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AN7905T Datasheet(PDF) 8 Page - Panasonic Semiconductor |
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AN7905T Datasheet(HTML) 8 Page - Panasonic Semiconductor |
8 / 8 page 8 120 100 80 60 40 20 0 10 100 AN7905T/F IO =100mA 1k 10k 100k Frequency f (Hz) RR– f 16 14 12 10 8 6 4 2 0 0 40 80 120 160 Ambient Temperature Ta (˚C) PD –Ta (AN7900F Series) 1.4 1.2 1.0 0.8 0.6 0.4 –50 0 50 100 150 Junction Temperature Tj (˚C) VDIF (min.) –Tj IO =1000mA I O =5 00m A I O =200mA I O =2 0mA 02468 10 10 0 –10 –20 20 15 10 5 Input Transient Response AN7905T/F 0 1020304050 1 0 –1 –2 2 1 0 Load Transient Response AN7905T/F 16 14 12 10 8 6 4 2 0 0 40 80 120 160 Ambient Temperature Ta (˚C) (1) Infinite Heat Sink (2) 5˚C/W Heat Sink (3) 15˚C/W Heat Sink (4) No Heat Sink (1) Infinite Heat Sink (2) 5˚C/W Heat Sink (3) 15˚C/W Heat Sink (4) No Heat Sink (1) (2) (3) (4) (1) (2) (3) (4) Time t ( µs) Time t ( µs) PD –Ta (AN7900T Series) s Basic Regulator Circuit s Application Circuit –VO –VO 2 µF 1 µF –VI IO Ibias 6 Ω Q1 AN7900T AN7900F AN7900T AN7900F 2 1 3 2 3 1 R2 R1 VO´ –VI |VO| =V O´ + Ibias + R1 R2 VO´ – + – + 2 µF 1 µF – + – + 1) Current Bootstrap Circuit 2) Adjustable Output Regulator s Characteristic Curve CI : Required when the input line is long CO : Improves the transient response. CO CI Input Output AN7900T AN7900F Common 2 3 1 – + – + |
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