SLVSEP0F August   2019  – November 2021 TPSM82821 , TPSM82821A , TPSM82822 , TPSM82822A , TPSM82823 , TPSM82823A

PRODUCTION DATA  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Revision History
  5. 5 Device Comparison Table
  6. 6 Pin Configuration and Functions
  7. 7 Specifications
    1. 7.1 Absolute Maximum Ratings
    2. 7.2 ESD Ratings
    3. 7.3 Recommended Operating Conditions
    4. 7.4 Thermal Information
    5. 7.5 Electrical Characteristics
    6. 7.6 Typical Characteristics
  8. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1 PWM and PSM Operation
      2. 8.3.2 Low Dropout Operation (100% Duty Cycle)
      3. 8.3.3 Soft Start-up
      4. 8.3.4 Switch Current Limit and Hiccup Short Circuit Protection
      5. 8.3.5 Undervoltage Lockout
      6. 8.3.6 Thermal Shutdown
    4. 8.4 Device Functional Modes
      1. 8.4.1 Enable and Disable
      2. 8.4.2 Output Discharge
      3. 8.4.3 Power Good Output
  9. 9 Application and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Applications
      1. 9.2.1 1.8-V Output Application
        1. 9.2.1.1 Design Requirements
        2. 9.2.1.2 Detailed Design Procedure
          1. 9.2.1.2.1 Setting the Output Voltage
          2. 9.2.1.2.2 Feedforward capacitor
          3. 9.2.1.2.3 Input and Output Capacitor Selection
        3. 9.2.1.3 Application Performance Curves
          1. 9.2.1.3.1 TPSM82821 Performance Curves
          2. 9.2.1.3.2 TPSM82821A Performance Curves
          3. 9.2.1.3.3 TPSM82822 Performance Curves
          4. 9.2.1.3.4 TPSM82822A Performance Curves
          5. 9.2.1.3.5 TPSM82823 Performance Curves
          6. 9.2.1.3.6 TPSM82823A Performance Curves
  10. 10Power Supply Recommendations
  11. 11Layout
    1. 11.1 Layout Guidelines
    2. 11.2 Layout Example
      1. 11.2.1 Thermal Consideration
  12. 12Device and Documentation Support
    1. 12.1 Device Support
      1. 12.1.1 Third-Party Products Disclaimer
      2. 12.1.2 Development Support
        1. 12.1.2.1 Models and Simulators
    2. 12.2 Documentation Support
      1. 12.2.1 Related Documentation
    3. 12.3 Receiving Notification of Documentation Updates
    4. 12.4 Trademarks
    5. 12.5 Electrostatic Discharge Caution
    6. 12.6 Glossary

Package Options

Refer to the PDF data sheet for device specific package drawings

Mechanical Data (Package|Pins)
  • SIL|10
Thermal pad, mechanical data (Package|Pins)
Orderable Information

7.5 Electrical Characteristics

TJ = –40°C to 125°C and VIN = 2.4 V to 5.5 V. Typical values are at TJ = 25°C and VIN = 5 V, unless otherwise noted.
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
SUPPLY
IQ Quiescent current into the VIN EN = High, no load, device not switching 4 10 µA
ISD Shutdown current into the VIN EN = Low, TJ = –40°C to 85°C 0.05 0.5 µA
IQ Quiescent current EN = High, no load, device switching, FPWM devices 8 mA
VUVLO Undervoltage lockout threshold VIN falling 2.1 2.2 2.3 V
Undervoltage lockout hysteresis VIN rising 160 mV
TJSD Thermal shutdown threshold TJ rising 150 °C
Thermal shutdown hysteresis TJ falling 20 °C
LOGIC INTERFACE EN
VIH High-level input voltage 1.0 V
VIL Low-level input voltage 0.4 V
Ilkg(EN) Input leakage current into EN pin EN = High 0.01 0.1 µA
SOFT START, POWER GOOD
tSS Soft-start time Time from EN high to 95% of VOUT nominal 1.25 ms
VPGTH Power-good lower threshold VPG rising, VFB referenced to VFB nominal 94% 96% 98%
VPG falling, VFB referenced to VFB nominal 90% 92% 94%
Power-good upper threshold VPG falling, VFB referenced to VFB nominal 103% 105% 107%
VPG rising, VFB referenced to VFB nominal 108% 110% 112%
VPG,OL Low-level output voltage Isink = 1 mA 0.4 V
Ilkg(PG) Input leakage current into PG pin VPG = 5 V 0.01 0.1 µA
OUTPUT
VOUT Output voltage accuracy TPSM828211, TPSM828221, PWM mode 1.188 1.2 1.212 V
TPSM828212, TPSM828222, PWM mode 1.782 1.8 1.818
TPSM828213, TPSM828223, PWM mode 2.475 2.5 2.525
TPSM828214, TPSM828224, PWM mode 3.267 3.3 3.333
VFB Feedback regulation voltage PWM mode 594 600 606 mV
Ilkg(FB) Feedback input leakage current VFB = 0.6 V 0.01 0.05 µA
IDIS Output discharge current EN = Low, VSW = 0.4 V 75 400 mA
POWER SWITCH
RDS(on) High-side FET on-resistance 26 mΩ
Low-side FET on-resistance 26 mΩ

RDP
 		 Dropout resistance TPSM82821, TPSM82821A, 100% mode. VIN = 2.7 V, TJ = 25°C 115 145 mΩ
TPSM82822, TPSM82822A, 100% mode. VIN = 2.7 V, TJ = 25°C 90 120
TPSM82823, TPSM82823A, 100% mode. VIN = 2.7 V, TJ = 25°C 70 95
ILIMF High-side FET switch current limit TPSM82821A  1.7 2.1 2.4 A
ILIMF High-side FET switch current limit TPSM82821 1.75 2.2 2.75 A
TPSM82822, TPSM82822A 2.7 3.3 3.9
TPSM82823, TPSM82823A 3.7 4.3 5.0
ILIM Low-side FET negative current limit, DC TPSM82821A/TPSM82822A/TPSM82823A  –1.6 A
fSW PWM switching frequency IOUT = 1 A 4 MHz