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参数资料
| 型号： | ISL97675IRZ-TK |
| 厂商： | Intersil |
| 文件页数： | 16/21页 |
| 文件大小： | 0K |
| 描述： | IC LED DVR PWM CTRL 4CH 20QFN |
| 特色产品： | ISL9767x LED Drivers |
| 标准包装： | 1 |
| 拓扑： | PWM，升压（升压） |
| 输出数： | 4 |
| 内部驱动器： | 是 |
| 类型 - 主要： | 背光 |
| 频率： | 600kHz，1.2MHz |
| 电源电压： | 4.5 V ~ 26 V |
| 输出电压： | 45V |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 20-VFQFN 裸露焊盘 |
| 供应商设备封装： | 20-QFN（4x4） |
| 包装： | 标准包装 |
| 工作温度： | -40°C ~ 85°C |
| 其它名称： | ISL97675IRZ-TKDKR |
ISL97675
V IN
LX
V OUT
DRIVER
FAULT
O/P
SHORT
OVP
I MAX
I LIMIT
LOGIC
FET
DRIVER
VSC
FB1
V IN
V SET /2
FB4
REG
THRM
SHDN
OTP
REF
T2
TEMP
SENSOR
T1
V SET
+
Q1 V SET
+
Q4
-
PWM1/OC1/SC1
-
PWM4/OC4/SC4
PHASE SHIFT &
CONTROL
LOGIC
FIGURE 25. SIMPLIFIED FAULT PROTECTIONS
TABLE 3. PROTECTIONS TABLE
GOOD CHANNELS
V OUT
REGULATED
CASE
FAILURE MODE
DETECTION MODE
FAILED CHANNEL ACTION
ACTION
BY
1
FB1 Short Circuit
Upper Over-Temperature Protection
FB1 ON and burns power.
FB2 through FB4 Normal Highest VF of FB2
limit (OTP) not triggered and FB1 < 4V
through FB4
2
FB1 Short Circuit
Upper OTP triggered but VFB1 < 4V
All channels go off until chip
Same as FB1
Highest VF of FB2
cooled and then comes back on
with current reduced to 76%.
Subsequent OTP triggers will
reduce I OUT further.
through FB4
3
FB1 Short Circuit
Upper OTP not triggered but FB1 > 4V FB1 disabled after 6 PWM cycle FB2 through FB4 Normal Highest VF of FB2
timeout.
through FB4
4
FB1 Open Circuit with
infinite resistance
Upper OTP not triggered and FB1 < 4V V OUT will ramp to OVP. FB1 will
time-out after 6 PWM cycles
FB2 through FB4 Normal Highest VF of FB2
through FB4
and switch off. V OUT will drop to
normal level.
5
FB1 LED Open Circuit
Upper OTP not triggered and FB1 < 4V FB1 remains ON and has
FB2 through FB4 ON, Q2
VF of FB1
but has paralleled
Zener
highest VF, thus V OUT increases. through Q4 burn power
6
FB1 LED Open Circuit
Upper OTP triggered but FB1 < 4V
All channels go off until chip
Same as FB1
VF of FB1
but has paralleled
Zener
16
cooled and then comes back on
with current reduced to 76%.
Subsequent OTP triggers will
reduce I OUT further
FN7630.1
September 14, 2011
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相关代理商/技术参数 |
参数描述 |
|---|---|
| ISL97676IRZ | 制造商:Intersil Corporation 功能描述:6-CH LED DRIVER WITH PHASE SHIFT CONTROL - Rail/Tube 制造商:Intersil 功能描述:6-CH LED DRVR W/PHS SHIFT CNTRL |
| ISL97676IRZ-T | 制造商:Intersil Corporation 功能描述:6-CH LED DRIVER WITH PHASE SHIFT CONTROL T&R - Tape and Reel 制造商:Intersil 功能描述:6-CH LED DRVR W/PHS SHIFT CNTRL |
| ISL97676IRZ-TK | 制造商:Intersil Corporation 功能描述:6-CH LED DRIVER WITH PHASE SHIFT CONTROL 1K T&R - Tape and Reel 制造商:Intersil 功能描述:6-CH LED DRVR W/PHS SHIFT CNTRL |
| ISL97677IRZ | 功能描述:IC LED DVR PWM CTRL 8CH 32QFN 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 |
| ISL97677IRZ-T | 功能描述:IC LED DVR PWM CTRL 8CH 32QFN 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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