S-817 Series Ultra-Small Package CMOS Voltage Regulator

Category: Electronics, Regulators, Seiko Instruments USA Inc

Introduction

The S-817 Series, developed by Seiko Instruments Inc, represents a range of 3-terminal positive voltage regulators engineered utilizing CMOS technology. The S-817 series is highlighted for its compatibility with small ceramic capacitors as an output capacitor and its stable functionality even at low load capacities as minimal as 1µA.

Key Features

The series boasts an ultra-low operating current between typically 1.2 µA and a maximum of 2.5 µA. It offers a wide range of selectable output voltages from 1.1 to 6.0V, adjustable in 0.1V increments, with an output voltage accuracy of ±2.0%. The output current capabilities vary with the model, up to 50 mA for the 3.0V output product when V_IN is 5V, and up to 75 mA for the 5.0V output product when V_IN is 7V. Additionally, the dropout voltage is typically about 160 mV at a 5.0V output voltage with a 10 mA load.

The regulators allow the use of low ESR capacitors, specifically ceramic capacitors of 0.1 µF or greater, as output capacitors. This series includes a short-circuit protection feature for enhanced safety and exhibits excellent line regulation.

The components are designed to be eco-friendly as well, being lead-free with 100% tin and halogen-free, ensuring compliance with current environmental regulations.

Applications

The S-817 voltage regulators find their application in various fields that require a stable power source. They are ideal for use in battery-powered devices, personal communication devices, and home electrical or electronic appliances due to their low power consumption and small form factor.

Packaging Options

To cater to diverse industrial requirements, the S-817 series is available in several package options including SNT-4A, SC-82AB, SOT-23-5, SOT-89-3, and TO-92. Each package varies in size, with SNT-4A being highlighted for its super small dimensions of 1.2 x 1.6 mm, making it particularly suitable for compact portable devices.

Note:

Users should be mindful of the power dissipation of the regulator package under large loads to prevent overheating and potential failure. For further clarification on the product nomenclature and to pick the appropriate model, users should refer to the Product Name Structure as detailed in the datasheet.