S-8550 Datasheet - Seiko Instruments

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

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) Desc.

Rev.2.1_01 www.DataSheet4U.com STEP-DOWN, BUILT-IN FET, SYNCHRONOUS RECTIFICATION, PWM CONTROL SWITCHING REGULATORS S-8550/8551 Series The S-8550/8551 Series is a CMOS synchronous rectification step-down switching regulator which mainly consists of a reference voltage circuit, an oscillator, an error amplifier, a phase compensation circuit, a PWM controller, an under voltage lockout circuit (UVLO), a current limit circuit, and a power MOS FET. The oscillation frequency is high at 1.2 MHz, so .

S-8550 Features

* 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%

* So

S-8550 Datasheet (476.54 KB)

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Datasheet Details

Part number:

S-8550

Manufacturer:

Seiko Instruments

File Size:

476.54 KB

Description:

(s-8550 / s-8551) pwm control switching regulators.

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S-8550 S-8550 S-8551 PWM CONTROL SWITCHING REGULATORS Seiko Instruments

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