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S-8321

Seiko
Part Number S-8321
Manufacturer Seiko
Description SMALL PACKAGE PFM CONTROL STEP-UP SWITCHING REGULATOR
Published Jan 28, 2018
Detailed Description Rev.2.0 SMALL PACKAGE PFM CONTROL STEP-UP SWITCHING REGULATOR S-8321/8322 Series The S-8321/8322 Series is a CMOS PFM-...
Datasheet PDF File S-8321 PDF File

S-8321
S-8321

Overview
Rev.
2.
0 SMALL PACKAGE PFM CONTROL STEP-UP SWITCHING REGULATOR S-8321/8322 Series The S-8321/8322 Series is a CMOS PFM-control step-up switching regulator which mainly consists of a reference voltage source, an oscillation circuit, a power MOS FET, and a comparator.
The new method PFM control circuit automatically switches the duty ratio according to load, offering products of low ripple over a wide range, high efficiency, high output current.
A step-up switching regulator is constructed by externally connecting only a coil, a capacitor and a diode to the S-8321/8322 Series.
This feature, along with its small package and low current consumption, makes the S-8321/8322 Series ideal for the power supply of portable equipment.
A built-in protection circuit prevents damage to the IC by turning off the MOS FET when the voltage at CONT pin exceeds the limit during ON of the built-in MOS FET.
For applications requiring a high output current, products used with an external transistor are also ...


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