LT1618EMS#PBF

Overview

The LT1618EMS#PBF is a constant-current/constant-voltage step-up DC/DC converter manufactured by Analog Devices Inc. It operates with an input voltage range of 1.6 V to 18 V and delivers an adjustable output voltage from 1.263 V to 36 V. The device utilizes a fixed 1.4 MHz switching frequency, enabling the use of compact external components. It features a 10-pin MSOP package with a 3 mm x 3 mm footprint and includes an exposed pad for thermal management.

Feature Summary

• Integrates traditional voltage feedback loops with unique current feedback loops for precise regulation
• Supports simultaneous constant-current and constant-voltage operation modes
• Utilizes high-frequency current-mode switching architecture

Applications

• LED backlight drivers
• USB-powered boost or SEPIC converters
• Input current-limited boost or SEPIC converters
• Battery chargers

Procurement Notes

Verify the specific suffix #PBF indicates lead-free compliance when sourcing. Confirm the MSOP-10 package dimensions match your PCB layout constraints. Ensure the input voltage range aligns with your power source specifications before finalizing procurement.

Selection Notes

Select this component for applications requiring both regulated voltage and current limits within a small form factor. The 1.4 MHz frequency allows for smaller inductors compared to lower-frequency alternatives. Consider thermal performance due to the exposed pad requirement on the MSOP-10 package.

Part Context

This part belongs to the LT1618 family of power management ICs designed for portable electronics. It serves as a versatile solution for driving LEDs or boosting battery voltages while maintaining strict current control. The manufacturer is Analog Devices Inc., formerly Linear Technology.

Replacement Considerations

LT1618EMSPBF is listed as a variant with identical functional descriptions in public databases.