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LTC3556 Datasheet, PDF (31/36 Pages) Linear Technology – High Effi ciency USB Power Manager with Dual Buck and Buck-Boost DC/DCs | |||
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APPLICATIONS INFORMATION
VBUS
RNOM
100k
NTC
3
VBUS
LTC3556
NTC BLOCK
0.765 ⢠VBUS â
+
T
RNTC
100k
â
0.349 ⢠VBUS
+
TOO_COLD
TOO_HOT
+
0.017V ⢠VBUS
â
(7a)
NTC_ENABLE
3556 F07a
VBUS
RNOM
105k
NTC
3
VBUS
LTC3556
NTC BLOCK
0.765 ⢠VBUS â
+
R1
12.7k
T
RNTC
100k
â
0.349 ⢠VBUS
+
+
0.017 ⢠VBUS
â
(7b)
TOO_COLD
TOO_HOT
NTC_ENABLE
3556 F07b
Figure 7. NTC Circuits
LTC3556
3556f
31
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