ZHCSHU0C March   2018  – October 2021 LM51501-Q1

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 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  Enable (EN Pin)
      2. 8.3.2  High Voltage VCC Regulator (PVCC, AVCC Pin)
      3. 8.3.3  Power-On Voltage Selection (VSET Pin)
      4. 8.3.4  Switching Frequency (RT Pin)
      5. 8.3.5  Clock Synchronization (SYNC Pin in SS Configuration)
      6. 8.3.6  Current Sense, Slope Compensation, and PWM (CS Pin)
      7. 8.3.7  Current Limit (CS Pin)
      8. 8.3.8  Feedback and Error Amplifier (COMP Pin)
      9. 8.3.9  Automatic Wake-Up and Standby
      10. 8.3.10 Boost Status Indicator (STATUS Pin)
      11. 8.3.11 Maximum Duty Cycle Limit and Minimum Input Supply Voltage
      12. 8.3.12 MOSFET Driver (LO Pin)
      13. 8.3.13 Thermal Shutdown
    4. 8.4 Device Functional Modes
      1. 8.4.1 Shutdown Mode
      2. 8.4.2 Standby Mode
      3. 8.4.3 Wake-Up Mode
        1. 8.4.3.1 Start-Stop Configuration (SS Configuration)
        2. 8.4.3.2 Emergency-Call Configuration (EC Configuration)
  9. 9 Application and Implementation
    1. 9.1 Application Information
      1. 9.1.1 Bypass Switch / Disconnection Switch Control
      2. 9.1.2 Loop Response
    2. 9.2 Typical Application
      1. 9.2.1 Design Requirements
      2. 9.2.2 Detailed Design Procedure
        1. 9.2.2.1  Custom Design With WEBENCH® Tools
        2. 9.2.2.2  RSET Resistor
        3. 9.2.2.3  RT Resistor
        4. 9.2.2.4  Inductor Selection (LM)
        5. 9.2.2.5  Current Sense (RS)
        6. 9.2.2.6  Slope Compensation Ramp (RSL)
        7. 9.2.2.7  Output Capacitor (COUT)
        8. 9.2.2.8  Loop Compensation Component Selection and Maximum ESR
        9. 9.2.2.9  PVCC Capacitor, AVCC Capacitor, and AVCC Resistor
        10. 9.2.2.10 VOUT Filter (CVOUT, RVOUT)
        11. 9.2.2.11 Input Capacitor
        12. 9.2.2.12 MOSFET Selection
        13. 9.2.2.13 Diode Selection
        14. 9.2.2.14 Efficiency Estimation
      3. 9.2.3 Application Curves
    3. 9.3 System Examples
      1. 9.3.1 Lower Standby Threshold in SS Configuration
      2. 9.3.2 Dithering Using Dither Enabled Device
      3. 9.3.3 Clock Synchronization With LM5140
      4. 9.3.4 Dynamic Frequency Change
      5. 9.3.5 Dithering Using an External Clock
  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 第三方产品免责声明
      2. 12.1.2 Development Support
        1. 12.1.2.1 Custom Design With WEBENCH® Tools
    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 Electrostatic Discharge Caution
    6. 12.6 术语表
  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)
  • RUM|16
散热焊盘机械数据 (封装 | 引脚)
订购信息

7.5 Electrical Characteristics

Typical values correspond to TJ = 25°C. Minimum and maximum limits apply over TJ = –40°C to 125°C. Unless otherwise stated, VVOUT = 9.5 V, RT = 9.09 kΩ
PARAMETERTEST CONDITIONSMINTYPMAXUNIT
SUPPLY CURRENT
ISHUTDOWN(VOUT)VOUT shutdown currentVVOUT = 12 V, VEN = 0 V512µA
ISTANDBY(VOUT)VOUT standby current (PVCC in regulation, STATUS is low)VVOUT = 12 V, VEN = 3.3 V, RSET = 90.9 kΩ1525µA
IWAKEUP(VOUT)VOUT operating current (exclude the current into the RT resistor)VVOUT = 11.5 V, VEN = 2.5 V, nonswitching, RT = 9.09 kΩ1.22.0mA
ISHUTDOWN(VIN)VIN shutdown currentVVIN = 12 V, VEN = 0 V0.10.5µA
ISTANDBY(VIN)VIN standby currentVVIN = 12 V, VEN = 3.3 V, RSET = 29.4 kΩ0.10.5µA
IWAKEUP(VIN)VIN operating currentVVIN = 11.5 V, VEN = 2.5V, nonswitching, RT = 9.09 kΩ3045µA
VCC REGULATOR
VVCC-REG-NOLOADPVCC regulationVVOUT = 6.0 V, no load, wake-up mode4.7555.25V
VVCC-REG-FULLLOADPVCC regulationVVOUT = 5.0 V, IPVCC = 70 mA4.54.8V
VVCC-UVLO-RISINGAVCC UVLO thresholdAVCC rising4.14.34.5V
VVCC-UVLO-FALLINGAVCC UVLO thresholdAVCC falling3.94.14.3V
VVCC-UVLO-HYSAVCC UVLO hysteresis0.2V
IVCC-CLPVCC sourcing current limitVPVCC = 0 V, wake-up mode75mA
ENABLE
VEN-RISINGEnable thresholdEN rising1.72V
VEN-FALLINGEnable thresholdEN falling11.3V
IENEN bias currentVEN = 42 V100nA
6.0V SETTING
VVOUT-REGVOUT regulation targetRSET = 29.4 kΩ or 90.9 kΩ5.886.006.12V
VVOUT-WAKEUPVOUT wake-up threshold (VVOUT-REG + 3%)RSET = 29.4 kΩ or 90.9 kΩ, VOUT falling6.066.186.30V
VVOUT-STANDBY1VOUT standby threshold (VVOUT-REG + 6%, EC config)RSET = 90.9 kΩ, VOUT rising6.236.366.49V
VVOUT-STATUS-OFFVOUT status off threshold (VVOUT-REG + 12%, EC config)RSET = 90.9 kΩ, VOUT rising6.596.726.85V
VVOUT-STANDBY2VOUT standby threshold (VVOUT-REG + 24%, SS config)RSET = 29.4 kΩ, VOUT rising7.307.447.54V
VVIN-STANDBYVIN standby threshold (VVOUT-WAKEUP + 1.0 V, SS config)RSET = 29.4 kΩ, VIN rising7.047.187.32V
6.5V SETTING
VVOUT-REGVOUT regulation targetRSET = 19.1 kΩ or 71.5 kΩ6.376.506.63V
VVOUT-WAKEUPVOUT wake-up threshold (VVOUT-REG + 3%)RSET = 19.1 kΩ or 71.5 kΩ, VOUT falling6.566.706.83V
VVOUT-STANDBY1VOUT standby threshold (VVOUT-REG + 6%, EC config)RSET = 71.5 kΩ, VOUT rising6.756.897.03V
VVOUT-STATUS-OFFVOUT status off threshold (VVOUT-REG + 12%, EC config)RSET = 71.5 kΩ, VOUT rising7.137.287.43V
VVOUT-STANDBY2VOUT standby threshold (VVOUT-REG + 24%, SS config)RSET = 19.1 kΩ, VOUT rising7.928.068.16V
VVIN-STANDBYVIN standby threshold (VVOUT-WAKEUP + 1.0 V, SS config)RSET = 19.1 kΩ, VIN rising7.547.707.85V
9.5V SETTING
VVOUT-REGVOUT regulation targetRSET = 9.53 kΩ or 54.9 kΩ9.319.509.69V
VVOUT-WAKEUPVOUT wake-up threshold (VVOUT-REG + 3%)RSET = 9.53 kΩ or 54.9 kΩ, VOUT falling9.599.799.98V
VVOUT-STANDBY1VOUT standby threshold (VVOUT-REG + 6%, EC config)RSET = 54.9 kΩ, VOUT rising9.8710.0710.27V
VVOUT-STATUS-OFFVOUT status off threshold (VVOUT-REG + 12%, EC config)RSET = 54.9 kΩ, VOUT rising10.4310.6410.85V
VVOUT-STANDBY2VOUT standby threshold (VVOUT-REG + 24%, SS config)RSET = 9.53 kΩ, VOUT rising11.5511.7811.95V
VVIN-STANDBYVIN standby threshold (VVOUT-WAKEUP + 1.0 V, SS mode)RSET = 9.53 kΩ, VIN rising10.5710.7911.00V
11.5V SETTING
VVOUT-REGVOUT regulation targetRSET = GND or 41.2 kΩ11.2711.5011.73V
VVOUT-WAKEUPVOUT wake-up threshold (VVOUT-REG + 3%)RSET = GND or 41.2 kΩ, VOUT falling11.6111.8512.08V
VVOUT-STANDBY1VOUT standby threshold (VVOUT-REG + 6%, EC config)RSET = 41.2 kΩ, VOUT rising11.9512.1912.43V
VVOUT-STATUS-OFFVOUT status off threshold (VVOUT-REG + 12%, EC config)RSET = 41.2 kΩ, VOUT rising12.6212.8813.14V
VVOUT-STANDBY2VOUT standby threshold (VVOUT-REG + 24%, SS config)RSET = GND, VOUT rising13.9814.2614.55V
VVIN-STANDBYVIN standby threshold (VVOUT-WAKEUP + 1.0 V, SS config)RSET = GND, VIN rising12.5212.8513.10V
RT
VRT-REGRT regulation voltage1.2V
CLOCK SYNCHRONIZATION
VSYNC-RISINGSYNC rising threshold2.02.4V
VSYNC-FALLINGSYNC falling threshold0.41.5V
PULSE WIDTH MODULATION AND OSCILLATOR
FSW1Switching frequencyRT = 93.1 kΩ204239270kHz
FSW2Switching frequencyRT = 9.09 kΩ210023002500kHz
FSW3Switching frequencyRT = 9.09 kΩ, FSYNC = 2.0 MHz2000kHz
TON-MINForced minimum on timeSS config, VCOMP = 0 V 305070ns
DMINMinimum duty cycle limit (EC config)RT = 9.09 kΩ, VVIN = 1.5 V, VVOUT = 6.5 V, VCOMP = 0 V59%
RT = 93.1 kΩ, VVIN = 7.6 V, VVOUT = 9.5 V, VCOMP = 0 V16%
DMAXMaximum duty cycle limitSS config, RT = 9.09 kΩ838791%
EC config, RT = 93.1 kΩ838793%
CURRENT SENSE
VCLTHCurrent Limit threshold (CS-AGND)(1)VVIN = 7.13 V, VVOUT = 9.5 V at 25% DC102120138mV
VVIN = 4.75 V, VVOUT = 9.5 V at 50% DC102120138mV
VVIN = 2.38 V, VVOUT = 9.5 V at 75% DC102120138mV
ERROR AMPLIFIER
GmTransconductance2mA/V
COMP souring currentVCOMP = 0 V312µA
COMP sinking currentVCOMP = 1.5 V120µA
COMP clamp voltage2.42.6V
COMP to PWM offset0.3V
STATUS
Low-state voltage drop1-mA sinking0.1V
STATUS rise to LO delay5-kΩ pullup to 5 V456µs
MOSFET DRIVER
High-state voltage drop50-mA sinking0.075V
Low-state voltage drop50mA sourcing0.055V
THERMAL SHUTDOWN (TSD)
Thermal shutdown thresholdTemperature rising175°C
Thermal shutdown hysteresis15°C
(1) VCL at the current limit comparator input is 10 × VCLTH