ZHCSLY9A October 2020 – December 2020 LM7310
PRODUCTION DATA
- 1 特性
- 2 应用
- 3 说明
- 4 Revision History
- 5 Pin Configuration and Functions
- 6 Specifications
-
7 Detailed Description
- 7.1 Overview
- 7.2 Functional Block Diagram
- 7.3
Feature Description
- 7.3.1 Input Reverse Polarity Protection
- 7.3.2 Undervoltage Protection (UVLO & UVP)
- 7.3.3 Overvoltage Lockout (OVLO)
- 7.3.4 Inrush Current control and Fast-trip
- 7.3.5 Analog Load Current Monitor Output
- 7.3.6 Reverse Current Protection
- 7.3.7 Overtemperature Protection (OTP)
- 7.3.8 Fault Response
- 7.3.9 Power Good Indication (PG)
- 7.4 Device Functional Modes
- 8 Application and Implementation
- 9 Power Supply Recommendations
- 10Layout
- 11Device and Documentation Support
- 12Mechanical, Packaging, and Orderable Information
7.3.2 Undervoltage Protection (UVLO & UVP)
The LM73100 implements undervoltage protection on IN in case the applied voltage becomes too low for the system or device to properly operate. The undervoltage protection has a default lockout threshold of VUVP which is fixed internally. Apart from that, the UVLO comparator on the EN/UVLO pin allows the undervoltage Protection threshold to be externally adjusted to a user defined value. The Figure 7-1 and Equation 1 below show how a resistor divider can be used to set the UVLO set point for a given voltage supply.
Figure 7-1 Adjustable Undervoltage
ProtectionEquation 1. 