LTC2939H 查看數據表（PDF） - Linear Technology
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LTC2939H Datasheet PDF : 20 Pages
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LTC2938/LTC2939
TYPICAL APPLICATIONS
Supply and Temperature Monitor (Mode 1, 5V, 3.3V, 28V, –5.2V, 12V, 100°C)
5V
3.3V
12V
2150k 1%
28V 5110k 1%
–5.2V
467k 1%
0.1μF
0.1μF
RBIAS
93.1k
1%
RHYST
280k
1%
100k
100k
1%
1%
RNTC*
470k
*PANASONIC ERTJOEV474J
V1
V2
10k
1%
121k
1%
R1
93.1k
1%
R2
9.53k
1%
V3
V5
LTC2939
V4
RST
VREF
WDO
V6
WDI
VPG GND CRT CWT
CRT
47nF
293839 TA04
SYSTEM
LOGIC
Buffered VREF to Power High Current Circuits
5V
3.3V
0.1μF
2.5V
1.8V
12V
2150k 1%
1.2V 124k 1%
100k
1%
V1
V2
0.1μF
V3
V4
V5
V6
LTC2939
RST
WDO
WDI
VREF
GND CRT
VPG
CWT
100k
1%
CRT
47nF
CWT
47nF
MICROPROCESSOR
R1
59k
1%
R2
40.2k
1%
5V
+
LT1809
–
293839 TAO5
1.210V
±10mA
16
293839ff
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