SLLS654E April   2005  – November 2025 MC33063A-Q1

PRODUCTION DATA  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Pin Configuration and Functions
    1.     Pin 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 Oscillator Characteristics
    6. 5.6 Output Switch Characteristics
    7. 5.7 Comparator Characteristics
    8. 5.8 Total Device Characteristics
    9. 5.9 Typical Characteristics
  7. 6 Detailed Description
    1. 6.1 Overview
    2. 6.2 Functional Block Diagram
    3. 6.3 Feature Description
      1. 6.3.1 Reference Voltage
      2. 6.3.2 Current Limit
      3. 6.3.3 Current Limit of Typical Operation Waveforms
    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 Step-Up Converter
        1. 7.2.1.1 Design Requirements
        2. 7.2.1.2 Detailed Design Procedure
        3. 7.2.1.3 Application Curve
      2. 7.2.2 Step-Down Converter
        1. 7.2.2.1 Design Requirements
        2. 7.2.2.2 Detailed Design Procedure
        3. 7.2.2.3 Application Curves
      3. 7.2.3 Voltage Inverter Converter
        1. 7.2.3.1 Design Requirements
        2. 7.2.3.2 Detailed Design Procedure
        3. 7.2.3.3 Application Curves
      4. 7.2.4 12V Battery Based Automotive Supply
        1. 7.2.4.1 Design Requirements
        2. 7.2.4.2 Detailed Design Procedure
        3. 7.2.4.3 Application Curve
  9. 8 Power Supply Recommendations
  10. 9 Layout
    1. 9.1 Layout Guidelines
    2. 9.2 Layout Example
  11. 10Device and Documentation Support
    1. 10.1 Trademarks
    2. 10.2 Electrostatic Discharge Caution
    3. 10.3 Glossary
  12. 11Revision History
  13. 12Mechanical, Packaging, and Orderable Information

5.6 Output Switch Characteristics

VCC = 5V, TA = full operating range (unless otherwise noted). See Section 6.2.
PARAMETERTEST CONDITIONSTAMINTYPMAXUNIT
VCE(sat)Saturation voltage –
Darlington connection		ISW = 1A, pins 1 and 8 connectedFull range11.3V
VCE(sat)Saturation voltage –
non-Darlington connection(1)		ISW = 1A, RPIN8 = 82Ω to VCC,
Forced β ~ 20		Full range0.450.7V
hFEDC current gainISW = 1A, VCE = 5V25°C5075
IC(off)Collector off-state currentVCE = 40VFull range0.01100μA
(1) In the non-Darlington configuration, if the output switch is driven into hard saturation at low switch currents (≤300mA) and high driver currents (≥30mA), it may take up to 2μs for the switch to come out of saturation. This condition effectively shortens the off time at frequencies ≥30kHz, becoming magnified as temperature increases. The following output drive condition is recommended in the non-Darlington configuration:
Forced β of output switch = IC,SW / (IC,driver – 7mA) ≥ 10, where ∼7mA is required by the 100Ω resistor in the emitter of the driver to forward bias the Vbe of the switch.