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參數資料
| 型號： | MIC2777-XXBM5 |
| 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控進展信息 |
| 文件頁數： | 1/8頁 |
| 文件大小： | 375K |
| 代理商： | MIC2777-XXBM5 |
September 29, 2000
1
MIC2777
MIC2777
Micrel
MIC2777
Dual Micro-Power Low Voltage Supervisor
Advance Information
General Description
The MIC2777 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 both active-high and active-low reset out-
puts. One under-voltage detector compares V
DD
against a
fixed threshold. Ten factory-programmed thresholds are avail-
able. The other under-voltage detector is user-adjustable.
The reset outputs are asserted for no less than 140ms at
power-on and any time V
DD
or the input voltage drops below
the corresponding reference voltage. They remain asserted
for the timeout period after the input voltage and V
DD
subse-
quently rise back above the threshold boundaries. A reset
can be generated at any time by pulling down on the adjust-
able input. Hysteresis is included to prevent chattering due to
noise. Typical supply current is a low 3.5
μ
A.
Typical Application
IN
R1
R2
/RST
VDD
RST
OTHER
LOGIC
MIC2777
MICROPROCESSOR
V
CORE
V
I/O
Manual
Reset
/RESET
V
CORE
1.0V
V
I/O
1.8V
GND
GND
Typical Application
Features
Monitors two independent power supplies for under-
voltage conditions
One fixed and one user adjustable input
1.5% theshold accuracy
Choice of factory-programmed thresholds
User-adjustable input can monitor supplies as low as
0.3V
Generates 140ms (minimum) power-on RESET pulse
Manual reset capability
Both active-high and active-low RESET outputs
Input may be pulled above V
DD
(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
Applications
Monitoring processor, ASIC, or FPGA core and I/O
voltages
Computer systems
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
MIC2777-XXBM5
Marking
UNXX
Junction Temp. Range
–40
°
C to +85
°
C
Package
SOT-23-5
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相關代理商/技術參數 |
參數描述 |
|---|---|
| MIC2778-1BM5 | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| MIC2778-1BM5 TR | 功能描述:IC SUPERVISOR ADJ HYSTER SOT23-5 RoHS:否 類別:集成電路 (IC) >> PMIC - 監控器 系列:- 標準包裝:1 系列:- 類型:簡單復位/加電復位 監視電壓數目:1 輸出:開路漏極或開路集電極 復位:低有效 復位超時:標準傳輸延遲為 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 供應商設備封裝:SOT-23-5 包裝:Digi-Reel® 其它名稱:LM8364BALMF30DKR |
| MIC2778-1YM5 | 制造商:Rochester Electronics LLC 功能描述: 制造商:RF Micro Devices Inc 功能描述: |
| MIC2778-1YM5 TR | 功能描述:監控電路 V-Supervisor w/Adj. Hysteresis, Open-Drain Ouput, 1% Accuracy (Lead Free) RoHS:否 制造商:STMicroelectronics 監測電壓數: 監測電壓: 欠電壓閾值: 過電壓閾值: 輸出類型:Active Low, Open Drain 人工復位:Resettable 監視器:No Watchdog 電池備用開關:No Backup 上電復位延遲（典型值）:10 s 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:UDFN-6 封裝:Reel |
| MIC2778-1YM5-TR | 功能描述:Supervisor Open Drain or Open Collector 1 Channel SOT-23-5 制造商:microchip technology 系列:- 包裝:剪切帶（CT） 零件狀態:有效 類型:簡單復位/加電復位 受監控電壓數:1 輸出:開路漏極或開路集電極 復位:低有效 復位超時:最小為 140 ms 電壓 - 閾值:可調節/可選擇 工作溫度:-40°C ~ 85°C（TA） 安裝類型:表面貼裝 封裝/外殼:SC-74A，SOT-753 供應商器件封裝:SOT-23-5 標準包裝:1 |
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