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參數(shù)資料
| 型號： | MIC2772-T3T3BML |
| 廠商： | MICREL INC |
| 元件分類： | 電源管理 |
| 英文描述： | Dual Voltage Supervisor |
| 中文描述： | 2-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO8 |
| 封裝： | 2 X 2 MM, MLF-8 |
| 文件頁數(shù)： | 6/9頁 |
| 文件大小： | 226K |
| 代理商： | MIC2772-T3T3BML |
Micrel
MIC2772
Functional Block Diagram
+
Reset
Threshold (V)
VCC1 (8)
RESET1 (7)
RESET
GENERATOR
MR1 (1)
GND1 (2)
GND2 (4)
VCC
+
Reset
Threshold (V)
VCC2 (6)
RESET2 (5)
RESET
GENERATOR
MR2 (3)
VCC
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
be used to pull this output to some voltage. For
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.
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
contacts close. Switch de-bouncing is performed
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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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MIC2772-T3T3BML TR | 功能描述:IC RESET GENERATOR DUAL 8-MLF RoHS:否 類別:集成電路 (IC) >> PMIC - 監(jiān)控器 系列:- 標(biāo)準(zhǔn)包裝:1 系列:- 類型:簡單復(fù)位/加電復(fù)位 監(jiān)視電壓數(shù)目:1 輸出:開路漏極或開路集電極 復(fù)位:低有效 復(fù)位超時:標(biāo)準(zhǔn)傳輸延遲為 60 µs 電壓 - 閥值:3V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:SC-74A，SOT-753 供應(yīng)商設(shè)備封裝:SOT-23-5 包裝:Digi-Reel® 其它名稱:LM8364BALMF30DKR |
| MIC2772-T3T3YML TR | 功能描述:監(jiān)控電路 Dual Voltage Supervisor with Manual Reset and Active-Low Open-Drain Outputs3.08V / 140ms - 3.08V / 140ms - Lead Free RoHS:否 制造商:STMicroelectronics 監(jiān)測電壓數(shù): 監(jiān)測電壓: 欠電壓閾值: 過電壓閾值: 輸出類型:Active Low, Open Drain 人工復(fù)位:Resettable 監(jiān)視器:No Watchdog 電池備用開關(guān):No Backup 上電復(fù)位延遲（典型值）:10 s 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:UDFN-6 封裝:Reel |
| MIC2774H-17BM5 TR | 功能描述:IC SUPERVISOR DUAL LV SOT23-5 RoHS:否 類別:集成電路 (IC) >> PMIC - 監(jiān)控器 系列:- 標(biāo)準(zhǔn)包裝:1 系列:- 類型:簡單復(fù)位/加電復(fù)位 監(jiān)視電壓數(shù)目:1 輸出:開路漏極或開路集電極 復(fù)位:低有效 復(fù)位超時:標(biāo)準(zhǔn)傳輸延遲為 60 µs 電壓 - 閥值:3V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:SC-74A，SOT-753 供應(yīng)商設(shè)備封裝:SOT-23-5 包裝:Digi-Reel® 其它名稱:LM8364BALMF30DKR |
| MIC2774H-17BM5TR | 制造商:Rochester Electronics LLC 功能描述:- Tape and Reel |
| MIC2774H-17YM5 TR | 功能描述:監(jiān)控電路 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 監(jiān)測電壓數(shù): 監(jiān)測電壓: 欠電壓閾值: 過電壓閾值: 輸出類型:Active Low, Open Drain 人工復(fù)位:Resettable 監(jiān)視器:No Watchdog 電池備用開關(guān):No Backup 上電復(fù)位延遲（典型值）:10 s 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:UDFN-6 封裝:Reel |
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