SNVSAA7A December   2015  – May 2016 LM53625-Q1 , LM53635-Q1

PRODUCTION DATA.  

  1. Features
  2. Applications
  3. Description
    1.     Device Images
      1.      Typical Application Circuit
      2.      Typical Automotive Layout (22 mm x 12.5 mm)
  4. Revision History
  5. Device Comparison
  6. Pin Configuration and Functions
    1.     Pin 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 System Characteristics
    7. 7.7 Timing Characteristics
    8. 7.8 Typical Characteristics
  8. Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
      1. 8.2.1 Control Scheme
    3. 8.3 Feature Description
      1. 8.3.1 RESET Flag Output
      2. 8.3.2 Enable and Start-Up
      3. 8.3.3 Soft-Start Function
      4. 8.3.4 Current Limit
      5. 8.3.5 Hiccup Mode
      6. 8.3.6 Synchronizing Input
      7. 8.3.7 Undervoltage Lockout (UVLO) and Thermal Shutdown (TSD)
      8. 8.3.8 Input Supply Current
    4. 8.4 Device Functional Modes
      1. 8.4.1 AUTO Mode
      2. 8.4.2 FPWM Mode
      3. 8.4.3 Dropout
      4. 8.4.4 Input Voltage Frequency Foldback
    5. 8.5 Spread-Spectrum Operation
  9. Application and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Applications
      1. 9.2.1 General Application
        1. 9.2.1.1 Design Requirements
        2. 9.2.1.2 Detailed Design Procedure
          1. 9.2.1.2.1 External Components Selection
            1. 9.2.1.2.1.1 Input Capacitors
              1. 9.2.1.2.1.1.1 Input Capacitor Selection
            2. 9.2.1.2.1.2 Output Inductors and Capacitors Selection
              1. 9.2.1.2.1.2.1 Inductor Selection
              2. 9.2.1.2.1.2.2 Output Capacitor Selection
          2. 9.2.1.2.2 Setting the Output Voltage
            1. 9.2.1.2.2.1 FB for Adjustable Versions
          3. 9.2.1.2.3 VCC
          4. 9.2.1.2.4 BIAS
          5. 9.2.1.2.5 CBOOT
          6. 9.2.1.2.6 Maximum Ambient Temperature
        3. 9.2.1.3 Application Curves
      2. 9.2.2 Fixed 5-V Output for USB-Type Applications
        1. 9.2.2.1 Design Requirements
        2. 9.2.2.2 Detailed Design Procedure
        3. 9.2.2.3 Application Curves
      3. 9.2.3 Fixed 3.3-V Output
        1. 9.2.3.1 Design Requirements
        2. 9.2.3.2 Detailed Design Procedure
        3. 9.2.3.3 Application Curves
      4. 9.2.4 Adjustable Output
        1. 9.2.4.1 Design Requirements
        2. 9.2.4.2 Detailed Design Procedure
        3. 9.2.4.3 Application Curves
    3. 9.3 Do's and Don't's
  10. 10Power Supply Recommendations
  11. 11Layout
    1. 11.1 Layout Guidelines
    2. 11.2 Layout Example
  12. 12Device and Documentation Support
    1. 12.1 Device Support
      1. 12.1.1 Third-Party Products Disclaimer
    2. 12.2 Documentation Support
      1. 12.2.1 Related Documentation
    3. 12.3 Related Links
    4. 12.4 Community Resources
    5. 12.5 Trademarks
    6. 12.6 Electrostatic Discharge Caution
    7. 12.7 Glossary
  13. 13Mechanical, Packaging, and Orderable Information

封装选项

请参考 PDF 数据表获取器件具体的封装图。

机械数据 (封装 | 引脚)
  • RNL|22
散热焊盘机械数据 (封装 | 引脚)
订购信息

Application Curves

The following characteristics apply only to the circuit of Fixed 5-V Output for USB-Type Applications. These parameters are not tested and represent typical performance only. Unless otherwise stated, the following conditions apply: VIN = 12 V, TA = 25°C. For the purpose of offering the more information to the designer, information for the application with FPWM pin high (FPWM mode) and FPWM pin low (AUTO mode) is included, although the schematic shows the application running specifically in FPWM mode. The mode is specified under each following graph.

LM53625-Q1 LM53635-Q1 D002_SNVSAA7.gif
VOUT = 5 V AUTO
Figure 25. Efficiency
LM53625-Q1 LM53635-Q1 D003_SNVSAA7.gif
VOUT = 5 V AUTO
Figure 27. Load and Line Regulation
LM53625-Q1 LM53635-Q1 D015_SNVSAA7.gif
VOUT = 5 V AUTO IOUT = 0 A
Figure 29. Input Supply Current (includes Leakage Current of the Capacitor)
LM53625-Q1 LM53635-Q1 D022_SNVSAA7.gif
VOUT = 5 V
Figure 31. Dropout for –3% Regulation
LM53625-Q1 LM53635-Q1 D018_SNVSAA7.gif
VOUT = 5 V AUTO
Figure 33. Switching Frequency vs Load Current
LM53625-Q1 LM53635-Q1 D005_SNVSAA7.gif
VOUT = 5 V L = 2.2µH
Figure 35. Output Current Level Limit Before Overcurrent Protection
LM53625-Q1 LM53635-Q1 load_trans_Vin12V0_Vout5V0SS_0to3A5_1Aus_FPWM.png
FPWM VOUT = 5 V L = 2.2 µH
COUT = 3 × 22 µF IOUT = 0 A to 3.5 A TR = TF = 1µs
Figure 37. Load Transient
LM53625-Q1 LM53635-Q1 D006_SNVSAA7.gif
VOUT = 5 V FPWM
Figure 26. Efficiency
LM53625-Q1 LM53635-Q1 D007_SNVSAA7.gif
VOUT = 5 V FPWM
Figure 28. Load and Line Regulation
LM53625-Q1 LM53635-Q1 D017_SNVSAA7.gif
VOUT = 5 V
Figure 30. Load Current for PFM-to-PWM transition
LM53625-Q1 LM53635-Q1 D021_SNVSAA7.gif
VOUT = 5 V
Figure 32. Dropout for ≥ 1.85 MHz
LM53625-Q1 LM53635-Q1 D001_SNVSAA7.gif
VOUT = 5 V FPWM
Figure 34. Switching Frequency vs Input Voltage
LM53625-Q1 LM53635-Q1 load_trans_Vin12V0_Vout5V0SS_10m to3A5_1Aus_Auto_RT.png
AUTO VOUT = 5 V L = 2.2 µH
COUT = 3 × 22 µF IOUT = 10 mA to
3.5 A
TR = TF = 1 µs
Figure 36. Load Transients