ams AS7620
The AS7620 is an easy-to-use, high-efficiency, high-voltage, hysteretic step-down DC-DC converter, operating in asynchronous mode. Its low-power architecture extends hold-up time in batterybacked and critical applications where maximum up-time over a wide input supply voltage range is needed, while still providing for high efficiencies of up to 90% during peak current demands. By selecting an appropriate inductor value, operating current can be lowered and switching frequencies tuned to certain load conditions.
| Part No. |
AS7620 |
| Datasheet |
AS7620
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| Manufacturer |
 ams |
| Description |
Ultra low Ripple Step Down DC/DC Converter |
| Buy |
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GENERAL DESCRIPTION
Although the AS7620 is optimized for 24V applications found in industrial and medical systems, its ability to support 100% Duty Cycle makes the AS7620 ideal for applications demanding maximum up-time and soft power fail behavior. In combination with low idle current of only 30µA, on-demand switching reduces operating current at low load currents. A pin-strapped current limit input minimizes inductor peak current and thus inductor size and cost for any given application. The device further includes output short-circuit protection and thermal shutdown. In shutdown mode, only 1µA (typ) of current is consumed. Figure 1. AS7620 - Block Diagram 2 Key FEATURES
Low quiescent current for efficient partial load operation Wide Supply Voltage Range, 3.6V to 32V 100% Duty Cycle extends operating range Pin-programmable cycle-by-cycle current limit Integrated PMOS eliminates bootstrap capacitor Resistor-programmable Early Power Fail Warning Input Power-Good Flag Thermal Shutdown F...
