参数资料
型号: BD6592MUV-E2
厂商: Rohm Semiconductor
文件页数: 16/34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:
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
BD6592MUV
Datasheet
● Start to Use PWMPOW Terminal for the PWM Control, PWM Operating
After RSTB and PWMDRV are changing L ? H, input PWM to PWMPOW terminal.
There is no constraint in turn of RSTB and PWMDRV.
And, because it corresponds to PWM drive of shorter ON time than soft start time (1ms), when PWMPOW is input H more
than three times, the soft start is invalidated and it enable to correspond the high-speed drive. Until RSTB is set L,
invalidation of the soft start isn't canceled.
In case of lighting ? light off ? lighting, when it turns off the lights with PWM=L and It starts without soft start when it sets
PWM modulated light again.
But the peak current of the coil changes owing to discharge of output capacitor, It may flow to the over current limit value,
as follows Figure 36. Because soft start can be used when it turns off the lights with RSTB=L, The peak current of the coil
can be suppressed, as follows Figure 37 and this process of light off is recommended.
RSTB
PWMDRV
PWMPOW
Output Voltage
Current coil
Figure 36. Light off control of PWMPOW pin at PWM control on PWM=L
RSTB
PWMDRV
PWMPOW
Output Voltage
Current coil
Figure 37. Light off control of PWMPOW pin at PWM control on RSTB=L
www.rohm.com
? 2012 ROHM Co., Ltd. All rights reserved.
TSZ22111 ? 15 ? 001
16 / 31
TSZ02201-0G3G0C400210-1-2
21.Dec.2012 Rev.001
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