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参数资料
| 型号： | LTC2919IMS-2.5#TRPBF |
| 厂商： | Linear Technology |
| 文件页数： | 1/16页 |
| 文件大小： | 0K |
| 描述： | IC MONITOR PREC 2.5V 10-MSOP |
| 标准包装： | 2,500 |
| 类型： | 多压监控器 |
| 监视电压数目： | 3 |
| 输出： | 开路漏极或开路集电极 |
| 复位： | 低有效 |
| 复位超时： | 最小为 140 ms |
| 电压 - 阀值： | 2.213V，可调，可调 |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 10-TFSOP，10-MSOP（0.118"，3.00mm 宽） |
| 供应商设备封装： | 10-MSOP |
| 包装： | 带卷 (TR) |
LTC2919
Precision Triple/Dual Input
UV, OV and Negative
Voltage Monitor
FEATURES
DESCRIPTIO
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Two Low Voltage Adjustable Inputs (0.5V)
Accurate UVLO Provides a Third Monitor Input
Open-Drain RST, OUT1 and OUT2 Outputs
Pin Selectable Input Polarity Allows Negative, UV
and OV Monitoring
Guaranteed Threshold Accuracy: ±1.5%
6.5V Shunt Regulator for High Voltage Operation
Low 50μA Quiescent Current
Buffered 1V Reference for Negative Supply Offset
Input Glitch Rejection
Adjustable Reset Timeout Period
Selectable Internal Timeout Saves Components
Outputs Guaranteed Low With V CC = 0.5V
Space Saving 10-Lead 3mm × 2mm DFN and MSOP
Packages
The LTC ? 2919 is a triple/dual input monitor intended for a
variety of system monitoring applications. Polarity selec-
tion and a buffered reference output allow the LTC2919 to
monitor positive and negative supplies for undervoltage
(UV) and overvoltage (OV) conditions.
The two adjustable inputs have a nominal 0.5V threshold,
featuring tight 1.5% threshold accuracy over the entire
operating temperature range. Glitch ?ltering ensures out-
puts operate reliably without false triggering. An accurate
threshold at the V CC pin provides a third input supply
monitor for a 2.5V, 3.3V or 5V supply.
Two independent output pins indicate the status of each
adjustable input. A third common output provides a
con?gurable reset timeout that may be set by an accu-
rate internal 200ms timer, programmed with an external
Desktop and Notebook Computers
Network Servers
Core, I/O Monitor
Automotive
APPLICATIO S
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capacitor, or disabled for a fast response. A three-state
input pin sets the input polarity of each adjustable input
without requiring any external components.
The LTC2919 provides a highly versatile, precise, space-
conscious, micropower solution for supply monitoring.
, LT, LTC and LTM 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.
TYPICAL APPLICATIO
3.3V UV/OV (Window) Monitor Application with
200ms Internal Timeout (3.3V Logic Out)
SEL Pin Connection for Input Polarity
3.3V
Combinations
453k
V CC
0.1μF
POLARITY
LTC2919–2.5
10k
ADJ1
ADJ2
SEL PIN
10.7k
ADJ1
REF
ADJ2
OUT1
OUT2
RST
UV
OV
10k
10k
FAULT
+
+
+
–
V CC
OPEN
76.8k
SEL
GND
TMR
–
–
GND
2919 TA01a
2919f
1
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