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| 型号： | MIC2775-31YM5 TR |
| 厂商： | Micrel Inc |
| 文件页数： | 6/7页 |
| 文件大小： | 0K |
| 描述： | IC SUPERVISOR MICROPOWER SOT23-5 |
| 标准包装： | 1 |
| 类型： | 简单复位/加电复位 |
| 监视电压数目： | 1 |
| 输出： | 补充型 |
| 复位： | 高有效/低有效 |
| 复位超时： | 最小为 140 ms |
| 电压 - 阀值： | 3.09V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | SC-74A，SOT-753 |
| 供应商设备封装： | SOT-23-5 |
| 包装： | 标准包装 |
| 产品目录页面： | 1112 (CN2011-ZH PDF) |
| 其它名称： | 576-2682-6 |
Transient Response
MIC2775
Application Information
Ensuring Proper Operation at Low Supply
At levels of V DD below 1.2V, the MIC2775’s /RST output can-
not turn on sufficiently to produce a valid logic-low on /RST.
In this situation, circuits driven by /RST could be allowed to
float, causing undesired operation. (In most cases, however,
it is expected that the circuits driven by the MIC2775 will be
similarly inoperative at V DD ≤ 1.2V.)
If a given application requires that /RST be valid below V DD
= 1.2V, this can be accomplished by adding a pull-down re-
sistor to the /RST output. A value of 100kΩ is recommended
as this is usually an acceptable compromise of quiescent
current and pull-down current. The resistor ’s value is not
critical, however. See Figure 1.
Micrel, Inc.
Transient response
The MIC2775 is inherently immune to very short negative-
going “glitches.” Very brief transients may exceed the voltage
threshold without tripping the output.
As shown in Figure 3, in general the narrower the transient,
the deeper the threshold overdrive that will be ignored by
the MIC2775. The graph represents the typical allowable
transient duration for a given amount of threshold overdrive
that will not generate a reset.
Typical V DD
100
80
60
V CC
MIC2775-XX
MICROPROCESSOR
VCC
40
20
0
500
1000
1500
2000
VDD
/MR
/RST
RST
GND
100k
/RESET GND
0
RESET COMP. OVERDRIVE, V REF –V DD (mV)
Figure 3. Typical V DD Transient Response
Manual
Reset
Figure 1. MIC2775 Valid /Reset Below 1.2V
The statements above also apply to the MIC2775’s RST
output. That is, to ensure valid RST signal levels at V DD <
1.2V, a pull-up resistor (as opposed to a pull-down) should
be added to the RST output. A value of 100kΩ is typical for
this application as well. See Figure 2.
V CC
MIC2775-XX
MICROPROCESSOR
VCC
100k
VDD
/MR
/RST
RST
GND
/RESET GND
Manual
Reset
Figure 2. MIC2775 Valid Reset Below 1.2V
MIC2775
6
June 2009
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相关代理商/技术参数 |
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|---|---|
| MIC2775-44BM5 TR | 功能描述:IC SUPERVISOR MICROPOWER SOT23-5 RoHS:否 类别:集成电路 (IC) >> PMIC - 监控器 系列:- 标准包装:1 系列:- 类型:简单复位/加电复位 监视电压数目:1 输出:开路漏极或开路集电极 复位:低有效 复位超时:标准传输延迟为 60 µs 电压 - 阀值:3V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:SC-74A，SOT-753 供应商设备封装:SOT-23-5 包装:Digi-Reel® 其它名称:LM8364BALMF30DKR |
| MIC2775-44YM5 TR | 功能描述:监控电路 Single Voltage Supervisor with Dual Active-High and Low Push-Pull Outputs, Manual Reset, 4.43V Threshold, 140ms Reset SOT23-5 (Lead Free) RoHS:否 制造商:STMicroelectronics 监测电压数: 监测电压: 欠电压阈值: 过电压阈值: 输出类型:Active Low, Open Drain 人工复位:Resettable 监视器:No Watchdog 电池备用开关:No Backup 上电复位延迟（典型值）:10 s 电源电压-最大:5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:UDFN-6 封装:Reel |
| MIC2775-44YM5-TR | 功能描述:Supervisor Complementary 1 Channel SOT-23-5 制造商:microchip technology 系列:- 包装:剪切带（CT） 零件状态:停产 类型:简单复位/加电复位 受监控电压数:1 输出:补充型 复位:高有效/低有效 复位超时:最小为 140 ms 电压 - 阈值:4.43V 工作温度:-40°C ~ 85°C（TA） 安装类型:表面贴装 封装/外壳:SC-74A，SOT-753 供应商器件封装:SOT-23-5 标准包装:1 |
| MIC2775-46BM5 | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| MIC2775-46BM5 TR | 功能描述:IC SUPERVISOR MICROPOWER SOT23-5 RoHS:否 类别:集成电路 (IC) >> PMIC - 监控器 系列:- 标准包装:1 系列:- 类型:简单复位/加电复位 监视电压数目:1 输出:开路漏极或开路集电极 复位:低有效 复位超时:标准传输延迟为 60 µs 电压 - 阀值:3V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:SC-74A，SOT-753 供应商设备封装:SOT-23-5 包装:Digi-Reel® 其它名称:LM8364BALMF30DKR |
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