JAJSME4 November   2023 LMR36500

PRODMIX  

  1.   1
  2. 1 特長
  3. 2 アプリケーション
  4. 3 概要
  5. 4 Device Comparison Table
  6. 5 Pin Configuration and Functions
  7. 6 Specifications
    1. 6.1 Absolute Maximum Ratings
    2. 6.2 ESD (Commercial) Ratings
    3. 6.3 Recommended Operating Conditions
    4. 6.4 Thermal Information
    5. 6.5 Electrical Characteristics
    6. 6.6 System Characteristics
    7. 6.7 Typical Characteristics
  8. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 Enable, Shutdown, and Start-up
      2. 7.3.2 Adjustable Switching Frequency (with RT)
      3. 7.3.3 Power-Good Output Operation
      4. 7.3.4 Internal LDO, VCC UVLO, and VOUT/FB Input
      5. 7.3.5 Bootstrap Voltage and VBOOT-UVLO (BOOT Terminal)
      6. 7.3.6 Output Voltage Selection
      7. 7.3.7 Soft Start and Recovery from Dropout
        1. 7.3.7.1 Soft Start
        2. 7.3.7.2 Recovery from Dropout
      8. 7.3.8 Current Limit and Short Circuit
      9. 7.3.9 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
        1. 7.4.3.1 CCM Mode
        2. 7.4.3.2 AUTO Mode - Light Load Operation
          1. 7.4.3.2.1 Diode Emulation
          2. 7.4.3.2.2 Frequency Reduction
        3. 7.4.3.3 FPWM Mode - Light Load Operation
        4. 7.4.3.4 Minimum On-time Operation
        5. 7.4.3.5 Dropout
  9. 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  Choosing the Switching Frequency
        2. 8.2.2.2  Setting the Output Voltage
          1. 8.2.2.2.1 VOUT / FB for Adjustable Output
        3. 8.2.2.3  Inductor Selection
        4. 8.2.2.4  Output Capacitor Selection
        5. 8.2.2.5  Input Capacitor Selection
        6. 8.2.2.6  CBOOT
        7. 8.2.2.7  VCC
        8. 8.2.2.8  CFF Selection
        9. 8.2.2.9  External UVLO
        10. 8.2.2.10 Maximum Ambient Temperature
      3. 8.2.3 Application Curves
    3. 8.3 Best Design Practices
    4. 8.4 Power Supply Recommendations
    5. 8.5 Layout
      1. 8.5.1 Layout Guidelines
        1. 8.5.1.1 Ground and Thermal Considerations
      2. 8.5.2 Layout Example
  10. 9 Device and Documentation Support
    1. 9.1 Device Support
      1. 9.1.1 Device Nomenclature
    2. 9.2 Documentation Support
      1. 9.2.1 Related Documentation
    3. 9.3 ドキュメントの更新通知を受け取る方法
    4. 9.4 サポート・リソース
    5. 9.5 Trademarks
    6. 9.6 静電気放電に関する注意事項
    7. 9.7 用語集
  11. 10Revision History
  12. 11Mechanical, Packaging, and Orderable Information

パッケージ・オプション

メカニカル・データ（パッケージ｜ピン）
サーマルパッド・メカニカル・データ
発注情報

8.2.3 Application Curves

The data in this section was taken with the LMR36500EVM. All curves are typical at TA = 25ºC. See Table 8-4 for details.

GUID-20230921-SS0I-H5FB-V2XJ-VJJ2T07J4VDQ-low.svg
LMR36500P5 VOUT = 5 V Fixed 1 MHz (AUTO)
Figure 8-5 Efficiency
GUID-20230922-SS0I-G8GR-JDKT-QMRBFVDNWWGW-low.svg
LMR36500F5 VOUT = 5 V Fixed 1 MHz (FPWM)
Figure 8-7 Efficiency
GUID-20231012-SS0I-2QNL-8V1J-QBG2BZB8HQW0-low.svg
LMR36500P3 VOUT = 3.3 V Fixed 600 kHz (AUTO)
Figure 8-9 Efficiency
GUID-20230921-SS0I-ZLZC-VKQG-DQ5BK8PC5ZMP-low.svg
LMR36500P5 VOUT = 5 V Fixed 1 MHz (AUTO)
Figure 8-11 Line and Load Regulation
GUID-20230921-SS0I-VXRM-TWHP-JKBTPFR2D76P-low.svg
LMR36500P (fixed) IOUT = 0 mA 1 MHz (AUTO)
Figure 8-13 No Load Input Current
GUID-20230922-SS0I-67DL-F970-WG4PWW9JHRBC-low.svg
LMR36500P3 VOUT = 3.3 V Fixed 1 MHz (AUTO)
Figure 8-15 Switching Frequency vs Input Voltage
GUID-20230923-SS0I-6DBG-SDWC-32XV9NGCPPN9-low.svg
LMR36500P5 VOUT = 5 V Fixed 1 MHz (AUTO)
Figure 8-17 Drop-Out Voltage to –1% VOUT
GUID-20230925-SS0I-1XDL-MJMF-6GR06RHMZVXX-low.svg
LMR36500P3 VOUT = 3.3 V Fixed 1 MHz (AUTO)
VIN = 12 V Iout = 5 mA to 50 mA
Figure 8-19 Load Transient
GUID-20230925-SS0I-HQWW-GCMC-QX9XBT2FMLFQ-low.svg
LMR36500F3 VOUT = 3.3 V Fixed 1 MHz (FPWM)
VIN = 12 V Iout = 0 mA to 50 mA
Figure 8-21 Load Transient
GUID-20230921-SS0I-RDBS-LSSX-L6LNSRNGC3SK-low.svg
VOUT = 5 V IOUT = 50 mA 1 MHz (AUTO)
VIN = 65 V
Figure 8-23 Thermal Image (LMR36500EVM)
GUID-20230921-SS0I-JCZV-PL1C-GSBKRFH0FT6B-low.svg
LMR36500P5 VOUT = 5 V Fixed 1 MHz (FPWM)
VIN = 24 V No EMI Filter CIN = 3x 2.2μF
Figure 8-25 Conducted Emissions (positive)
GUID-20230928-SS0I-H9K1-CDHM-PM30WGHWFNDH-low.svg
LMR36500P VOUT = 12 V (ADJ) 1 MHz (AUTO)
Figure 8-27 Efficiency
GUID-20230928-SS0I-XTG4-KNCF-J1HPQ94FSVL2-low.svg
LMR36500P VOUT = 12 V (ADJ) 1 MHz (AUTO)
VIN = 24 V Iout = 5 mA to 50 mA
Figure 8-29 Load Transient
GUID-20230925-SS0I-09KT-JFX3-8SG0L8GMZXVB-low.svg
LMR36500P5 VOUT = 5 V 1 MHz (AUTO)
VIN = 24 V Iout = 50 mA
Figure 8-31 Typical Switching Waveforms
GUID-20230831-SS0I-MHGL-S4QS-6MHZ3N8F5VJK-low.svg
LMR36500P3 VOUT = 3.3 V Fixed 1 MHz (AUTO)
Figure 8-6 Efficiency
GUID-20230922-SS0I-29LS-FL7Q-BF25NTV6FPWJ-low.svg
LMR36500F3 VOUT = 3.3 V Fixed 1 MHz (FPWM)
Figure 8-8 Efficiency
GUID-20231012-SS0I-W3H8-FGTR-L4QQZDMQ9CDF-low.svg
LMR36500P5 VOUT = 5 V Fixed 600 kHz (AUTO)
Figure 8-10 Efficiency
GUID-20230921-SS0I-3XGF-3JN7-H8XTBM5VZLCP-low.svg
LMR36500P3 VOUT = 3.3 V Fixed 1 MHz (AUTO)
Figure 8-12 Line and Load Regulation
GUID-20230922-SS0I-LX2C-ZNL7-6T6C51H1TFJT-low.svg
LMR36500P3 VOUT = 3.3 V Fixed 1 MHz (FPWM)
Figure 8-14 Output Voltage vs Input Voltage
GUID-20230921-SS0I-HJV0-P2QW-FDZMTM3LPNCS-low.svg
LMR36500P3 VIN = 12 V Fixed 1 MHz (AUTO)
Figure 8-16 Switching Frequency vs Output Current
GUID-20230923-SS0I-BXJH-4XDP-7D1Z26ZXWJMD-low.svg
LMR36500P5 VOUT = 5 V Fixed 1 MHz (AUTO)
Figure 8-18 Drop-Out Voltage to Frequency Fold-back
GUID-20230925-SS0I-RVML-FN0P-WWSHZ81WPSDT-low.svg
LMR36500P5 VOUT = 5 V Fixed 1 MHz (AUTO)
VIN = 12 V Iout = 5 mA to 50 mA
Figure 8-20 Load Transient
GUID-20230925-SS0I-9FV3-XJTN-GKZXFTSBMVWM-low.svg
LMR36500F5 VOUT = 5 V Fixed 1 MHz (FPWM)
VIN = 12 V Iout = 0 mA to 50 mA
Figure 8-22 Load Transient
GUID-20230921-SS0I-ZNGW-MXKZ-ZLWFHXHHZPBX-low.svg
LMR36500P5 VOUT = 5 V Fixed 1 MHz (FPWM)
VIN = 24 V No EMI Filter CIN = 3x 2.2μF
Figure 8-24 Radiated Emissions
GUID-20230921-SS0I-1RHV-VCPM-4RZPPN7RP6LQ-low.svg
LMR36500P5 VOUT = 5 V Fixed 1 MHz (FPWM)
VIN = 24 V No EMI Filter CIN = 3x 2.2μF
Figure 8-26 Conducted Emissions (Negative)
GUID-20230928-SS0I-0W4M-K4BH-NMWXZ5880GHX-low.svg
LMR36500P VOUT = 1.8 V (ADJ) 1 MHz (AUTO)
Figure 8-28 Efficiency
GUID-20230928-SS0I-HLH9-JH6X-JVZF7CP8HHM0-low.svg
LMR36500P VOUT = 1.8 V (ADJ) 1 MHz (AUTO)
VIN = 12 V Iout = 5 mA to 50 mA
Figure 8-30 Load Transient
GUID-20230925-SS0I-HGWK-BW6S-19W5DVZWXBKD-low.svg
LMR36500P5 VOUT = 5 V 1 MHz (AUTO)
VIN = 24 V Iout = 5 mA
Figure 8-32 Typical Switching Waveforms
Table 8-4 BOM for Typical Application Curves
Output Voltage Frequency RFBB RFBT COUT L CFF
5 V (fixed) 1 MHz OPEN 0 Ω 2 × 2.2 μF 220 μH, 1.1 Ω, MSS5131-224MLC N/A
3.3 V (fixed) 1 MHz OPEN 0 Ω 2 × 2.2 μF 220 μH, 1.1 Ω, MSS5131-224MLC N/A
1.8 V 1 MHz 12.1 kΩ 10 kΩ 2 × 2.2 μF 220 μH, 1.1 Ω, MSS5131-224MLC 0 pF
12 V 1 MHz 9.09 kΩ 100 kΩ 2 × 2.2 μF 330 μH, 1.6Ω, MSS5131-334MLB 150 pF
5 V (fixed) 600 kHz OPEN 0 Ω 2 × 2.2 μF 330 μH, 0.81 Ω, 744775233 N/A
3.3 V (fixed) 600 kHz OPEN 0 Ω 2 × 2.2 μF 330 μH, 0.81 Ω, 744775233 N/A