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MP8352 Datasheet(PDF) 11 Page - Monolithic Power Systems |
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MP8352 Datasheet(HTML) 11 Page - Monolithic Power Systems |
11 / 12 page MP8352 – 3V to 6V INPUT, 6A, 600KHz STEP-DOWN WITH SYNCHRONOUS GATE DRIVER MP8352 Rev. 1.0 www.MonolithicPower.com 11 1/25/2010 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. © 2010 MPS. All Rights Reserved. External Bootstrap Diode An external bootstrap diode may enhance the efficiency of the regulator, the applicable conditions of external BST diode are: Duty cycle is high: D= IN OUT V V >65% In these cases, an external BST diode is recommended from VCC to BST pin, as shown in Fig.4 SW BST C L BST C 2.5V OUT External BS External VCC T Diode MP8352 IN4148 Figure 4—Add Optional External Bootstrap Diode to Enhance Efficiency The recommended external BST diode is IN4148, and the BST cap is 0.1~1µF, when the BST diode is used. Vcc Bias Supply Consideration The MP8352 does not have the LDO inside. It needs external bias power supply to make the device work properly. |
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