ZHCSTL8F April   2007  – November 2023 LM25116

PRODUCTION DATA  

  1.   1
  2. 1 特性
  3. 2 应用
  4. 3 说明
  5. 4 Pin Configuration and Functions
  6. 5 Specifications
    1. 5.1 Absolute Maximum Ratings
    2. 5.2 ESD Ratings
    3. 5.3 Recommended Operating Conditions
    4. 5.4 Thermal Information
    5. 5.5 Electrical Characteristics
    6. 5.6 Switching Characteristics
    7. 5.7 Typical Characteristics
  7. 6 Detailed Description
    1. 6.1 Overview
    2. 6.2 Functional Block Diagram
    3. 6.3 Feature Description
      1. 6.3.1 High-Voltage Start-Up Regulator
      2. 6.3.2 Enable
      3. 6.3.3 UVLO
      4. 6.3.4 Oscillator and Sync Capability
      5. 6.3.5 Error Amplifier and PWM Comparator
      6. 6.3.6 Ramp Generator
      7. 6.3.7 Current Limit
      8. 6.3.8 HO Output
      9. 6.3.9 Thermal Protection
    4. 6.4 Device Functional Modes
      1. 6.4.1 Soft Start and Diode Emulation
  8. 7 Application and Implementation
    1. 7.1 Application Information
    2. 7.2 Typical Application
      1. 7.2.1 Design Requirements
      2. 7.2.2 Detailed Design Procedure
        1. 7.2.2.1  Timing Resistor
        2. 7.2.2.2  Output Inductor
        3. 7.2.2.3  Current Sense Resistor
        4. 7.2.2.4  Ramp Capacitor
        5. 7.2.2.5  Output Capacitors
        6. 7.2.2.6  Input Capacitors
        7. 7.2.2.7  VCC Capacitor
        8. 7.2.2.8  Bootstrap Capacitor
        9. 7.2.2.9  Soft Start Capacitor
        10. 7.2.2.10 Output Voltage Divider
        11. 7.2.2.11 UVLO Divider
        12. 7.2.2.12 MOSFETs
        13. 7.2.2.13 MOSFET Snubber
        14. 7.2.2.14 Error Amplifier Compensation
        15. 7.2.2.15 Comprehensive Equations
          1. 7.2.2.15.1 Current Sense Resistor and Ramp Capacitor
          2. 7.2.2.15.2 Modulator Transfer Function
          3. 7.2.2.15.3 Error Amplifier Transfer Function
      3. 7.2.3 Application Curves
    3. 7.3 Power Supply Recommendations
    4. 7.4 Layout
      1. 7.4.1 Layout Guidelines
      2. 7.4.2 Layout Example
  9. 8 Device and Documentation Support
    1. 8.1 接收文档更新通知
    2. 8.2 支持资源
    3. 8.3 Trademarks
    4. 8.4 静电放电警告
    5. 8.5 术语表
  10. 9 Revision History
  11. 10Mechanical, 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

7.2.2 Detailed Design Procedure

The bill of materials for this design are listed in Table 7-1.

Simplified equations are used as a general guideline for the design method. Comprehensive equations are provided in Section 7.2.2.15.

Table 7-1 Bill of Materials
IDPART NO.TYPESIZEPARAMETERSQTYVENDOR
C1, C2, C14C2012X7R1E105KCapacitor, Ceramic08051 µF, 25 V, X7R3TDK
C3VJ0603Y103KXAATCapacitor, Ceramic06030.01 µF, 50 V, X7R1Vishay
C4VJ0603A271JXAATCapacitor, Ceramic0603270 pF, 50 V, COG, 5%1Vishay
C5, C15VJ0603Y101KXAT
W1BC		Capacitor, Ceramic0603100 pF, 50 V, X7R2Vishay
C6VJ0603Y332KXXATCapacitor, Ceramic06033300 pF, 25 V, X7R1Vishay
C7—Capacitor, Ceramic0603Not used0
C8, C9,
C10, C11		C4532X7R2A225MCapacitor, Ceramic18122.2 µF, 100 V X7R4TDK
C12C3225X7R2A105MCapacitor, Ceramic12101 µF, 100 V X7R1TDK
C13C2012X7R2A104MCapacitor, Ceramic08050.1 µF, 100 V X7R1TDK
C16, C17, C18, C19, C20C4532X6S0J107MCapacitor, Ceramic1812100 µF, 6.3 V, X6S, 105°C5TDK
C21, C22—Capacitor, TantalumD CaseNot used0—
C23—Capacitor, Ceramic0805Not used0—
D1CMPD2003Diode, SwitchingSOT-23200 mA, 200 V1Central Semi
D2CMPD2003Diode, SwitchingSOT-23Not used0Central Semi
JMP1—Connector, Jumper—2-pin sq. post1—
L1HC2LP-6R0Inductor—6 µH, 16.5 A1Cooper
P1-P41514-2Turret terminal.090” dia.—4Keystone
TP1-TP55012Test point.040” dia.—5Keystone
Q1, Q2Si7850DPN-CH MOSFETSO-8 Power PAK10.3 A, 60 V2Vishay Siliconix
R1CRCW06031023FResistor0603102 kΩ, 1%1Vishay
R2CRCW06032102FResistor060321 kΩ, 1%1Vishay
R3CRCW06033741FResistor06033.74 kΩ, 1%1Vishay
R4CRCW06031211FResistor06031.21 kΩ, 1%1Vishay
R5—Resistor0603Not used0—
R6, R7CRCW06030R0JResistor06030 Ω2Vishay
R8CRCW0603103JResistor060310 kΩ, 5%1Vishay
R9CRCW06031242FResistor060312.4 kΩ, 1%1Vishay
R10CRCW0603183JResistor060318 kΩ, 5%1Vishay
R11LRC-LRF2010-01-R010-FResistor20100.01 Ω, 1%1IRC
R12—Resistor0603Not used0—
R13CRCW0603105JResistor06031 MΩ, 5%1Vishay
R14—Resistor1206Not used0—
U1LM25116MHSynchronous buck controllerHTSSOP-20—1TI
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