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参数资料
| 型号： | MIC2772-T3T3YML TR |
| 厂商： | Micrel Inc |
| 文件页数： | 6/9页 |
| 文件大小： | 0K |
| 描述： | IC RESET GENERATOR DUAL 8-MLF |
| 标准包装： | 5,000 |
| 类型： | 多压监控器 |
| 监视电压数目： | 2 |
| 输出： | 开路漏极，开路漏极 |
| 复位： | 低有效 |
| 复位超时： | 最小为 140 ms |
| 电压 - 阀值： | 3.08V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-VFDFN 裸露焊盘，8-MLF? |
| 供应商设备封装： | 8-MLF?（2x2） |
| 包装： | 带卷 (TR) |
| 其它名称： | MIC2772-T3T3YMLTR MIC2772-T3T3YMLTR-ND |
Micrel
Functional Block Diagram
VCC
MIC2772
MR1 (1)
VCC1 (8)
GND1 (2)
MR2 (3)
VCC2 (6)
Reset
Threshold (V)
VCC
+
+
RESET
GENERATOR
RESET
GENERATOR
RESET1 (7)
RESET2 (5)
Reset
Threshold (V)
GND2 (4)
MIC2772 Block Diagram
Application Information
Reset Output, /RESET
The /RESET pin is active low (open drain) pin. The
/RESET pin is asserted whenever VCC falls below
the reset threshold voltage or if /MR (manual reset)
is forced low. The /RESET pin remains asserted for
the duration of the threshold timeout period after
VCC has risen above the reset threshold and/or /MR
has returned high. The reset function ensures the
microprocessor is properly reset and power up in a
known condition after a power failure. /RESET will
remain valid with VCC as low as 1.0V.
The /RESET output is a simple open-drain N-
channel MOSFET structure. A pull-up resistor must
Manual Reset Input, /MR
The ability to initiate a reset via external logic or a
manual switch is provided in addition to the
MIC2772’s automatic supervisory functions. Driving
the /MR input to a logic low causes an immediate
and unconditional reset to occur. Assuming VCC is
within tolerance when /MR is released (returns high),
the /RESET output will be de-asserted no less than
t RESET later. /MR may be driven by a CMOS or TTL
logic signal, or a mechanical switch. Typically, a
momentary push-button switch is connected such
that /MR is shorted to ground when the switch
be used to pull this output to some voltage. For
contacts close.
Switch de-bouncing is performed
most applications, this voltage will be the same
power supply that supplies VCC to MIC2772. It is
possible however to tie this resistor to some other
voltage. This will allow the MIC2772 to monitor one
voltage while level-shifting the /RESET output to
some other voltage. The pull-up voltage must be
limited to 6.0V or less (absolute maximum) to avoid
damage to the MIC2772. The resistor must be small
enough to supply current to the inputs and leakage
paths that are driven by the /RESET output.
internally; the switch may be connected directly
between /MR and GND. /MR has an internal 20k ?
pull-up resistor (typical) to VCC and may be left
open if unused.
April 2005
6
M9999-042605
(408) 955-1690
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MIC2774H-17BM5 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-17BM5TR | 制造商:Rochester Electronics LLC 功能描述:- Tape and Reel |
| MIC2774H-17YM5 TR | 功能描述:监控电路 Dual Voltage Supervisor with 0.3V and 1.69V 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-22BM5 | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| MIC2774H-22BM5 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 |
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