Datasheet MP2315 (Monolithic Power Systems) - 8
| Fabricante | Monolithic Power Systems |
| Descripción | High Efficiency 3A, 24V, 500kHz, with AAM (light load mode), Synchronous Step Down Converter in TSOT23-8 package |
| Páginas / Página | 18 / 8 — MP2315 – 24V, 3A SYNC STEP DOWN CONVERTER. PIN FUNCTIONS. Package. Name … |
| Formato / tamaño de archivo | PDF / 1.2 Mb |
| Idioma del documento | Inglés |
MP2315 – 24V, 3A SYNC STEP DOWN CONVERTER. PIN FUNCTIONS. Package. Name Description. Pin #
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MP2315 – 24V, 3A SYNC STEP DOWN CONVERTER PIN FUNCTIONS Package Name Description Pin #
A resistor is connected from AAM pin to ground to set a AAM voltage force MP2315 into 1 AAM non-synchronous mode when load is small. Drive AAM pin high (=VCC) will force MP2315 into CCM. Supply Voltage. The MP2315 operates from a +4.5V to +24V input rail. C1 is needed to 2 IN decouple the input rail. Use wide PCB trace to make the connection. 3 SW Switch Output. Use wide PCB trace to make the connection. System Ground. This pin is the reference ground of the regulated output voltage. 4 GND For this reason care must be taken in PCB layout. Suggested to be connected to GND with copper and vias. Bootstrap. A capacitor and a 20Ω resistor connected between SW and BST pins are 5 BST required to form a floating supply across the high-side switch driver. EN=1 to enable the MP2315. External clock can be applied to EN pin for changing 6 EN/SYNC switching frequency. Bias Supply. Decouple with 0.1μF-0.22μF cap. And the capacitance should be no more 7 VCC than 0.22μF Feedback. An external resistor divider from the output to GND, tapped to the FB pin, sets the output voltage. To prevent current limit run away during a short circuit fault condition 8 FB the frequency fold-back comparator lowers the oscillator frequency when the FB voltage is below 400mV. MP2393 O RECOMMENDED FOR NEW DESIGNS NOT REFER T MP2315 Rev. 1.01 www.MonolithicPower.com 8 1/8/2014 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2014 MPS. All Rights Reserved.
A resistor is connected from AAM pin to ground to set a AAM voltage force MP2315 into 1 AAM non-synchronous mode when load is small. Drive AAM pin high (=VCC) will force MP2315 into CCM. Supply Voltage. The MP2315 operates from a +4.5V to +24V input rail. C1 is needed to 2 IN decouple the input rail. Use wide PCB trace to make the connection. 3 SW Switch Output. Use wide PCB trace to make the connection. System Ground. This pin is the reference ground of the regulated output voltage. 4 GND For this reason care must be taken in PCB layout. Suggested to be connected to GND with copper and vias. Bootstrap. A capacitor and a 20Ω resistor connected between SW and BST pins are 5 BST required to form a floating supply across the high-side switch driver. EN=1 to enable the MP2315. External clock can be applied to EN pin for changing 6 EN/SYNC switching frequency. Bias Supply. Decouple with 0.1μF-0.22μF cap. And the capacitance should be no more 7 VCC than 0.22μF Feedback. An external resistor divider from the output to GND, tapped to the FB pin, sets the output voltage. To prevent current limit run away during a short circuit fault condition 8 FB the frequency fold-back comparator lowers the oscillator frequency when the FB voltage is below 400mV. MP2393 O RECOMMENDED FOR NEW DESIGNS NOT REFER T MP2315 Rev. 1.01 www.MonolithicPower.com 8 1/8/2014 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2014 MPS. All Rights Reserved.