The LM5021NA-1/NOPB is an AC-DC current-mode PWM controller designed for offline applications, supporting both flyback and forward converter topologies. It features an ultra-low startup current of 25 µA, which minimizes power losses during the high-voltage startup phase. The device includes a skip cycle mode to reduce power consumption under light load conditions, making it suitable for energy-efficient applications. Key specifications include a maximum duty cycle limit of 80% and a peak gate driver current of 0.7 A. The LM5021NA-1/NOPB also incorporates essential protection features such as under-voltage lockout, cycle-by-cycle overcurrent protection, and hiccup mode for continuous overload protection. The oscillator frequency can be programmed with a single resistor, and it supports synchronization with external clock signals. This 8-pin PDIP package is rated for operation in a temperature range of -40 to 125 degrees Celsius, making it suitable for industrial power conversion applications, including smart meters and building automation systems.
Manufacturer: Texas Instruments
Win Source Part Number: 779296-LM5021NA-1/NO
Packaging: Tube
Mounting Style: Through Hole
Operating Temperature Range: -40°C ~ 125°C (TJ)
Package: 8-DIP (0.300", 7.62mm)
Output Isolation: Isolated
Internal Switch(s): No
Topology: Flyback, Forward
Voltage - Start Up: 20V
Duty Cycle: 80%
Frequency - Switching: Up to 1MHz
Fault Protection: Current Limiting, Over Load
Control Features: Frequency Control, Soft Start, Sync
Supply Voltage: 8 V ~ 30 V
Family Name: LM5021
Categories: Integrated Circuits (ICs)
Manufacturer Package: 8-PDIP
Alternative Parts (Cross-Reference): VIPER012XS; VIPER011XS; VIPER012XSTR; VIPER115LSTR;
Introduction Date: May 01, 2005
ECCN: EAR99
Country of Origin: Malaysia
Estimated EOL Date: 2031
Halogen Free: Compliant
Popularity: Medium
Fake Threat In the Open Market: 65 pct.
Supply and Demand Status: Balance
Converter Offline Flyback, Forward Topology Up to 1MHz 8-PDIP
IC OFFLINE SWITCH MULT TOP 8DIP
| Win Source Electronics | Quarktwin Technology Ltd. | Lingto Electronic Limited | |
|---|---|---|---|
| Product Category | AC-DC Converter Chips | AC-DC Converter Chips | AC-DC Converter Chips |
| Product Number | 779296-LM5021NA-1/NOPB | LM5021NA-1/NOPB | LM5021NA-1/NOPB |
| Product Name | PMIC - PMIC - AC DC Converters, Offline Switchers - LM5021NA-1/NOPB | AC DC Converters, Offline Switches | PMIC - AC DC Converters, Offline Switchers |
| Package Type | DIP; Other; 8-DIP (0.300", 7.62mm) | DIP; Other; 8-DIP (0.300\", 7.62mm) |
