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BD7672BG-TR Datasheet(PDF) 5 Page - Rohm |
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BD7672BG-TR Datasheet(HTML) 5 Page - Rohm |
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5 / 21 page  5/17 Datasheet Datasheet BD7672BG TSZ02201-0F2F0A200160-1-2 © 2013 ROHM Co., Ltd. All rights reserved. 16.Jul.2015 Rev.002 www.rohm.com TSZ22111・15・001 ( 2 ) VCC Pin Protection BD7672BG includes UVLO (Under Voltage Locked Out) and OVP (Over Voltage Protection) functions to monitor VCC pin voltage (see Figure 6 for OVP latch operation). The UVLO function prevents damage to MOSFET by stopping switching operations by latch protection when the VCC pin voltage drops to VCC < VUVLO2 (= 7.5V Typ). The VCC OVP function prevents damage to MOSFET by stopping switching operations when the VCC pin voltage exceeds VOVP1 (= 27.5V Typ). The latch release condition is when VCC < VLATCH (VUVLO2 - 0.5V, Typ = 7.0V). A latch blanking time is used for protecting mal-function. This time is 100us. 7. 5V 13.5V VCC Switing Time OFF Time 27.5V ON 7.0V OFF OUT ON 100 us Figure 6, VCC UVLO/OVP Operation (Latch) |
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