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参数资料
| 型号： | MIC2779L-1BM5 TR |
| 厂商： | Micrel Inc |
| 文件页数： | 1/6页 |
| 文件大小： | 0K |
| 描述： | IC SUPERVISOR ADJ HYSTER SOT23-5 |
| 标准包装： | 3,000 |
| 类型： | 多压监控器 |
| 监视电压数目： | 2 |
| 输出： | 推挽式，图腾柱 |
| 复位： | 低有效 |
| 复位超时： | 最小为 140 ms |
| 电压 - 阀值： | 可调节/可选择 |
| 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： | 带卷 (TR) |
| 其它名称： | MIC2779L-1BM5TR MIC2779L-1BM5TR-ND |
MIC2779
General Description
The MIC2779 is a voltage monitor—uniquely designed to
detect two separate voltage thresholds—combined with a
delay generator and logic. It is designed for monitoring the
battery supply of portable digital systems, particularly PDAs,
pagers, and cellular telephones.
High- and low-voltage thresholds can be adjusted inde-
pendently, allowing for wide hysteresis. Voltage detection
thresholds are accurate to 2%.
If the battery voltage falls below the low-voltage threshold,
the output /RST or RST is asserted and latched, preventing
system operation until the battery is replaced or recharged.
Internal logic prevents the output from chattering due to battery
recovery or load removal. The output is asserted for 140ms
(minimum) when a fresh battery is inserted. For applications
requiring open-drain output, see MIC2778/MIC833.
The IC’s power supply input is separate from the detector
inputs, allowing the MIC2779 to be powered from a down-
stream supply, such a boost converter. Supply current is
extremely low (1μA, typical), making it ideal for portable
applications.
A high-precision 1% grade is available. The MIC2779 is sup-
plied in Micrel’s IttyBitty? 5-pin SOT-23-5 package.
Micrel, Inc.
MIC2779
Voltage Monitor with Adjustable Hysteresis
Features
? Optimized for PDAs, cellular telephones, pagers,
and other battery-powered devices
? Independently adjustable high- and
low-voltage thresholds
? Internal logic prevents battery-voltage-?uctuation chatter
? High ±2% voltage threshold accuracy; 1% available
? Built in 140ms (minimum) delay deglitches output
? Extremely low 1μA typical supply current
? For applications requiring open-drain output, see
MIC2778/MIC833
? Immune to brief power supply transients
? 5-pin SOT-23 package
Applications
? PDAs
? Pagers
? Cordless phones
? Consumer electronics
? Embedded controllers
? Personal electronics
BYP
GND
Typical Application
Li-Ion
Cell
604k
1%
56k
1%
MIC2779L
VDD / R S T
LTH
HTH GND
MIC5207-3.0BM5
IN OUT
470pF
EN
V OU T
3.0V
4.7μF
340k
1%
V BAT(hi) = 3.6V
V BAT(lo) = 3.1V
Cellular Telephone Battery Monitor
IttyBitty? is a trademark of Micrel, Inc.
Micrel, Inc. ? 2180 Fortune Drive ? San Jose, CA 95131 ? USA ? tel + 1 (408) 944-0800 ? fax + 1 (408) 474-1000 ? http://www.micrel.com
January 2006
1
MIC2779
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| MIC2779L-1YM5 TR | 功能描述:监控电路 V-Supervisor w/Adj. Hysteresis, Active-High Ouput, 1% Accuracy (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 |
| MIC2779L-1YM5-TR | 功能描述:Supervisor Push-Pull, Totem Pole 2 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:多压监控器 受监控电压数:2 输出:推挽式，图腾柱 复位:低有效 复位超时:最小为 140 ms 电压 - 阈值:可调节/可选择 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 |
| MIC2779L-2BM5 | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| MIC2779L-2BM5 TR | 功能描述:IC SUPERVISOR ADJ HYSTER 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 |
| MIC2779L-2YM5 TR | 功能描述:监控电路 V-Supervisor w/Adj. Hysteresis, Active-High Ouput, 1% Accuracy (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 |
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