BD6067GU-E2 Rohm Semiconductor, BD6067GU-E2 Datasheet

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... Possible to driving 3 LEDs (BD6071HFN ) 4) Possible to driving 4 LEDs (BD6069GUT, BD6072HFN) 5) Possible to driving 8 LEDs (BD6067GU) 6) Soft start function (BD6067GU, BD6069GUT, BD6071HFN, BD6072HFN) 7) Synchronous rectification Boost DC/DC converter (BD6069GUT, BD6071HFN, BD6072HFN external schottky diode required (BD6069GUT, BD6071HFN, BD6072HFN) 9) Output Open • Short protect (BD6069GUT, BD6071HFN, BD6072HFN) ● ...

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... BD6067GU, BD6069GUT, BD6071HFN, BD6072HFN ►BD6067GU ●Absolute maximum ratings (Ta=25℃) Parameter Power supply voltage 1 Power supply voltage 2 Operating temperature range Storage temperature range Power dissipation *1 This value is based on GND. *2 This loss decreases approximate 6.4mW/℃ when Ta is 25℃ or more. ●Recommended Operation Range (Ta=-30℃ to +85℃) ...

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... BD6067GU, BD6069GUT, BD6071HFN, BD6072HFN ►BD6067GU ●Electrical characteristic curves (Reference data) 5.0 4.0 3.0 Ta=85 ℃ 2.0 Ta=25 ℃ 1.0 Ta=-30 ℃ 0.0 2.5 3 3.5 4 4.5 5 5.5 Vin [V] Fig.1 Operating current vs. Power Supply Voltage 100 Vin=5. Vin=3.6V 70 Vin=3. ILED [mA] Fig.4 Efficiency vs. LED Current (6LED) (Ta=25℃ ...

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... BD6067GU, BD6069GUT, BD6071HFN, BD6072HFN ►BD6067GU ●Block Diagram and Recommended Circuit Example L1 22µH Vin Cin 1µF Vin Current Sence GND GNDA Fig.11 Block Diagram and Recommended Circuit Example Fig.12 Pin location diagram VCSP85H1 (Bottom view) ●Pin assignment table Pin Pin name ...

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... The startup condition of BD6067GU is controlled via the SHDNB/EN pin powered OFF at 0.4V or less and powered ON at 1.4V or more. As shown in Fig.13, brightness is controlled in the BD6067GU via the PWM signal input the SHDNB/EN pin. In this way, the LED current is controlled in a range from 0 to the maximum current. The average LED current increases in proportion to the Duty cycle of the PWM signal ...

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... Fig.14 Brightness Control by BD6067GU DAC ●Over voltage Protection BD6067GU has an over voltage protection feature. When a fault occurs, for example disconnected from LED, an excessive voltage rise may cause the SW pin and VOUT pin to exceed the absolute maximum ratings respectively, resulting in IC damage. For this reason, when VOUT is 30V or more, over voltage protection is activated to turn Q1 off so that the SW pin and VOUT pin don’ ...

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... BD6067GU, BD6069GUT, BD6071HFN, BD6072HFN ►BD6067GU ●Startup and Rush Current BD6067GU has a built-in soft start function. This function prevents the rush current from being generated at startup time. L1 22µH Vin Cin 1µF Vin SW Q1 GND ●Application Circuit Example The output maximum voltage range of BD6067GU is 30V. ...

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... The recommended capacitance is 1µF or more. <Recommended parts> Capacitance value 1.0µF C0: Output smoothing capacitor. The capacitance recommended for BD6067GU is 1.0µF. <Recommended parts> Capacitance value 1.0µF When selecting capacitors for Cin and C0, special care should be taken for rated voltage. The desirable rated voltage is about double the voltage actually applied to the capacitor ...

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... BD6067GU, BD6069GUT, BD6071HFN, BD6072HFN ►BD6067GU ***Bypass capacitor and GND It is necessary to place bypass capacitor CIN, coil L1 and power ground GND near this IC (CIN2 of Fig.20). To obtain good characteristics, as the need arises power supply, bypass capacitor CIN between analog GNDA must be added. (at LED8 lights). ...

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... BD6067GU, BD6069GUT, BD6071HFN, BD6072HFN ►BD6071HFN ●Absolute maximum ratings (Ta=25℃) Parameter Power supply voltage 1 Power supply voltage 2 Power dissipation Operating temperature range Storage temperature rang *1 These values are based on GND and GNDA pins. *2 When it’s used by more than Ta=25℃, it’s reduced by 5.04mW/℃. ...

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... BD6067GU, BD6069GUT, BD6071HFN, BD6072HFN ►BD6071HFN ●Electrical characteristic curves (Reference data CoilCraft : DO1608C-223 80 MURATA:LQH32CN220K53 75 TDK:VLCF4020T-220MR56 70 TDK:VLF3012AT-220MR33 ILED [mA] Fig.24 Efficiency vs. LED current in each coil < 2LED > (VOUT=7.5V, VIN=3.6V, Ta=25℃ VIN=5.5V 75 VIN=4.5V 70 VIN=3.6V VIN=3. ILED [mA] Fig.27 Efficiency vs. LED current < 3LED > (VOUT=10.5V, VIN=3.6V, Ta=25℃) ...

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... BD6067GU, BD6069GUT, BD6071HFN, BD6072HFN ►BD6071HFN ●Block diagram, recommended circuit example, pin location diagram 1μF 22μH VIN SW Q1 GND Fig.34 Block diagram and recommended circuit diagram ●Pin assignment table PIN Name In/Out Pin number GNDA - EN In TEST In VIN In VFB In VOUT Out SW In ...

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... BD6067GU, BD6069GUT, BD6071HFN, BD6072HFN ►BD6071HFN ●Description of Functions 1) Soft starts and off status BD6071HFN has soft start function and off status function. The soft start function and the off status function prevent large current from flowing to the IC via coil. Occurrence of rush current at turning on is prevented by the soft start function, and occurrence of invalid current at turning off is prevented by the off status function ...

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... BD6067GU, BD6069GUT, BD6071HFN, BD6072HFN ►BD6071HFN ●Start control and brightness control BD6071HFN can control the start conditions by its EN terminal, and power off at 0.4V or below, and power on at 1.4V or higher. And by changing the duty of power on and off by PWM control, the LED brightness can be adjusted. ...

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... BD6067GU, BD6069GUT, BD6071HFN, BD6072HFN ►BD6071HFN 2-2) The brightness adjustment of below is done in adjusting time by R1 and Duty cycle of PWM. The minimum value of the LED current is decided by VFB / R1 at the PWM 0%, the maximum value of the LED current is decided by VFB / R2 at the PWM 100%. ...

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... BD6067GU, BD6069GUT, BD6071HFN, BD6072HFN ►BD6071HFN ●Selection of external parts Recommended external parts are as shown below. When to use other parts than these, select the following equivalent parts. ・Coil Value Tolerance Manufacturer 22μH ±10% MURATA 22μH ±20% TDK 22μH ±20% Coil Craft 22μH ±20% TDK Please refer to the reference data of p ...

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... BD6067GU, BD6069GUT, BD6071HFN, BD6072HFN ►BD6071HFN ●Recommended PCB layout www.rohm.com © 2011 ROHM Co., Ltd. All rights reserved. 112mVpp VOUT (VBAT=3.6V, Ta=25℃, VOUT=14V, 20mA Load) Fig.48 Output noise Front surface (Top view) Bottom surface (Top view) Fig.49 PCB Layout 17/29 Technical Note ...

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... BD6067GU, BD6069GUT, BD6071HFN, BD6072HFN ►BD6069GUT, BD6072HFN ●Absolute maximum ratings (Ta=25℃) Parameter Power supply voltage 1 Power supply voltage 2 BD6069GUT Power dissipation BD6072HFN Operating temperature range Storage temperature range *1 These values are based on GND and GNDA pins. *2 When it’s used by more than Ta=25℃, it’s reduced by 6.4mW/℃. ...

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... BD6067GU, BD6069GUT, BD6071HFN, BD6072HFN ►BD6069GUT, BD6072HFN ●Electrical characteristic curves (Reference data) 5.0 4.0 3.0 Ta=85 ℃ 2.0 Ta=25 ℃ 1.0 Ta=-30 ℃ 0.0 2.5 3 3.5 4 4.5 5 5.5 Vin [V] Fig.50 Current Consumption vs Power source voltage CoilCraft : DO1608C-223 MURATA:LQH32CN220K53 75 TDK:VLCF4020T-220MR56 70 TDK:VLF3012AT-220MR33 ILED [mA] Fig ...

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... BD6067GU, BD6069GUT, BD6071HFN, BD6072HFN ►BD6069GUT, BD6072HFN ●Block diagram, recommended circuit example, pin location diagram C IN 1µF VIN Q1 Fig.62 Block diagram and recommended circuit diagram <BD6069GUT> Fig.63 Pin location diagram VCSP60N1 (Bottom view) ●Pin assignment table PIN Name In/Out BD6069GUT GNDA - A1 EN ...

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... BD6067GU, BD6069GUT, BD6071HFN, BD6072HFN ►BD6069GUT, BD6072HFN ●Description of Functions 1) Soft starts and off status BD6069GUT/BD6072HFN has soft start function and off status function. The soft start function and the off status function prevent large current from flowing to the IC via coil. Occurrence of rush current at turning on is prevented by the soft start function, and occurrence of invalid current at turning off is prevented by the off status function ...

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... BD6067GU, BD6069GUT, BD6071HFN, BD6072HFN ►BD6069GUT, BD6072HFN ●Start control and brightness control BD6069GUT/BD6072HFN can control the start conditions by its EN terminal, and power off at 0.4V or below, and power on at 1.4V or higher. And by changing the duty of power on and off by PWM control, the LED brightness can be adjusted. ...

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... BD6067GU, BD6069GUT, BD6071HFN, BD6072HFN ►BD6069GUT, BD6072HFN 2-2) The brightness adjustment of below is done in adjusting time by R1 and Duty cycle of PWM. The minimum value of the LED current is decided by VFB / R1 at the PWM 0%, the maximum value of the LED current is decided by VFB / R2 at the PWM 100%. ...

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... BD6067GU, BD6069GUT, BD6071HFN, BD6072HFN ►BD6069GUT, BD6072HFN ●Selection of external parts Recommended external parts are as shown below. When to use other parts than these, select the following equivalent parts. ・Coil Value Tolerance Manufacturer 22μH ±10% MURATA 22μH ±20% TDK 22μH ±20% Coil Craft 22μH ± ...

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... BD6067GU, BD6069GUT, BD6071HFN, BD6072HFN ►BD6069GUT, BD6072HFN Connect the input bypath capacitor CIN nearest to between VIN and GNDA pin, as shown in the upper diagram. Thereby, the input voltage ripple of the IC can be reduced. And, connect the output capacitor COUT nearest to between VOUT and GND pin ...

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... BD6067GU, BD6069GUT, BD6071HFN, BD6072HFN ►BD6069GUT, BD6072HFN ●Recommended PCB layout ●Attention point of PCB layout In PCB design, the wiring of power supply line should be low Impedance, and put the bypass capacitor if necessary. Especially the wiring impedance must be lower around the DC/DC converter. ●About heat loss In heat design, operate the DC/DC converter in the following condition ...

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... BD6067GU, BD6069GUT, BD6071HFN, BD6072HFN ●Notes for use 1) Absolute Maximum Ratings An excess in the absolute maximum ratings, such as supply voltage, temperature range of operating conditions, etc., can break down devices, thus making impossible to identify breaking mode such as a short circuit or an open circuit. If any special mode exceeding the absolute maximum ratings is assumed, consideration should be given to take physical safety measures including the use of fuses, etc ...

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... BD6067GU, BD6069GUT, BD6071HFN, BD6072HFN ●Ordering part number Part No. Part No. VCSP85H1 (BD6067GU) 1PIN MARK 1.68±0.1 0. φ 0.3±0.05 0. φ 0.15)INDEX POST 0.34±0.1 P=0.5× Part No. Part No. VCSP60N1 (BD6069GUT) 1PIN MARK 1.68±0.05 0. φ 0.3±0.05 0. φ 0.15)INDEX POST 0.34±0.05 P=0.5× ...

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... BD6067GU, BD6069GUT, BD6071HFN, BD6072HFN Part No. Part No. 6071 6072 HSON8 2.9±0.1 (MAX 3.1 include. BURR) (2.2) (0.05) 0.475 1PIN MARK S 0.1 S 0.65 0.32±0.1 0.08 M www.rohm.com © 2011 ROHM Co., Ltd. All rights reserved Package HFN : HSON8 <Tape and Reel information> Tape ...

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No copying or reproduction of this document, in part or in whole, is permitted without the consent of ROHM Co.,Ltd. The content specified herein is subject to change for improvement without notice. The content specified herein is for the purpose ...