MAX1540ETJ

$1.24

Description：IC REG LIN DUAL STEP DOWN CNTRL
Series：-
Mfr：Analog Devices Inc./Maxim Integrated
Package：Bulk

SKU:c52a2083bc65 Category: Voltage Regulators - Linear + Switching Brand: Analog Devices Inc./Maxim Integrated

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Product introduction

Product Detailed Parameters

Description：IC REG LIN DUAL STEP DOWN CNTRL
Series：-
Mfr：Analog Devices Inc./Maxim Integrated
Package：Bulk
Topology：Step-Down (Buck) Synchronous (2), Linear (LDO) (1)
Number of Outputs：3
Frequency - Switching：170kHz ~ 620kHz
Voltage/Current - Output 1：Adjustable (Fixed), Adjustable (Fixed), Fixed, 1.2V, 1.8V, 700mV ~ 5.5V, 1A
Voltage/Current - Output 2：Adjustable (Fixed), Adjustable (Fixed), Fixed, 1.5V, 2.5V, 700mV ~ 5.5V, 1A
Voltage/Current - Output 3：Adjustable (Fixed), Adjustable (Fixed), Fixed, 5V, 100mA
w/LED Driver：No
w/Supervisor：No
w/Sequencer：No
Voltage - Supply：5.5V ~ 28V
Operating Temperature：-40°C ~ 85°C
Mounting Type：Surface Mount
Package / Case：32-WFQFN Exposed Pad
Supplier Device Package：32-TQFN-EP (5x5)
Grade：-
Qualification：-

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MAX1540ETJ

Overview

The MAX1540ETJ is a dual step-down switching controller designed for high-efficiency power conversion. It operates within an input voltage range of 5.5V to 28V and supports two independent outputs with adjustable voltages from 700mV to 5.5V. The device delivers up to 5A output current per channel and features a programmable switching frequency between 170kHz and 620kHz. Packaged in a 32-TQFN (5x5) surface-mount case, it functions reliably across an industrial temperature range of -40°C to +85°C.

Feature Summary

Dual-channel buck topology with independent control loops
Integrated synchronous rectification for enhanced efficiency
Programmable switching frequency for optimized design flexibility
Comprehensive protection including cycle-by-cycle current limiting

Applications

Point-of-load regulation for digital logic supplies
Power distribution networks in embedded systems
Industrial equipment DC-DC conversion stages
Telecommunications infrastructure power management

Procurement Notes

Verify component authenticity through authorized channels due to potential supply chain variations. Confirm RoHS compliance status and check for specific suffixes that may indicate package or temperature grade differences. Review the latest datasheet revision for any updates to electrical characteristics or recommended operating conditions before finalizing procurement specifications.

Selection Notes

Evaluate thermal performance requirements based on the 32-TQFN package size and expected load currents. Ensure the selected switching frequency aligns with external inductor and capacitor availability while meeting EMI constraints. Verify that the input voltage range covers all operational scenarios, including transient spikes, to maintain stable regulation across the full duty cycle range.

Part Context

This component belongs to the MAX1540 series of dual step-down controllers from Analog Devices/Maxim Integrated. It shares architectural similarities with other members of the family but is distinguished by its specific pinout, thermal pad configuration, and dual-output capability. The ETJ suffix denotes the TQFN-EP-32 package variant suitable for surface-mount assembly.