ADP1821 PWM buck controller uses an input voltage of 3.7 V to 20 V
Referenzdesign unter Verwendung des Teils ADP1821 von Analog Devices
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Beschreibung
- ADP1821 is a versatile, single output, synchronous PWM buck controller that generates outputs from an input voltage of 3.7 V to 20 V. The controller can be configured to provide output voltage from 0.6 V to 85% of the input voltage. The ADP1821 operates at a pin-selectable fixed switching frequency of either 300 kHz or 600 kHz. for some noise sensitive applications, it can also be synchronized to an external clock to achieve switching frequency between 300 kHz and 1 MHz. The switching frequency chosen is 300 kHz to get good efficiency over a wide range of input and output conditions
Haupteigenschaften
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Conversion TypeDC to DC
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Input Voltage12 V
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Output Voltage1.5|1.2 V
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Output Current20@1.5V|20@1.2V A
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TopologyBuck