SC4808B Просмотр технического описания (PDF) - Semtech Corporation
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SC4808B Datasheet PDF : 31 Pages
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SC4808A/B
POWER MANAGEMENT
SC4808B Typical Characteristics (Cont.)
100
98
Vcc UVLO (Hysteresis)
96
94
92
90
88
86
84
-40 -25 -10 5 20 35 50 65 80 95 110 125
Ta (°C)
Vcc UVLO Hysteresis vs. Temperature
1400
1200
Oscillator Frequency 1MHz
Oscillator Frequency 500kHz
1000
800
600
400
200
-40 -25 -10 5 20 35 50 65 80 95 110 125
Ta (°C)
Oscillator Frequency vs. Temperature
3.170
3.165
LUVLO (Rising)
3.160
3.155
3.150
3.145
3.140
3.135
3.130
3.125
3.120
-40 -25 -10 5 20 35 50 65 80 95 110 125
Ta (°C)
Line UVLO vs. Temperature
664
662
Sync. Frequency @ Fosc = 500kHz
660
658
656
654
652
650
-40 -25 -10 5 20 35 50 65 80 95 110 125
Ta (°C)
Synchronization Frequency vs. Temperature
140
135
LUVLO (Hysteresis)
130
125
120
115
110
105
100
-40 -25 -10 5 20 35 50 65 80 95 110 125
Ta (°C)
Line UVLO Hysteresis vs. Temperature
49.5
49.5
Maximum Duty Cycle
49.5
49.4
49.4
49.4
49.4
49.4
-40 -25 -10 5
20 35 50 65 80 95 110 125
Ta (°C)
Maximum Duty Cycle vs. Temperature
2005 Semtech Corp.
11
www.semtech.com
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