Datasheet LT4423 (Analog Devices) - 5
| 制造商 | Analog Devices |
| 描述 | 28V, 2A Ideal Diode and Load Switch |
| 页数 / 页 | 18 / 5 — Data Sheet. LT4423. PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS. Figure … |
| 文件格式/大小 | PDF / 456 Kb |
| 文件语言 | 英语 |
Data Sheet. LT4423. PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS. Figure 3. Pin Configurations. Table 3. Pin Descriptions. PIN
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Data Sheet LT4423 PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS Figure 3. Pin Configurations Table 3. Pin Descriptions PIN NAME DESCRIPTION
Positive Input Supply and Ideal Diode Anode. Connect the IN pin to the power source that supplies power to the load. The exposed pad is also connected to IN. Use a copper plane connected to the exposed pad for thermal management (see Applications 1, 2, 3, 11 IN Information – Layout and Thermal Considerations for sizing details). Bypass IN with a 0.1µF or larger capacitor to suppress undesired reverse turn-off in applications with load transient ringing. Shutdown Control Input. Driving SHDN low disables the ideal diode and load switch 4 SHDN between IN and OUT, placing the part in a low quiescent current mode. SHDN may be connected to IN for automatic turn-on applications. Do not leave SHDN open. 5, 6 GND Device Ground. Open-Drain Status Output. When IN or OUT is greater than 1.9V, STATUS pulls low when 1) SHDN is pulled low, 2) when OUT exceeds IN by approximately 20mV, or 3) 7 STATUS when thermal protection circuitry is active. Connect STATUS to a pull-up resistor connected to OUT or an external supply. Leave STATUS open or connect to GND if not used. Ideal Diode Cathode Output. In diode-OR applications using multiple LT4423s, connect 8, 9, 10 OUT the common output node to OUT. Bypass OUT with a 0.1µF or larger capacitor to suppress undesired reverse turn-off in applications with load transient ringing.
analog.com
Rev. 0 5 of 18 Document Outline Features Applications General Description Simplified Application Diagram TABLE OF CONTENTS Revision History Specifications Absolute Maximum Ratings Pin Configurations and Function Descriptions Typical Performance Characteristics Block Diagram Theory of Operation Applications Information USB PD 3.0 and Back-Up Battery Supply Automatic Power Path Control 5V Power Ride-Through High-Voltage Load Switch with Load Sharing and Undervoltage Lockout Layout and Thermal Considerations Typical Applications High-Load Current Application Reverse Input Voltage Protection Related parts Outline Dimensions Ordering Guide
Data Sheet LT4423 PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS Figure 3. Pin Configurations Table 3. Pin Descriptions PIN NAME DESCRIPTION
Positive Input Supply and Ideal Diode Anode. Connect the IN pin to the power source that supplies power to the load. The exposed pad is also connected to IN. Use a copper plane connected to the exposed pad for thermal management (see Applications 1, 2, 3, 11 IN Information – Layout and Thermal Considerations for sizing details). Bypass IN with a 0.1µF or larger capacitor to suppress undesired reverse turn-off in applications with load transient ringing. Shutdown Control Input. Driving SHDN low disables the ideal diode and load switch 4 SHDN between IN and OUT, placing the part in a low quiescent current mode. SHDN may be connected to IN for automatic turn-on applications. Do not leave SHDN open. 5, 6 GND Device Ground. Open-Drain Status Output. When IN or OUT is greater than 1.9V, STATUS pulls low when 1) SHDN is pulled low, 2) when OUT exceeds IN by approximately 20mV, or 3) 7 STATUS when thermal protection circuitry is active. Connect STATUS to a pull-up resistor connected to OUT or an external supply. Leave STATUS open or connect to GND if not used. Ideal Diode Cathode Output. In diode-OR applications using multiple LT4423s, connect 8, 9, 10 OUT the common output node to OUT. Bypass OUT with a 0.1µF or larger capacitor to suppress undesired reverse turn-off in applications with load transient ringing.
analog.com
Rev. 0 5 of 18 Document Outline Features Applications General Description Simplified Application Diagram TABLE OF CONTENTS Revision History Specifications Absolute Maximum Ratings Pin Configurations and Function Descriptions Typical Performance Characteristics Block Diagram Theory of Operation Applications Information USB PD 3.0 and Back-Up Battery Supply Automatic Power Path Control 5V Power Ride-Through High-Voltage Load Switch with Load Sharing and Undervoltage Lockout Layout and Thermal Considerations Typical Applications High-Load Current Application Reverse Input Voltage Protection Related parts Outline Dimensions Ordering Guide