SNVS118F december 1999 – may 2023 LM2594 , LM2594HV
PRODUCTION DATA
- 1
- 1 Features
- 2 Applications
- 3 Description
- 4 Revision History
- 5 Description (continued)
- 6 Pin Configuration and Functions
-
7 Specifications
- 7.1 Absolute Maximum Ratings
- 7.2 ESD Ratings
- 7.3 Recommended Operating Conditions
- 7.4 Thermal Information
- 7.5 Electrical Characteristics – 3.3 V
- 7.6 Electrical Characteristics – 5 V
- 7.7 Electrical Characteristics – 12 V
- 7.8 Electrical Characteristics – Adjustable
- 7.9 Electrical Characteristics – All Output Voltage Versions
- 7.10 Typical Characteristics
- 8 Detailed Description
- 9 Application and Implementation
- 10Device and Documentation Support
- 11Mechanical, Packaging, and Orderable Information
8.3.4 Inverting Regulator Shutdown Methods
To use the ON/OFF pin in a standard buck configuration is simple; pull it below 1.3 V (at 25°C, referenced to ground) to turn regulator ON and pull it above 1.3 V to shut the regulator OFF. With the inverting configuration, some level shifting is required, because the ground pin of the regulator is no longer at ground, but is now setting at the negative output voltage level. Two different shutdown methods for inverting regulators are shown in Figure 8-7 and Figure 8-8.
Figure 8-7 Inverting Regulator Ground Referenced Shutdown
Figure 8-8 Inverting Regulator Ground Referenced Shutdown Using Opto Device