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BU90003GWZ Datasheet(PDF) 11 Page - Rohm |
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BU90003GWZ Datasheet(HTML) 11 Page - Rohm |
11 / 14 page Technical Note 11/14 BU90002GWZ, BU90003GWZ, BU90004GWZ, BU90005GWZ, BU90006GWZ www.rohm.com Target spec. ver.1.7 © 2011 ROHM Co., Ltd. All rights reserved. ●Description of operations 1) Shutdown If the EN input pin set to low (<0.4V), all circuit are shut down and the regulator is standby mode. Do not leave the EN pin floating. 2) Soft start function The regulator has a soft start circuit that reduces in-rush current at start-up. Typical start up times with a 4.7uF output capacitor is 120usec. 3) Current limit The BU9000XGWZ has a current limit circuit that protects itself and external components during overload condition. 4) UVLO The BU9000XGWZ has a Under Voltage Lock Out circuit that turn off device when VIN>2.05V(typ.) 5) FORCED PWM MODE Setting MODE pin high (>1.4V) places the regulator in forced PWM. 6) TSD The BU9000XGWZ has a thermal shutdown feature to protect the device if the junction temperature exceeds 150℃.In thermal shutdown, the DRIVER is disabled. |
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