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BD2204GUL-E2 Datasheet(PDF) 4 Page - Rohm |
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BD2204GUL-E2 Datasheet(HTML) 4 Page - Rohm |
4 / 27 page . 4/23 BD2204GUL TSZ02201-0GDG0H300050-1-2 © 2012 ROHM Co., Ltd. All rights reserved. 25.Sep.2015 Rev.003 TSZ22111 • 15 • 001 www.rohm.com *3 When the switch changes from VIN1 to VIN2 or from VIN2 to VIN1, it is possible that VOUT voltage drops. Dropped voltage of VOUT is specified as Voutdrop1 and Voutdrop2. That voltage drop is caused by the function which prevents VIN1 and VIN2 from turning on simultaneously. This function generates the period which both VIN1and VIN2 are turned off, and prevents the penetration current between VIN1 and VIN2. VOUT=VIN2→VIN1 VOUT=VIN1→VIN2 Figure 4. VOUTIdrop voltage *TD1 and TD2 + TCOMP are period of Simultaneous-Off. *TCOMP is period of VOUT becoming same voltage as VIN2. *The value of Min. is in condition of IOUT=500mA and CL=15uF. Measurement Circuit Operating current, Standby current EN, SEL input voltage, Output rise, fall time On-resistance, VOUT drop voltage Discharge resistance Figure 5. Measurement circuit VIN2(1.8V) VIN(3.3V) Voutdrop2 Min. 1.4V OUT1 (Internal Signal) OUT2 (Internal Signal) VIN(3.3V) VIN2(1.8V) Voutdrop1 Min. 1.4V TD1 TD2 TCOMP VOUT VIN1 VEN A A VIN2 VIN2 EN GND VOUT SEL VIN1 VIN1 VIN2 CIN CL VEN VSEL RL VIN2 EN GND VOUT SEL VIN1 VIN1 VIN2 CIN VIN2 EN GND VOUT SEL CL VEN VSEL ↓ VIN1 VIN1 VIN2 CIN 1mA VEN ↑ VIN2 EN GND VOUT SEL VIN1 |
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