MPQ4459DQT-LF-P

$1.98

Description：IC REG BUCK ADJ 1.5A 10TQFN
Series：-
Mfr：Monolithic Power Systems Inc.
Package：Tape & Reel (TR)

SKU:eda761bde91d Category: Voltage Regulators - DC DC Switching Regulators Brand: Monolithic Power Systems Inc.

Consult the customer manager about the wholesale price.

consultation hotline：86-132-6715-2157

email：[email protected]
Contact the product manager for consultation. One-stop consultation is available.

Do you want a lower wholesale price? Please send us your inquiry and we will reply immediately.

Product introduction

MPQ4459DQT-LF-P is listed in the Voltage Regulators - DC DC Switching Regulators range at ChipApex. The manufacturer field lists Monolithic Power Systems Inc.. Its product description is IC REG BUCK ADJ 1.5A 10TQFN. Review the specifications below when checking this part for your BOM.

Voltage Regulators - DC DC Switching Regulators specifications for MPQ4459DQT-LF-P

Description：IC REG BUCK ADJ 1.5A 10TQFN
Series：-
Mfr：Monolithic Power Systems Inc.
Package：Tape & Reel (TR)
Function：Step-Down
Output Configuration：Positive
Topology：Buck
Output Type：Adjustable
Number of Outputs：1
Voltage - Input (Min)：3.8V
Voltage - Input (Max)：36V
Voltage - Output (Min/Fixed)：0.8V
Voltage - Output (Max)：30V
Current - Output：1.5A
Frequency - Switching：Up to 4MHz
Synchronous Rectifier：No
Operating Temperature：-40°C ~ 125°C (TJ)
Mounting Type：Surface Mount
Package / Case：10-WFDFN Exposed Pad
Supplier Device Package：10-TQFN (3x3)
Grade：-
Qualification：-

Voltage Regulators - DC DC Switching Regulators datasheet and documents for MPQ4459DQT-LF-P

MPQ4459DQT-LF-P

Voltage Regulators - DC DC Switching Regulators Overview

The MPQ4459DQT-LF-P is a Monolithic Power Systems buck switching regulator in a TQFN-EP-10 package. It delivers 1.5A output current with an input voltage range of 3.8V to 36V and adjustable output from 800mV to 30V. Operating at a fixed 4MHz frequency, it features 120µA quiescent current. The device supports -40°C to +125°C operation and includes internal high-side MOSFETs.

Voltage Regulators - DC DC Switching Regulators Feature Summary

Integrates internal high-voltage power MOSFETs for compact design
Provides frequency foldback to prevent inductor current runaway during startup
Includes thermal shutdown for reliable fault-tolerant operation
Enables ceramic capacitor stability without additional compensation requirements

Voltage Regulators - DC DC Switching Regulators Applications

Automotive systems requiring wide input voltage tolerance
Industrial power supply architectures
Battery-powered equipment utilizing low quiescent current
Applications necessitating EMI noise avoidance in AM radio bands

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix 'P' indicates reel packaging configuration against official MPS documentation. Confirm RoHS compliance status through manufacturer datasheets. Ensure the TQFN-EP-10 footprint matches PCB layout requirements. Validate operating temperature ranges for target industrial or automotive environments prior to integration.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component for designs requiring a 4MHz switching frequency to minimize external passive size while avoiding AM band interference. Choose for applications needing 1.5A continuous current within a 36V maximum input limit. Consider for battery-operated devices due to the 120µA quiescent current specification. Verify compatibility with ceramic output capacitors for simplified compensation.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the MPQ4459 series of high-frequency step-down converters. It represents a non-synchronous buck topology designed for robust performance in demanding environments. The series emphasizes ease of use through internal compensation and protection features suitable for space-constrained electronics.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Consult official MPS substitution guides for verified alternatives. Cross-reference pinouts and electrical parameters carefully when considering equivalent parts from other manufacturers.

How to buy

Online and offline orders are supported. If the item is available for online purchase, you can place it in the cart; for wholesale pricing, please contact our product manager for a quote.

Payment Method

Payment methods: T/T, WeChat Pay, credit cards, Google Pay, Apple Pay . Buyer covers shipping, fees, duties, and taxes; contact our product manager if you need a contract/procurement process.

Delivery time

In-stock items usually ship within 24 hours. Otherwise, shipment is arranged 1 to 2 days after the items arrive at our warehouse. Timing depends on destination and shipping method.

Freight calculation

Freight cost depends on destination, package size, and weight . We offer shipping options via DHL, FedEx, UPS, and TNT , and can ship using your freight account upon request.

Mode of Transportation

We ship via DHL, FedEx, UPS, and TNT. If you prefer a specific logistics provider, we can ship using your designated carrier.

Return and Refund

Returns are accepted within 60 days of invoice with RMA approval. Items must be resalable; original invoice and test report are required. No returns for customer errors.