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参数资料
| 型号： | ICL7665SCBAZA-T |
| 厂商： | Intersil |
| 文件页数： | 9/14页 |
| 文件大小： | 0K |
| 描述： | IC VOLT DETECTOR OVER/UND 8-SOIC |
| 标准包装： | 1 |
| 类型： | 多压监控器 |
| 监视电压数目： | 2 |
| 输出： | 开路漏极或开路集电极 |
| 复位： | 高有效 |
| 电压 - 阀值： | 可调节/可选择 |
| 工作温度： | 0°C ~ 70°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-SOIC（0.154"，3.90mm 宽） |
| 供应商设备封装： | 8-SOIC |
| 包装： | 标准包装 |
| 其它名称： | ICL7665SCBAZA-TDKR |
ICL7665S
V IN
Applications
Single Supply Fault Monitor
R P
V+
R P
Figure 12 shows an over/under voltage fault monitor for a
single supply. The overvoltage trip point is centered around
R 21
R 31
OUT1
HYST1
SET1
OUT2
HYST2
SET2
R 32
R 22
5.5V and the undervoltage trip point is centered around 4.5V.
Both have some hysteresis to prevent erratic output ON and
OFF conditions. The two outputs are connected in a wired
OR configuration with a pull-up resistor to generate a power
OK signal.
R 11
R 12
+5V SUPPLY
FIGURE 11. AN ALTERNATIVE HYSTERESIS CIRCUIT
R 21
324k Ω
V+
249k Ω
R 22
HYST1
HYST2
TABLE 1. SET-POINT EQUATIONS
NO HYSTERESIS
13M Ω
5%
R 31
V SET1
V SET2
R 32
7.5M Ω
5%
Overvoltage V TRIP =
R 11 + R 21
R 11
x V SET1
100k Ω
OUT1
OUT2
100k Ω
OPEN VOLTAGE
R 12 + R 22
Overvoltage V TRIP =
R 12
HYSTERESIS PER FIGURE 10A
x V SET2
OPEN VOLTAGE
DETECTOR
V U = 5.55V
V L = 5.45V
V+
1M Ω
DETECTOR
V U = 4.55V
V L = 4.45V
POWER
V U1 =
R 11 + R 21 + R31
R 11
x V SET1
OK
FIGURE 12. FAULT MONITOR FOR A SINGLE SUPPLY
Overvoltage V TRIP
V L1 =
V U2 =
R 11 + R 21
x V SET1
R 11
R 12 + R 22 + R 3 2
x V SET2
R 12
Multiple Supply Fault Monitor
The ICL7665S can simultaneously monitor several supplies
when connected as shown in Figure 13. The resistors are
chosen such that the sum of the currents through R 21A ,
Undervoltage V TRIP
R 12 + R 22
V L2 = x V SET2
R 12
HYSTERESIS PER FIGURE 11
R 21B , and R 31 is equal to the current through R 11 when the
two input voltage are at the desired low voltage detection
point. The current through R 11 at this point is equal to
1.3V/R 11 . The voltage at the V SET input depends on the
voltage of both supplies being monitored. The trip voltage of
V U1 =
R 11 + R 21
R 11
x V SET1
one supply while the other supply is at the nominal voltage
will be different that the trip voltage when both supplies are
Overvoltage V TRIP
below their nominal voltages.
V L1 =
R 11 +
R 21 R 31
R 21 + R 31 x V SET1
R 11
The other side of the ICL7665S can be used to detect the
absence of negative supplies. The trip points for OUT1
depend on both the negative supply voltages and the actual
voltage of the +5V supply.
V U2 =
R 12 + R 22
R 12
x V SET2
Overvoltage V TRIP
V L2 =
R 12 +
R 22 R 32
R 22 + R 32 x V SET2
R 12
9
FN3182.9
July 22, 2013
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相关代理商/技术参数 |
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| ICL7665SCBAZ-T | 功能描述:电压监测器/监控器 CMOS OVER/UNDER V DETECTOR 8 COIC COM RoHS:否 制造商:Texas Instruments 监测电压数:2 监测电压:Adjustable 输出类型:Open Drain 欠电压阈值: 过电压阈值: 准确性:1 % 工作电源电压:1.5 V to 6.5 V 工作电源电流:1.8 uA 最大工作温度:+ 125 C 封装 / 箱体:SON-6 安装风格:SMD/SMT |
| ICL7665SCPA | 功能描述:电压监测器/监控器 CMOS OVER/UNDER V DETECTOR COM RoHS:否 制造商:Texas Instruments 监测电压数:2 监测电压:Adjustable 输出类型:Open Drain 欠电压阈值: 过电压阈值: 准确性:1 % 工作电源电压:1.5 V to 6.5 V 工作电源电流:1.8 uA 最大工作温度:+ 125 C 封装 / 箱体:SON-6 安装风格:SMD/SMT |
| ICL7665SCPAZ | 功能描述:电压监测器/监控器 W/ANNEAL CMOS OVER/ UNDER V DETECTOR RoHS:否 制造商:Texas Instruments 监测电压数:2 监测电压:Adjustable 输出类型:Open Drain 欠电压阈值: 过电压阈值: 准确性:1 % 工作电源电压:1.5 V to 6.5 V 工作电源电流:1.8 uA 最大工作温度:+ 125 C 封装 / 箱体:SON-6 安装风格:SMD/SMT |
| ICL7665SIBA | 功能描述:IC VOLT DETECTOR OVER/UND 8-SOIC RoHS:否 类别:集成电路 (IC) >> PMIC - 监控器 系列:- 标准包装:100 系列:- 类型:简单复位/加电复位 监视电压数目:1 输出:- 复位:低有效 复位超时:最小为 100 ms 电压 - 阀值:4.38V 工作温度:0°C ~ 70°C 安装类型:表面贴装 封装/外壳:8-TSSOP（0.173"，4.40mm 宽） 供应商设备封装:8-TSSOP 包装:管件 |
| ICL7665SIBA-T | 功能描述:电压监测器/监控器 CMOS OVER/UNDER V DETECTOR IND TAPE & RoHS:否 制造商:Texas Instruments 监测电压数:2 监测电压:Adjustable 输出类型:Open Drain 欠电压阈值: 过电压阈值: 准确性:1 % 工作电源电压:1.5 V to 6.5 V 工作电源电流:1.8 uA 最大工作温度:+ 125 C 封装 / 箱体:SON-6 安装风格:SMD/SMT |
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