MP8128GQ-P

$2.58

Description：1A LNB POWER REGULATOR WITH I2C
Series：-
Mfr：Monolithic Power Systems Inc.
Package：Tape & Reel (TR),Cut Tape (CT)

SKU:e578c1837368 Category: Special Purpose Regulators Brand: Monolithic Power Systems Inc.

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Product introduction

Product Detailed Parameters

Description：1A LNB POWER REGULATOR WITH I2C
Series：-
Mfr：Monolithic Power Systems Inc.
Package：Tape & Reel (TR),Cut Tape (CT)
Applications：Converter, LNB
Voltage - Input：14V
Number of Outputs：1
Voltage - Output：40V
Operating Temperature：-40°C ~ 125°C (TJ)
Mounting Type：Surface Mount
Package / Case：20-VFQFN Exposed Pad
Supplier Device Package：20-QFN (3x3)
Grade：-
Qualification：-

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MP8128GQ-P

Overview

The MP8128GQ-P is a boost switching regulator designed for LNB power applications. It operates with an input voltage range of 8 V to 14 V and delivers a fixed output voltage of 40 V at up to 1 A. The device integrates an I2C interface and DiSEqC 2.x functionality for satellite receiver control. It utilizes a QFN-20 package, supports a switching frequency of 440 kHz, and functions within a temperature range of -40°C to +125°C.

Feature Summary

Integrates I2C interface and DiSEqC 2.x protocol support for satellite communication control
Boost topology optimized for Low Noise Block downconverter (LNB) power regulation
Single output configuration providing stable high-voltage generation from lower input sources

Applications

Satellite receiver systems requiring LNB power supply
DiSEqC 2.x compatible signal routing equipment
I2C-controlled satellite tuner modules

Procurement Notes

Verify the specific suffix 'GQ' against official Monolithic Power Systems documentation to confirm pinout and thermal pad specifications. Ensure the component meets RoHS compliance requirements for your target assembly process. Cross-reference the datasheet revision date to validate parameter accuracy before finalizing design integration.

Selection Notes

Select this component when a dedicated LNB power solution with integrated DiSEqC handling is required. The fixed 40 V output simplifies design compared to adjustable regulators. Consider the QFN-20 package size constraints and thermal dissipation needs for the 1 A output current capability in enclosed environments.

Part Context

This part belongs to the MP8128 series of specialized voltage regulators. It is distinct from general-purpose buck or buck-boost converters by its fixed high-voltage boost architecture. The series targets niche applications in satellite communications where protocol integration reduces external component count.

Replacement Considerations

The MP8128GQ-Z is a documented variant within the same family. Verify if the Z suffix indicates a different packaging format or minor specification adjustment while maintaining functional compatibility for LNB applications.

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.