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| 型号： | LTC2904IDDB8#PBF |
| 厂商： | LINEAR TECHNOLOGY CORP |
| 元件分类： | 电源管理 |
| 英文描述： | 2-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO8 |
| 封装： | 3 X 2 MM, M0-229WECD-1, PLASTIC, DFN-8 |
| 文件页数： | 1/16页 |
| 文件大小： | 179K |
| 代理商： | LTC2904IDDB8#PBF |
LTC2904/LTC2905
1
29045f
FEATURES
TYPICAL APPLICATIO
U
DESCRIPTIO
U
s
Monitors Two Inputs Simultaneously
s
Nine Threshold Combinations
s
Three Supply Tolerances (5%, 7.5%, 10%)
s
Guaranteed Threshold Accuracy:
±1.5% of
Monitored Voltage Over Temperature
s
Internal VCC Auto Select
s
Power Supply Glitch Immunity
s
200ms Reset Time Delay (LTC2904 Only)
s
Adjustable Reset Time Delay (LTC2905 Only)
s
Open Drain RST Output
s
Guaranteed RST for V1
≥ 1V or V2 ≥ 1V
s
Low Profile (1mm) SOT-23 (ThinSOT
TM) and Plastic
(3mm x 2mm) DFN Packages
s
Desktop and Notebook Computers
s
Handheld Devices
s
Network Servers
s
Core, I/O Monitor
Precision Dual Supply Monitor
with Pin-Selectable Thresholds
The LTC
2904/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 external
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.
, LTC and LT are registered trademarks of Linear Technology Corporation.
V1
S1
S2
TOL
V2
TMR
GND
RST
LTC2905
22nF
0.1
F
0.1
F
DC/DC
CONVERTER
SYSTEM
LOGIC
29045 TA01
3.3V
5V
5V, 3.3V Dual Supply Monitor with 5% Tolerance
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
APPLICATIO S
U
ThinSOT is a trademark of Linear Technology Corporation.
相关PDF资料 |
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| LTC2905CDDB8#PBF | 2-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO8 |
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| LTC2905HDDB#TRPBF | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO8 |
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| LTC2905ITS8#TRMPB | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO8 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| LTC2904ITS8 | 制造商:Linear Technology 功能描述:Volt Supervisor Monitor 3.3V/5V 8-Pin TSOT-23 |
| LTC2904ITS8#PBF | 制造商:Linear Technology 功能描述:Volt Supervisor Monitor 1V/1.2V/1.8V/2.5V/3.3V/5V 8-Pin TSOT-23 制造商:Linear Technology 功能描述:MS-System Monitor/Supervisor, Cut Tape Dual Supply Monitor |
| LTC2904ITS8#TR | 功能描述:IC MON DUAL SUPPLY PREC TSOT23-8 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 |
| LTC2904ITS8#TRM | 功能描述:IC MON DUAL SUPPLY PREC TSOT23-8 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 |
| LTC2904ITS8#TRMPBF | 功能描述:IC MON DUAL SUPPLY PREC 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 |
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