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参数资料
| 型号： | MIC2774H-44M5 |
| 厂商： | MICREL INC |
| 元件分类： | 电源管理 |
| 英文描述： | 2-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO5 |
| 封装： | LEAD FREE, SOT-23, 5 PIN |
| 文件页数： | 1/8页 |
| 文件大小： | 188K |
| 代理商： | MIC2774H-44M5 |
January 2005
1
M9999-011405
MIC2774
Micrel
MIC2774
Dual Micro-Power Low Voltage Supervisor
General Description
The MIC2774 is a dual power supply supervisor that pro-
vides under-voltage monitoring, manual reset capability, and
power-on reset generation in a compact 5-pin SOT package.
Features include two under-voltage detectors, one xed and
one adjustable, and a choice of reset outputs. One under-
voltage detector compares VDDagainstaxedthreshold.Ten
factory-programmed thresholds are available. The second,
user-adjustableinputiscomparedagainsta300mVreference.
This low reference voltage allows monitoring voltages lower
than those supported by previous supervisor ICs.
The reset outputs are asserted at power-on and any time
either voltage drops below the programmed threshold volt-
ages and remains asserted for 140ms (min.) after they
subsequently rise back above the threshold boundaries.
Manual reset functionality can be provided by a switch con-
nected between ground and the /MR input. A wide choice of
voltage thresholds provides for a variety of supply voltages
and tolerances. Hysteresis is included to prevent chattering
due to noise. Typical supply current is a low 3.5A.
Typical Application
IN
/RST
VDD
/MR
GND
MIC2774L-23
R1
R2
/RESET
VCORE
GND
Power_Good
VCORE 1.0V
Manual
Reset
MICROPROCESSOR
VI/O
VI/O 2.5V
Features
Monitors two independent power supplies for under-volt-
age conditions
One xed and one user adjustable input
Choice of factory-programmed thresholds
Adjustable input can monitor supplies as low as 0.3V
Generates 140ms (minimum) power-on reset pulse
Manual reset input
Choice of active-high, active-low, or open-drain active-
low reset outputs
Inputs may be pulled above VDD (7V abs. max.)
Open-drain output can be pulled above VDD (7V abs
max.)
/RST output valid down to 1.2V
Ultra-low supply current, 3.5A typical
Rejects brief input transients
IttyBitty 5-lead SOT-23 package
Pin compatible upgrade for MAX6306/09/12
Applications
Monitoring processor ASIC, or FAGA core and I/O volt-
ages
PDAs, hand-held PCs
Embedded controllers
Telecommunications systems
Power supplies
Wireless / Cellular systems
Networking hardware
Micrel, Inc. 2180 Fortune Drive San Jose, CA 95131 USA tel + 1 (408) 944-0800 fax + 1 (408) 474-1000 http://www.micrel.com
IttyBitty is a trademark of Micrel, Inc.
Ordering Information
Part Number
Reset Output
Temperature
Range
Package
Standard
Marking Pb-Free
Marking
MIC2774N-XXBM5 UGXX* MIC2774N-XX M5 UGXX*
Open-Drain. Active-Low (/RST)
-40°C to +85°C SOT-23-5
MIC2774H-XXBM5 UHXX*
MIC2774H-XX M5 UHXX*
Active-High. Complementary (RST)
-40°C to +85°C SOT-23-5
MIC2774L-XXBM5 UIXX*
MIC2774L-XX M5 UIXX*
Active-Low. Complementary (/RST)
-40°C to +85°C SOT-23-5
* XX = Voltage options, see table on page 2. Underscore indicates a Pb-Free part.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MIC2774H-44YM5 TR | 功能描述:监控电路 Dual Voltage Supervisor with 0.3V and 4.43V Thresholds, Active-High Push-Pull Output, 140ms Reset Pulse, Manual 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 |
| MIC2774H-46BM5 | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| MIC2774H-46BM5 TR | 功能描述:IC SUPERVISOR DUAL LV 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 |
| MIC2774H-46YM5 TR | 功能描述:监控电路 Dual Voltage Supervisor with 0.3V and 4.68V Thresholds, Active-High Push-Pull Output, 140ms Reset Pulse, Manual 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 |
| MIC2774L-17BM5 | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
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