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| 型号： | LTC2905HDDB#TRPBF |
| 厂商： | LINEAR TECHNOLOGY CORP |
| 元件分类： | 电源管理 |
| 英文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO8 |
| 封装： | 3 X 2 MM, LEAD FREE, PLASTIC, MO-229WECD-1, DFN-8 |
| 文件页数： | 1/16页 |
| 文件大小： | 151K |
| 代理商： | LTC2905HDDB#TRPBF |
LTC2904/LTC2905
1
29045fd
TYPICAL APPLICATION
DESCRIPTION
Precision Dual Supply
Monitors with Pin-Selectable
Thresholds
The LTC2904/LTC2905 are dual supply monitors in-
tended for systems with two supply voltages. The dual
supply monitors have a common reset output with delay
(200ms for the LTC2904 and adjustable using an exter-
nal capacitor for the LTC2905). This product provides a
precise, space-conscious and micropower solution for
supply monitoring.
The LTC2904/LTC2905 feature a tight 1.5% threshold
accuracy over the whole operating temperature range, and
glitch immunity to ensure reliable reset operation without
false triggering. The open drain RST output is guaranteed
to be in the correct state for inputs down to 1V.
The LTC2904/LTC2905 also feature three programming
input pins, which program the threshold and tolerance level
without requiring any external components. These three
programming pins provide a total of 27 different voltage
level and tolerance combinations, eliminating the need to
have different parts for development and implementation
of different systems with different voltage levels requiring
monitoring function.
5V, 3.3V Dual Supply Monitor with 5% Tolerance
FEATURES
APPLICATIONS
n Monitors Two Inputs Simultaneously
n Nine Threshold Combinations
n Three Supply Tolerances (5%, 7.5%, 10%)
n Guaranteed Threshold Accuracy:
±1.5% of
Monitored Voltage Over Temperature
n Internal VCC Auto Select
n Power Supply Glitch Immunity
n 200ms Reset Time Delay (LTC2904 Only)
n Adjustable Reset Time Delay (LTC2905 Only)
n Open Drain RST Output
n Guaranteed RST for V1 ≥ 1V or V2 ≥ 1V
n Low Prole (1mm) SOT-23 (ThinSOT) and
Plastic (3mm
× 2mm) DFN Packages
n Desktop and Notebook Computers
n Handheld Devices
n Network Servers
n Core, I/O Monitor
Table 1. Voltage Threshold Programming
V1
V2
S1
S2
5.0
3.3
V1
3.3
2.5
Open
GND
3.3
1.8
V1
Open
3.3
1.5
Open
V1
3.3
1.2
Open
2.5
1.8
GND
2.5
1.5
GND
Open
2.5
1.2
GND
V1
2.5
1.0
V1
GND
V1
S1
S2
TOL
V2
TMR
GND
RST
LTC2905
22nF
0.1μF
DC/DC
CONVERTER
SYSTEM
LOGIC
29045 TA01
3.3V
5V
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear
Technology Corporation. ThinSOT is a trademark of Linear Technology Corporation.
All other trademarks are the property of their respective owners.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LTC2905HTS8#PBF | 制造商:Linear Technology 功能描述:IC SUPPLY MONITOR 65A 5.5V TSOT23-8 制造商:Linear Technology 功能描述:MS-System Monitor/Supervisor, Cut Tape Dual Supply Monitor 制造商:Linear Technology 功能描述:IC, SUPPLY MONITOR, 65 uA, 5.5V, TSOT23-8, Threshold Voltage:4.75V, No. of Supervisors / Monitors:2, Supply Voltage Min:1V, Supply Voltage Max:5.5V, Reset Type:Active-Low, Open-Drain, Digital IC Case Style:TSOT-23, No. of Pins:8 , RoHS Compliant: Yes |
| LTC2905HTS8#TRMPBF | 功能描述:IC PWR SUPPLY MON DUAL TSOT23-8 RoHS:是 类别:集成电路 (IC) >> PMIC - 监控器 系列:- 标准包装:400 系列:- 类型:备用电池电路 监视电压数目:1 输出:开路漏极，推挽式 复位:高有效/低有效 复位超时:最小为 35 ms 电压 - 阀值:4.65V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:16-SOIC（0.295"，7.50mm 宽） 供应商设备封装:16-SOIC W 包装:带卷 (TR) 其它名称:ADM691ARZ-REEL7TR |
| LTC2905HTS8#TRPBF | 功能描述:IC PWR SUPPLY MON DUAL TSOT23-8 RoHS:是 类别:集成电路 (IC) >> PMIC - 监控器 系列:- 标准包装:400 系列:- 类型:备用电池电路 监视电压数目:1 输出:开路漏极，推挽式 复位:高有效/低有效 复位超时:最小为 35 ms 电压 - 阀值:4.65V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:16-SOIC（0.295"，7.50mm 宽） 供应商设备封装:16-SOIC W 包装:带卷 (TR) 其它名称:ADM691ARZ-REEL7TR |
| LTC2905IDDB#PBF | 制造商:Linear Technology 功能描述:MONITOR 60uA 7V DFN-8 制造商:Linear Technology 功能描述:MONITOR, 60uA, 7V, DFN-8 制造商:Linear Technology 功能描述:MS-System Monitor/Supervisor, Cut Tape Dual Supply Monitor 制造商:Linear Technology 功能描述:MONITOR, 60uA, 7V, DFN-8, No. of Supervisors / Monitors:2, Supply Voltage Min:1V, Supply Voltage Max:7V, Reset Type:Active-Low, Open-Drain, Digital IC Case Style:DFN, No. of Pins:8, Supply Current:65A, Operating Temperature Max:85C, RoHS Compliant: Yes |
| LTC2905IDDB#TR | 功能描述:IC MONITOR DUAL SUPPLY PREC 8DFN RoHS:否 类别:集成电路 (IC) >> PMIC - 监控器 系列:- 标准包装:400 系列:- 类型:备用电池电路 监视电压数目:1 输出:开路漏极，推挽式 复位:高有效/低有效 复位超时:最小为 35 ms 电压 - 阀值:4.65V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:16-SOIC（0.295"，7.50mm 宽） 供应商设备封装:16-SOIC W 包装:带卷 (TR) 其它名称:ADM691ARZ-REEL7TR |
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