SLVSEI1C June   2019  – October 2020 TPS62864 , TPS62866

PRODUCTION DATA  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Revision History
  5. 5 Device Options
  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 I2C InterfaceTiming Characteristics
    7. 7.7 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 Power Save Mode
      2. 8.3.2 Forced PWM Mode
      3. 8.3.3 Start-up
      4. 8.3.4 Switch Current Limit and HICCUP Short-Circuit Protection
      5. 8.3.5 Undervoltage Lockout (UVLO)
      6. 8.3.6 Thermal Warning and Shutdown
    4. 8.4 Device Functional Modes
      1. 8.4.1 Enable and Disable (EN)
      2. 8.4.2 Output Discharge
      3. 8.4.3 Start-up Output Voltage and I2C Slave Address Selection (VSET)
      4. 8.4.4 Select Output Voltage Registers (VID)
      5. 8.4.5 Power Good (PG)
    5. 8.5 Programming
      1. 8.5.1 Serial Interface Description
      2. 8.5.2 Standard-, Fast-, and Fast-Mode Plus Protocol
      3. 8.5.3 HS-Mode Protocol
      4. 8.5.4 I2C Update Sequence
      5. 8.5.5 I2C Register Reset
    6. 8.6 Register Map
      1. 8.6.1 Slave Address Byte
      2. 8.6.2 Register Address Byte
      3. 8.6.3 VOUT Register 1
      4. 8.6.4 VOUT Register 2
      5. 8.6.5 CONTROL Register
      6. 8.6.6 STATUS Register
  9. 9 Application and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Applications
      1. 9.2.1 6-A Output Current Application
        1. 9.2.1.1 Design Requirements
        2. 9.2.1.2 Detailed Design Procedure
          1. 9.2.1.2.1 Custom Design With WEBENCH® Tools
          2. 9.2.1.2.2 Setting The Output Voltage
          3. 9.2.1.2.3 Output Filter Design
          4. 9.2.1.2.4 Inductor Selection
          5. 9.2.1.2.5 Capacitor Selection
        3. 9.2.1.3 Application Curves
      2. 9.2.2 Smaller Application Solution
        1. 9.2.2.1 Design Requirements
        2. 9.2.2.2 Application Curves
  10. 10Power Supply Recommendations
  11. 11Layout
    1. 11.1 Layout Guidelines
    2. 11.2 Layout Example
    3. 11.3 Thermal Considerations
  12. 12Device and Documentation Support
    1. 12.1 Device Support
      1. 12.1.1 Third-Party Products Disclaimer
    2. 12.2 Documentation Support
      1. 12.2.1 Related Documentation
    3. 12.3 Support Resources
    4. 12.4 Receiving Notification of Documentation Updates
    5. 12.5 Trademarks
    6. 12.6 Electrostatic Discharge Caution
    7. 12.7 Glossary
  13. 13Mechanical, Packaging, and 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 EN = High, no load, device not switching 4 10 µA
ISD Shutdown current EN = Low, TJ = -40℃ to 85℃
 0.1 1 µA
VUVLO Under voltage lock out threshold VIN rising 2.2 2.3 2.4 V
VIN falling 2.1 2.2 2.3 V
TJW Thermal warning threshold TJ rising 130 °C
Thermal warning hysteresis TJ falling 20 °C
TJSD Thermal shutdown threshold TJ rising 150 °C
Thermal shutdown hysteresis TJ falling 20 °C
LOGIC INTERFACE EN, SDA, SCL
VIH High-level input threshold voltage at EN, SCL, SDA, VSET/VID 1.0 V
VIL Low-level input threshold voltage at EN, SCL, SDA, VSET/VID 0.4 V
ISCL,LKG Input leakage current into SCL pin 0.01 0.2 µA
ISDA,LKG Input leakage current into SDA pin 0.01 0.1 µA
IEN,LKG Input leakage current into EN pin 0.01 0.1 µA
CSCL Parasitic capacitance at SCL 1 pF
CSDA Parasitic capacitance at SCL 2.4 pF
STARTUP, POWER GOOD
tDelay Enable delay time Time from EN high to device starts switching, R1 = 249kΩ 420 700 1100 µs
tRamp Output voltage ramp time Time from device starts switching to power good 0.9 1 1.5 ms
VPG Power good lower threshold VVOS referenced to VOUT nominal  85 91 96 %
Power good upper threshold VVOS referenced to VOUT nominal  103 111 120 %
tPG,DLY Power good deglitch delay Rising and falling edges 34 µs
OUTPUT
VOUT Output voltage accuracy(1) VOUT ≥ 0.59 V, FPWM, no Load, TJ = 25℃ to 125℃ -1 1 %
VOUT < 0.59 V, FPWM, no Load, TJ = 25℃ to 125℃ -2 2 %
IVOS,LKG Input leakage current into VOS pin EN = High, VVOS = 1.8 V 18 µA
EN = Low, Output discharge disabled, VVOS = 1.8 V 0.2 2.5 µA
RDIS Output discharge resistor at VOS pin 15 Ω
Load regulation VOUT = 0.9 V, FPWM  0.04 %/A
POWER SWITCH
RDS(on) High-side FET on-resistance 7 mΩ
Low-side FET on-resistance 6.5 mΩ
ILIM High-side FET forward current limit TPS62864 5 5.5 6 A
TPS62866 7 7.7 8.5 A
Low-side FET forward current limit TPS62864 4.5 A
TPS62866 6.5 A
Low-side FET negative current limit TPS62864, TPS62866 -3 A
fSW PWM switching frequency IOUT = 1 A, VOUT = 0.9 V 2.4 MHz
(1) Exclude codes: 0x20 (560 mV), 0x40 (720 mV), 0x60 (880 mV), 0x80 (1040 mV), 0xC4 (1360 mV),  0xE0 (1520 mV).