SLVSEG1A July   2018  – September 2019 TPS56637

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
    1.     Device Images
      1.      Simplified Schematic
      2.      Efficiency vs Output Current VOUT = 5 V
  4. 4 Revision History
  5. 5 Pin Configuration and Functions
    1.     Pin Functions
  6. 6 Specifications
    1. 6.1 Absolute Maximum Ratings
    2. 6.2 Handling Ratings
    3. 6.3 Recommended Operating Conditions
    4. 6.4 Thermal Information
    5. 6.5 Electrical Characteristics
    6. 6.6 Timing Requirements
    7. 6.7 Typical Characteristics
  7. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1  The Adaptive On-Time Control and PWM Operation
      2. 7.3.2  Mode Selection
        1. 7.3.2.1 Eco-mode™ Control Scheme
        2. 7.3.2.2 FCCM Control
      3. 7.3.3  Soft Start and Pre-Biased Soft Start
      4. 7.3.4  Enable and Adjusting Undervoltage Lockout
      5. 7.3.5  Output Overcurrent Limit and Undervoltage Protection
      6. 7.3.6  Overvoltage Protection
      7. 7.3.7  UVLO Protection
      8. 7.3.8  Thermal Shutdown
      9. 7.3.9  Output Voltage Discharge
      10. 7.3.10 Power Good
    4. 7.4 Device Functional Modes
      1. 7.4.1 Standby Operation
      2. 7.4.2 Normal Operation
      3. 7.4.3 Light Load Operation
  8. 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 Output Voltage Resistors Selection
        2. 8.2.2.2 Output Filter Selection
        3. 8.2.2.3 Input Capacitor Selection
        4. 8.2.2.4 Bootstrap Capacitor Selection
      3. 8.2.3 Application Curves
  9. 9 Power Supply Recommendations
  10. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Example
  11. 11Device and Documentation Support
    1. 11.1 Documentation Support
      1. 11.1.1 Related Documentation
    2. 11.2 Receiving Notification of Documentation Updates
    3. 11.3 Community Resources
    4. 11.4 Trademarks
    5. 11.5 Electrostatic Discharge Caution
    6. 11.6 Glossary
  12. 12Mechanical, Packaging, and Orderable Information
    1. 12.1 Package Option Addendum
      1. 12.1.1 Packaging Information
      2. 12.1.2 Tape and Reel Information

6.5 Electrical Characteristics

The electrical ratings specified in this section apply to all specifications in this document unless otherwise noted. These specifications are interpreted as conditions that will not degrade the parametric or functional specifications of the device for the life of the product containing it. Typical values correspond to TJ = 25°C, VIN = 12 V. Minimum and maximum limits are based on TJ = –40°C to +150°C, VIN = 4.5 V to 28 V(unless otherwise noted).
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
SUPPLY CURRENT
IQ Quiescent current, Operating at ULQ mode(1) 140 µA
ISD Shutdown supply current TJ=25°C, VEN=0 V 2 µA
UVLO
UVLO VIN Under-Voltage Lockout Wake up VIN voltage 4.0 4.2 4.4 V
Shut down VIN voltage 3.6 3.7 3.8 V
Hysteresis VIN voltage 500 mV
ENABLE(EN PIN)
IEN_INPUT Input current VEN = 1.1V 1 µA
IEN_HYS Hysteresis current VEN = 1.3V 4 µA
VEN(ON) Enable threshold EN rising 1.18 1.26 V
VEN(OFF) EN failling 1.04 1.12 V
FEEDBACK VOLTAGE
VFB Feedback voltage VOUT = 5V, continuous mode operation, TJ=25°C 0.594 0.6 0.606 V
VOUT = 5V, continuous mode operation, TJ=-40°C to 150°C 0.591 0.6 0.609 V
MOSFET
RDS(on)h High side switch resistance TJ = 25°C, VBST - VSW = 5 V 26 mΩ
RDS(on)l Low side switch resistance TJ = 25°C 12 mΩ
CURRENT LIMIT
IOCL Valley current limit 6.3 7.5 8.6 A
IOC_REV Reverse current limit for FCCM Mode 2.3 3 3.7 A
POWER GOOD
VPGTH PG lower threshold - falling % of VFB 85%
PG lower threshold - rising % of VFB 90%
PG upper threshold - falling % of VFB 110%
PG upper threshold - rising % of VFB 115%
IPGSINK PG sink current VFB = 0.5V, VPG = 0.5V 1.5 mA
IPGLK PG leakage current VPG = 5.5V -1 1 µA
FREQUENCY
FSW Switching frequency VOUT =5V, continuous mode operation 500 kHz
OUTPUT UNDERVOLTAGE AND OVERVOLTAGE PROTECTION
VOVP Output OVP threshold OVP detect(L>H) 125%
Hysteresis 5%
VUVP Output UVP threshold Hiccup detect(H>L) 65%
Hysteresis 5%
THERMAL SHUTDOWN
TSDN Thermal shutdown threshold(2) Temperature Rising 165 °C
Hysteresis 30 °C
SW DISCHARGE RESISTANCE
RDISCHG VOUT discharge resistance VEN=0, VSW=0.5V, TJ=25°C 200 Ω
(1) Not representative of the total input current of the system when in regulation. Ensured by design and characterization test.
(2) Not production tested. Ensured by design and engineering sample correlation.