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BD8311NUV-E2 Datasheet(PDF) 2 Page - Rohm |
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BD8311NUV-E2 Datasheet(HTML) 2 Page - Rohm |
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2 / 25 page  2/21 TSZ02201-0Q3Q0NZ00350-1-2 © 2014 ROHM Co., Ltd. All rights reserved. 17.Feb.2015 Rev.002 www.rohm.com TSZ22111・15・001 BD8311NUV Pin Configuration Pin Description Block Diagram Pin No. Pin Name Function 1 GND Ground pin 2 VCC Supply voltage input pin 3 VREG 5V output terminal of regulator for internal circuit 4 , 5 LX Power switch terminal for coil 6 , 7 PGND Power transistor ground pin 8 STB ON/OFF terminal 9 INV ERROR AMP input pin 10 SWOUT STBSW for split resistance LX GND VREG VCC PGND INV SWOUT STB PGND LX 1 2 3 4 5 10 9 8 7 6 (TOP VIEW) Figure 2. Pin Configuration Figure 3. Block Diagram STB VREF ERROR_AMP Soft Start SCP OSC×16000 ｃount FB H STOP STBY_IO VCC PWM CONTROL Reference UVLO VREF 5V REG PGND Lx PRE DRIVER VREG GND INV 80m Ω VREG VREG OSC 1.2MHz SWOUT STB 50 Ω STB VREG VCC LX PGND SWOUT INV GND |
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