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參數資料
| 型號： | LTH2911HDDB-3#TRMPBF |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | 電源管理 |
| 英文描述： | POWER SUPPLY SUPPORT CKT, PDSO8 |
| 封裝： | 3 X 2 MM, LEAD FREE, PLASTIC, MO-229, DFN-8 |
| 文件頁數： | 1/20頁 |
| 文件大小： | 245K |
| 代理商： | LTH2911HDDB-3#TRMPBF |
LTC2911
1
2911f
TYPICAL APPLICATION
DESCRIPTION
Precision Triple Supply
Monitor with Power-Fail
Comparator
The LTC2911 is a low power, high accuracy triple supply
monitor with a power-fail comparator. Reset timeout may
beselectedwithanexternalcapacitororsettoaninternally
generated 200ms.
The V1 pin monitors a 3.3V supply. The V2 pin monitors a
5V, 2.5V, 1.8V, 1.2V or adjustable supply. A third adjustable
input has a nominal 0.5V threshold allowing a resistive
divider to configure its threshold. All three comparators
feature a tight 1.5% threshold accuracy over the entire
operating temperature range while a glitch filter ensures
reliable reset operation.
A spare comparator can be configured to provide early
warningofalowvoltagecondition.ItcausesthePFOoutput
topulllowwhenthevoltageofthePFIinputfallsbelow0.5V,
allowing the power-fail threshold to be configured with
a resistive divider. A latch feature on the TMR pin allows
the RST output to be latched to prevent system resets,
simplifying margin testing.
FEATURES
APPLICATIONS
n
Ultralow Voltage Reset: VCC = 0.5V Guaranteed
n
Monitors Three Inputs Simultaneously:
3.3V, 5V, ADJ (LTC2911-1)
3.3V, 2.5V, ADJ (LTC2911-2)
3.3V, 1.8V, ADJ (LTC2911-3)
3.3V, 1.2V, ADJ (LTC2911-4)
3.3V, ADJ, ADJ (LTC2911-5)
n
±1.5% Threshold Accuracy
n
Power-Fail Monitor
n
RST State Can Be Held for Margining
n
Low Supply Current: 30A Typical
n
Input Glitch Immunity
n
Adjustable Reset Timeout Period
n
Selectable Internal Timeout Saves Components
n
Space Saving 8-Lead TSOT-23 and 3mm
× 2mm DFN
Packages
n
Network Servers
n
Desktop and Notebook Computers
n
Automotive and Industrial Electronics
RST Output Voltage With 10k Pull-Up to V1
+
LTC2911-2
76.8k
10k
3.3V
2.5V
1.0V
100k
576k
Li-Ion
BATTERY
STACK
100k
V1
TMR
V2
ADJ
RESET
LOBAT
RST
PFO
PFI
tRST = 200ms
2911 TA01a
GND
SYSTEM
LOGIC
DC/DC
CONVERTER
L
, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear
Technology Corporation. All other trademarks are the property of their respective owners.
Protected by U.S. Patents, including 6949965, 7292076.
V1 (V)
0
V RST
(V)
2
4
6
1
3
5
0.5
1.5
2.5
3.5
2911 TA01b
5.5
0
1
2
3
4 4.5 5
V1 = V2
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相關代理商/技術參數 |
參數描述 |
|---|---|
| LTH-301-05 | 功能描述:光學開關（透射型，光電晶體管輸出） Photointerrupter Phototransistor RoHS:否 制造商:Omron Electronics 輸出設備:Phototransistor 槽寬:3.4 mm 光圈寬度:0.5 mm 集電極—發射極最大電壓 VCEO:30 V 最大集電極電流:20 mA 正向電流: 安裝風格:Through Hole 最大工作溫度:+ 85 C 最小工作溫度:- 25 C 封裝: |
| LTH-301-07 | 功能描述:光學開關（透射型，光電晶體管輸出） Photointerrupter Phototransistor RoHS:否 制造商:Omron Electronics 輸出設備:Phototransistor 槽寬:3.4 mm 光圈寬度:0.5 mm 集電極—發射極最大電壓 VCEO:30 V 最大集電極電流:20 mA 正向電流: 安裝風格:Through Hole 最大工作溫度:+ 85 C 最小工作溫度:- 25 C 封裝: |
| LTH301-07 | 制造商:Lite-On Semiconductor Corporation 功能描述: |
| LTH-301-07P1 | 制造商:LITEON 制造商全稱:Lite-On Technology Corporation 功能描述:Property of LITE-ON Only |
| LTH-301-07P2 | 制造商:LITEON 制造商全稱:Lite-On Technology Corporation 功能描述:Property of LITE-ON Only |
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