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STMicroelectronics TSM1014AID
- Part No.:
- TSM1014AID
- Manufacturer:
- STMicroelectronics
- Category:
- Voltage Reference
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TSM1014AID.pdf
- Description:
- IC VREF SERIES 0.5% 8SO
- Quantity:
- Payment:
- Shipping:
Inventory:1,523
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Product details
Overview
TSM1014AID from STMicroelectronics is a dual-op-amp-based CV/CC controller IC for secondary-side feedback in flyback adapters and battery chargers, featuring 1.25 V ±0.5% voltage reference, 100–180 µA supply current, 65–100 dB supply voltage rejection, and SO-8 package with integrated 2 kV HBM ESD protection.
For engineers reviewing the TSM1014AID datasheet, TSM1014AID pinout, TSM1014AID application, or TSM1014AID equivalent, this device supports precise constant-voltage and constant-current regulation in isolated AC/DC power supplies where low quiescent current, high mains rejection, and minimal external component count are critical.
Technical Context
The TSM1014AID integrates two transconductance operational amplifiers and a precision 1.25 V bandgap reference. One op-amp configures as a voltage controller via resistive divider feedback to CV−/CVOUT; the other implements current limiting using Vsense threshold derived from VRef and matched resistors at Cc+/Cc−.
Both amplifiers feature sink-only output stages tied to a common CCOUT/CVOUT node, enabling hardware ORing of voltage and current fault conditions. Compensation is fully accessible via external RC networks on each amplifier's output and inverting input, supporting stable loop design across wide load and line variations.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Voltage reference | 1.25 V ±0.5% (Tamb = 25 °C), enabling accurate 4.1 V output setting with <1% error over temperature and line |
| Total supply current | 100–180 µA at VCC = 18 V, minimizing auxiliary supply burden in energy-sensitive adapters |
| Supply voltage rejection | 65–100 dB over VCC = 4.5–28 V, ensuring stable regulation despite primary-side ripple and transient coupling |
| Input offset voltage | 0.5 mV max (Tamb = 25 °C), reducing CV/CC setpoint drift in precision charging applications |
| Output short-circuit current | 5–10 mA sink capability at CCOUT/CVOUT, sufficient to drive standard optocoupler LEDs under fault conditions |
| ESD protection | 2 kV HBM on all pins, supporting robust handling during manufacturing and board assembly |
| Operating temperature | −40 to +105 °C, qualifying for industrial-grade adapter and charger deployments |
Pinout & Package
Package: SO-8 (ECOPACK® compliant, 175 °C/W junction-to-ambient thermal resistance).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VRef | Analog output | Stable 1.25 V reference source for both CV and CC divider networks; drives external resistor bridges directly |
| Cc− | Analog input | Inverting input of current-control op-amp; connected to low-side sense resistor for accurate current threshold detection |
| Cc+ | Analog input | Non-inverting input of current-control op-amp; tied to VRef-derived threshold voltage for precise current limit setting |
| CV− | Analog input | Inverting input of voltage-control op-amp; connected to output voltage divider for closed-loop CV regulation |
| CVOUT | Analog output | Output of voltage-control op-amp; sinks current into optocoupler LED to adjust primary-side PWM duty cycle |
| GND | Power supply | 0 V reference for all analog signals and internal biasing; must be low-impedance connection to secondary ground plane |
| CCOUT | Analog output | Output of current-control op-amp; shares sink node with CVOUT to enable automatic ORing of voltage/current faults |
| VCC | Power supply | Single-supply rail (4.5–28 V); includes internal 28 V Zener clamp to protect against transformer winding overvoltage |
Key Features
| Feature | Design Value |
|---|---|
| Dual transconductance op-amps | Independent CV and CC control paths with fully accessible compensation nodes for stable loop tuning |
| Integrated 1.25 V reference | 0.5% initial accuracy and ≤30 mV deviation over −40 to +105 °C, eliminating need for external reference IC |
| Common-sink ORing output | CCOUT and CVOUT share single sinking node, guaranteeing immediate optocoupler activation if either voltage or current exceeds limit |
| Low 100 µA quiescent current | Enables use in no-load or standby modes without compromising adapter efficiency or no-load power targets |
| High mains voltage rejection | 100 dB SVR ensures regulation stability even with 100–240 VAC input variation and rectified ripple |
Applications
| Smartphone Fast Charging Adapter | Laptop AC Adapter |
|---|---|
Use Scenario: Secondary-side feedback in 20–65 W flyback converters delivering 5–20 V USB PD output with tight ±1% voltage and ±3% current tolerance. IC Role / Device Role / Timing Role: Dual-loop CV/CC controller providing real-time optocoupler drive signal based on sampled output voltage and current sense. Use Value: Enables single-chip secondary regulation without discrete op-amps or references, reducing BOM count by ≥4 components and PCB area by >15 mm². |
Use Scenario: Constant-voltage regulation with foldback current limiting in 65–90 W laptop adapters operating across universal AC input (90–264 VAC) and wide ambient temperature range. IC Role / Device Role / Timing Role: Voltage and current error amplifier coordinating with primary-side PWM controller via optocoupler to maintain output stability under dynamic load steps. Use Value: Achieves <100 mV output deviation during 0–100% load step due to 100 dB SVR and low 0.5 mV input offset voltage. |
| USB-C Power Bank Charger | Industrial Battery Maintenance Charger |
Use Scenario: Bidirectional CC/CV control in portable power bank AC/DC charging modules requiring compliance with USB BC1.2 and QC3.0 voltage negotiation. IC Role / Device Role / Timing Role: Precision reference and dual op-amp stage generating feedback signal for programmable primary controller during constant-current bulk charge phase. Use Value: Supports 0.5% reference accuracy and 7 µV/°C drift, enabling ±50 mV output voltage tolerance over −10 to +60 °C ambient. |
Use Scenario: Multi-stage lead-acid/NiMH battery charger with float voltage regulation and temperature-compensated current limiting in factory automation equipment. IC Role / Device Role / Timing Role: Analog front-end for voltage sensing and current monitoring, interfacing with microcontroller-based state machine via optocoupler-isolated feedback path. Use Value: Delivers 2 kV HBM ESD rating and −40 to +105 °C operation, ensuring reliability in electrically noisy industrial environments with frequent hot-plug events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar CV/CC controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TL431BIDBZR | Single shunt regulator only; lacks integrated current-control op-amp and dedicated CV/CC ORing output | Requires external op-amp and reference for full CV/CC function; higher BOM cost and layout complexity | Select when only voltage regulation is needed or when existing designs already include discrete current sensing circuitry |
| UCC3803D | Primary-side PWM controller with internal HV start-up; no secondary-side feedback capability or integrated reference | Designed for primary-controlled topologies; cannot replace TSM1014AID in optocoupler-coupled secondary regulation | Select for non-isolated or primary-sensing architectures where secondary-side isolation is not required |
Compared with TL431BIDBZR and UCC3803D, the TSM1014AID uniquely integrates both CV and CC control paths with shared sink output and precision reference in one SO-8 package-enabling compact, low-component-count secondary regulation unattainable with either alternative alone.
Availability
TSM1014AID is available at Aetrix Electronics and suitable for smartphone fast charging adapters, laptop AC adapters, and industrial battery maintenance chargers requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.
Supply support for TSM1014AID 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 silicon solutions for automotive, industrial, and power management applications.
The TSM1014AID belongs to ST's analog power management portfolio, specifically engineered for high-accuracy, low-power secondary-side regulation in isolated AC/DC converters targeting energy-efficient consumer and industrial power supplies.
FAQ
What is the maximum allowable VCC voltage for TSM1014AID?
The absolute maximum VCC rating is 28 V, enforced by an internal Zener clamp. Operation above this voltage-even briefly-can cause permanent damage. In flyback designs with transformer leakage spikes, external clamping (e.g., TVS diode) is recommended if VCC may exceed 26 V during transients.
Can TSM1014AID regulate both voltage and current simultaneously?
Yes-the device implements true simultaneous CV/CC regulation via two independent op-amps whose outputs are wired together (ORing). When either loop detects an overvoltage or overcurrent condition, the shared sink node pulls down the optocoupler LED, forcing the primary controller to reduce duty cycle immediately.
How does the 0.5% VRef accuracy impact output voltage tolerance?
With typical resistor divider tolerances (1%), the 0.5% VRef contributes ≤0.6% total output voltage error at 5 V output. At 20 V output (e.g., USB PD PPS), it contributes ≤0.15% error-making it suitable for applications demanding ±1% overall output regulation across temperature and line.
Is external compensation mandatory for stable operation?
Yes-both op-amps require external RC compensation networks connected between output and inverting input. The datasheet recommends 2.2 nF + 22 kΩ for each loop. Omitting compensation causes oscillation or slow response; values must be selected per actual loop gain and phase margin requirements.
TSM1014AID Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Active
- Reference Type:
- Series
- Output Type:
- Fixed
- Voltage - Output (Min/Fixed):
- 1.25V
- Voltage - Output (Max):
- -
- Current - Output:
- 2.5 mA
- Tolerance:
- ±0.5%
- Temperature Coefficient:
- -
- Noise - 0.1Hz to 10Hz:
- -
- Noise - 10Hz to 10kHz:
- -
- Voltage - Input:
- 4.5V ~ 28V
- Current - Supply:
- 50mA
- Current - Cathode:
- -
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
TSM1014AID FAQ
1.How can I place an order for TSM1014AID through Aetrix?
Please submit a Request for Quotation (RFQ) for TSM1014AID 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 TSM1014AID reliable?
The price and inventory of TSM1014AID are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TSM1014AID is usually 5 days.
3.What payment methods are accepted for TSM1014AID?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TSM1014AID transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TSM1014AID?
TSM1014AID orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TSM1014AID 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 TSM1014AID?
For technical support, including TSM1014AID datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TSM1014AID requirements.
6.How does Aetrix verify that TSM1014AID is sourced from the original manufacturer or authorized distributors?
All TSM1014AID 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 TSM1014AID meets industry standards.
7.What is the process for return or replacement of TSM1014AID?
All TSM1014AID units undergo pre-shipment inspection (PSI). If there is an issue with TSM1014AID, 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 TSM1014AID part is unused and in its original packaging.
Return procedure for TSM1014AID:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TSM1014AID Tags
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