LT1109CS8#PBF

$7.72

Description：IC REG BOOST ADJ 1.2A 8SO
Series：-
Mfr：Analog Devices Inc.
Package：Tube

SKU:12102b843e62 Category: Voltage Regulators - DC DC Switching Regulators Brand: Analog Devices Inc.

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Product introduction

Product Detailed Parameters

Description：IC REG BOOST ADJ 1.2A 8SO
Series：-
Mfr：Analog Devices Inc.
Package：Tube
Function：Step-Up
Output Configuration：Positive
Topology：Boost
Output Type：Adjustable
Number of Outputs：1
Voltage - Input (Min)：3V
Voltage - Input (Max)：20V
Voltage - Output (Min/Fixed)：1.25V
Voltage - Output (Max)：50V (Switch)
Current - Output：1.2A (Switch)
Frequency - Switching：120kHz
Synchronous Rectifier：No
Operating Temperature：0°C ~ 70°C (TA)
Mounting Type：Surface Mount
Package / Case：8-SOIC (0.154", 3.90mm Width)
Supplier Device Package：8-SO
Grade：-
Qualification：-

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LT1109CS8#PBF

Overview

The LT1109CS8#PBF is a micropower low-cost DC/DC converter manufactured by Analog Devices Inc. It utilizes a boost topology to step up input voltages ranging from 1.6 V to 20 V. The device provides a fixed 5 V output with a maximum output current of 1 A. It operates within a temperature range of 0°C to +70°C and features a shutdown function. Key electrical parameters include a switching frequency of 120 kHz, a static current of 320 uA, and an operating supply current of 32 uA. The component is housed in an 8-pin SOIC package.

Feature Summary

Micropower operation with low quiescent current consumption
Boost topology for stepping up low input voltages
Integrated shutdown capability for power management
Requires minimal external components for implementation

Applications

Flash memory VPP generator circuits
Battery-powered portable devices
General purpose DC/DC conversion in space-constrained designs

Procurement Notes

Verify the specific suffix #PBF indicates lead-free compliance when sourcing. Confirm the SOIC-8 package type matches your PCB footprint requirements. Check current availability status as distribution may vary by region. Ensure the 5V fixed output variant aligns with your system voltage needs rather than adjustable versions.

Selection Notes

Select this component when a simple, cost-effective boost converter is required for low-power applications. It is suitable for systems needing to drive loads from single-cell or dual-cell battery sources. Consider the 120 kHz switching frequency for EMI constraints and the 1 A current limit for load capacity planning against other family members.

Part Context

This part belongs to the LT1109 series of micropower DC/DC converters. It is designed for applications requiring high efficiency at light loads and minimal external component count. The series is known for its simplicity and reliability in converting low input voltages to higher regulated outputs for digital logic or peripheral power.