SLVSH48C May   2024  – November 2025 TPS7H1121-SEP , TPS7H1121-SP

PRODMIX  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Device Comparison Table
  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 Quality Conformance Inspections
    7. 6.7 Typical Characteristics
  8. 7 Parameter Measurement Information
  9. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1  Adjustable Output Voltage (Feedback Circuit)
      2. 8.3.2  Enable
      3. 8.3.3  Dropout Voltage VDO
      4. 8.3.4  Output Voltage Accuracy
      5. 8.3.5  Output Noise
      6. 8.3.6  Power Supply Rejection Ratio (PSRR)
      7. 8.3.7  Soft Start
      8. 8.3.8  Power Good (PG)
      9. 8.3.9  Stability
        1. 8.3.9.1 Stability
        2. 8.3.9.2 STAB Pin
      10. 8.3.10 Programmable Current Limit
      11. 8.3.11 Thermal Shutdown
    4. 8.4 Device Functional Modes
      1. 8.4.1 Enable / Disable
  10. 9 Application and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Application
      1. 9.2.1 Design Requirements
      2. 9.2.2 Detailed Design Procedure
        1. 9.2.2.1 Output Voltage Configuration
        2. 9.2.2.2 Output Voltage Accuracy
        3. 9.2.2.3 Enable Threshold
        4. 9.2.2.4 Soft Start Capacitor
        5. 9.2.2.5 Programmable Current Limit Resistor
        6. 9.2.2.6 Characterization of Overcurrent Events That Exceed Thermal Limits
        7. 9.2.2.7 Power Good Pull Up Resistor
        8. 9.2.2.8 Capacitors
          1. 9.2.2.8.1 Hybrid Output Capacitor Network
        9. 9.2.2.9 Frequency Compensation
    3. 9.3 Power Supply Recommendations
    4. 9.4 Layout
      1. 9.4.1 Layout Guidelines
      2. 9.4.2 Layout Example
  11. 10Device and Documentation Support
    1. 10.1 Device Support
      1. 10.1.1 Third-Party Products Disclaimer
    2. 10.2 Documentation Support
      1. 10.2.1 Related Documentation
    3. 10.3 Receiving Notification of Documentation Updates
    4. 10.4 Support Resources
    5. 10.5 Trademarks
    6. 10.6 Electrostatic Discharge Caution
    7. 10.7 Glossary
  12. 11Revision History
  13. 12Mechanical, Packaging, and Orderable Information

6.7 Typical Characteristics

VIN = 5V, VOUT = 3.3V, TA = 25ºC and CSS = 5.6nF, COUT= 47μF (TBME476K025LBLC0), when used, the external compensation network is applied as depicted in Section 8.2, no RCOMP, no CComp unless otherwise noted.

TPS7H1121-SP TPS7H1121-SEP Dropout Voltage vs CurrentFigure 6-1 Dropout Voltage vs Current
TPS7H1121-SP TPS7H1121-SEP Dropout Voltage vs Temperature
ILoad = 1500mA
Figure 6-3 Dropout Voltage vs Temperature
TPS7H1121-SP TPS7H1121-SEP Dropout Voltage vs Temperature
ILoad = 500mA
Figure 6-5 Dropout Voltage vs Temperature
TPS7H1121-SP TPS7H1121-SEP Quiescent Current vs TemperatureFigure 6-7 Quiescent Current vs Temperature
TPS7H1121-SP TPS7H1121-SEP Shutdown Current vs TemperatureFigure 6-9 Shutdown Current vs Temperature
TPS7H1121-SP TPS7H1121-SEP Power Good Pin Leakage Current vs TemperatureFigure 6-11 Power Good Pin Leakage Current vs Temperature
TPS7H1121-SP TPS7H1121-SEP PG Pin Output Low vs TemperatureFigure 6-13 PG Pin Output Low vs Temperature
TPS7H1121-SP TPS7H1121-SEP Gain and Phase Margin vs Frequency (Bode Plot)
COUT1 = 47μF COUT2 = 1μF COUT3 = 0.1μF
GM2A = 17dB GM10mA = 32dB
PM2A = 58º PM10mA = 100º
Figure 6-15 Gain and Phase Margin vs Frequency (Bode Plot)
TPS7H1121-SP TPS7H1121-SEP Gain and Phase Margin vs Frequency (Bode Plot)
COUT = 47μF If compensation used:
GM1A = 24dB GMCOMP = 25dB RCOMP = 20kΩ
PM1A= 60º PMCOMP= 101º CCOMP = 1nF
Figure 6-17 Gain and Phase Margin vs Frequency (Bode Plot)
TPS7H1121-SP TPS7H1121-SEP Output Noise vs Frequency Across Current (Noise Spectral Density)
CCOMP = 1nF RCOMP = 20kΩ
Figure 6-19 Output Noise vs Frequency Across Current (Noise Spectral Density)
TPS7H1121-SP TPS7H1121-SEP PSRR vs Frequency Across CurrentFigure 6-21 PSRR vs Frequency Across Current
TPS7H1121-SP TPS7H1121-SEP Load Step: 0A to 2A with VIN = 5V
Slew Rate = 1A/μs
Figure 6-23 Load Step: 0A to 2A with VIN = 5V
TPS7H1121-SP TPS7H1121-SEP Line Step: 3.3V to 5V With IOUT = 1.8A
Slew Rate = 10V/ms
Figure 6-25 Line Step: 3.3V to 5V With IOUT = 1.8A
TPS7H1121-SP TPS7H1121-SEP Line Step: 3.3V to 5V AC Coupled
Slew Rate = 10V/ms
Figure 6-27 Line Step: 3.3V to 5V AC Coupled
TPS7H1121-SP TPS7H1121-SEP Dropout Voltage vs Temperature
ILoad = 2000mA
Figure 6-2 Dropout Voltage vs Temperature
TPS7H1121-SP TPS7H1121-SEP Dropout Voltage vs Temperature
ILoad = 1000mA
Figure 6-4 Dropout Voltage vs Temperature
TPS7H1121-SP TPS7H1121-SEP Dropout Voltage vs Temperature
ILoad = 250mA
Figure 6-6 Dropout Voltage vs Temperature
TPS7H1121-SP TPS7H1121-SEP Ground Current vs TemperatureFigure 6-8 Ground Current vs Temperature
TPS7H1121-SP TPS7H1121-SEP Feedback Pin Leakage Current vs TemperatureFigure 6-10 Feedback Pin Leakage Current vs Temperature
TPS7H1121-SP TPS7H1121-SEP Enable Pin Leakage Current vs TemperatureFigure 6-12 Enable Pin Leakage Current vs Temperature
TPS7H1121-SP TPS7H1121-SEP Soft Start Current vs TemperatureFigure 6-14 Soft Start Current vs Temperature
TPS7H1121-SP TPS7H1121-SEP Gain and Phase Margin vs Frequency (Bode Plot)
COUT1 = 47μF COUT2 = 1μF COUT3 = 0.1μF
GM2A = 17dB
PM2A = 58º
Figure 6-16 Gain and Phase Margin vs Frequency (Bode Plot)
TPS7H1121-SP TPS7H1121-SEP Output Noise vs Frequency Across Current (Noise Spectral Density)Figure 6-18 Output Noise vs Frequency Across Current (Noise Spectral Density)
TPS7H1121-SP TPS7H1121-SEP Output Noise vs Frequency, External Compensation Comparison (Noise Spectral Density)
If compensation used:
CCOMP = 1nF RCOMP = 20kΩ
Figure 6-20 Output Noise vs Frequency, External Compensation Comparison (Noise Spectral Density)
TPS7H1121-SP TPS7H1121-SEP PSRR vs Frequency, External Compensation Comparison
If compensation used:
CCOMP = 1nF RCOMP = 20kΩ
Figure 6-22 PSRR vs Frequency, External Compensation Comparison
TPS7H1121-SP TPS7H1121-SEP Load Step 2A to 0A with VOUT = 5V
Slew Rate = 1A/μs
Figure 6-24 Load Step 2A to 0A with VOUT = 5V
TPS7H1121-SP TPS7H1121-SEP Line Step: 5V to 3.3V With IOUT = 1.8A
Slew Rate = 10V/ms
Figure 6-26 Line Step: 5V to 3.3V With IOUT = 1.8A
TPS7H1121-SP TPS7H1121-SEP Line Step: 5V to 3.3V AC Coupled
Slew Rate = 10V/ms
Figure 6-28 Line Step: 5V to 3.3V AC Coupled