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BD6072HFN Datasheet(PDF) 11 Page - Rohm |
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BD6072HFN Datasheet(HTML) 11 Page - Rohm |
11 / 30 page Technical Note 11/29 www.rohm.com 2011.01 - Rev.C © 2011 ROHM Co., Ltd. All rights reserved. BD6067GU, BD6069GUT, BD6071HFN, BD6072HFN ►BD6071HFN ● Electrical characteristic curves (Reference data) ( 4ms/div ) IIN 200mA/div ILED 20mA/div VOUT 5V/div EN 2V/div Fig.31 Soft Start ( VIN = 3.6V, Ta = 25℃, 3LED, 20mA Load ) Fig.32 LED Open output voltage Fig.33 LED luminance adjustment ( VIN = 3.6V, Ta = 25℃, 3LED, 20mA Load ) Fig.26 Efficiency vs. LED current < 2LED > (VOUT=7.5V, Ta=25℃) Fig.25 Efficiency vs. LED current in each coil < 3LED > (VOUT=10.5V, VIN=3.6V, Ta=25℃) Fig.24 Efficiency vs. LED current in each coil < 2LED > (VOUT=7.5V, VIN=3.6V, Ta=25℃) Fig.27 Efficiency vs. LED current < 3LED > (VOUT=10.5V, VIN=3.6V, Ta=25℃) Fig.29 Output power vs. power source voltage Fig.28 Inductor current limits vs. Temperature Fig.30 Feedback voltage vs. Power source voltage ( 100µs/div ) IIN 100mA/dev VOUT 10V/div VFB 0.5V/div EN 5V/div 10ms Ave IIN =1.5mA ⊿ V=1.57V ( 4ms/div ) IIN 200mA/div VOUT 1V/div 60 65 70 75 80 85 90 10 15 20 25 30 35 40 ILED [mA] CoilCraft : DO1608C-223 TDK:VLCF4020T-220MR56 MURATA:LQH32CN220K53 TDK:VLF3012AT-220MR33 60 65 70 75 80 85 90 10 15 20 25 30 35 40 ILED [mA] CoilCraft : DO1608C-223 TDK:VLCF4020T-220MR56 MURATA:LQH32CN220K53 TDK:VLF3012AT-220MR33 60 65 70 75 80 85 90 10 15 20 25 30 35 40 ILED [mA] VIN=5.5V VIN=3.1V VIN=4.5V VIN=3.6V 200 220 240 260 280 300 320 340 -30 -10 10 30 50 70 90 Temparature [℃] VIN=5.5V VIN=3.1V VIN=3.6V 60 65 70 75 80 85 90 10 15 20 25 30 35 40 ILED [mA] VIN=5.5V VIN=3.1V VIN=4.5V VIN=3.6V 0 500 1000 1500 2000 2.5 3 3.5 4 4.5 VIN [V] Ta=85℃ Ta=25℃ Ta=-30℃ 0.47 0.48 0.49 0.5 0.51 0.52 0.53 2.53 3.544.5 55.5 VIN [V] Ta=85℃ Ta=25℃ Ta=-30℃ |
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