LM21305
Description
The LM21305 is a full-featured, 5-A, synchronous buck dc-dc converter optimized for solution size, flexibility, and high conversion efficiency.
Key Features
- External Frequency Synchronization
- Accurate 0.598-V Feedback Voltage Reference
- Ultra-Fast Line and Load Transient Response
- Ultra-Low Shutdown Quiescent Current
- Wide Duty-Cycle Operating Range: – TON-MIN: 70 ns for Low VOUT – TOFF-MIN: 50 ns for High Duty Cycle
- Diode Emulation Mode at Light Loads
- Integrated Bias Supply LDO Sub-Regulators
- Internal Soft-Start Function: – Monotonic Startup into Pre-Biased Loads
- Precision Enable Input with Hysteresis
- Open-Drain PGOOD Indicator
Applications
- VOUT tracks VIN if VIN < 3.4V
