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S-8550AA-I8T1U Datasheet(PDF) 4 Page - Seiko Instruments Inc |
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S-8550AA-I8T1U Datasheet(HTML) 4 Page - Seiko Instruments Inc |
4 / 31 page STEP-DOWN, BUILT-IN FET, SYNCHRONOUS RECTIFICATION, PWM CONTROL SWITCHING REGULATORS S-8550 Series Rev.5.0_01 4 Pin Configurations 1. SOT-23-5 Table 1 13 2 4 5 Top view Figure 3 Pin No. Symbol Description 1 VIN IC power supply pin 2 VSS GND pin 3 ON/OFF Shutdown pin “H” : Power on (normal operation) “L” : Power off (standby) 4 FB Output voltage feedback pin 5 CONT External inductor connection pin 2. SNT-8A Table 2 7 6 5 8 2 3 4 1 Top view Figure 4 Pin No. Symbol Description 1 FB Output voltage feedback pin 2 NC*1 No connection 3 VSS*2 Small signal GND Pin 4 ON/OFF Shutdown pin “H”:Power on (normal operation) “L”:Power off (standby) 5 VIN IC power supply pin 6 PVSS*2 Power GND pin 7 NC*1 No connection 8 CONT External inductor connection pin *1. The NC pin is electrically open. The NC pin can be connected to VIN, VSS or PVSS. *2. Connect VSS and PVSS to GND. |
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