BD9137MUV-E2

Overview

The BD9137MUV-E2 is a synchronous buck converter manufactured by ROHM Semiconductor, designed for high-efficiency power management in compact electronic systems. It operates with an input voltage range of 2.7 V to 5.5 V and delivers a maximum output current of 4 A. The device supports adjustable output voltages from 800 mV to 3.3 V. Key electrical parameters include a switching frequency of 1 MHz, a quiescent current of 10 uA, and an operating supply current of 250 uA. It functions within a temperature range of -40°C to +105°C and utilizes a VQFNV4040-EP-20 surface-mount package.

Feature Summary

• Integrates Nch/Nch FETs with SLLM technology for high efficiency across full load ranges
• Employs current mode PWM control for rapid transient response during load changes
• Includes built-in soft-start, thermal protection, UVLO, and intermittent short-circuit protection
• Features shutdown capability with typical standby current of 0 μA

Applications

• Portable consumer electronics requiring efficient step-down regulation
• Embedded systems utilizing 5V or 3.3V input rails
• Battery-powered devices needing low quiescent current operation
• Industrial control modules operating in extended temperature environments

Procurement Notes

Verify the NRND (Not Recommended for New Designs) status before procurement, as this component is intended for existing customers only and may not be available for new production runs. Confirm RoHS compliance details via official datasheets. Ensure ordering suffixes match exact package and tape specifications. Validate lead times and availability through authorized distributors, as stock levels fluctuate. Cross-reference part numbers to avoid confusion with similar series variants.

Selection Notes

Select this component when a single-channel synchronous buck converter is required with input voltages between 2.7 V and 5.5 V. It is suitable for designs demanding up to 4 A output current with minimal external component count. Consider the 1 MHz switching frequency for smaller passive components. Evaluate thermal performance given the 4 A capability in a small VQFN package. Verify compatibility with system shutdown requirements due to its ultra-low standby current feature.

Part Context

The BD9137MUV-E2 belongs to the BD9137MUV series of PMICs from ROHM Semiconductor. It is categorized under switching voltage regulators and specifically functions as a synchronous buck converter. The device integrates both controller and power MOSFETs, simplifying board layout. It shares packaging similarities with other ROHM VQFN series parts but differs in electrical ratings and control topology compared to multi-output or higher-voltage variants in the broader product line.

Replacement Considerations

Publicly confirmed substitute part numbers are not explicitly listed in the provided documentation. Engineers should consult ROHM's official replacement guide or contact technical support for validated alternatives. Direct pin-to-pin replacements may require verification of electrical parameter compatibility, including input voltage range, output current capacity, and switching frequency.