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參數(shù)資料
| 型號： | MIC2774 |
| 廠商： | Micrel Semiconductor,Inc. |
| 英文描述： | Dual Micro-Power Low Voltage Supervisor Advance Information |
| 中文描述： | 雙路微功率低電壓監(jiān)控進(jìn)展信息 |
| 文件頁數(shù)： | 1/8頁 |
| 文件大小： | 381K |
| 代理商： | MIC2774 |
September 29, 2000
1
MIC2774
MIC2774
Micrel
MIC2774
Dual Micro-Power Low Voltage Supervisor
Advance Information
General Description
The MIC2774 is a dual power supply supervisor that provides
under-voltage monitoring, manual reset capability, and power-
on reset generation in a compact 5-pin SOT package. Fea-
tures include two under-voltage detectors, one fixed and one
adjustable, and a choice of reset outputs. One under-voltage
detector compares V
DD
against a fixed threshold. Ten fac-
tory-programmed thresholds are available. The second, user-
adjustable input is compared against a 300mV reference.
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
connected 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 3.5
μ
A.
Typical Application
IN
/RST
VDD
/MR
GND
MIC2774L-23
R1
R2
/RESET
VCORE
VI/O
GND
Power_Good
V
CORE
1.0V
Manual
Reset
MICROPROCESSOR
V
I/O
2.5V
Features
Monitors two independent power supplies for under-
voltage conditions
One fixed 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 V
DD
(7V abs. max.)
Open-drain output can be pulled above V
DD
(7V abs
max.)
/RST output valid down to 1.2V
Ultra-low supply current, 3.5
μ
A 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
voltages
PDAs, hand-held PCs
Embedded controllers
Telecommunications systems
Power supplies
Wireless / Cellular systems
Networking hardware
Micrel, Inc. 1849 Fortune Drive San Jose, CA 95131 USA tel + 1 (408) 944-0800 fax + 1 (408) 944-0970 http://www.micrel.com
IttyBitty is a trademark of Micrel, Inc.
Ordering Information
Part Number
MIC2774N-XXBM5
MIC2774H-XXBM5
MIC2774L-XXBM5
Marking
UGXX
UHXX
UIXX
Reset Output
Temperature Range
–40
°
C to +85
°
C
–40
°
C to +85
°
C
–40
°
C to +85
°
C
Package
SOT-23-5
SOT-23-5
SOT-23-5
Open-Drain, Active-Low (/RST)
Active-High, Complementary (RST)
Active-Low, Complementary (/RST)
相關(guān)PDF資料 |
PDF描述 |
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| MIC2775-XXBM5 | Micro-Power Voltage Supervisor Advance Information |
| MIC2775 | Micro-Power Voltage Supervisor Advance Information |
| MIC2777-XXBM5 | Dual Micro-Power Low Voltage Supervisor Advance Information |
| MIC2777 | Dual Micro-Power Low Voltage Supervisor Advance Information |
| MIC2779H-1BM5 | 3455RMG Series Phenolic Manual Reset Thermostats |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 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 |
| 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 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 |
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