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参数资料
| 型号： | BD6592MUV-E2 |
| 厂商： | Rohm Semiconductor |
| 文件页数： | 19/34页 |
| 文件大小： | 0K |
| 描述： | IC LED DRVR WHITE BCKLGT 24-VQFN |
| 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： | BD6592MUV-E2DKR |
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BD6592MUV
Datasheet
● LED Current Setting Range
LED current can set up Normal and Starting setting current.
LED current can set up Normal current by resistance value (RISETH) connecting to ISETH voltage and LED current can set
Starting current by resistance value (RISETL) connecting to ISETL voltage.
Setting of each LED current is given as shown below.
Normal current = 20mA (24k ? /RISETH) Starting constant current = 0.6/RISET L
Also, Normal current setting range is 10mA to 25mA, Starting current setting range is OFF setting or 1μA to 100μA.
LED current can set OFF setting by open setting ISETL pin.
LED current becomes a leak current MAX 1μA at OFF setting.
ISETH Normal current setting example
RISETH LED current
ISETL Starting current setting example
RISETL LED current
12k ? (E12)
16 k ? (E16)
24k ? (E24)
25.5 k ? (E96)
27 k ? (E12)
30k ? (E24)
40mA
30mA
20mA
18.8mA
17.8mA
16.0mA
6.2k ? (E24) 97μA
10k ? (E6) 60μA
47k ? (E6) 13μA
100 k ? (E6) 6μA
560 k ? (E12) 1.1μA
Connect to VREG pin 0mA
● The Separations of the IC Power Supply and Coil Power Supply
This IC can work in separating the power source in both IC power supply and coil power supply. With this application, it can
obtain that decrease of IC power consumption, and the applied voltage exceeds IC rating 22V.
That application is shown in below Figure 42. The higher voltage source is applied to the power source of coil that is
connected from an adapter etc. Next, the IC power supply is connected with a different coil power supply. Under the
conditions for inputting from 2.7V to 5.5V into IC VBAT, please follow the recommend design in Figure 40. It connects VBAT
terminal and VREG terminal together at IC outside.
When the coil power supply is applied, it is no any problem even though IC power supply is the state of 0V. Although IC
power supply is set to 0V, pull-down resistance is arranged for the power off which cuts off the leak route from coil power
supply in IC inside, the leak route is cut off. And, there is no power on-off sequence of coil power supply and IC power
supply.
Coil Power supply
7V to 28V
Battery
10 μ F
4.7 μ H
2.2 μ F
2.2 μ F
10LED x 6
RTR020N05
SW
SENSP
FAILSEL
VDET
47m ?
SENSN
Power
ON/OFF
RSTB
PWMDRV
LED1
200Hz
PWM
IC Power supply 2.7V to 5.5V
1 μ F
PWMPOW
VBAT
VREG
LED2
LED3
LED4
LED5
GND GND GND GND TEST ISETH ISETL LED6
12k ?
各 40mA
Figure 43. Application at the time of power supply isolation
www.rohm.com
? 2012 ROHM Co., Ltd. All rights reserved.
TSZ22111 ? 15 ? 001
19 / 31
TSZ02201-0G3G0C400210-1-2
21.Dec.2012 Rev.001
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