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SC2620 датащи(PDF) 3 Page - Semtech Corporation |
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SC2620 датащи(HTML) 3 Page - Semtech Corporation |
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3 / 26 page ![]() 3 www.semtech.com SC2620 POWER MANAGEMENT 2008 Semtech Corp. Electrical Characteristics (Cont.) Unless specified: -40°C < T J< 125°C, ROSC = 12.1kΩ, VIN = 5V, VBOOST = 8V r e t e m a r a P s n o i t i d n o C n i Mp y Tx a Ms t i n U e c n a t c u d n o c s n a r T r e if il p m A r o r r E 0 8 2µ Ω 1- n i a G p o o L - n e p O r e if il p m A r o r r E 3 5B d t n e r r u C e c r u o S P M O C V B F V , V 8 . 0 = P M O C V 5 . 1 = 0 2A µ t n e r r u C k n i S P M O C V B F V , V 2 . 1 = P M O C V 5 . 1 = 0 2A µ n i a G t n e r r u C h c ti w S o t n i P P M O C 8V / A d l o h s e r h T g n i h c ti w S P M O C 7 . 01 . 13 . 1V e g a tl o V m u m i x a M P M O C V B F V 9 . 0 = 4 . 2V y c n e u q e r F g n i h c ti w S l e n n a h C 2 . 14 . 16 . 1z H M e l c y C y t u D m u m i x a M ) 3 e t o N ( 0 80 9% ti m i L t n e r r u C h c ti w S ) 4 d n a 2 s e t o N ( 3 . 22 . 3A e g a tl o V n o it a r u t a S h c ti w S I W S A 2 - = 3 . 0V t n e r r u C e g a k a e L h c ti w S 0 1A µ e g a tl o V t s o o B m u m i n i M I W S ) 2 e t o N ( A 2 - = 8 . 15 . 2V t n e r r u C n i P t s o o B I W S A 5 . 0 - = 0 2A m I W S A 2 - = 0 6A m ti x E o t e g a tl o V t r a t S - tf o S m u m i n i M n w o d t u h S 2 S S o t d e i T 1 S S2 . 04 . 07 . 0V t n e r r u C g n i g r a h C t r a t s - tf o S V S S V 0 = 2A µ V S S V 5 . 1 = 8 . 1A µ t n e r r u C g n i g r a h c s i D t r a t s - tf o S V S S V 5 . 1 = 8 . 0A µ o t e g a tl o V t r a t s - tf o S m u m i n i M ff o t u h S d a o lr e v O e l b a n E V S S g n i s i R2 V d l o h s e r h T d a o lr e v O B F V S S V , V 3 . 2 = B F g n il l a F 7 . 0V t r a t s e R o t e g a tl o V t r a t s - tf o S ff o t u h S d a o lr e v O r e tf A g n i h c ti w S V S S g n il l a F7 . 01 3 . 1V 1 B F w o l e B d l o h s e r h T d o o G r e w o P V 1 B F g n i s i R 0 80 0 10 2 1V m e g a tl o V w o L t u p t u O d o o G r e w o P V 1 B F I , V 8 . 0 = 1 D O O G P A µ 0 5 2 = 2 . 04 . 0V t n e r r u C e g a k a e L n i P d o o G r e w o P V 1 D O O G P V 5 = 1 . 01 A µ e r u t a r e p m e T n w o d t u h S l a m r e h T 5 5 1C ° s i s e r e t s y H n w o d t u h S l a m r e h T 0 1C ° The maximum duty cycle specified corresponds to 1.4MHz switching frequency. Duty cycles higher than those specified can be achieved by lowering the operating frequency. Note 2: Guaranteed by design, not 100% tested in production. Note 3: Note 4: Switch current limit does not vary with duty cycle. |
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