ZHCSJH5 March   2019 TLV61048

ADVANCE INFORMATION for pre-production products; subject to change without notice.  

  1. 1 特性
  2. 2 应用
  3. 3 说明
    1.     Device Images
      1.      简化原理图
  4. 4 修订历史记录
  5. 5 Pin Configuration and Functions
    1.     Pin Functions
  6. 6 Specifications
    1. 6.1 Absolute Maximum Ratings
    2. 6.2 ESD Ratings
    3. 6.3 Recommended Operating Conditions
    4. 6.4 Thermal Information
    5. 6.5 Electrical Characteristics
  7. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 Undervoltage Lockout
      2. 7.3.2 Enable and Disable
      3. 7.3.3 Soft Start
      4. 7.3.4 Frequency Select (FREQ)
    4. 7.4 Device Functional Modes
      1. 7.4.1 PWM Mode
      2. 7.4.2 PFM Mode
  8. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Applications
      1. 8.2.1 12-V Output Boost Converter With External Bias
        1. 8.2.1.1 Design Requirements
        2. 8.2.1.2 Detailed Design Procedure
          1. 8.2.1.2.1 Programming the Output Voltage
          2. 8.2.1.2.2 Inductor Selection
          3. 8.2.1.2.3 Input and Output Capacitor Selection
        3. 8.2.1.3 Application Curves
      2. 8.2.2 15-V Output Boost Converter
        1. 8.2.2.1 Design Requirements
        2. 8.2.2.2 Detailed Design Procedure
          1. 8.2.2.2.1 Inductor Selection
          2. 8.2.2.2.2 Input and Output Capacitor Selection
  9. 9 Power Supply Recommendations
  10. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Example
  11. 11器件和文档支持
    1. 11.1 器件支持
      1. 11.1.1 第三方米6体育平台手机版_好二三四免责声明
    2. 11.2 接收文档更新通知
    3. 11.3 社区资源
    4. 11.4 商标
    5. 11.5 静电放电警告
    6. 11.6 术语表
  12. 12机械、封装和可订购信息

6.5 Electrical Characteristics

TA = –40°C to 85°C, VIN = 3.3 V. Typical values are at TA = 25°C, unless otherwise noted.
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
POWER SUPPLY
VIN Input voltage range 2.6 5.5 V
VIN_UVLO Under voltage lockout threshold VIN rising 2.55 2.61 V
VIN falling 2.3 2.4
VIN_HYS VIN UVLO hysteresis 150 mV
IQ_VIN Quiescent current into VIN pin IC enabled, no load, no switching 100 µA
ISD Shutdown current into VIN pin IC disabled, VIN = 2.6 V to 5.5 V, TA = 25°C 1.0 µA
OUTPUT
VOUT Output voltage range 3.3 15 V
VREF Feedback voltage PWM mode, TJ=-40°C to 125°C 0.78 0.8 0.82 V
PFM mode, TA=25°C 0.81 V
IFB_LKG Leakage current into FB pin TA = 25°C 50 nA
ISW_LKG Leakage current into SW pin IC disabled, SW = 5.5V 500 nA
POWER SWITCH
RDS(on) Low-side MOSFET on resistance Vin = 3.3, Vout = 12V 85 mΩ
fSW Switching frequency Default, SW = 1.5V 480 550 620 kHz
Default, SW = 2.6V 1020 1150 1280 kHz
tOFF_min Min. off time 600kHz, SW = 1.5V 130 ns
ILIM_SW Peak switch current limit 600kHz, VIN = 3.3V 3.8 4.7 5.6 A
tSTARTUP Startup time 2 ms
LOGIC INTERFACE
VEN_H EN Logic high threshold 1.2 V
VEN_L EN Logic low threshold 0.4 V
REN EN Pull Down Resistor 1 MΩ
RFREQ FREQ pull up resistance 800 kΩ
VFREQ_H FREQ logic high threshold 1.2 V
VFREQ_L FREQ logic low threshold 0.4 V
PROTECTION
TSD Thermal shutdown threshold TJ rising 150 °C
TSD_HYS Thermal shutdown hysteresis TJ falling below TSD 20 °C
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