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PSB2121-T Datasheet(PDF) 7 Page - Siemens Semiconductor Group |
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PSB2121-T Datasheet(HTML) 7 Page - Siemens Semiconductor Group |
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7 / 13 page  Semiconductor Group 7 PSB 2121 DC-Characteristics (cont’d) Parameter Symbol Limit Values Unit Test Condition min. typ. max. Pulse Width Modulator Duty cycle t d 050 % Under Voltage Detection UV Start up threshold V 789V pin UV = V S Threshold hysteresis H y 0.3 V pin UV = V S Soft Start C SS Charging current C T 248 µA Output Driver GA T A = 25 ˚C H-output voltage V OH 4.5 V EXT V I Source = 5 mA L-output voltage V OL 0.3 0.4 V I Sink = 5 mA Rise time t r 130 200 ns C L = 220 pF; V EXT = 6.3 V Fall time t f 70 200 ns C L = 220 pF; V EXT = 6.3 V Output current I O 5mA External Supply V EXT Output voltage V O 5.8 V Output current I O 2mA Input voltage V I 6.0 7.5 V Z-current I Z 2mA Power consumption P tot 56mW V S = 40 V f OSC = 20 kHz V EXT = 6.2 to 6.7 V |
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