LT1949ES8#PBF

$3.93

Description：IC REG BOOST SEPIC ADJ 1A 8SO
Series：-
Mfr：Linear Technology
Package：Bulk

SKU:80483c96d3d4 Category: Voltage Regulators - DC DC Switching Regulators Brand: Linear Technology

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Product introduction

Product Detailed Parameters

Description：IC REG BOOST SEPIC ADJ 1A 8SO
Series：-
Mfr：Linear Technology
Package：Bulk
Function：Step-Up, Step-Up/Step-Down
Output Configuration：Positive
Topology：Boost, SEPIC
Output Type：Adjustable
Number of Outputs：1
Voltage - Input (Min)：1.7V
Voltage - Input (Max)：12V
Voltage - Output (Min/Fixed)：1.7V
Voltage - Output (Max)：28V
Current - Output：1A (Switch)
Frequency - Switching：600kHz
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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LT1949ES8#PBF

Overview

The LT1949ES8#PBF is a monolithic switching regulator featuring an integrated 1.2A power switch, designed for boost and SEPIC topologies. It operates with an input voltage range of 1.7V to 12V and provides an adjustable output voltage from 1.7V to 28V. The device utilizes a fixed 600kHz switching frequency and includes internal compensation for stable operation. Packaged in an 8-lead MSOP, it supports continuous output currents up to 1A while maintaining high efficiency across various load conditions.

Feature Summary

Integrated 1.2A power switch enables compact design without external components
Supports both boost and SEPIC configurations for flexible voltage conversion
Fixed 600kHz switching frequency allows use of small passive components
Internal compensation simplifies circuit design and ensures stability

Applications

Battery-powered portable electronics requiring voltage step-up
White LED backlight drivers in mobile devices
General-purpose DC-DC conversion in space-constrained systems
SEPIC applications where input voltage may exceed or fall below output

Procurement Notes

Verify the specific suffix ES8 corresponds to the MSOP package variant when sourcing. Confirm RoHS compliance status through official Analog Devices documentation. Ensure ordering part numbers match exact thermal and mechanical specifications required for the target PCB layout. Cross-reference datasheet revisions for any recent pinout or electrical parameter updates before finalizing procurement.

Selection Notes

Select this component when a single-chip solution is needed for boosting low battery voltages. It is suitable for applications demanding moderate output current with minimal external component count. Consider the fixed frequency trade-off regarding EMI versus filter size. Evaluate thermal performance within the MSOP package for high ambient temperature environments.

Part Context

This part belongs to the LT1949 family of switching regulators manufactured by Analog Devices (formerly Linear Technology). The family focuses on high-efficiency, space-saving power management solutions. The ES8 designation specifically identifies the 8-lead MSOP package option, distinguishing it from other package variants like SOT-23 or SOIC found in related product lines.