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A4407 Fiches technique(PDF) 27 Page - Allegro MicroSystems |
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A4407 Fiches technique(HTML) 27 Page - Allegro MicroSystems |
27 / 29 page 2.2 MHz Constant On-Time Buck Regulator With Two External and Two Internal Linear Regulators A4407 27 Allegro MicroSystems, Inc. 115 Northeast Cutoff Worcester, Massachusetts 01615-0036 U.S.A. 1.508.853.5000; www.allegromicro.com t V3.3V I3.3V C1 C2 V3.3V transient response, 125 to 250 mA; shows V3.3V (ch1, 50 mV/div.), I3.3V (ch2, 100 mA/div.), t = 50 μs/div. t V1.5V transient response, 225 to 450 mA; shows V1.5V (ch1, 50 mV/div.), I1.5V (ch2, 200 mA/div.), t = 50 μs/div. V1.5V I1.5V C1 C2 t VV5 IV5 C1 C2 VV5 transient response, 100 to 200 mA; shows VV5 (ch1, 50 mV/div.), IV5 (ch2, 100 mA/div.), t = 50 μs/div. t VREG IL C1 C2 VREG short circuit operation at VIN = 12 V; shows VREG (ch1, 2 V/div.), IL (ch2, 500 mA/div.), t = 5 μs/div. t VV5P transient response, 125 to 250 mA; shows VV5P (ch1, 50 mV/div.), IV5P (ch2, 100 mA/div.), t = 50 μs/div. VV5P IV5P C1 C2 t VREG normal (left) and overload (right) operation at VIN = 12 V; shows VREG (ch1, 2 V/div.), IL (ch2, 250 mA/div.) VREG VREG Normal operation (before overcurrent event) Overloaded operation (during overcurrent condition) IL IL C1 C2 |
Numéro de pièce similaire - A4407 |
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Description similaire - A4407 |
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