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| 型号： | BD6583MUV-AE2 |
| 厂商： | Rohm Semiconductor |
| 文件页数： | 15/35页 |
| 文件大小： | 0K |
| 描述： | IC LED DRIVER WHIT BCKLGT 24VQFN |
| 标准包装： | 1 |
| 拓扑： | PWM，升压（升压） |
| 输出数： | 6 |
| 内部驱动器： | 是 |
| 类型 - 主要： | 背光 |
| 类型 - 次要： | 白色 LED |
| 频率： | 800kHz ~ 1.2MHz |
| 电源电压： | 2.7 V ~ 22 V |
| 输出电压： | 43V |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 24-VFQFN 裸露焊盘 |
| 供应商设备封装： | VQFN024V4040 |
| 包装： | 标准包装 |
| 工作温度： | -30°C ~ 85°C |
| 产品目录页面： | 1372 (CN2011-ZH PDF) |
| 其它名称： | BD6583MUV-ADKR BD6583MUV-ADKR-ND BD6583MUV-AE2DKR |
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BD6583MUV-A
Datasheet
(Example 2)
In case of, VIN=12.0V, L=4.7μH, fsw=1MHz, VOUT=39V, IOUT=80mA, Efficiency=85%
Ipeak = (12.0V / 4.7μH) × (1 / 1MHz) × (1-(12V / 39V)) =1.77A
Iave = (39V × 80mA / 12.0V) / 85% = 0.31A
Ton = (0.31A × (1-12 V / 39V) × (1 / 1MHz) × ( 4.7μH /12 V) × 2) 1/2 = 0.41μs
(1-VIN/VOUT) × (1/fsw)=0.69μs > Ton
Peak current = 12V/4.7μH × 0.41μs = 1.05A
*When too large current is set, output overshoot is caused, be careful enough because it is led to break down of the IC in
case of the worst.
● Operating of the application deficiency
1) When 1 LED or 1parallel OPEN during the operating
In case of FAILSEL=L, the LED parallel which became OPEN isn't lighting, but other LED parallel is lighting.
At that time, output boosts up to the over voltage protection voltage 44.7V so that LED terminal may be 0V or it boost to
the output voltage that LED terminal voltage becomes LED terminal over voltage protection 11.5V or it becomes the
output voltage restricted by the over current limit.
In case of FAILSEL=H, boost stops when LED becomes OPEN and all LED turns off the lights.
2) When LED short-circuited in the plural
In case of FAILSEL=L, all LED is turned on unless LED terminal voltage is LED terminal over voltage protection of more
than 11.5V.
When it was more than 11.5V only the line which short-circuited is turned on normally and LED current of other lines fall
or turn off the lights. In case of FAILSEL=H, boost stops at more than 11.5V and all LED turns off the lights.
3) When Schottky diode came off
Regardless of FAILSEL, all LED isn't turned on. Also, IC and a switching transistor aren't destroyed because boost
operating stops by the Schottky diode coming off protected function.
4) When over current detection resistor came off
Regardless of FAILSEL, all LED isn't turned on. Because the resistance of 100k ? is between SENSP and SENSN
terminal, over current protection works instantly and LED current can't be flow.
● Control signal input timing
2.7V 5V
VBAT
2
Min. 100μs
5V
0V
1
RSTB
PWMPOW
3
5V
2 20 ?
PIN
VBAT
Rin
PWMDRV
VREG
DC/DC VOUT
Figure 33. Control signal timing
GND
Figure 34. Voltage with a control sign higher than VBAT
Example corresponding to application of conditions
In case you input control signs, such as RSTB, PWMPOW, and PWMDRV, in the condition that the standup of supply
voltage (VBAT) is not completed, be careful of the following point.
① Input each control signal after VBAT exceeds 2.7V.
② Please do not input each control sign until VBAT exceeds H voltage of RSTB, PWMPOW, and PWMDRV.
③ When you input RSTB during the standup of VBAT and H voltage is inputted into PWMPOW, please give the standup
time to stable voltage as Min.100μs 2.7V of VBAT.
There is no timing limitation at each input signal of RSTB, PWMPOW and PWMDRV.
If each control sign changes into a condition lower than VBAT in (1) and (2), it goes via the ESD custody diode by the side
of VBAT of each terminal. A power supply is supplied to VBAT and there is a possibility of malfunctioning. Moreover, when
the entrance current to the terminal exceeds 50mA, it has possibility to damage the LSI. In order to avoid this condition, as
shown in the above figure, please insert about 220 ? in a signal line, and apply current qualification. Please confirm an
internal pull down resistor in the block diagram and electrical property of P.5.
www.rohm.com
? 2012 ROHM Co., Ltd. All rights reserved.
TSZ22111 ? 15 ? 001
15/32
TSZ02201-0G3G0C400180-1-2
03.Dec.2012 Rev.001
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| BD6583MUV-E2 | 功能描述:LED照明驱动器 72 LEDs 2.7-22V 43V Max Out 25mA Out RoHS:否 制造商:STMicroelectronics 输入电压:11.5 V to 23 V 工作频率: 最大电源电流:1.7 mA 输出电流: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:SO-16N |
| BD6586MUV | 制造商:ROHM 制造商全称:Rohm 功能描述:Silicon Monolithic Integrated Circuit |
| BD6586MUV_11 | 制造商:ROHM 制造商全称:Rohm 功能描述:White Backlight LED Driver for Medium to Large LCD Panels (Switching Regulator Type) |
| BD6586MUV-E2 | 功能描述:LED照明驱动器 24 LEDs 2.7-5.5V 24V Max Out 25mA Out RoHS:否 制造商:STMicroelectronics 输入电压:11.5 V to 23 V 工作频率: 最大电源电流:1.7 mA 输出电流: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:SO-16N |
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