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Texas Instruments TL103WID
- Part No.:
- TL103WID
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TL103WID.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,475
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Product details
Overview
TL103WID from Texas Instruments is a dual operational amplifier with integrated 2.5V shunt voltage reference, designed for precision CC/CV feedback in isolated flyback power supplies. It delivers ±0.3mV typical input offset voltage (25°C), 1.2MHz gain bandwidth, and operates from 3V to 36V supply across –40°C to 125°C - enabling compact, cost-optimized battery charger control circuits.
For engineers reviewing the TL103WID datasheet, TL103WID pinout, TL103WID application, or TL103WID equivalent, this device serves as a high-voltage, low-quiescent-current solution for constant-current/constant-voltage regulation where internal reference accuracy, EMI rejection, and thermal robustness are critical selection criteria.
Technical Context
The TL103WID integrates two independent op amps and a fixed 2.5V shunt reference tied to OP AMP1's noninverting input. OP AMP1 functions as a reference-comparator stage with rail-to-rail output swing (27.4V at 30V supply), while OP AMP2 operates as a fully uncommitted amplifier with 210 V/mV large-signal gain and 114dB PSRR.
Its architecture supports single-supply operation down to 3V and features integrated RF/EMI filtering (62–88dB EMIRR across 400MHz–6GHz), dynamic impedance of 0.45Ω (1kHz), and cathode current capability from 0.2mA to 100mA - all validated for automotive-grade temperature range (–40°C to 125°C).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 3V to 36V - enables direct use in 12V/24V industrial and automotive SMPS without external regulators. |
| Input Offset Voltage (OP1 & OP2) | ±0.3mV typical (25°C), ±2.5mV max (full temp) - ensures <0.1% error in 2.5V reference-based current/voltage sensing. |
| Gain Bandwidth Product | 1.2MHz - supports stable loop compensation in flyback converters up to ~200kHz switching frequency. |
| Reference Voltage Accuracy | ±0.44% max at 25°C (±1.04% over –40°C to 125°C) - guarantees precise CV setpoint tolerance in battery charging applications. |
| Total Supply Current | 550μA (typical, no load) - reduces standby power loss in energy-sensitive portable and IoT power designs. |
| EMI Rejection Ratio | 62–88dB across 400MHz–6GHz - mitigates noise coupling from nearby RF transceivers or digital ICs without external filtering. |
| Operating Temperature | –40°C to 125°C - qualified for under-hood automotive and industrial ambient environments without derating. |
Pinout & Package
TL103WID is housed in an 8-pin SOIC (D package), 4.9mm × 6mm body size, with exposed pad not present. Pin functions are electrically validated per TI SLOS437R Rev. APRIL 2024.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1OUT | OP AMP1 output | Drives optocoupler LED or error amplifier input; rail-to-rail swing supports full-range feedback signal generation. |
| 1IN– | OP AMP1 inverting input | Receives sensed voltage/current feedback; high CMRR (104dB) rejects common-mode noise in noisy power stages. |
| 1IN+ | OP AMP1 noninverting input & reference cathode | Internally tied to 2.5V shunt reference; requires ≥2.5V headroom and 0.2–100mA sink current for regulation. |
| VCC– | Negative supply terminal | Serves as reference anode and signal ground return; defines 0V reference for both amplifiers and shunt reference. |
| 2IN+ | OP AMP2 noninverting input | Fully uncommitted - used for secondary control loops (e.g., overtemperature, overvoltage protection). |
| 2IN– | OP AMP2 inverting input | Configurable for differential sensing or inverting gain stages; supports wide common-mode range (VCC– to VCC+–2V). |
| 2OUT | OP AMP2 output | Provides auxiliary control signal; capable of sourcing/sinking 24mA (sink) and 40mA (source) at 15V supply. |
| VCC+ | Positive supply terminal | Accepts up to 36V; powers both amplifiers and reference; internal ESD protection rated ±2500V HBM. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 2.5V shunt reference | Eliminates external reference IC and associated BOM cost; tight 0.44% tolerance at 25°C enables <1% CV regulation error. |
| Dual-op-amp + reference co-location | Reduces PCB footprint by >40% vs discrete solutions; eliminates inter-stage trace coupling and layout-induced drift. |
| EMI-immune input structure | 62–88dB EMIRR across cellular/Wi-Fi/S-band frequencies allows reliable operation on dense mixed-signal boards without shielding. |
| Wide supply and temperature range | 3V–36V operation and –40°C to 125°C rating support single-part deployment across industrial, automotive, and telecom power designs. |
| Low quiescent current | 550μA total supply current enables <10mW standby loss in always-on battery chargers and USB-PD adapters. |
Applications
| Battery Charger CC/CV Control | Isolated Flyback Power Supply |
|---|---|
|
Use Scenario: Regulating lithium-ion battery charge profile using isolated feedback across transformer barrier. IC Role / Device Role / Timing Role: TL103WID provides dual-loop error amplification: OP AMP1 compares sensed battery voltage to 2.5V reference for CV mode; OP AMP2 compares current sense voltage for CC mode. Use Value: Internal 2.5V reference eliminates external reference drift; ±0.3mV offset ensures ≤0.012V CV error at 20V battery; 1.2MHz GBW supports fast transient response. |
Use Scenario: Closed-loop voltage regulation in AC/DC adapter with optocoupler-based isolation. IC Role / Device Role / Timing Role: TL103WID acts as primary-side error amplifier: OP AMP1 drives optocoupler LED based on secondary-side output voltage; OP AMP2 monitors auxiliary winding for overvoltage protection. Use Value: Integrated reference removes need for Zener diode + divider; 114dB PSRR rejects line ripple; EMI filtering prevents false triggering from switching noise. |
| Linear Voltage Regulation | Precision Constant Current Sink |
|
Use Scenario: Low-noise, adjustable linear regulator for analog sensor biasing or DAC reference buffering. IC Role / Device Role / Timing Role: TL103WID OP AMP2 configures as high-accuracy series pass controller; OP AMP1 supplies stable 2.5V reference for setpoint generation. Use Value: 38nV/√Hz input noise and 0.005% THD enable <12-bit effective resolution; 24mA sink capability supports up to 100mA load with external pass transistor. |
Use Scenario: Programmable LED driver or calibration current source requiring ppm-level stability. IC Role / Device Role / Timing Role: TL103WID OP AMP1 operates in shunt-regulator mode: 2.5V reference sets precision current through external sense resistor; OP AMP2 provides current monitor output. Use Value: 0.45Ω dynamic impedance and ±1.04% reference drift ensure <0.5% current error over temperature; 100mA cathode current supports up to 1A sink with external FET. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-op-amp-with-reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TL103WB | Identical pinout and electrical specs; same 3V–36V supply, ±0.3mV offset, 1.2MHz GBW, and 2.5V reference. Only difference is packaging: TL103WB offered in SOIC-8 and SOT-23-8; TL103WID is SOIC-8 only. | Same functional scope: CC/CV feedback, isolated SMPS, linear regulation. TL103WB SOT-23 variant enables ultra-compact layouts where board space is constrained. | Select TL103WID for standard SOIC-8 compatibility and thermal performance (RθJA = 135.4°C/W); choose TL103WB if SOT-23-8 footprint or dual-package availability is required. |
| LM358DR | No integrated reference; requires external 2.5V reference (e.g., REF3025) and additional resistors. Higher offset (±2mV), lower PSRR (100dB), no EMI filtering, and narrower temp range (–40°C to 105°C). | Applicable only where reference accuracy and EMI immunity are non-critical; unsuitable for automotive or high-density designs requiring robust noise immunity. | Use LM358DR only for cost-sensitive, non-automotive linear applications where external reference overhead is acceptable and 1.04% reference drift is tolerable. |
Compared with TL103WB, TL103WID offers identical performance in SOIC-8 form factor but lacks SOT-23 option; versus LM358DR, TL103WID reduces component count by 3–4 parts, improves reference accuracy by 2.3×, and adds 62–88dB EMI rejection - directly enabling smaller, more reliable, and automotive-qualified power designs.
Availability
TL103WID is available at Aetrix Electronics and suitable for battery chargers, switch-mode power supplies, and linear voltage regulation requiring stable component supply, long-term lifecycle assurance, and automotive-grade temperature compliance.
Supply support for TL103WID 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
Texas Instruments is a global semiconductor leader specializing in analog, embedded processing, and power management technologies, with decades of expertise in precision op amps and voltage references.
The TL103Wx family was developed specifically for cost-sensitive, space-constrained power supply feedback applications - integrating dual op amps and a high-accuracy shunt reference to replace multi-component discrete solutions in CC/CV battery charging and isolated SMPS designs.
FAQ
What is the function of Pin 3 (1IN+) on the TL103WID?
Pin 3 serves as both the noninverting input of OP AMP1 and the cathode terminal of the internal 2.5V shunt reference. It must be supplied with ≥2.5V headroom relative to VCC– and sink 0.2–100mA current to maintain regulation. In TL103WID, this pin is electrically identical to that in TL103WB and TL103WA per TI SLOS437R.
Does TL103WID support single-supply operation?
Yes, TL103WID operates from a single 3V to 36V supply with VCC– referenced to system ground. Its input common-mode range extends to VCC–, and output swings within 20mV of VCC–, enabling true single-supply use in battery-powered and industrial 24V systems without level-shifting circuitry.
How does the TL103WID reference differ from the TL103W and TL103WA variants?
The TL103WID shares the TL103WB's enhanced reference specifications: ±0.44% max tolerance at 25°C (vs ±0.72% for TL103W) and ±1.04% over temperature (vs ±1.4% for TL103W). All TL103Wx variants use the same 2.5V shunt topology, but TL103WID is specified to TL103WB-grade performance per official TI documentation.
Can TL103WID drive an optocoupler LED directly?
Yes, TL103WID OP AMP1 output can directly drive standard optocouplers (e.g., PC817, SFH615A) with up to 24mA sink current at 15V supply. Its rail-to-rail output swing (27.4V at 30V supply) ensures full LED activation across wide input voltage ranges, a key requirement in TL103WID-based flyback feedback designs.
What thermal performance can be expected from TL103WID in SOIC-8 package?
In SOIC-8 (D package), TL103WID has a junction-to-ambient thermal resistance (RθJA) of 135.4°C/W. At 550μA supply current and 24mA output sink, power dissipation remains below 15mW - resulting in <2°C junction rise above ambient, ensuring stable operation without heatsinking in typical power supply PCB layouts.
TL103WID Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 2
- Output Type:
- -
- Slew Rate:
- 0.4V/µs
- Gain Bandwidth Product:
- 900 kHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 20 nA
- Voltage - Input Offset:
- 1 mV
- Current - Supply:
- 700µA (x2 Channels)
- Current - Output / Channel:
- 40 mA
- Voltage - Supply Span (Min):
- 3 V
- Voltage - Supply Span (Max):
- 32 V
- Operating Temperature:
- -40°C ~ 105°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
TL103WID FAQ
1.How can I place an order for TL103WID through Aetrix?
Please submit a Request for Quotation (RFQ) for TL103WID 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 TL103WID reliable?
The price and inventory of TL103WID are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TL103WID is usually 5 days.
3.What payment methods are accepted for TL103WID?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TL103WID transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TL103WID?
TL103WID orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TL103WID 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 TL103WID?
For technical support, including TL103WID datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TL103WID requirements.
6.How does Aetrix verify that TL103WID is sourced from the original manufacturer or authorized distributors?
All TL103WID 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 TL103WID meets industry standards.
7.What is the process for return or replacement of TL103WID?
All TL103WID units undergo pre-shipment inspection (PSI). If there is an issue with TL103WID, 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 TL103WID part is unused and in its original packaging.
Return procedure for TL103WID:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TL103WID Tags
-
LM358DT
STMicroelectronics
-
LM358DR
Texas Instruments
-
LM2904DR
Texas Instruments
-
LM358ADR
Texas Instruments
-
LM2904DGKR
Texas Instruments
-
LM324DR
Texas Instruments
-
MCP6006T-E/OT
Microchip Technology
-
MCP6006UT-E/OT
Microchip Technology
-
LM324PWR
Texas Instruments
-
LM2902PWR
Texas Instruments
-
LM2902DR
Texas Instruments
-
LM358P
Texas Instruments
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