SNVSAJ3B March   2016  – February 2017 LM5165-Q1

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 Community 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

Specifications

Absolute Maximum Ratings

Over the recommended operating junction temperature range of –40°C to 150°C (unless otherwise noted).(1)(2)
MIN MAX UNIT
VIN, EN to GND –0.3 68 V
SW to GND –0.7 VVIN + 0.3 V
20-ns transient –3 V
PGOOD, VOUT(3) to GND Survives short to automotive battery voltage –0.3 16 V
HYS to GND –0.3 7 V
ILIM, SS, RT, FB(4) to GND –0.3 3.6 V
Maximum junction temperature, TJ –40 150 °C
Storage temperature, Tstg –55 150 °C
Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under Recommended Operating Conditions is not implied. Exposure to absolute-maximum-rated conditions may affect device reliability.
If Military/Aerospace specified devices are required, please contact the Texas Instruments Sales Office/Distributors for availability and specifications.
Fixed output versions.
Adjustable output version.

ESD Ratings

VALUE UNIT
VESD Electrostatic discharge Human body model (HBM), per AEC Q100-002(1)(2) ±2000 V
Charged device model (CDM), per AEC Q100-011(3) All pins except 1, 5, 6, and 10 ±500
Pin 1, 5, 6, and 10 ±750
AEC Q100-002 indicates HBM stressing is done in accordance with the ANSI/ESDA/JEDEC JS-001 specification.
Level listed above is the passing level per ANSI/ESDA/JEDEC JS-001. JEDEC document JEP155 states that 500-V HBM allows safe manufacturing with a standard ESD control process.
Level listed above is the passing level per EIA-JEDEC JESD22-C101. JEDEC document JEP157 states that 250-V CDM allows safe manufacturing with a standard ESD control process.

Recommended Operating Conditions(1)

Over the recommended operating junction temperature range of –40°C to 150°C (unless otherwise noted).
MIN MAX UNIT
Input voltages VIN 3 65 V
EN –0.3 65
PGOOD –0.3 12
HYS –0.3 5.5
Output current IOUT (COT mode) 0 150 mA
IOUT (PFM mode) 0 100
Temperature Operating junction temperature –40 150 °C
Operating Ratings are conditions under which the device is intended to be functional. For specifications and test conditions, see Electrical Characteristics.

Thermal Information

THERMAL METRIC(1) LM5165-Q1 UNIT
DRC (VSON) DGS (VSSOP)
10 PINS 10 PINS
RθJA Junction-to-ambient thermal resistance 47.7 157.1 °C/W
RθJC(top) Junction-to-case (top) thermal resistance 59.9 48.8 °C/W
RθJB Junction-to-board thermal resistance 22.1 77 °C/W
ψJT Junction-to-top characterization parameter 1 4.5 °C/W
ψJB Junction-to-board characterization parameter 22.2 75.7 °C/W
RθJC(bot) Junction-to-case (bottom) thermal resistance 4 N/A °C/W
For more information about traditional and new thermal metrics, see the IC Package Thermal Metrics application report.

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)
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
QUIESCENT CURRENTS
IQ-SHD VIN DC supply current, shutdown VEN = 0 V, TA = 25°C 4.6 6 µA
IQ-SLEEP VIN DC supply current, no load VFB = 1.5 V, TA = 25°C 10.5 15 µA
IQ-SLEEP-VINMAX VIN DC supply current, no load VFB = 1.5 V, VVIN = 65 V, TA = 25°C 11 15 µA
IQ-ACTIVE-PFM VIN DC supply current, active PFM mode 205 µA
IQ-ACTIVE-COT VIN DC supply current, active COT mode, RRT = 107 kΩ 300 µA
POWER SWITCHES
RDSON1 High-side MOSFET RDS(on) ISW = –10 mA 2 Ω
RDSON2 Low-side MOSFET RDS(on) ISW = 10 mA 1 Ω
CURRENT LIMITING
ILIM1-VSON High-side peak current threshold
VSON-10 package
ILIM shorted to GND 220 240 264 mA
ILIM2-VSON RILIM = 24.9 kΩ 155 180 205
ILIM3-VSON RILIM = 56.2 kΩ 100 120 145
ILIM4-VSON RILIM ≥ 100 kΩ 48 60 75
ILIM1-VSSOP High-side peak current threshold
VSSOP-10 package
ILIM shorted to GND 215 240 270 mA
ILIM2-VSSOP RILIM = 24.9 kΩ 157 180 207
ILIM3-VSSOP RILIM = 56.2 kΩ 100 120 146
ILIM4-VSSOP RILIM ≥ 100 kΩ 41 60 81
REGULATION COMPARATOR
VVOUT50 VOUT 5-V DC setpoint LM5165X 4.9 5 5.1 V
VVOUT33 VOUT 3.3-V DC setpoint LM5165Y 3.23 3.3 3.37 V
IVOUT VOUT pin input current VVOUT = 5 V, LM5165X-Q1 6.7 µA
VVOUT = 3.3 V, LM5165Y-Q1 3.9
VREF1 Lower FB regulation threshold (PFM, COT) Adjustable output version 1.205 1.223 1.241 V
VREF2 Upper FB regulation threshold (PFM) 1.22 1.233 1.246
FBHYS-PFM FB comparator PFM hysteresis PFM mode 10 mV
FBHYS-COT FB comparator dropout hysteresis COT mode 4 mV
IFB FB pin input bias current VFB = 1 V 100 nA
FBLINE-REG FB threshold variation over line VVIN = 3 V to 65 V 0.001 %/V
VOUTLINE-REG VOUT threshold variation over line LM5165X-Q1, VVIN = 6 V to 65 V
LM5165Y-Q1, VVIN = 4.5 V to 65 V
0.001 %/V
POWER GOOD
UVTRISING PGOOD comparator FB voltage rising, relative to VREF1 94%
UVTFALLING FB voltage falling, relative to VREF1 87%
RPGOOD PGOOD on-resistance VFB = 1 V 80 200 Ω
VINMIN-PGOOD Minimum VIN for valid PGOOD VVIN falling, IPGOOD = 0.1 mA, VPGOOD < 0.5 V 1.2 1.65 V
IPGOOD PGOOD off-state leakage current VFB = 1.2 V, VPGOOD = 5.5 V 10 100 nA
ENABLE / UVLO
VIN-ON Turnon threshold VIN voltage rising 2.6 2.75 2.95 V
VIN-OFF Turnoff threshold VIN voltage falling 2.35 2.45 2.6 V
VEN-ON Enable turnon threshold EN voltage rising 1.163 1.212 1.262 V
VEN-OFF Enable turnoff threshold EN voltage falling 1.109 1.144 1.178 V
VEN-HYS Enable hysteresis 68 mV
VEN-SD EN shutdown threshold EN voltage falling 0.3 0.6 V
RHYS HYS on-resistance VEN = 1 V 80 200 Ω
IHYS HYS off-state leakage current VEN = 1.5 V, VHYS = 5.5 V 10 100 nA
SOFT-START
ISS Soft-start charging current VSS = 1 V 10 µA
TSS-INT Soft-start rise time SS floating 900 µs
THERMAL SHUTDOWN
TJ-SD Thermal shutdown threshold 170 °C
TJ-SD-HYS Thermal shutdown hysteresis 10 °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 the Thermal Information section.

Switching Characteristics

Over operating free-air temperature range (unless otherwise noted).
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
TON-MIN Minimum controllable PWM on-time 180 ns
TON1 PWM on-time 16 kΩ from RT to GND 250 ns
TON2 PWM on-time 75 kΩ from RT to GND 1000 ns

Typical Characteristics

Unless otherwise specified, VIN = 12 V, VOUT = 5 V. Please refer to Typical Applications for circuit designs.
LM5165-Q1 D101_snvsa47.gif
5-V, 25-mA Design LF = 470 µH
COUT = 47 µF
FSW(nom) = 100 kHz
RILIM ≥ 100 kΩ
Figure 1. Converter Efficiency: 5 V, 25 mA, PFM
LM5165-Q1 D103_snvsa47.gif
See schematic,
Figure 50
LF = 47 µH
COUT = 10 µF
FSW(nom) = 350 kHz
RILIM = 56.2 kΩ
Figure 3. Converter Efficiency: 3.3 V, 50 mA, PFM
LM5165-Q1 D105_snvsa47.gif
See schematic,
Figure 57
LF = 47 µH
COUT = 10 µF
FSW(nom) = 500 kHz
RILIM = 24.9 kΩ
Figure 5. Converter Efficiency: 12 V, 75 mA, PFM
LM5165-Q1 D001_snvsa47.gif
Figure 7. High-Side MOSFET On-State Resistance vs Input Voltage
LM5165-Q1 D004_SNVSA47.gif
Figure 9. Enable Threshold Voltage vs Temperature
LM5165-Q1 D007_SNVSA47.gif
LM5165X
Figure 11. VOUT Regulation Thresholds vs Temperature
LM5165-Q1 D008_SNVSA47.gif
Figure 13. PGOOD Thresholds vs Temperature
LM5165-Q1 D010_snvsa47.gif
Figure 15. Peak Current Limits vs Input Voltage
LM5165-Q1 D012_snvsa47.gif
Figure 17. COT One-Shot Timer TON vs Input Voltage
LM5165-Q1 D014_snvsa47.gif
Figure 19. VIN Sleep and Shutdown Supply Current vs Temperature
LM5165-Q1 D016_snvsa47.gif
RRT = 75 kΩ
Figure 21. VIN Active Mode Supply Current vs Temperature
LM5165-Q1 SW_IL_24V_5Vout_150mA_nvsa47.gif Figure 23. Full Load Switching Waveforms, COT
LM5165-Q1 Snap_startup_24Vin_5V_150mA_nvsa47.gif Figure 25. Full Load Start-Up, COT
LM5165-Q1 SW_IL_24V_5Vout_25mA_PFM_nvsa47.gif Figure 27. Full Load Switching Waveforms, PFM
LM5165-Q1 Snap_start_24Vin_5V_12mA_PFM_nvsa47.gif Figure 29. Full Load Start-Up, PFM
LM5165-Q1 D102_snvsa47.gif
See schematic,
Figure 37
LF = 220 µH
COUT = 22 µF
FSW(nom) = 230 kHz
RRT = 133 kΩ
Figure 2. Converter Efficiency: 5 V, 150 mA, COT
LM5165-Q1 D104_snvsa47.gif
See schematic,
Figure 62
LF = 150 µH
COUT = 22 µF
FSW(nom) = 160 kHz
RRT = 121 kΩ
Figure 4. Converter Efficiency: 3.3 V, 150 mA, COT
LM5165-Q1 D106_snvsa47.gif
See schematic,
Figure 65
LF = 150 µH
COUT = 10 µF
FSW(nom) = 600 kHz
RRT = 143 kΩ
Figure 6. Converter Efficiency: 15 V, 150 mA, COT
LM5165-Q1 D002_snvsa47.gif
Figure 8. Low-Side MOSFET On-State Resistance vs Input Voltage
LM5165-Q1 D005_SNVSA47.gif
Figure 10. Feedback Comparator Voltage vs Temperature
LM5165-Q1 D006_SNVSA47.gif
LM5165Y
Figure 12. VOUT Regulation Thresholds vs Temperature
LM5165-Q1 D009_SNVSA47.gif
Figure 14. Peak Current Limits vs Temperature
LM5165-Q1 D011_SNVSA47.gif
Figure 16. PGOOD and HYS Pulldown RDS(on) vs Temperature
LM5165-Q1 D013_SNVSA47.gif
Figure 18. Internal VIN UVLO Voltage vs Temperature
LM5165-Q1 D015_snvsa47.gif
Figure 20. VIN Sleep and Shutdown Supply Current vs Input Voltage
LM5165-Q1 D017_snvsa47.gif
RRT = 75 kΩ
Figure 22. VIN Active Mode Supply Current vs Input Voltage
LM5165-Q1 SW_IL_24V_5Vout_0mA_nvsa47.gif Figure 24. No Load Switching Waveforms, COT
LM5165-Q1 Short_cct_24V_5Vout_150mA_nvsa47.gif Figure 26. Short Circuit, COT
LM5165-Q1 SW_IL_24V_5Vout_0mA_PFM_nvsa47.gif Figure 28. No Load Switching Waveforms, PFM
LM5165-Q1 Short_cct_24V_5Vout_25mA_PFM.gif Figure 30. Short Circuit, PFM