld 3½-digit multimeter. IC Role / Device Role / Timing Role: Primary voltage reference for 12-bit SAR ADC and auto-ranging circuitry. Use Value: 200nV/√Hz noise and 0.25Ω impedance preserve measurement resolution down to 1mV steps without averaging. |
| SMPS Output Regulation | IoT Sensor Node Bias |
Use Scenario: Secondary-side feedback reference in isolated flyback converter for industrial IoT gateway. IC Role / Device Role / Timing Role: Cathode-connected to optocoupler LED anode; regulates output via current modulation. Use Value: 65µA min operating current allows direct bias from 12V auxiliary winding through 180kΩ resistor-no extra LDO required. | Use Scenario: Supply rail stabilization for ultra-low-power environmental sensor ASIC in wireless node. IC Role / Device Role / Timing Role: Shunt regulator establishing clean 1.2V bias for internal bandgap and ADC reference. Use Value: 120ppm/°C TC and 120ppm/1000hrs long-term stability maintain sensor calibration accuracy over 5-year field deployment. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar shunt voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLVH431ACDBVR | 2.5V fixed output; 1% initial accuracy; 300ppm/°C tempco; 80µA min current | Requires resistor divider for 1.225V derivation; higher TC increases temp-induced error | Select when 2.5V reference suffices or existing designs use TLVH431 footprint |
| MAX6008AEUR+T | 1.25V output; 0.2% initial accuracy; 75ppm/°C tempco; 100µA min current | Higher accuracy and lower TC but consumes 54% more min current-reduces battery life | Select when sub-0.2% accuracy is mandatory and supply current budget allows ≥100µA |
Compared with TLVH431ACDBVR and MAX6008AEUR+T, the TS4041CILT-1.2 uniquely balances 0.5% accuracy, 120ppm/°C TC, and 65µA min current in SOT23-3-making it optimal for space- and power-constrained 1.2V reference applications where mid-tier precision suffices.
Availability
TS4041CILT-1.2 is available at Aetrix Electronics and suitable for battery chargers, portable instrumentation, switch-mode power supplies, and battery-operated equipment requiring stable component supply and long-lifecycle support.
Supply support for TS4041CILT-1.2 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, designing and manufacturing analog, MCU, power, and sensor solutions for industrial, automotive, and consumer markets.
The TS4041 series belongs to ST's precision analog portfolio, engineered specifically for low-power, high-stability voltage referencing in portable and energy-sensitive systems where space, current, and thermal performance are critical.
FAQ
What is the maximum cathode current the TS4041CILT-1.2 can safely handle?
The absolute maximum reverse breakdown current is 20mA, but the recommended maximum operating current is 12mA per electrical characteristics tables. Exceeding 12mA risks exceeding 360mW power dissipation in SOT23-3 at 25°C ambient, potentially causing thermal runaway or accelerated long-term drift. Derating is required above 25°C.
Can the TS4041CILT-1.2 drive a 10µF ceramic capacitor directly without oscillation?
Yes-the datasheet explicitly confirms high stability with capacitive loads, and Figure 5 shows stable pulse response with CL=10µF. No series resistance or external compensation is needed. This eliminates risk of instability in SMPS feedback paths using bulk output capacitance.
How does the 0.5% initial accuracy of TS4041CILT-1.2 compare to the TS4041DILT-1.2 and TS4041EILT-1.2 variants?
The TS4041CILT-1.2 offers ±0.5% initial tolerance at 25°C, tighter than the ±1% of TS4041DILT-1.2 and ±2% of TS4041EILT-1.2. All share identical tempco (120ppm/°C for C-grade, 150ppm/°C for D/E), static impedance, and noise specs-only initial accuracy and marking code (L231 vs L232/L233) differ.
Is the NC pin (Pin 3) in the SOT23-3 package required to be grounded?
No-Pin 3 is internally unconnected and may be left floating. However, grounding it improves EMI immunity in noisy environments and provides mechanical symmetry for reflow soldering. ST's recommended layout in Figure 3 shows Pin 3 grounded, though electrical function remains unaffected.
TS4041CILT-1.2 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Reference Type:
- Shunt
- Output Type:
- Fixed
- Voltage - Output (Min/Fixed):
- 1.225V
- Voltage - Output (Max):
- -
- Current - Output:
- 12 mA
- Tolerance:
- ±0.5%
- Temperature Coefficient:
- 120ppm/°C
- Noise - 0.1Hz to 10Hz:
- -
- Noise - 10Hz to 10kHz:
- -
- Voltage - Input:
- -
- Current - Supply:
- -
- Current - Cathode:
- 65 µA
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
TS4041CILT-1.2 FAQ
1.How can I place an order for TS4041CILT-1.2 through Aetrix?
Please submit a Request for Quotation (RFQ) for TS4041CILT-1.2 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for TS4041CILT-1.2 reliable?
The price and inventory of TS4041CILT-1.2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TS4041CILT-1.2 is usually 5 days.
3.What payment methods are accepted for TS4041CILT-1.2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TS4041CILT-1.2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TS4041CILT-1.2?
TS4041CILT-1.2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TS4041CILT-1.2 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for TS4041CILT-1.2?
For technical support, including TS4041CILT-1.2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TS4041CILT-1.2 requirements.
6.How does Aetrix verify that TS4041CILT-1.2 is sourced from the original manufacturer or authorized distributors?
All TS4041CILT-1.2 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that TS4041CILT-1.2 meets industry standards.
7.What is the process for return or replacement of TS4041CILT-1.2?
All TS4041CILT-1.2 units undergo pre-shipment inspection (PSI). If there is an issue with TS4041CILT-1.2, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The TS4041CILT-1.2 part is unused and in its original packaging.
Return procedure for TS4041CILT-1.2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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