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| 型号： | ISL97635IRZ |
| 厂商： | Intersil |
| 文件页数： | 23/28页 |
| 文件大小： | 0K |
| 描述： | IC LED DRVR WHT/RGB BCKLGT 24QFN |
| 标准包装： | 75 |
| 拓扑： | PWM，升压（升压） |
| 输出数： | 8 |
| 内部驱动器： | 是 |
| 类型 - 主要： | 车载，背光 |
| 类型 - 次要： | RGB，白色 LED |
| 频率： | 600kHz，1.2MHz |
| 电源电压： | 6 V ~ 24 V |
| 输出电压： | 34.5V |
| 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： | 24-QFN 裸露焊盘（4x4） |
| 包装： | 管件 |
| 工作温度： | -40°C ~ 85°C |
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ISL97635
REGISTER 0x07
DC BRIGHTNESS CONTROL REGISTER
BRTDC7
Bit 7 (R/W)
BRTDC6
Bit 6 (R/W)
BRTDC5
Bit 5 (R/W)
BRTDC4
Bit 4 (R/W)
BRTDC3
Bit 3 (R/W)
BRTDC2
Bit 2 (R/W)
BRTDC1
Bit 1 (R/W)
BRTDC0
Bit 0 (R/W)
BIT ASSIGNMENT
BRTDC[7..0]
BIT FIELD DEFINITIONS
= 256 steps of DC brightness levels
FIGURE 27. DESCRIPTIONS OF DC BRIGHTNESS CONTROL REGISTER
DC Brightness Control Register (0x07)
The DC Brightness Control Register 0x07 allows users to
have additional dimming flexibility by:
1. Effectively achieving 16 bits of dimming control when DC
dimming is combined with PWM dimming or,
2. Achieving visual or audio noise free 8-bit DC dimming
over potentially noisy PWM dimming.
The bit assignment is shown in Figure 27. All of the bits in
this Register can be read or write. Steps 0 to 255 represent
the linear steps of current adjustment in DC on the fly. It can
also be considered as the peak current factory calibration
feature to account for various LED production batch
variations, but external EEPROM settings storing and
restoring are required.
? An SMBus Write Byte cycle to Register 0x07 sets the
brightness level in DC only.
? An SMBus Read Byte cycle to Register 0x07 returns the
current DC brightness level.
? Default value for Register 0x07 is 0xFF.
Configuration Register (0x08)
The Configuration Register allows users to set 2 levels of
channel Short-Circuit thresholds or disable it. It also allows
users to set the boost conversion switching frequency
between 1.2MHz and 600kHz.
The bit assignment is shown in Figure 28. The default value
for Register 0x08 is 0xFF
Output Channel Mask/Fault Readout Register
(0x09)
This register can be read or write; the bit position
corresponds to the channel. For example, bit 0 corresponds
to Ch0 and bit 6 corresponds to Ch6 and so on. Writing data
to this register, it enables the channels of interest. When
reading data from this register, any disabled channel and
any faulted out channel will read as 0. This allows the user to
determine which channel is faulty and optionally not enabling
it in order to allow the rest of the system to continue to
function. Additionally, a faulted out channel can be disabled
and re-enabled in order to allow a retry for any faulty channel
without having to power-down the other channels.
The bit assignment is shown in Figure 29. The default for
Register 0x09 is 0xFF.
REGISTER 0x08
CONFIGURATION REGISTER
RESERVED RESERVED RESERVED RESERVED RESERVED
FSW
VSC1
VSC0
Bit 7 (R/W)
Bit 6 (R/W)
Bit 5 (R/W)
Bit 4 (R/W)
Bit 3 (R/W)
Bit 2 (R/W)
Bit 1 (R/W)
Bit 0 (R/W)
BIT ASSIGNMENT
VSC[1..0]
FSW[2]
BIT FIELD DEFINITIONS
2 levels of Short-Circuit Thresholds (1 = 8V, 0 = 3.1V, accuracy ±15%)
2 levels of Switching Frequencies (1 = 1,200kHz, 0 = 600kHz)
FIGURE 28. DESCRIPTIONS OF CONFIGURATION REGISTER
23
FN6434.2
December 22, 2008
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相关代理商/技术参数 |
参数描述 |
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| ISL97635IRZ-T | 功能描述:IC LED DRVR WHT/RGB BCKLGT 24QFN RoHS:是 类别:集成电路 (IC) >> PMIC - LED 驱动器 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,500 系列:- 恒定电流:- 恒定电压:- 拓扑:升压（升压），切换式电容器（充电泵） 输出数:1 内部驱动器:是 类型 - 主要:背光 类型 - 次要:白色 LED 频率:625kHz ~ 875kHz 电源电压:2.7 V ~ 5.3 V 输出电压:5V 安装类型:表面贴装 封装/外壳:10-TFSOP，10-MSOP（0.118"，3.00mm 宽） 供应商设备封装:10-µMAX 包装:带卷 (TR) 工作温度:-40°C ~ 85°C |
| ISL97635IRZ-TK | 功能描述:IC LED DRVR WHT/RGB BCKLGT 24QFN RoHS:是 类别:集成电路 (IC) >> PMIC - LED 驱动器 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,500 系列:- 恒定电流:- 恒定电压:- 拓扑:升压（升压），切换式电容器（充电泵） 输出数:1 内部驱动器:是 类型 - 主要:背光 类型 - 次要:白色 LED 频率:625kHz ~ 875kHz 电源电压:2.7 V ~ 5.3 V 输出电压:5V 安装类型:表面贴装 封装/外壳:10-TFSOP，10-MSOP（0.118"，3.00mm 宽） 供应商设备封装:10-µMAX 包装:带卷 (TR) 工作温度:-40°C ~ 85°C |
| ISL97636AIRZ | 功能描述:LED照明驱动器 6-CH LED DRVR 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 |
| ISL97636AIRZ-T | 功能描述:IC LED DRIVR WHITE BCKLGT 24-QFN RoHS:是 类别:集成电路 (IC) >> PMIC - LED 驱动器 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,500 系列:- 恒定电流:- 恒定电压:- 拓扑:升压（升压），切换式电容器（充电泵） 输出数:1 内部驱动器:是 类型 - 主要:背光 类型 - 次要:白色 LED 频率:625kHz ~ 875kHz 电源电压:2.7 V ~ 5.3 V 输出电压:5V 安装类型:表面贴装 封装/外壳:10-TFSOP，10-MSOP（0.118"，3.00mm 宽） 供应商设备封装:10-µMAX 包装:带卷 (TR) 工作温度:-40°C ~ 85°C |
| ISL97636AIRZ-TK | 功能描述:IC LED DRIVR WHITE BCKLGT 24-QFN RoHS:是 类别:集成电路 (IC) >> PMIC - LED 驱动器 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,500 系列:- 恒定电流:- 恒定电压:- 拓扑:升压（升压），切换式电容器（充电泵） 输出数:1 内部驱动器:是 类型 - 主要:背光 类型 - 次要:白色 LED 频率:625kHz ~ 875kHz 电源电压:2.7 V ~ 5.3 V 输出电压:5V 安装类型:表面贴装 封装/外壳:10-TFSOP，10-MSOP（0.118"，3.00mm 宽） 供应商设备封装:10-µMAX 包装:带卷 (TR) 工作温度:-40°C ~ 85°C |
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