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

6.6 System Characteristics

The following spec table entries are specified by design providing the component values in Figure 29 are used. These parameters are not verified by production testing. Minimum (MIN) and maximum (MAX) values apply over the full operating ambient temperature range (–40°C ≤ TA ≤ 85°C) and over the VIN range of 2.7 V to 5.5 V unless otherwise specified. L = 0.47 µH, DCR = 50 mΩ, CIN = 10 µF, 6.3 V, 0603 (1608), COUT = 4.7 µF, 6.3 V, 0603 (1608).
PARAMETERTEST CONDITIONSMINTYPMAXUNIT
TCON TR VOUT step rise time from 0.6 V to 3.4 V (to reach 3.26 V) VIN = 3.6 V, VCON = 0.24 V to 1.36 V,
VCON TR = 1 µs, RLOAD = 10 Ω,
–30°C ≤ TA ≤ 85°C		 25 µs
VIN = 3.6 V, VCON = 0.24 V to 1.36 V,
VCON TR = 1 µs, RLOAD = 10 Ω		 30
VOUT step fall time from 3.4 V to 0.6 V
(to reach 0.74 V)		 VIN = 3.6 V, VCON = 1.36 V to 0.24 V,
VCON TF = 1 µs, RLOAD = 10 Ω,
–30°C ≤ TA ≤ 85°C		 25
VIN = 3.6 V, VCON = 1.36 V to 0.24 V,
VCON TF = 1 µs, RLOAD = 10 Ω		 30
D Maximum Duty cycle 100%
IOUT Maximum output current capability 2.7 V ≤ VIN ≤ 5.5 V, 0.24 V ≤ VCON ≤ 1.36 V 750 mA
CCON VCON input capacitance VCON = 1 V, Test frequency = 100 KHz 5 10 pF
Linearity Linearity in control range 0.24 V to 1.36 V Monotronic in nature(1) –3% 3%
–50 +50 mV
TON Turnon time (time for output to reach 95% final value after Enable low-to-high transition) EN = Low-to-High, VIN = 4.2 V, VOUT = 3.4 V,
IOUT = < 1 mA, COUT = 4.7 µF, –30°C ≤ TA ≤ 85°C		 50 µs
EN = Low-to-High, VIN = 4.2 V, VOUT = 3.4 V,
IOUT = < 1 mA, COUT = 4.7 µF		 55
η Efficiency VIN = 3.6 V, VOUT = 0.8 V, IOUT = 10 mA,
Eco-mode		 75%
VIN = 3.6 V, VOUT = 1.8 V, IOUT = 200 mA,
PWM mode		 90%
VIN = 3.9 V, VOUT = 3.3 V, IOUT = 500 mA,
PWM mode		 95%
LINE TR Line transient response VIN = 3.6 V to 4.2 V, TR = TF = 10 µs,
IOUT = 100 mA, VOUT = 0.8 V		 50 mVpk
LOAD TR Load transient response VIN = 3.1 V/3.6 V/4.5 V, VOUT = 0.8 V,
IOUT = 50 mA to 150 mA, TR = TF = 0.1 µs		 50
(1) Linearity limits are ±3% or ±50 mV whichever is larger.