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Datasheets:
SI-3018LSA: Low-Voltage, High-Current 1.8 V Linear Regulator (PDF)

Selection Guides:
Sanken Linear Regulators

when this product is updated

SI-3018LSA
Low-Voltage, High-Current 1.8 V Linear Regulator

Features

• 1 A Output Current
• Low Dropout Voltage
• LSTTL/CMOS-Compatible On/Off Control
  Less Than 1 µA "Sleep" Current
• Internal Foldback Overcurrent Limiting
• Internal Thermal Protection
• Surface-Mount Package

Description

The SI-3018LSA is designed to meet the requirement for increased integration and reliability in low-voltage, high-current, linear regulator applications such as personal computers (PCs) and set-top boxes. Each device incorporates a monolithic low-level reference and control circuit with a high-current pnp transistor in a power multi-chip module (PMCM^TM). Regulated output voltages of 2.5 V or 3.3 V are also available.

The high-current pass element provides a low dropout voltage with output current to 1 A. Regulator accuracy of ±2 % and excellent temperature characteristics are provided. The logic-compatible ENABLE input gives the designer complete control over power up, power down, and standby or sleep.

Functional Block Diagram

Complete Part Numbers

Part Number	Package Type	RoHS Compliant	Part Composition/ RoHS Data	Temperature	Comments	Samples	Distributor Stock
SI-3018LSA	8-lead SOIC	Yes	--	-20 °C to  85 °C

Allegro's products are not to be used in life support devices or systems, if a failure of an Allegro product can reasonably be expected to cause the failure of that life support device or system, or to affect the safety or effectiveness of that device or system.