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参数资料
| 型号： | MIC2776N-BM5 TR |
| 厂商： | Micrel Inc |
| 文件页数： | 1/8页 |
| 文件大小： | 0K |
| 描述： | IC SUPERVISOR ADJ MCRPWR SOT23-5 |
| 标准包装： | 3,000 |
| 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： | 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： | MIC2776N-BM5TR |
MIC2776
General Description
The MIC2776 is a power supply supervisor which provides
under-voltage monitoring and power-on reset generation in a
compact 5-pin SOT package. Features include an adjustable
under-voltage detector, a delay-generator, a manual reset
input, and a choice of active-high, active-low, or open-drain
active-low reset output. The user-adjustable monitoring input
is compared against a 300mV reference. This low reference
voltage allows monitoring voltages lower than those supported
by previous supervisor ICs.
The reset output is asserted for no less than 140ms at power-
on and any time the input voltage drops below the reference
voltage. It remains asserted for the timeout period after the
input voltage subsequently rises back above the threshold
boundary. A reset can be generated at any time by asserting
the manual reset input, /MR. The reset output will remain ac-
tive at least 140ms after the release of /MR. The /MR input
can also be used to daisy-chain the MIC2776 onto existing
power monitoring circuitry or other supervisors. Hysteresis
is included to prevent chattering due to noise. Typical supply
current is a low 3.0μA.
Micrel, Inc.
MIC2776
Micro-Power Low Voltage Supervisor
Features
? User-adjustable input can monitor supplies as low as
0.3V
? ±1.5% threshold accuracy
? Separate V DD input
? Generates power-on reset pulse (140ms min.)
? Manual reset input
? Choice of active-high, active-low or open-drain active-
low reset output
? Inputs can be pulled above V DD (7V abs. max.)
? Open-drain output can be pulled above V DD (7V abs.
max.)
? Ultra-low supply current, 3.0μA typical
? Rejects brief input transients
? IttyBitty? SOT-23-5 package
Applications
? Monitoring processor, ASIC, or FPGA core voltage
? Computer systems
? PDAs/Hand-held PCs
? Embedded controllers
? Telecommunications systems
? Power supplies
? Wireless / cellular systems
? Networking hardware
Typical Application
V CORE 1.0V
V I/O 2.5V
Power_Good
R1
R2
MIC2776L
VDD /RST
IN
/MR
GND
MICROPROCESSOR
VCORE
VI/O
/RESET GND
Manual
Reset
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
November 2005
1
MIC2776
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MIC2776N-BM5TX | 制造商:RF Micro Devices Inc 功能描述: |
| MIC2776NYM5 | 制造商:Micrel Inc 功能描述: |
| MIC2776N-YM5 | 制造商:Rochester Electronics LLC 功能描述: 制造商:RF Micro Devices Inc 功能描述: 制造商:Micrel Inc 功能描述: |
| MIC2776N-YM5 TR | 功能描述:监控电路 Adjustable Voltage Supervisor with 0.3V Threshold, Manual Reset and Active-Low Open-Drain Output in SOT23-5 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 |
| MIC2776N-YM5TR | 制造商:Micrel 功能描述:Volt Supervisor Supply Micropower |
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