ZHCSH22C January   2009  – November 2017 LM3241

PRODUCTION DATA.  

  1. 1 特性
  2. 2 应用
  3. 3 说明
    1.     Device Images
      1.      典型应用
  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
    6. 6.6 System Characteristics
    7. 6.7 Typical Characteristics
  7. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 Circuit Operation
      2. 7.3.2 Internal Synchronization Rectification
      3. 7.3.3 Current Limiting
      4. 7.3.4 Dynamically Adjustable Output Voltage
      5. 7.3.5 Thermal Overload Protection
      6. 7.3.6 Soft Start
    4. 7.4 Device Functional Modes
      1. 7.4.1 PWM Mode Operation
      2. 7.4.2 Eco-mode™ Operation
      3. 7.4.3 Shutdown Mode
  8. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Application
      1. 8.2.1 Design Requirements
      2. 8.2.2 Detailed Design Procedure
        1. 8.2.2.1 Setting the Output Voltage
        2. 8.2.2.2 Inductor Selection
          1. 8.2.2.2.1 Method 1
          2. 8.2.2.2.2 Method 2
        3. 8.2.2.3 Capacitor Selection
      3. 8.2.3 Application Curves
  9. 9 Power Supply Recommendations
  10. 10Layout
    1. 10.1 Layout Guidelines
      1. 10.1.1 DSBGA Package Assembly and Use
      2. 10.1.2 Board Layout Considerations
    2. 10.2 Layout Example
  11. 11器件和文档支持
    1. 11.1 文档支持
      1. 11.1.1 相关文档
    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 Glossary
  12. 12机械、封装和可订购信息

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

6.5 Electrical Characteristics

All voltages are with respect to the potential at the GND pins. Minimum (MIN) and maximum (MAX) limits are specified by design, test, or statistical analysis. For performance over the input voltage range and closed-loop results, see the curves in the Typical Characteristics section.
PARAMETERTEST CONDITIONSMINTYPMAXUNIT
VFB,MIN Feedback voltage at minimum setting PWM mode, VCON = 0.24 V 0.6 V
PWM mode, open loop conditions at VIN = 3.6 V, VCON = 0.24 V 0.58 0.62
VFB,MAX Feedback voltage at maximum setting PWM mode, VCON = 1.36 V, VIN = 3.9 V 3.4 V
PWM mode, open loop conditions at VIN = 3.6 V, VCON = 1.36 V, VIN = 3.9 V 3.332 3.468
ISHDN Shutdown supply current EN = SW = VCON = 0 V(1) 0.1 µA
open loop conditions at VIN = 3.6 V,
EN = SW = VCON = 0 V(1)		 2
IQ_PWM PWM mode quiescent current PWM mode, No switching(2), VCON = 0 V,
FB = 1 V		 620 µA
PWM mode, open loop conditions at VIN = 3.6 V, No switching(2), VCON = 0 V, FB = 1 V 750
IQ_ECO Eco-mode quiescent current Eco-mode, No switching(2),
VCON = 0.8 V, FB = 2.05 V		 45 µA
Eco-mode, open loop conditions at VIN = 3.6 V, No switching(2), VCON = 0.8 V, FB = 2.05 V 60
RDSON (P) Pin-pin resistance for PFET VIN = VGS = 3.6 V, ISW = 200 mA 160 mΩ
Open loop conditions at VIN = 3.6 V,
VIN = VGS = 3.6 V, ISW = 200 mA		 250
RDSON (N) Pin-pin resistance for NFET VIN = VGS = 3.6 V, ISW = −200 mA 110 mΩ
Open loop conditions at VIN = 3.6 V,
VIN = VGS = 3.6 V, ISW = −200 mA		 200
ILIM PFET switch peak current limit(3)   1450 mA
Open loop conditions at VIN = 3.6 V 1300 1600
FOSC Internal oscillator frequency 6 MHz
Open loop conditions at VIN = 3.6 V 5.7 6.3
VIH EN Logic high input threshold Open loop conditions at VIN = 3.6 V 1.2 V
VIL EN Logic low input threshold Open loop conditions at VIN = 3.6 V 0.4 V
Gain VCON to VOUT gain 0.24 V ≤ VCON ≤ 1.36 V 2.5 V/V
ICON VCON pin leakage current Open-loop mode, VCON = 1 V ±1 µA
(1) Shutdown current includes leakage current of PFET.
(2) IQ specified here is when the part is not switching under test mode conditions. For operating quiescent current at no load, see the curves in the Typical Characteristics section.
(3) Current limit is built-in, fixed, and not adjustable.