S-8550 - (S-8550 / S-8551) PWM CONTROL SWITCHING REGULATORS

Seiko Instruments

S-8550 Datasheet Preview — Preview of S-8550 PDF

Datasheet Details

Part number	S-8550
Manufacturer	Seiko ↗ Instruments
File Size	476.54 KB
Description	(S-8550 / S-8551) PWM CONTROL SWITCHING REGULATORS
Datasheet	S-8550_SeikoInstruments.pdf

S-8550 Product details

Description

IC power supply pin GND pin Shutdown pin “H” : Power on (normal operation) “L” : Power off (standby) Output voltage feedback pin External inductor connection pin VIN VSS Pin No.1 2 3 4 5 Symbol ON/OFF FB CONT 1 2 3 Figure 2 Table 2 Pin No.1 2 3 4 5 S-8551 Series (Pin Configuration 2) Description Shutdown pin “H” : Power on (normal operation) “L” : Power off (standby) VSS GND pin External inductor connection pin IC power supply pin Output voltage feedback pin Symbol ON/OFF CONT VIN F

Features

s.
Oscillation frequency : 1.2 MHz.
Input voltage range : 2.0 to 5.5 V.
Output voltage range : Arbitrarily settable by external output voltage setting resistor.
Output current : 600 mA.
Reference voltage : 0.6 V ±2.0%.
Efficiency : 92%.
Soft-start function : 1 ms typ.
Shutdown function : Shutdown current consumption : 1.0 µA max.
Built-in current limit circuit.
Pch power MOS FET on-resistance : 0.4 Ω typ.

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Published: Aug 28, 2009 |