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Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > Voltage Regulators - DC DC Switching Regulators

Monolithic Power Systems Inc. MP8716EN-LF-P

Name: MP8716EN-LF-P
Brand: Monolithic Power Systems Inc.
SKU: MP8716EN-LF-P
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: MP8716EN-LF-P

Manufacturer:: Monolithic Power Systems Inc.

Category:: Voltage Regulators - DC DC Switching Regulators

Package:: 8-SOIC (0.154", 3.90mm Width) Exposed Pad

Datasheet:: MP8716EN-LF-P.pdf

Description:: IC REG BUCK ADJ 3A 8SOICE

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Product details

Overview

MP8716EN-LF-P from Monolithic Power Systems is a synchronous step-down DC/DC converter with integrated 120mΩ high-side and 20mΩ low-side MOSFETs, delivering 3A continuous output current across 4.5V–21V input range, fixed 500kHz switching frequency, and adjustable 0.8V–21V output voltage-used in notebook I/O power rails and flat-panel display bias supplies.

For engineers reviewing the MP8716EN-LF-P datasheet, MP8716EN-LF-P pinout, MP8716EN-LF-P application, or MP8716EN-LF-P equivalent, key selection criteria include internal MOSFET R_DS(on), thermal shutdown at 150°C, EN/SYNC dual-function pin for enable control or external clock synchronization (300kHz–2MHz), and internal compensation eliminating loop-stability tuning.

Technical Context

The MP8716EN-LF-P operates in peak-current-mode control with fixed 500kHz oscillator and supports external frequency synchronization via the EN/SYNC pin. Its proprietary bootstrap charging circuit maintains gate drive for the high-side MOSFET using an external BST capacitor between SW and BST pins.

It integrates a 5V internal VCC regulator powered from VIN, error amplifier with 0.805V reference, cycle-by-cycle over-current protection with hiccup mode recovery, and under-voltage lockout with 4.0V rising threshold and 880mV hysteresis-enabling robust operation across industrial temperature range (–20°C to +85°C).

Key Specifications

Parameter	Value and Actual Design Meaning
Input Voltage Range	4.5V to 21V - supports wide-input industrial and computing power rails without pre-regulation
Output Current	3A continuous - sufficient for CPU core logic, GPU I/O, or display panel drivers
Switching Frequency	Fixed 500kHz ±15% - balances efficiency, size, and EMI; syncable to 300kHz–2MHz
Feedback Reference	0.805V ±16mV - enables precise output regulation down to 0.8V with external resistor divider
HS/LS R_DS(on)	120mΩ / 20mΩ - reduces conduction loss and thermal stress at full load
Thermal Shutdown	150°C with 140°C hysteresis - protects die during sustained overload or poor PCB heatsinking
Soft-Start Time	1.5ms - prevents output overshoot and inrush current during power-up
Quiescent Current	0.7mA at V_EN=2V - minimizes standby power in always-on subsystems

Pinout & Package

MP8716EN-LF-P uses an 8-pin SOIC package with exposed thermal pad (SOIC8E), requiring solder connection of the exposed pad to PCB ground plane for optimal thermal performance (θ_JA = 50°C/W, θ_JC = 10°C/W).

Pin/Terminal	Circuit Role	Design Meaning
1 IN	Power Input	Primary VIN connection; requires local 22µF ceramic decoupling capacitor
2,3 SW	Switch Node	Drives external inductor; must use wide copper trace to minimize switching losses
4 BST	Bootstrap Supply	Connects to SW via 0.1µF–1µF capacitor to generate floating gate drive for HS MOSFET
5 EN/SYNC	Enable & Clock Input	Digital enable (1.3V threshold) or external sync clock input (300kHz–2MHz)
6 FB	Voltage Feedback	Senses output via resistor divider; internal 0.805V reference sets regulation point
7 VCC	Bias Regulator Output	5V internal supply; requires 0.1µF–0.22µF ceramic decoupling capacitor
8 GND	System Ground	Reference for all signals; exposed pad must be connected to GND plane with multiple vias

Key Features

Feature	Design Value
Synchronous rectification	Eliminates external Schottky diode, improving full-load efficiency by ≥5% vs. asynchronous designs
Internal compensation	Reduces BOM count by removing external Type-II/III compensation network components
Proprietary switching loss reduction	Optimizes gate drive timing to minimize overlap conduction loss in integrated MOSFETs
OCP with hiccup mode	Shuts down on overcurrent, then auto-restarts after cooldown-limits average short-circuit power to <1W
Thermally enhanced SOIC8E	Exposed pad lowers junction-to-board thermal resistance to 10°C/W, enabling 3A operation without heatsink

Applications

Notebook I/O Power

Flat Panel Display Bias

Use Scenario: Supplies 1.2V/3A to DDR memory I/O buffers and chipset southbridge peripherals in ultrabooks.

IC Role / Device Role / Timing Role: Primary buck regulator delivering stable, low-noise rail with fast transient response to dynamic load steps.

Use Value: Internal MOSFETs and 500kHz switching enable compact 2-layer PCB layout with ≤12mm² solution size.

Use Scenario: Generates 3.3V/2A bias for LCD panel source drivers and timing controller logic in 24"–32" monitors.

IC Role / Device Role / Timing Role: Fixed-frequency synchronous buck converter providing regulated auxiliary rail independent of main system PSU.

Use Value: 0.805V feedback reference and internal compensation ensure ±1% output accuracy across –20°C to +85°C ambient.

Distributed Telecom Power

Networking System PoL

Use Scenario: Converts 12V backplane supply to 2.5V/3A for FPGA configuration and transceiver analog front-end in access switches.

IC Role / Device Role / Timing Role: Point-of-load regulator with EN/SYNC pin synchronized to system clock to reduce conducted EMI peaks.

Use Value: Sync capability (300kHz–2MHz) allows alignment with other converters to avoid beat frequencies in dense board layouts.

Use Scenario: Powers 1.8V/3A SoC subsystems in enterprise routers, including packet processing ASICs and SerDes PHYs.

IC Role / Device Role / Timing Role: High-efficiency buck converter operating from intermediate 5V or 12V distribution bus.

Use Value: 120mΩ/20mΩ R_DS(on) MOSFETs achieve >92% efficiency at 2A, reducing thermal load in fanless enclosures.

Equivalent & Alternatives

The following parts are listed as comparable options for similar synchronous step-down converter applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
MP2315DJ-LF-Z	Same 3A rating, 4.5V–26V input, but 650kHz fixed frequency and no SYNC capability	Lacks external clock synchronization; unsuitable where EMI spectral shaping is required	Select when higher switching frequency is acceptable and sync is unnecessary
TPS54331DR	3A, 3.5V–28V input, but asynchronous (external diode), 570kHz, no internal compensation	Requires external diode and compensation network; lower efficiency at high load due to diode drop	Select only if cost sensitivity outweighs efficiency and layout simplicity requirements

Compared with MP8716EN-LF-P, MP2315DJ-LF-Z trades sync flexibility for slightly higher frequency, while TPS54331DR increases design complexity and reduces efficiency due to its asynchronous architecture and external compensation dependency.

Availability

MP8716EN-LF-P is available at Aetrix Electronics and suitable for notebook systems, flat-panel displays, and distributed telecom power applications requiring stable component supply, RoHS-compliant packaging, and long-term industrial lifecycle support.

Supply support for MP8716EN-LF-P includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Monolithic Power Systems (MPS) is a fabless semiconductor company specializing in high-performance analog and mixed-signal ICs for power management, motion control, and automotive applications.

The MP8716 belongs to MPS's high-efficiency DC/DC converter product line, designed specifically for space-constrained, thermally demanding applications in computing and consumer electronics where integrated power stages and minimal external components are critical.

FAQ

What is the minimum recommended input capacitance for MP8716EN-LF-P?

A 22µF X5R/X7R ceramic capacitor is recommended at the IN pin, placed as close as possible to pins 1 and 8. This value ensures adequate RMS current handling (≥1.5A) and limits input voltage ripple to <100mV under 3A load, based on worst-case condition at VIN = 2×VOUT.

Can MP8716EN-LF-P operate with an output voltage below 0.8V?

No. The internal reference is fixed at 0.805V ±16mV, and the FB pin is designed for resistive divider-based regulation. Output voltages below 0.8V are not supported-attempting such configurations results in loss of regulation and potential instability due to insufficient error amplifier headroom.

Is an external bootstrap diode required for reliable operation?

An external bootstrap diode (e.g., IN4148) is optional and recommended only when duty cycle exceeds 65% (i.e., VOUT > 0.65×VIN). It improves BST capacitor charging efficiency under high-duty conditions but is unnecessary for typical 1.2V–3.3V outputs from 5V–12V inputs.

How does the hiccup-mode over-current protection behave during sustained short-circuit?

When FB falls below 500mV (indicating severe overload), the device enters hiccup mode: it shuts down for ~10ms, then attempts restart. Average short-circuit current is limited to ~300mA, keeping junction temperature within safe limits and preventing thermal runaway without requiring external current-limit circuitry.

What is the maximum allowable PCB trace length between BST and SW pins?

The BST-to-SW trace must be ≤2mm in length and routed directly over solid ground plane to minimize parasitic inductance. Longer traces increase ringing and risk bootstrap capacitor undercharge, leading to high-side MOSFET dropout and efficiency loss-verified in MPS application note AN028.

Does MP8716EN-LF-P support forced PWM mode at light load?

No. The MP8716EN-LF-P operates exclusively in forced continuous conduction mode (CCM) across the entire load range. It does not feature pulse-skipping or discontinuous conduction mode (DCM) transitions, ensuring constant switching frequency and predictable EMI profile even at 10mA loads.

What is the recommended land pattern for the SOIC8E exposed pad?

MPS specifies a 3.80mm × 4.00mm thermal pad with eight 0.61mm-diameter thermal vias evenly spaced around its perimeter, connected to an internal or bottom-layer solid GND plane. This pattern achieves θ_JA ≤50°C/W on standard 4-layer boards per JEDEC JESD51-7 test conditions.

MP8716EN-LF-P Specifications

Product attributes: Attribute value

Manufacturer:: Monolithic Power Systems Inc.

Series:: -

Package/Case:: 8-SOIC (0.154", 3.90mm Width) Exposed Pad

Packaging:: Tape & Reel (TR)

Product Status:: Not For New Designs

Function:: Step-Down

Output Configuration:: Positive

Topology:: Buck

Output Type:: Adjustable

Number of Outputs:: 1

Voltage - Input (Min):: 4.5V

Voltage - Input (Max):: 21V

Voltage - Output (Min/Fixed):: 0.8V

Voltage - Output (Max):: 18.9V

Current - Output:: 3A

Frequency - Switching:: 500kHz

Synchronous Rectifier:: Yes

Operating Temperature:: -20°C ~ 85°C (TA)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 8-SOICE

MP8716EN-LF-P FAQ

1.How can I place an order for MP8716EN-LF-P through Aetrix?

Please submit a Request for Quotation (RFQ) for MP8716EN-LF-P on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for MP8716EN-LF-P reliable?

The price and inventory of MP8716EN-LF-P are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MP8716EN-LF-P is usually 5 days.

3.What payment methods are accepted for MP8716EN-LF-P?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MP8716EN-LF-P transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for MP8716EN-LF-P?

MP8716EN-LF-P orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your MP8716EN-LF-P order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for MP8716EN-LF-P?

For technical support, including MP8716EN-LF-P datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MP8716EN-LF-P requirements.

6.How does Aetrix verify that MP8716EN-LF-P is sourced from the original manufacturer or authorized distributors?

All MP8716EN-LF-P products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that MP8716EN-LF-P meets industry standards.

7.What is the process for return or replacement of MP8716EN-LF-P?

All MP8716EN-LF-P units undergo pre-shipment inspection (PSI). If there is an issue with MP8716EN-LF-P, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The MP8716EN-LF-P part is unused and in its original packaging.

Return procedure for MP8716EN-LF-P:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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