SLUSEF1D September   2021  – November 2024 TPSM82864A , TPSM82866A

PRODMIX  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Device Options
  6. 5 Pin Configuration and Functions
  7. 6 Specifications
    1. 6.1 Absolute Maximum Ratings
    2. 6.2 ESD Ratings
    3. 6.3 Recommended Operating Conditions
    4. 6.4 Thermal Information
    5. 6.5 Electrical Characteristics
    6. 6.6 Typical Characteristics
  8. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 Power Save Mode
      2. 7.3.2 Forced PWM Mode
      3. 7.3.3 Optimized Transient Performance from PWM to PSM Operation
      4. 7.3.4 Low Dropout Operation (100% Duty Cycle)
      5. 7.3.5 Soft Start
      6. 7.3.6 Switch Current Limit and HICCUP Short-Circuit Protection
      7. 7.3.7 Undervoltage Lockout
      8. 7.3.8 Thermal Shutdown
    4. 7.4 Device Functional Modes
      1. 7.4.1 Enable and Disable (EN)
      2. 7.4.2 Output Discharge
      3. 7.4.3 Power Good (PG)
      4. 7.4.4 Output Voltage and Mode Selection (VSET/MODE)
  9. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Application
      1. 8.2.1 Design Requirements
      2. 8.2.2 Detailed Design Procedure
        1. 8.2.2.1 Setting The Output Voltage
        2. 8.2.2.2 Input and Output Capacitor Selection
      3. 8.2.3 Application Curves
    3. 8.3 Power Supply Recommendations
    4. 8.4 Layout
      1. 8.4.1 Layout Guidelines
      2. 8.4.2 Layout Examples
        1. 8.4.2.1 Thermal Considerations
  10. 9 Device and Documentation Support
    1. 9.1 Device Support
      1. 9.1.1 Third-Party Products Disclaimer
    2. 9.2 Documentation Support
      1. 9.2.1 Related Documentation
    3. 9.3 Receiving Notification of Documentation Updates
    4. 9.4 Support Resources
    5. 9.5 Trademarks
    6. 9.6 Electrostatic Discharge Caution
    7. 9.7 Glossary
  11. 10Revision History
  12. 11Mechanical, Packaging, and Orderable Information

8.2.3 Application Curves

VIN = 5.0 V, VOUT = 1.2 V, TA = 25°C, BOM = Table 8-2, unless otherwise noted. Solid lines show the FPWM mode and dashed lines show PSM.

TPSM82864A TPSM82866A Efficiency VIN = 5.0 V and TA = 25°C
TPSM8286xAA0PRCFPSM and FPWM
Figure 8-2 Efficiency VIN = 5.0 V and TA = 25°C
TPSM82864A TPSM82866A Efficiency VIN = 3.3 V and TA = 25°C
TPSM8286xAA0PRCFPSM and FPWM
Figure 8-4 Efficiency VIN = 3.3 V and TA = 25°C
TPSM82864A TPSM82866A Efficiency VIN = 2.8 V and TA = 25°C
TPSM8286xAA0PRCFPSM and FPWM
Figure 8-6 Efficiency VIN = 2.8 V and TA = 25°C
TPSM82864A TPSM82866A Efficiency VIN = 5.0 V and TA = 25°C
TPSM8286xAA0SRDJPSM and FPWM
Figure 8-8 Efficiency VIN = 5.0 V and TA = 25°C
TPSM82864A TPSM82866A Efficiency VIN = 3.3 V and TA = 25°C
TPSM8286xAA0SRDJPSM and FPWM
Figure 8-10 Efficiency VIN = 3.3 V and TA = 25°C
TPSM82864A TPSM82866A Efficiency VIN = 2.8 V and TA = 25°C
TPSM8286xAA0SRDJPSM and FPWM
Figure 8-12 Efficiency VIN = 2.8 V and TA = 25°C
TPSM82864A TPSM82866A Efficiency VIN = 5.0 V and TA = 25°C
TPSM8286xAA0HRDMPSM and FPWM
Figure 8-14 Efficiency VIN = 5.0 V and TA = 25°C
TPSM82864A TPSM82866A Efficiency VIN = 3.3 V and TA = 25°C
TPSM8286xAA0HRDMPSM and FPWM
Figure 8-16 Efficiency VIN = 3.3 V and TA = 25°C
TPSM82864A TPSM82866A Efficiency VIN = 2.8 V and TA = 25°C
TPSM8286xAA0HRDMPSM and FPWM
Figure 8-18 Efficiency VIN = 2.8 V and TA = 25°C
TPSM82864A TPSM82866A Load Regulation VIN = 5.0 V and PSM
TA = 25°C
Figure 8-20 Load Regulation VIN = 5.0 V and PSM
TPSM82864A TPSM82866A Load Regulation VIN = 3.3 V and PSM
TA = 25°C
Figure 8-22 Load Regulation VIN = 3.3 V and PSM
TPSM82864A TPSM82866A Load Regulation VIN = 2.8 V and PSM
TA = 25°C
Figure 8-24 Load Regulation VIN = 2.8 V and PSM
TPSM82864A TPSM82866A Switching Frequency VIN = 5.0 V
PSM and FPWMTA = 25°C
Figure 8-26 Switching Frequency VIN = 5.0 V
TPSM82864A TPSM82866A FPWM Operation IOUT = 3 A
VIN = 3.3 VVOUT = 1.2 VCOUT = 1 × 47uF
Figure 8-28 FPWM Operation IOUT = 3 A
TPSM82864A TPSM82866A FPWM Operation IOUT = 3 A
VIN = 3.3 VVOUT = 1.2 VCOUT = 3 × 22uF
Figure 8-30 FPWM Operation IOUT = 3 A
TPSM82864A TPSM82866A Load Transient FPWM IOUT = 0 A → 6 A
VIN = 5.0 VVOUT = 1.2 VCOUT = 2 × 22uF
Figure 8-32 Load Transient FPWM IOUT = 0 A → 6 A
TPSM82864A TPSM82866A Start-Up into Full Load
RVSET = 56.2 kΩIOUT = 6.0 A
Figure 8-34 Start-Up into Full Load
TPSM82864A TPSM82866A Load Sweep IOUT = 20 mA → 6 A
VIN = 5.0 VVOUT = 1.2 VCOUT = 2 × 22uF
Figure 8-36 Load Sweep IOUT = 20 mA → 6 A
TPSM82864A TPSM82866A Safe Operating Area VIN = 3.3-V TPSM82866AA0PRCFR
RθJA = 29.9°C/WTJmax = 125°C
Figure 8-38 Safe Operating Area VIN = 3.3-V TPSM82866AA0PRCFR
TPSM82864A TPSM82866A Safe Operating Area VIN = 3.3-V TPSM82866AA0SRDJR
RθJA = 25.4°C/WTJmax = 125°C
Figure 8-40 Safe Operating Area VIN = 3.3-V TPSM82866AA0SRDJR
TPSM82864A TPSM82866A Safe Operating Area VIN = 3.3-V TPSM82866AA0HRDMR
RθJA = 25.9°C/WTJmax = 125°C
Figure 8-42 Safe Operating Area VIN = 3.3-V TPSM82866AA0HRDMR
TPSM82864A TPSM82866A Efficiency VIN = 5.0 V and TA = 85°C
TPSM8286xAA0PRCFFPWM
Figure 8-3 Efficiency VIN = 5.0 V and TA = 85°C
TPSM82864A TPSM82866A Efficiency VIN = 3.3 V and TA = 85°C
TPSM8286xAA0PRCF

FPWM

Figure 8-5 Efficiency VIN = 3.3 V and TA = 85°C
TPSM82864A TPSM82866A Efficiency VIN = 2.8 V and TA = 85°C
TPSM8286xAA0PRCF

FPWM

Figure 8-7 Efficiency VIN = 2.8 V and TA = 85°C
TPSM82864A TPSM82866A Efficiency VIN = 5.0 V and TA = 85°C
TPSM8286xAA0SRDJFPWM
Figure 8-9 Efficiency VIN = 5.0 V and TA = 85°C
TPSM82864A TPSM82866A Efficiency VIN = 3.3 V and TA = 85°C
TPSM8286xAA0SRDJFPWM
Figure 8-11 Efficiency VIN = 3.3 V and TA = 85°C
TPSM82864A TPSM82866A Efficiency VIN = 2.8 V and TA = 85°C
TPSM8286xAA0SRDJ

FPWM

Figure 8-13 Efficiency VIN = 2.8 V and TA = 85°C
TPSM82864A TPSM82866A Efficiency VIN = 5.0 V and TA = 85°C
TPSM8286xAA0HRDMFPWM
Figure 8-15 Efficiency VIN = 5.0 V and TA = 85°C
TPSM82864A TPSM82866A Efficiency VIN = 3.3 V and TA = 85°C
TPSM8286xAA0HRDM

FPWM

Figure 8-17 Efficiency VIN = 3.3 V and TA = 85°C
TPSM82864A TPSM82866A Efficiency VIN = 2.8 V and TA = 85°C
TPSM8286xAA0HRDMFPWM
Figure 8-19 Efficiency VIN = 2.8 V and TA = 85°C
TPSM82864A TPSM82866A Load Regulation VIN = 5.0 V and FPWM
TA = 25°C
Figure 8-21 Load Regulation VIN = 5.0 V and FPWM
TPSM82864A TPSM82866A Load Regulation VIN = 3.3 V and FPWM
TA = 25°C
Figure 8-23 Load Regulation VIN = 3.3 V and FPWM
TPSM82864A TPSM82866A Load Regulation VIN = 2.8 V and FPWM
TA = 25°C
Figure 8-25 Load Regulation VIN = 2.8 V and FPWM
TPSM82864A TPSM82866A Switching Frequency VIN = 3.3 V
PSM and FPWMTA = 25°C
Figure 8-27 Switching Frequency VIN = 3.3 V
TPSM82864A TPSM82866A PSM Operation IOUT = 0.1 A
VIN = 5.0 VVOUT = 1.2 VCOUT = 1 × 47 uF
Figure 8-29 PSM Operation IOUT = 0.1 A
TPSM82864A TPSM82866A FPWM Operation IOUT = 0.1 A
VIN = 3.3 VVOUT = 1.2 VCOUT = 3 × 22uF
Figure 8-31 FPWM Operation IOUT = 0.1 A
TPSM82864A TPSM82866A Load Transient PSM IOUT = 0 A → 6 A
VIN = 5.0 VVOUT = 1.2 VCOUT = 2 × 22uF
Figure 8-33 Load Transient PSM IOUT = 0 A → 6 A
TPSM82864A TPSM82866A Start-Up with No Load
RVSET = 56.2 kΩIOUT = 0 A
Figure 8-35 Start-Up with No Load
TPSM82864A TPSM82866A HICCUP Short-Circuit Protection
RLOAD = 100 mΩ (during overload)
Figure 8-37 HICCUP Short-Circuit Protection
TPSM82864A TPSM82866A Safe Operating Area VIN = 5.0-V TPSM82866AA0PRCFR
RθJA = 29.9°C/WTJmax = 125°C
Figure 8-39 Safe Operating Area VIN = 5.0-V TPSM82866AA0PRCFR
TPSM82864A TPSM82866A Safe Operating Area VIN = 5.0-V TPSM82866AA0SRDJR
RθJA = 25.4°C/WTJmax = 125°C
Figure 8-41 Safe Operating Area VIN = 5.0-V TPSM82866AA0SRDJR
TPSM82864A TPSM82866A Safe Operating Area VIN = 5.0-V TPSM82866AA0HRDMR
RθJA = 25.9°C/WTJmax = 125°C
Figure 8-43 Safe Operating Area VIN = 5.0-V TPSM82866AA0HRDMR