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| 型号： | ISL97693IRTZ-TK |
| 厂商： | Intersil |
| 文件页数： | 25/28页 |
| 文件大小： | 0K |
| 描述： | IC LED DRVR BACKLIGHT 16TQFN |
| 标准包装： | 1,000 |
| 拓扑： | PWM，升压（升压） |
| 输出数： | 6 |
| 内部驱动器： | 是 |
| 类型 - 主要： | 背光 |
| 频率： | 400kHz ~ 1.5MHz |
| 电源电压： | 2.5 V ~ 5.5 V |
| 输出电压： | 26V |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-WFQFN 裸露焊盘 |
| 供应商设备封装： | 16-TQFN（3x3） |
| 包装： | 带卷 (TR) |
| 工作温度： | -40°C ~ 85°C |
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ISL97692, ISL97693, ISL97694A
VIN
LX
VOUT
DRIVER
IMAX
ILIMIT
FAULT
LOGIC
O/P
SHORT
FET
DRIVER
LX
OVP
VSC
CH1
FAULT FLAG
CHx
THRM
SHDN
OTP
REF
T2
TEMP
SENSOR
T1
FAULT
DETECT
DC1
Q1
DC2
Qx
LOGIC
PWM
PWM/OC1/SC1
PWM/OCx/SCx
GENERATOR
FIGURE 35. ISL97692/3/4A SIMPLIFIED FAULT PROTECTIONS
TABLE 7. ISL97692/3/4A PROTECTIONS TABLE
CASE
1
FAILURE MODE
CH1 Short Circuit
DETECTION MODE
Upper
Over-Temperature
FAILED CHANNEL ACTION
CH1 ON and burns power.
OTHER CHANNELS ACTION
Normal Operation
V OUT
REGULATED BY
Highest LED string V F
of other channels
Protection limit (OTP)
not triggered and
CH1 < 8V
2
CH1 Short Circuit
OTP triggered
Boost converter and channels are shut down until V IN is cycled
-
3
CH1 Short Circuit
OTP not triggered,
CH1 > 8V
CH1 disabled after 6 PWM cycle
time-out
Normal Operation
Highest LED string V F
of other channels
4
CH1 Open Circuit with OTP not triggered,
infinite resistance CH1 < 8V
V OUT will ramp to OVP. CH1 will
time-out after 6 PWM cycles and
Normal Operation
Highest LED string V F
of other channels
switch off. V OUT will then reduce to
normal level
5
Output LED stack
voltage too high
V OUT = V OVP
25
Any channel that is below the target current will time-out after 6 PWM Highest LED string V F
cycles while V OUT is regulated at V OVP , and V OUT will then return to the of channels above
normal regulation voltage required for other channels target current
FN7839.4
December 20, 2012
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相关代理商/技术参数 |
参数描述 |
|---|---|
| ISL97694AIRTZ | 制造商:Intersil Corporation 功能描述:6 CH W/12-BIT PWM DIMMING SINGLE CELL LI-ION BATTERY POWERED - Rail/Tube 制造商:Intersil Corporation 功能描述:IC LED DRVR BACKLIGHT 20TQFN |
| ISL97694AIRTZ-T | 制造商:Intersil Corporation 功能描述:6 CH W/12-BIT PWM DIMMING SINGLE CELL LI-ION BATTERY POWERED - Tape and Reel 制造商:Intersil Corporation 功能描述:IC LED DRVR BACKLIGHT 20TQFN |
| ISL97694AIRTZ-TK | 功能描述:LED照明驱动器 6CH w/12Bit Dimming Li-Ion LED Driver 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 |
| ISL97698IIZ-T | 制造商:Intersil Corporation 功能描述:HIGH EFFICIENCY 2 STRING LED DRIVER FOR SMARTPHONESWLCSP 12 - Tape and Reel 制造商:Intersil Corporation 功能描述:IC LED DRVR BACKLIGHT 12WLCSP |
| ISL97701IRZ | 功能描述:直流/直流开关转换器 BOOST W/ INTEGRATED SCHOTKY & INPUT DISC RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT |
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