Packaging information
| Package | Pins VSSOP (DGK) | 8 |
| Operating temperature range (°C) -40 to 125 |
| Package qty | Carrier 3,500 | LARGE T&R |
Features for the LM5021-Q1
- Qualified for Automotive Applications
- AEC-Q100 Qualified With the Following Results:
- Device Temperature Grade 1: –40°C to 125°C
Ambient Operating Temperature Range - Device HBM Classification Level 2: ±2 kV
- Device CDM Classification Level C4B: 750 V
- Device Temperature Grade 1: –40°C to 125°C
- Ultra Low Start-up Current (25 µA maximum)
- Current Mode Control
- Skip Cycle Mode for Low Standby Power
- Single Resistor Programmable Oscillator
- Synchronizable Oscillator
- Adjustable Soft-Start
- Integrated 0.7 A Peak Gate Driver
- Direct Opto-Coupler Interface
- Maximum Duty Cycle Limiting (80% for LM5021-1 or 50%
for LM5021-2) - Slope Compensation (LM5021-1 Only)
- Under Voltage Lockout (UVLO) with Hysteresis
- Cycle-by-Cycle Over-Current Protection
- Hiccup Mode for Continuous Overload Protection
- Leading Edge Blanking of Current Sense Signal
- Package: VSSOP-8
Description for the LM5021-Q1
The LM5021 off-line pulse width modulation (PWM) controller contains all of the features needed to implement highly efficient off-line single-ended flyback and forward power converters using current-mode control. The LM5021 features include an ultra-low (25 µA) start-up current, which minimizes power losses in the high voltage start-up network. A skip cycle mode reduces power consumption with light loads for energy conserving applications (ENERGY STAR®, CECP, and so forth). Additional features include under-voltage lockout, cycle-by-cycle current limit, hiccup mode overload protection, slope compensation, soft-start and oscillator synchronization capability. This high performance 8-pin IC has total propagation delays less than 100 ns and a 1-MHz capable oscillator that is programmed with a single resistor.