SNVSBO7A July   2020  – July 2021 LM63610-Q1

PRODUCTION DATA  

  1. Features
  2. Applications
  3. Description
  4. Revision History
  5. Device Comparison Table
  6. Pin Configuration and Functions
  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 Timing Characteristics
    7. 7.7 Switching Characteristics
    8. 7.8 System Characteristics
    9. 7.9 Typical Characteristics
  8. Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1 Sync/Mode Selection
      2. 8.3.2 Output Voltage Selection
      3. 8.3.3 Switching Frequency Selection
        1. 8.3.3.1 Spread Spectrum Option
      4. 8.3.4 Enable and Start-up
      5. 8.3.5 RESET Flag Output
      6. 8.3.6 Undervoltage Lockout and Thermal Shutdown and Output Discharge
    4. 8.4 Device Functional Modes
      1. 8.4.1 Overview
      2. 8.4.2 Light Load Operation
        1. 8.4.2.1 Sync/FPWM Operation
      3. 8.4.3 Dropout Operation
      4. 8.4.4 Minimum On-time Operation
      5. 8.4.5 Current Limit and Short-Circuit Operation
  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 Choosing the Switching Frequency
        2. 9.2.2.2 Setting the Output Voltage
          1. 9.2.2.2.1 CFF Selection
        3. 9.2.2.3 Inductor Selection
        4. 9.2.2.4 Output Capacitor Selection
        5. 9.2.2.5 Input Capacitor Selection
        6. 9.2.2.6 CBOOT
        7. 9.2.2.7 VCC
        8. 9.2.2.8 External UVLO
        9. 9.2.2.9 Maximum Ambient Temperature
      3. 9.2.3 Application Curves
      4. 9.2.4 EMI Performance Curves
    3. 9.3 What to Do and What Not to Do
  10. 10Power Supply Recommendations
  11. 11Layout
    1. 11.1 Layout Guidelines
      1. 11.1.1 Ground and Thermal Considerations
    2. 11.2 Layout Example
  12. 12Device and Documentation Support
    1. 12.1 Documentation Support
      1. 12.1.1 Related Documentation
    2. 12.2 Receiving Notification of Documentation Updates
    3. 12.3 Support Resources
    4. 12.4 Trademarks
    5. 12.5 Electrostatic Discharge Caution
    6. 12.6 Glossary
  13. 13Mechanical, Packaging, and Orderable Information

Package Options

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

Electrical Characteristics

Limits apply over the junction temperature (TJ) range of –40°C to +150°C, unless otherwise stated. Minimum and maximum limits are specified through test, design or statistical correlation. Typical values represent the most likely parametric norm at TJ = 25°C, and are provided for reference purposes only. Unless otherwise stated, the following conditions apply: VIN = 13.5 V.(1)
PARAMETERTEST CONDITIONSMINTYPMAXUNIT
SUPPLY VOLTAGE (VIN PIN)
VINMinimum operating input voltage3.5V
IQNon-switching input current; measured at VIN pin(2)VEN = 3.3  VFB = 1.2x regulation point2340µA
ISDShutdown quiescent current; measured at VIN pinVEN = 0 5.310µA
VUVLO_RMinimum operating voltage thresholdRising VIN, IVCC = 03.5V
VUVLO_FMinimum operating voltage thresholdFalling VIN, IVCC = 02.63V
IPORPull down current on SW when OVP is triggeredVEN = 0  VSW = 5 V0.51.52.5mA
ENABLE (EN PIN)
VEN-VCCVCC enable voltageVEN rising0.85V
VEN-HPrecision enable high level for VOUTVEN rising1.4251.51.575V
VEN-LPrecision enable low level for VOUTVEN falling0.90.94V
ILKG-ENEnable input leakage currentVEN = 13.5 V–1000.2150nA
OUTPUT VOLTAGE SELECTION (VSEL PIN)
RSEL-ADJResistor range for valid adjustable output voltage selection at startup850
INTERNAL LDO
VCCInternal VCC voltage6 V ≤ VIN ≤ Max Operating VIN4.7555.25V
VCCMVCC Clamp Voltage1mA sourced into VCC5.255.555.8V
VOLTAGE REFERENCE (FB PIN)
VFB_ADJFeedback voltageVIN = 3.5-Max Operating VIN0.98511.015V
VFB_5VFeedback voltageVIN = 5.5-Max Operating VIN4.92555.075V
VFB_3p3VFeedback voltageVIN = 3.8-Max Operating VIN3.253.33.35V
IFB_ADJInput leakage current at FB PINFB = 1.0 V0.2100nA
IFB_5VInput leakage current at FB PINFB = 5.0 V2.893.4µA
IFB_3p3VInput leakage current at FB PINFB = 3.3V1.672µA
CURRENT LIMITS
ISCShort circuit high side current Limit1-A Version1.92.252.7A
ILS-LIMITLow side current limit1.51.82.12A
IPEAK-MINMinimum Peak Inductor Current0.3750.7A
IL-NEGNegative current limit–1.49–1.2–0.75A
VHICCUPHiccup threshold on FB pin37%42%47%
POWER GOOD ( RESET PIN)
VRESET-HIGHRESET upper threshold - Rising% of FB voltage110%112%115%
VRESET-LOWRESET lower threshold - Falling% of FB voltage91%93%95%
VRESET-HYSRESET hysteresis% of FB voltage,1.1%1.8%2.5%
VRESET_VALIDMinimum input voltage for proper PG functionMeasured when VRESET < 0.4 V with 10kOhm pullup to external 5-V0.71.041.25V
RRESETRESET ON resistance,VEN = 5.0 V, 1mA pull-up current60150Ω
RRESETRESET ON resistance,VEN = 0 V, 1mA pull-up current40125Ω
OSCILLATOR (SYNC/MODE PIN)
VSYNC-HIGHSync input and mode high level threshold1.51.8V
VSYNC-HYSSync input hysteresis0.355V
VSYNC-LOWSync input and mode low level threshold0.81.15V
RSYNCPulldown on MODE pin100kΩ
MOSFETS(2)
RDS-ON-HSHigh-side MOSFET on-resistanceLoad = 1 A93
RDS-ON-LSLow-side MOSFET on-resistanceLoad = 1 A61
VCBOOT-UVLOCboot - SW UVLO threshold(3)2.13V
MIN and MAX limits are 100% production tested at 25°C. Limits over the operating temperature range verified through correlation using Statistical Quality Control (SQC) methods. Limits are used to calculate Average Outgoing Quality Level (AOQL).
This is the current used by the device open loop. It does not represent the total input current of the system when in regulation.
When the voltage across the CBOOT capacitor falls below this voltage, the low side MOSFET is turn to recharge the boot capacitor