SLOS437R April   2004  – April 2024 TL103W , TL103WA , TL103WB

PRODUCTION DATA  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Pin Configuration and Functions
  6. 5 Specifications
    1. 5.1 Absolute Maximum Ratings
    2. 5.2 ESD Ratings
    3. 5.3 Recommended Operating Conditions
    4. 5.4 Thermal Information
    5. 5.5 Electrical Characteristics: OP AMP1 (VREF at Noninverting input)
    6. 5.6 Electrical Characteristics: OP AMP2 (Independent Amplifier)
    7. 5.7 Typical Characteristics: TL103WB
  7. 6 Detailed Description
    1. 6.1 Overview
    2. 6.2 Functional Block Diagram
    3. 6.3 Feature Description
      1. 6.3.1 Internal Reference
      2. 6.3.2 Input Common Mode Range
      3. 6.3.3 EMI Rejection
    4. 6.4 Device Functional Modes
  8. 7 Application and Implementation
    1. 7.1 Application Information
    2. 7.2 Typical Applications
      1. 7.2.1 Isolated Flyback CC/CV Feedback
        1. 7.2.1.1 Design Requirements
        2. 7.2.1.2 Detailed Design Procedure
          1. 7.2.1.2.1 Constant Current Circuit
          2. 7.2.1.2.2 Constant Voltage Circuit
      2. 7.2.2 Constant Current Sink
    3. 7.3 Power Supply Recommendations
    4. 7.4 Layout
      1. 7.4.1 Layout Guidelines
      2. 7.4.2 Layout Example
  9. 8 Device and Documentation Support
    1. 8.1 Documentation Support
      1. 8.1.1 Related Documentation
    2. 8.2 Receiving Notification of Documentation Updates
    3. 8.3 Support Resources
    4. 8.4 Trademarks
    5. 8.5 Electrostatic Discharge Caution
    6. 8.6 Glossary
  10. 9 Revision History
  11. 10Mechanical, Packaging, and Orderable Information

Package Options

Refer to the PDF data sheet for device specific package drawings

Mechanical Data (Package|Pins)
  • D|8
Thermal pad, mechanical data (Package|Pins)
Orderable Information

6.3.1 Internal Reference

The TL103Wx family features an internal shunt reference, tied to the non-inverting pin of one of the devices amplifiers. When supplied with enough voltage headroom (≥ 2.5V) and cathode current (0.5mA typical), the reference of the TL103Wx is forced to a fixed 2.5V. To not exceed the maximum cathode current, be sure that the reference input is current limited. Unlike many linear regulators, the reference of the TL103W is internally compensated to be stable without an output capacitor between the cathode and anode. If the reference is used to supply a load, stability criteria shown in Figure 5-22 needs to be met.

Reference voltage tolerance varies based off the device grade chosen. At 25°C the TL103W features a reference tolerance of 0.72%, while the TL103WA/TL103WB both feature reference tolerances of 0.44%.