LT3506EFE#PBF

Overview

The LT3506EFE#PBF is a dual current mode PWM step-down DC/DC converter manufactured by Analog Devices Inc. It features two independent buck converters housed in a 16-pin TSSOP package with an exposed pad. The device operates from an input voltage range of 3.6 V to 25 V and provides adjustable output voltages between 0.8 V and 23.25 V. Each channel delivers up to 1.6 A of output current. The internal power switches are rated for 2 A, and the unit functions at a switching frequency of 1.1 MHz. Quiescent current is specified at 3.8 mA, and the operational temperature range extends from -40°C to +85°C.

Feature Summary

• Dual-channel architecture with synchronized oscillators operating in opposite phases to minimize input ripple current
• Integrated 2 A power switches support high-current applications within a compact surface-mount footprint
• Adjustable output voltage capability allows flexible configuration for various load requirements

Applications

• Portable equipment requiring multiple regulated supply rails
• Industrial control systems needing efficient DC-DC conversion
• Embedded systems utilizing single-oscillator dual-phase power management

Procurement Notes

Verify the specific suffix FE against the official datasheet to confirm the TSSOP-16 package variant. Ensure the design accounts for the exposed thermal pad connection on the 16-TSSOP housing. Confirm that the 1.1 MHz switching frequency aligns with electromagnetic interference constraints in the target application environment before finalizing component selection.

Selection Notes

Select this component when dual isolated or synchronous buck outputs are required from a single controller. The 1.6 A per channel rating suits moderate power loads. Consider the 1.1 MHz frequency for balancing component size against efficiency. Verify that the 3.6 V minimum input voltage meets the system's lowest supply condition. The absence of a shutdown pin requires continuous operation once powered.

Part Context

This part belongs to the LT3506 family of dual buck converters. It shares core topology with variants like the LT3506IFE but differs in package type. The series emphasizes low ripple through phase-shifted operation. Analog Devices designs these ICs for general-purpose power management where space and efficiency are critical constraints.

Replacement Considerations

LT3506AEDHD offers identical electrical performance in a DFN-EP package. LT3506IFE provides the same functionality in a standard TSSOP-16 form factor without the exposed pad. Verify pinout compatibility and thermal dissipation requirements when substituting.