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SC560H Datasheet(PDF) 7 Page - Semtech Corporation |
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SC560H Datasheet(HTML) 7 Page - Semtech Corporation |
7 / 18 page SC560 7 Pin Con gurations and Descriptions Pin # Pin Name Pin Function SC560A SC560B SC560C SC560 Fixed Output 1 1 1 1 OUTB Output for LDOB 2 2 2 2 VIN Input supply voltage terminal 3 3 3 3 OUTA Output for LDOA 4 4 4 FBA Feedback sense pin for LDOA — Connect this pin to an external resistor divider to set V OUTA 5 5 5 5 GND Analog and digital ground 6 6 6 6 EN Logic input — active HIGH enables both LDOs for the SC560A and SC560C, or LDOA for all other variants. EN must be active in the SC560B and the xed output variants before ENB can be activated. 7 7 BYP LDO bypass output — Bypass with a 22nF capacitor 7 4 ENB Logic input — active HIGH enables LDOB for SC560B and the xed voltage variants. 7 8 PGOOD Power Good output — monitors the level of LDOA, switches low when the output drops out of regulation (PGOOD is open drain). 8 8 8 FBB Feedback sense pin for LDOB — Connect this pin to an external resistor divider to set V OUTB Typical Characteristics (continued) SC560A Noise Spectrum 1 10 100 1000 10000 0 .01 0 .1 1 10 100 1000 Frequency (kHz) V IN = 5V, FB = 10kΩ//0.1μF+5kΩ, by pass=22nF, COUT=1μF SC560A PSRR vs. Frequency (Both LDOs) 0 10 20 30 40 50 60 70 80 90 0 .1 1 10 100 1000 10000 Frequency (kHz) V IN = 5V, FB = 10kΩ//0.1μF+5kΩ, Load=10mA, by pass=22nF, COUT=10μF |
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