ZHCSN39A February   2020  – November 2021 LM61480 , LM61495 , LM62460

PRODUCTION DATA  

  1. 1 特性
  2. 2 应用
  3. 3 说明
  4. 4 Revision History
  5. 5 Device Comparison Table
  6. 6 Pin Configuration and Functions
  7. 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. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1  Output Voltage Selection
      2. 8.3.2  Enable EN Pin and Use as VIN UVLO
      3. 8.3.3  SYNC/MODE Uses for Synchronization
      4. 8.3.4  Clock Locking
      5. 8.3.5  Adjustable Switching Frequency
      6. 8.3.6  RESET Output Operation
      7. 8.3.7  Internal LDO, VCC UVLO, and BIAS Input
      8. 8.3.8  Bootstrap Voltage and VCBOOT-UVLO (CBOOT Pin)
      9. 8.3.9  Adjustable SW Node Slew Rate
      10. 8.3.10 Spread Spectrum
      11. 8.3.11 Soft Start and Recovery From Dropout
      12. 8.3.12 Overcurrent and Short Circuit Protection
      13. 8.3.13 Hiccup
      14. 8.3.14 Thermal Shutdown
    4. 8.4 Device Functional Modes
      1. 8.4.1 Shutdown Mode
      2. 8.4.2 Standby Mode
      3. 8.4.3 Active Mode
        1. 8.4.3.1 Peak Current Mode Operation
        2. 8.4.3.2 Auto Mode Operation
          1. 8.4.3.2.1 Diode Emulation
        3. 8.4.3.3 FPWM Mode Operation
        4. 8.4.3.4 Minimum On-time (High Input Voltage) Operation
        5. 8.4.3.5 Dropout
        6. 8.4.3.6 Recovery from Dropout
        7. 8.4.3.7 Other Fault Modes
  9. 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
        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  BOOT Capacitor
        7. 9.2.2.7  BOOT Resistor
        8. 9.2.2.8  VCC
        9. 9.2.2.9  CFF and RFF Selection
        10. 9.2.2.10 RSPSP Selection
        11. 9.2.2.11 RT Selection
        12. 9.2.2.12 RMODE Selection
        13. 9.2.2.13 External UVLO
        14. 9.2.2.14 Maximum Ambient Temperature
      3. 9.2.3 Application Curves
  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 Device Support
      1. 12.1.1 第三方米6体育平台手机版_好二三四免责声明
    2. 12.2 接收文档更新通知
    3. 12.3 支持资源
    4. 12.4 Trademarks
    5. 12.5 术语表
    6. 12.6 Electrostatic Discharge Caution
  13. 13Mechanical, Packaging, and Orderable Information

封装选项

机械数据 (封装 | 引脚)
散热焊盘机械数据 (封装 | 引脚)
订购信息

9.2.3 Application Curves

Unless otherwise specified, the following conditions apply: Device: LM61495-Q1, VIN = 13.5 V, TA = 25°C. The circuit is shown in Figure 9-1, with the appropriate BOM from Table 9-4.
Unless otherwise specified, the following conditions apply: Device: LM61495-Q1, VIN = 13.5 V, TA = 25°C. The circuit is shown in Figure 9-1, with the appropriate BOM from Table 9-4.
VOUT = 5 V FSW = 400 kHz Auto mode
Figure 9-5 Efficiency. Unless otherwise specified, the following conditions apply: Device: LM61495-Q1, VIN = 13.5 V, TA = 25°C. The circuit is shown in Figure 9-1, with the appropriate BOM from Table 9-4.
VOUT = 3.3 V FSW = 400 kHz Auto mode
Figure 9-7 Efficiency
VOUT = 5 V FSW = 2.2 MHz Auto mode
Figure 9-9 Efficiency
VOUT = 3.3 V FSW = 2.2 MHz Auto mode
Figure 9-11 Efficiency
GUID-20201209-CA0I-ZGDK-PX0V-S3JLJRRJVPLP-low.gif
VOUT = 5 V FSW = 400 kHz Auto mode
Figure 9-13 Load and Line Regulation
VOUT = 3.3 V FSW = 400 kHz Auto mode
Figure 9-15 Load and Line Regulation
GUID-20201209-CA0I-CCRQ-632D-GHMX4PQZHM1D-low.gif
VOUT = 5 V FSW = 2.2 MHz Auto mode
Figure 9-17 Load and Line Regulation
GUID-20201209-CA0I-7J4W-W9GR-WXNZDS4HFGCT-low.gif
VOUT = 3.3 V FSW = 2.2 MHz Auto mode
Figure 9-19 Load and Line Regulation
VOUT = 5 V FSW = 400 kHz Auto mode
Figure 9-21 Dropout
GUID-20201209-CA0I-D9CL-PPQK-QPVDPG9ZBHZG-low.gif
VOUT = 5 V FSW = 2.2 MHz Auto mode
Figure 9-23 Dropout
GUID-20201209-CA0I-LF4Q-NZPN-65VHMRKZTV96-low.gif
VOUT = 5 V FSW = 400 kHz Auto mode
Figure 9-25 Frequency Dropout
GUID-20201209-CA0I-M6JR-CLSJ-GFNHMJR8H0JR-low.gif
VOUT = 5 V FSW = 2.2 MHz Auto mode
Figure 9-27 Frequency Dropout
GUID-20210303-CA0I-FRBD-8NV8-SBPLHB5KDFWK-low.png
VOUT = 5 V FSW = 2100 kHz Auto mode
IOUT = 50 mA VIN = 13.5 V
Figure 9-29 Switching Waveform and VOUT Ripple
GUID-20210303-CA0I-R26T-C2N9-VBXVRLHM86QR-low.png
VOUT = 5 V FSW = 2100 kHz Auto mode
IOUT = 50 mA VIN = 13.5 V
Figure 9-31 Start-up with 50-mA Load
GUID-20210303-CA0I-VDGN-BLQS-M3GCSFBPSFNP-low.png
VOUT = 3.3 V FSW = 2100 kHz FPWM mode
IOUT = 3.25 A VIN = 13.5 V
Figure 9-33 Start-up with 3.25-A Load
GUID-20210303-CA0I-MQBJ-MZXC-WLZSB25X1WHW-low.png
VOUT = 5 V FSW = 2100 kHz FPWM mode
IOUT = Short Circuit to 5 A VIN = 13.5 V
Figure 9-35 Short Circuit Recovery
GUID-20210303-CA0I-VZKK-6NZH-XQ4ZTGZ0J3WL-low.png
VOUT = 5 V FSW = 400 kHz Auto mode
IOUT = 10 mA to 10 A to 10 mA VIN = 13.5 V TR = TF = 1 µs
Figure 9-37 Load Transient
GUID-20210303-CA0I-JXXK-JFJQ-RNH8KXJKLJT2-low.png
VOUT = 5 V FSW = 400 kHz Auto mode
IOUT = 2 A to 4 A to 2 A VIN = 13.5 V TR = TF = 1 µs
Figure 9-39 Load Transient
GUID-20210303-CA0I-CX2M-WKRB-SM9VGGJ9KLTJ-low.png
VOUT = 3.3 V FSW = 400 kHz Auto mode
IOUT = 10 mA to 10 A to 10 mA VIN = 13.5 V TR = TF = 1 µs
Figure 9-41 Load Transient
GUID-20210303-CA0I-GGV4-BFSV-LQX9PHHPDWZZ-low.png
VOUT = 5 V FSW = 2200 kHz FPWM mode
IOUT = 10 mA to 10 A to 10 mA VIN = 13.5 V TR = TF = 1 µs
Figure 9-43 Load Transient
GUID-20210303-CA0I-XQ6X-PPVS-6HDJPVJ9JHJS-low.png
VOUT = 5 V FSW = 2200 kHz Auto mode
IOUT = 5 A to 10 A to 5 A VIN = 13.5 V TR = TF = 1 µs
Figure 9-45 Load Transient
GUID-20211026-SS0I-XRJ1-GK6F-0FQTZXDTPW9T-low.gif
VOUT = 5 V FSW = 400 kHz IOUT = 10 A
Frequency Tested: 30 MHz to 1 GHz
Figure 9-47 Radiated EMI Bicon Horizontal versus CISPR11/32 Class 5 Limits
VOUT = 5 V FSW = 400 kHz FPWM mode
Figure 9-6 Efficiency
GUID-20201209-CA0I-GJDS-WD3M-VHRGSNRSFJXC-low.gif
VOUT = 3.3 V FSW = 400 kHz FPWM mode
Figure 9-8 Efficiency
VOUT = 5 V FSW = 2.2 MHz FPWM mode
Figure 9-10 Efficiency
VOUT = 3.3 V FSW = 2.2 MHz FPWM mode
Figure 9-12 Efficiency
VOUT = 5 V FSW = 400 kHz FPWM mode
Figure 9-14 Load and Line Regulation
VOUT = 3.3 V FSW = 400 kHz FPWM mode
Figure 9-16 Load and Line Regulation
VOUT = 5 V FSW = 2.2 MHz FPWM mode
Figure 9-18 Load and Line Regulation
GUID-20201209-CA0I-TZPS-BTR6-N1ZZLL2BTX4D-low.gif
VOUT = 3.3 V FSW = 2.2 MHz FPWM mode
Figure 9-20 Load and Line Regulation
GUID-20201209-CA0I-KVWZ-0JJQ-JQX7NKK9LFS2-low.gif
VOUT = 3.3 V FSW = 400 kHz Auto mode
Figure 9-22 Dropout
GUID-20201209-CA0I-0VW3-XCMJ-XP1RR1Q65B6N-low.gif
VOUT = 3.3 V FSW = 2.2 MHz Auto mode
Figure 9-24 Dropout
VOUT = 3.3 V FSW = 400 kHz Auto mode
Figure 9-26 Frequency Dropout
GUID-20201209-CA0I-JKVT-S6HP-G16S7RZ76ZS6-low.gif
VOUT = 3.3 V FSW = 2.2 MHz Auto mode
Figure 9-28 Frequency Dropout
GUID-20210303-CA0I-7VNR-LSCV-RK5FVKFGLV2Q-low.png
VOUT = 5 V FSW = 2100 kHz FPWM mode
IOUT = 50 mA VIN = 13.5 V
Figure 9-30 Switching Waveform and VOUT Ripple
GUID-20210303-CA0I-VNDK-3DMD-CDLDN2RRXK72-low.png
VOUT = 5 V FSW = 2100 kHz FPWM mode
IOUT = 50 mA VIN = 13.5 V
Figure 9-32 Start-up with 50-mA Load
GUID-20210303-CA0I-JZKV-ZGTC-QQZRHN7JHVFH-low.png
VOUT = 5 V FSW = 2100 kHz FPWM mode
IOUT = 5 A to Short Circuit VIN = 13.5 V
Figure 9-34 Short Circuit Protection
GUID-20210303-CA0I-WCJ3-66KD-GS1THQFN4WF4-low.png
VOUT = 5 V FSW = 2100 kHz FPWM mode
IOUT = 4 A VIN = 13.5 V to 4 V to 13.5 V
Figure 9-36 Recovery from Dropout
GUID-20210303-CA0I-D760-LD0R-5ZWGPWHTSWFF-low.png
VOUT = 5 V FSW = 400 kHz FPWM mode
IOUT = 10 mA to 10 A to 10 mA VIN = 13.5 V TR = TF = 1 µs
Figure 9-38 Load Transient
GUID-20210303-CA0I-9ZR8-VSJL-N54WLMGHRGST-low.png
VOUT = 5 V FSW = 400 kHz Auto mode
IOUT = 5 A to 10 A to 5 A VIN = 13.5 V TR = TF = 1 µs
Figure 9-40 Load Transient
GUID-20210303-CA0I-MV40-FZHV-H5BBZ60XHMRG-low.png
VOUT = 3.3 V FSW = 400 kHz Auto mode
IOUT = 5 A to 10 A to 5 A VIN = 13.5 V TR = TF = 1 µs
Figure 9-42 Load Transient
GUID-20210303-CA0I-HXVK-HZPV-RBC3LV38BDJL-low.png
VOUT = 5 V FSW = 2200 kHz Auto mode
IOUT = 2 A to 4 A to 2 A VIN = 13.5 V TR = TF = 1 µs
Figure 9-44 Load Transient
GUID-20211026-SS0I-WP1N-CTHP-NPKJHLX3PFPS-low.gif
VOUT = 5 V FSW = 400 kHz IOUT = 10 A
Frequency Tested: 30 MHz to 1 GHz
Figure 9-46 Radiated EMI Bicon Vertical versus CISPR11/32 Limits
GUID-20211026-SS0I-MWXG-LFFT-2WBHRPQM8XXL-low.gif
 
 
 
 
 
 
Figure 9-48 Recommended Input EMI Filter
Table 9-4 BOM for Typical Application Curves
VOUT FREQUENCY RFBB COUT CIN + CHF L CFF
3.3 V 400 kHz 43.2 kΩ 4 x 47 µF + 100 µF electrolytic + 2 x 2.2 µF 4 × 10 µF + 2 × 470 nF + 100 µF electrolytic 2.4 µH (744325240) 22 pF
3.3 V 2200 kHz 43.2 kΩ 2 x 47 µF + 100 µF electrolytic + 2 x 2.2 µF 2 × 10 µF + 2 × 470 nF + 100 µF electrolytic 0.68 µH (744373460068) 10 pF
5 V 400 kHz 24.9 kΩ 4 x 47 µF + 100 µF electrolytic + 2 x 2.2 µF 4 × 10 µF + 2 × 470 nF + 100 µF electrolytic 2.4 µH (744325240) 22 pF
5 V 2200 kHz 24.9 kΩ 2 x 47 µF + 100 µF electrolytic + 2 x 2.2 µF 2 × 10 µF + 2 × 470 nF + 100 µF electrolytic 0.68 µH (744373460068) 10 pF
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