Features
| | Input operating voltage range: 6V to 42V |
| | Absolute maximum input rating: 45V |
| | Integrated 2A N-Channel Buck Switch |
| | Adjustable current limit |
| | Adjustable output voltage from 2.51V |
| | Minimum ripple voltage at VOUT |
| | Power Good output |
| | Switching frequency adjustable to 2 MHz |
| | Switching frequency remains nearly constant with load current and input voltage variations |
| | Ultra-fast transient response |
| | No loop compensation required |
| | Stable operation with ceramic output capacitors |
| | Adjustable Soft-Start timing |
| | Thermal shutdown |
| | Precision 2% feedback reference |
Description The LM25011 Constant On-time Step-Down Switching Regulator features all the functions needed to implement a low cost, efficient,
buck bias regulator capable of supplying up to 2A of load current. This high voltage regulator contains an N-Channel Buck
switch, a startup regulator, current limit detection, and internal ripple control. The constant on-time regulation principle
requires no loop compensation, results in fast load transient response, and simplifies circuit implementation. The operating
frequency remains constant with line and load. The adjustable valley current limit detection results in a smooth transition
from constant voltage to constant current mode when current limit is reached, without the use of current limit foldback. The
PGD output indicates the output voltage has increased to within 5% of the expected regulation value. Additional features include:
Low output ripple, VIN under-voltage lock-out, adjustable soft-start timing, thermal shutdown, gate drive pre-charge, gate
drive under-voltage lock-out, and maximum duty cycle limit.
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Also Recommended
| LM5005▲ | 2.5A, 7-75V Step-down Regulator |
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