SC4808B Просмотр технического описания (PDF) - Semtech Corporation
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SC4808B Datasheet PDF : 31 Pages
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SC4808A/B
POWER MANAGEMENT
SC4808A Typical Characteristics (Cont.)
5.00
4.80
Vcc UVLO
(Hysteresis)
4.60
4.40
4.20
4.00
3.80
3.60
3.40
3.20
3.00
-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
5.030
5.025
LUVLO (Rising)
5.020
5.015
5.010
5.005
5.000
4.995
4.990
4.985
-40 -25 -10 5 20 35 50 65 80 95 110 125
Ta (°C)
Line UVLO vs. Temperature
1000
900
Sync. Frequency @ Fosc = 500kHz
800
700
600
500
400
-40 -25 -10 5 20 35 50 65 80 95 110 125
Ta (°C)
Synchronization Frequency vs. Temperature
335
330
LUVLO (Hysteresis)
325
320
315
310
305
300
295
290
-40 -25 -10 5 20 35 50 65 80 95 110 125
Ta (°C)
Line UVLO Hysteresis vs. Temperature
49.3
49.3
Maximum Duty Cycle
49.2
49.2
49.1
49.1
49.0
49.0
-40 -25 -10 5 20 35 50 65 80 95 110 125
Ta (°C)
Maximum Duty Cycle vs. Temperature
2005 Semtech Corp.
8
www.semtech.com
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