SNVSA47C February   2016  – December 2020 LM5165

PRODUCTION DATA  

  1. Features
  2. Applications
  3. Description
  4. Revision History
  5. Pin Configuration and Functions
  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 Switching Characteristics
    7. 6.7 Typical Characteristics
  7. Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1  Integrated Power MOSFETs
      2. 7.3.2  Selectable PFM or COT Mode Converter Operation
      3. 7.3.3  COT Mode Light-Load Operation
      4. 7.3.4  Low Dropout Operation and 100% Duty Cycle Mode
      5. 7.3.5  Adjustable Output Voltage (FB)
      6. 7.3.6  Adjustable Current Limit
      7. 7.3.7  Precision Enable (EN) and Hysteresis (HYS)
      8. 7.3.8  Power Good (PGOOD)
      9. 7.3.9  Configurable Soft Start (SS)
      10. 7.3.10 Thermal Shutdown
    4. 7.4 Device Functional Modes
      1. 7.4.1 Shutdown Mode
      2. 7.4.2 Standby Mode
      3. 7.4.3 Active Mode in COT
      4. 7.4.4 Active Mode in PFM
      5. 7.4.5 Sleep Mode in PFM
  8. Applications and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Applications
      1. 8.2.1 Design 1: Wide VIN, Low IQ COT Converter Rated at 5 V, 150 mA
        1. 8.2.1.1 Design Requirements
        2. 8.2.1.2 Detailed Design Procedure
          1. 8.2.1.2.1 Custom Design With WEBENCH® Tools
          2. 8.2.1.2.2 Switching Frequency – RT
          3. 8.2.1.2.3 Filter Inductor – LF
          4. 8.2.1.2.4 Output Capacitors – COUT
          5. 8.2.1.2.5 Series Ripple Resistor – RESR
          6. 8.2.1.2.6 Input Capacitor – CIN
          7. 8.2.1.2.7 Soft-Start Capacitor – CSS
        3. 8.2.1.3 Application Curves
      2. 8.2.2 Design 2: Small Solution Size PFM Converter Rated at 3.3 V, 50 mA
        1. 8.2.2.1 Design Requirements
        2. 8.2.2.2 Detailed Design Procedure
          1. 8.2.2.2.1 Peak Current Limit Setting – RILIM
          2. 8.2.2.2.2 Switching Frequency – LF
          3. 8.2.2.2.3 Output Capacitor – COUT
          4. 8.2.2.2.4 Input Capacitor – CIN
        3. 8.2.2.3 Application Curves
      3. 8.2.3 Design 3: High Density 12-V, 75-mA PFM Converter
        1. 8.2.3.1 Design Requirements
        2. 8.2.3.2 Detailed Design Procedure
          1. 8.2.3.2.1 Peak Current Limit Setting – RILIM
          2. 8.2.3.2.2 Switching Frequency – LF
          3. 8.2.3.2.3 Input and Output Capacitors – CIN, COUT
          4. 8.2.3.2.4 Feedback Resistors – RFB1, RFB2
          5. 8.2.3.2.5 Undervoltage Lockout Setpoint – RUV1, RUV2, RHYS
          6. 8.2.3.2.6 Soft Start – CSS
        3. 8.2.3.3 Application Curves
      4. 8.2.4 Design 4: 3.3-V, 150-mA COT Converter With High Efficiency
        1. 8.2.4.1 Design Requirements
        2. 8.2.4.2 Application Curves
      5. 8.2.5 Design 5: 15-V, 150-mA, 600-kHz COT Converter
        1. 8.2.5.1 Design Requirements
        2. 8.2.5.2 Detailed Design Procedure
          1. 8.2.5.2.1 COT Output Ripple Voltage Reduction
        3. 8.2.5.3 Application Curves
  9. Power Supply Recommendations
  10. 10Layout
    1. 10.1 Layout Guidelines
      1. 10.1.1 Compact PCB Layout for EMI Reduction
      2. 10.1.2 Feedback Resistor Layout
    2. 10.2 Layout Example
  11. 11Device and Documentation Support
    1. 11.1 Device Support
      1. 11.1.1 Third-Party Products Disclaimer
      2. 11.1.2 Development Support
      3. 11.1.3 Custom Design With WEBENCH® Tools
    2. 11.2 Documentation Support
      1. 11.2.1 Related Documentation
    3. 11.3 Receiving Notification of Documentation Updates
    4. 11.4 Support Resources
    5. 11.5 Trademarks
    6. 11.6 Electrostatic Discharge Caution
    7. 11.7 Glossary
  12. 12Mechanical, Packaging, and Orderable Information

Package Options

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

Electrical Characteristics

Typical values correspond to TJ = 25°C. Minimum and maximum limits apply over the –40°C to +125°C junction temperature range. VIN = 12 V (unless otherwise noted).(1)(2)
PARAMETERTEST CONDITIONSMINTYPMAXUNIT
QUIESCENT CURRENTS
IQ-SHDVIN DC supply current, shutdownVEN = 0 V, TA = 25°C4.66µA
IQ-SLEEPVIN DC supply current, no loadVFB = 1.5 V, TA = 25°C10.515µA
IQ-SLEEP-VINMAXVIN DC supply current, no loadVFB = 1.5 V, VVIN = 65 V, TA = 25°C1115µA
IQ-ACTIVE-PFMVIN DC supply current, activePFM mode205µA
IQ-ACTIVE-COTVIN DC supply current, activeCOT mode, RRT = 107 kΩ300µA
POWER SWITCHES
RDSON1High-side MOSFET RDS(on)ISW = –10 mA2Ω
RDSON2Low-side MOSFET RDS(on)ISW = 10 mA1Ω
CURRENT LIMITING
ILIM1-VSONHigh-side peak current threshold
VSON-10 package
ILIM shorted to GND220240264mA
ILIM2-VSONRILIM = 24.9 kΩ155180205
ILIM3-VSONRILIM = 56.2 kΩ100120145
ILIM4-VSONRILIM ≥ 100 kΩ486075
REGULATION COMPARATOR
VVOUT50VOUT 5-V DC setpointLM5165X4.955.1V
VVOUT33VOUT 3.3-V DC setpointLM5165Y3.233.33.37V
IVOUTVOUT pin input currentVVOUT = 5 V, LM5165X6.7µA
VVOUT = 3.3 V, LM5165Y3.9
VREF1Lower FB regulation threshold (PFM, COT)Adjustable output version1.2051.2231.241V
VREF2Upper FB regulation threshold (PFM)1.221.2331.246
FBHYS-PFMFB comparator PFM hysteresisPFM mode10mV
FBHYS-COTFB comparator dropout hysteresisCOT mode4mV
IFBFB pin input bias currentVFB = 1 V100nA
FBLINE-REGFB threshold variation over lineVVIN = 3 V to 65 V0.001%/V
VOUTLINE-REGVOUT threshold variation over lineLM5165X, VVIN = 6 V to 65 V
LM5165Y, VVIN = 4.5 V to 65 V
0.001%/V
POWER GOOD
UVTRISINGPGOOD comparatorFB voltage rising, relative to VREF194%
UVTFALLINGFB voltage falling, relative to VREF187%
RPGOODPGOOD on-resistanceVFB = 1 V80200Ω
VINMIN-PGOODMinimum VIN for valid PGOODVVIN falling, IPGOOD = 0.1 mA, VPGOOD < 0.5 V1.21.65V
IPGOODPGOOD off-state leakage currentVFB = 1.2 V, VPGOOD = 5.5 V10100nA
ENABLE / UVLO
VIN-ONTurnon thresholdVIN voltage rising2.62.752.95V
VIN-OFFTurnoff thresholdVIN voltage falling2.352.452.6V
VEN-ONEnable turnon thresholdEN voltage rising1.1631.2121.262V
VEN-OFFEnable turnoff thresholdEN voltage falling1.1091.1441.178V
VEN-HYSEnable hysteresis68mV
VEN-SDEN shutdown thresholdEN voltage falling0.30.6V
RHYSHYS on-resistanceVEN = 1 V80200Ω
IHYSHYS off-state leakage currentVEN = 1.5 V, VHYS = 5.5 V10100nA
SOFT-START
ISSSoft-start charging currentVSS = 1 V10µA
TSS-INTSoft-start rise timeSS floating900µs
THERMAL SHUTDOWN
TJ-SDThermal shutdown threshold170°C
TJ-SD-HYSThermal shutdown hysteresis10°C
All hot and cold limits are specified by correlating the electrical characteristics to process and temperature variations and applying statistical process control.
The junction temperature (TJ in °C) is calculated from the ambient temperature (TA in °C) and power dissipation (PD in Watts) as follows: TJ = TA + (PD × RθJA) where RθJA (in °C/W) is the package thermal impedance provided in Section 6.4.