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

Package Options

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

6.5 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_VIN Quiescent current into VIN pin EN = High, no load, device not switching 4 10 µA
IQ_VOS Quiescent current into VOS pin EN = High, no load, device not switching, VVOS = 1.8 V 8 µA
ISD Shutdown current EN = Low, TJ = －40℃ to 85℃
 0.24 1 µA
VUVLO Undervoltage lockout threshold VIN rising 2.2 2.3 2.4 V
VIN falling 2.1 2.2 2.3 V
TJSD Thermal shutdown threshold TJ rising 150 °C
Thermal shutdown hysteresis TJ falling 20 °C
LOGIC INTERFACE
VIH High-level input threshold voltage at EN and VSET/MODE 1.0 V
VIL Low-level input threshold voltage at EN and VSET/MODE 0.4 V
IEN,LKG Input leakage current into EN pin 0.01 0.1 µA
START-UP, POWER GOOD
tDelay Enable delay time Time from EN high to device starts switching with a 249-kΩ resistor connected between VSET/MODE and GND 420 650 1100 µs
tRamp Output voltage ramp time Time from device starts switching to power good 0.8 1 1.5 ms
VPG(low) Power-good lower threshold VFB referenced to VFB(nominal) 85 91 96 %
VPG(high) Power-good upper threshold VFB referenced to VFB(nominal) 103 111 120 %
VPG,OL Low-level output voltage Isink = 1 mA 0.4 V
IPG,LKG Input leakage current into PG pin VPG = 5.0 V 0.01 0.1 µA
tPG,DLY Power good delay Rising and falling edges 34 µs
OUTPUT
VOUT Output voltage accuracy Fixed voltage operation, FPWM, no load, TJ = 0°C to 85°C –1 1 %
Fixed voltage operation, FPWM, no load –2 2 %
VFB Feedback voltage Adjustable voltage operation 594 600 606 mV
IFB,LKG Input leakage into FB pin Adjustable voltage operation, VFB = 0.6 V 0.01 0.4 µA
RDIS Output discharge resistor at VOS pin 3.5 Ω
Load regulation VOUT = 1.2 V, FPWM  0.04 %/A
POWER SWITCH
RDP
Dropout resistance

 TPSM8286xAA0SRDJ
100% mode. VIN = 3.3 V, TJ = 25°C		 28 35 mΩ
TPSM8286xAA0PRCF
100% mode. VIN = 3.3 V, TJ = 25°C		 26 mΩ
TPSM8286xAA0HRDM
100% mode. VIN = 3.3 V, TJ = 25°C		 26 mΩ
ILIM High-side FET forward current limit TPSM82864A 5 5.5 6 A
TPSM82866A 7 7.9 9 A
Low-side FET forward current limit TPSM82864A 4.5 A
TPSM82866A 6.5 A
Low-side FET negative current limit –3 A
fSW PWM switching frequency TPSM82866Ax, IOUT = 1 A, VOUT = 1.2 V 2.4 MHz