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

Monolithic Power Systems Inc. MPQ9842GLE-5-AEC1-P

Name: MPQ9842GLE-5-AEC1-P
Brand: Monolithic Power Systems Inc.
SKU: MPQ9842GLE-5-AEC1-P
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: MPQ9842GLE-5-AEC1-P

Manufacturer:: Monolithic Power Systems Inc.

Category:: Voltage Regulators - DC DC Switching Regulators

Package:: 16-VQFN

Datasheet:: MPQ9842GLE-5-AEC1-P.pdf

Description:: IC REG BUCK 5V 2A 16QFN

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Product details

Overview

MPQ9842GLE-5-AEC1-P from Monolithic Power Systems is a 36V, 2A, AEC-Q100 Grade-1 qualified synchronous step-down converter with fixed 5V output, 14μA no-load quiescent current, and programmable 350kHz–2.5MHz switching frequency. It integrates 125mΩ high-side and 55mΩ low-side MOSFETs and delivers automotive-grade power conversion in QFN-16 (3mm×4mm) wettable flank packaging for ADAS camera modules and infotainment head units.

For engineers reviewing the MPQ9842GLE-5-AEC1-P datasheet, MPQ9842GLE-5-AEC1-P pinout, MPQ9842GLE-5-AEC1-P application, or MPQ9842GLE-5-AEC1-P equivalent, key selection criteria include its AEC-Q100 qualification, 5V fixed output accuracy (±2.5%), 80ns minimum on-time for high-duty-cycle operation, and support for both forced CCM and advanced asynchronous mode (AAM) to optimize light-load efficiency in battery-backed systems.

Technical Context

The MPQ9842GLE-5-AEC1-P employs peak-current-mode control with internal error amplifier and 0.8V reference for precise regulation, enabling fast transient response and simplified loop compensation. Its dual-mode operation-forced continuous conduction mode (CCM) via SYNC high or advanced asynchronous mode (AAM) via SYNC low-directly governs light-load efficiency and output ripple behavior.

Integrated BST refresh circuitry sustains >95% duty cycle operation by actively refreshing the bootstrap capacitor during low-V_IN/high-V_OUT conditions, while hiccup-mode over-current protection and thermal shutdown at 170°C ensure robust fault handling in automotive environments where input transients and ambient temperature extremes are common.

Key Specifications

Parameter	Value and Actual Design Meaning
Input Voltage Range	3.3V to 36V - supports full automotive battery range including cold-crank (4.5V) and load-dump (36V) events.
Output Voltage	Fixed 5.0V ±2.5% - eliminates external feedback resistors; enables plug-and-play integration into USB-powered peripherals and MCU I/O rails.
Continuous Output Current	2A - sufficient to power dual-core automotive microcontrollers, CAN transceivers, and sensor signal chains without external heatsinking.
Quiescent Current	14μA at no load - extends battery runtime in always-on domains like telematics and remote keyless entry receivers.
Switching Frequency	350kHz–2.5MHz (programmable or sync-capable) - allows EMI optimization and inductor size reduction; supports CISPR-25 Class 5 compliance with proper layout.
Protection Features	OCP (hiccup), SCP, thermal shutdown (170°C), UVLO (2.8V rising), PG flag - provides end-to-end fault coverage required for ASIL-B system power rails.
Package	QFN-16 (3mm×4mm) with wettable flanks - enables automated optical inspection (AOI) and improves solder joint reliability in automotive reflow profiles.

Pinout & Package

MPQ9842GLE-5-AEC1-P uses a thermally enhanced QFN-16 (3mm × 4mm) package with exposed thermal pad and wettable flank leads for automotive-grade solder joint inspection and thermal performance.

Pin/Terminal	Circuit Role	Design Meaning
1 PHASE	Synchronization phase select	Configures 0° or 180° phase alignment with external clock; tie to GND if unused to prevent floating.
2 VIN	Main input supply	Accepts 3.3–36V; requires local 10µF ceramic decoupling to suppress switching noise injection into source rail.
3,10 SW	Switch node	High-frequency drain connection of integrated HS-FET; must be routed with minimal loop area to reduce EMI.
4,9 PGND	Power ground return	Low-impedance path for switch current; requires dedicated copper pour and multiple vias to thermal pad.
5 EN	Enable control	Digital logic input (0.9–1.2V threshold); must be actively driven-never left floating-to ensure deterministic startup/shutdown.
6 SYNC	Frequency sync & mode select	Drives CCM (high) or AAM (low) before startup; also accepts 350kHz–2.5MHz external clock for synchronized multi-rail systems.
7 PG	Power good indicator	Open-drain output asserting when V_OUT is within ±10% of 5V; used for sequencing or fault reporting in multi-rail supplies.
8 BIAS	Efficiency-boosting bias supply	Accepts 5–18V external bias to reduce internal LDO losses; improves full-load efficiency by ~1.5% when used.
11 BST	Bootstrap supply	Charges via internal regulator; requires 0.1–1µF ceramic cap between BST and SW to sustain HS-FET gate drive under high duty cycles.
12 VCC	Internal regulator output	5V regulated supply for control circuitry; needs ≥1µF local decoupling to stabilize gate drivers and error amplifier.
13 AGND	Analog reference ground	Separate ground for FB, SS, and error amplifier; must be connected to PGND at single point near IC to avoid noise coupling.
14 SS	Soft-start timing	Capacitor-based ramp (10µA current source); sets inrush current limit and prevents output overshoot during power-up.
15 FB	Feedback input	Internally tied to 5V output in fixed-version; no external divider needed-reduces BOM count and layout sensitivity.
16 FREQ	Frequency programming	Resistor-to-ground sets f_SW; 180kΩ = ~475kHz, 82kΩ = ~1MHz, 27kΩ = ~2.5MHz per datasheet Equation (1).

Key Features

Feature	Design Value
AEC-Q100 Grade-1 qualification	Rated for −40°C to +125°C junction operation with full test coverage-meets automotive power rail reliability requirements without derating.
Wettable flank QFN-16 package	Enables automated X-ray and AOI inspection of solder fillets-critical for zero-defect manufacturing in Tier-1 automotive production lines.
14μA no-load IQ and 2μA shutdown current	Extends sleep-mode battery life in parked vehicle scenarios (e.g., intrusion detection, GPS logging) beyond 3 months on typical 10Ah Li-ion packs.
80ns minimum on-time	Supports 5V output from 6V input at >83% duty cycle-enables stable operation during cold-crank where VIN dips to 4.5V.
Integrated 125mΩ/55mΩ MOSFETs	Eliminates external power stage components and layout complexity; achieves >92% peak efficiency at 12V→5V/2A with 4.7µH inductor.
PG open-drain output with 10% window	Provides deterministic power sequencing signal for downstream processors and CAN controllers-no external comparator or resistor divider required.

Applications

ADAS Camera Module Power

Automotive Infotainment Head Unit

Use Scenario: Powers image sensor, ISP, and MIPI interface in front/rear-view cameras operating across −40°C to +105°C ambient.

IC Role / Device Role / Timing Role: Primary 5V buck regulator delivering clean, low-noise power with CISPR-25 Class 5 compliant EMI performance.

Use Value: Eliminates need for secondary LDO filtering; meets stringent EMC requirements without added ferrite beads or shielding cans.

Use Scenario: Supplies 5V rail to touchscreen controller, audio codec, and USB host in center-stack infotainment systems.

IC Role / Device Role / Timing Role: Fixed-output DC-DC converter providing stable voltage during engine start-stop cycles and load-dump transients.

Use Value: Maintains uninterrupted operation during 6V cold-crank dips and 36V load-dump spikes without brownout or reset.

Telematics Control Unit (TCU)

Body Control Module (BCM) Subsystem

Use Scenario: Powers LTE modem, GNSS receiver, and secure MCU in always-connected vehicle tracking units.

IC Role / Device Role / Timing Role: Low-I_Q step-down regulator enabling multi-year battery backup during vehicle parking mode.

Use Value: 14μA quiescent current reduces parasitic drain to <10µA system-level-extends 10Ah battery life to >3 years in sleep state.

Use Scenario: Supplies 5V to LIN transceivers, door lock actuators, and interior lighting drivers in distributed body electronics.

IC Role / Device Role / Timing Role: Robust power management IC with hiccup OCP and thermal shutdown protecting against shorted LIN bus or motor stall faults.

Use Value: Self-recovering fault response avoids permanent fuse blowouts-reducing warranty claims and field service visits.

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
TPS62933RTER	36V input, 3A output, 15μA IQ, but only AEC-Q100 Grade-2 (−40°C to +105°C); no wettable flanks.	Lacks Grade-1 qualification and wettable flank inspection capability-unsuitable for safety-critical ADAS zones.	Select only for non-safety infotainment or HVAC subsystems where extended temperature is not required.
LM61480QRNXTQ1	36V input, 8A output, 12μA IQ, AEC-Q100 Grade-1, but fixed 3.3V/5V variants require external feedback for 5V; larger 16-pin WQFN (4mm×4mm).	Higher current capability adds cost and board space overhead for 2A use cases; lacks integrated 5V fixed option.	Prefer when future scalability to >3A is needed; otherwise over-specified for this 2A fixed-5V requirement.

Compared with TPS62933RTER and LM61480QRNXTQ1, MPQ9842GLE-5-AEC1-P uniquely combines AEC-Q100 Grade-1, wettable flank QFN-16, fixed 5V output, and 14μA IQ in a compact footprint-making it optimal for cost-sensitive, space-constrained, and safety-compliant automotive 5V rails.

Availability

MPQ9842GLE-5-AEC1-P is available at Aetrix Electronics and suitable for automotive ADAS camera modules, infotainment head units, telematics control units, and body control module subsystems requiring stable component supply with full AEC-Q100 traceability and long-term lifecycle support.

Supply support for MPQ9842GLE-5-AEC1-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 power ICs, with design centers in the US, China, and Taiwan, and global manufacturing partnerships.

The MPQ9842 product line targets automotive power conversion with AEC-Q100 qualification, low-I_Q architecture, and integrated MOSFETs-designed specifically for ADAS, infotainment, and body electronics where reliability, efficiency, and EMI compliance are mandatory.

FAQ

What is the purpose of the BIAS pin on MPQ9842GLE-5-AEC1-P?

The BIAS pin accepts an external 5–18V supply to power the internal control circuitry, bypassing the VIN-regulated VCC LDO. When used, it reduces power dissipation and improves full-load efficiency by ~1.5%. If unused, BIAS must be floated or tied to GND-never left unconnected-to prevent leakage paths or undefined behavior.

Does MPQ9842GLE-5-AEC1-P require external feedback resistors for 5V output?

No. The "-5" suffix denotes a factory-trimmed fixed 5V output version. The FB pin is internally connected to the output, eliminating external resistors and associated layout sensitivity. This simplifies design, improves accuracy (±2.5%), and reduces BOM count versus adjustable versions.

How does the PHASE pin affect synchronization in multi-rail systems?

The PHASE pin selects 0° (PHASE high) or 180° (PHASE low) phase alignment relative to the external SYNC clock. This enables interleaved operation across multiple MPQ9842 devices to reduce input/output capacitor RMS current and lower overall EMI-critical in dense automotive PCB layouts with multiple DC-DC rails.

What is the minimum recommended soft-start capacitor value for MPQ9842GLE-5-AEC1-P?

The MPQ9842GLE-5-AEC1-P sources a constant 10µA current into the SS capacitor. A 100nF capacitor yields ~10ms soft-start time (t_SS = C_SS × 0.8V / 10µA). Values below 47nF may cause excessive inrush; above 220nF unnecessarily extends startup. Use X7R/C0G dielectric for stable timing across temperature.

Can MPQ9842GLE-5-AEC1-P operate with input voltage below 3.3V?

No. The absolute minimum input voltage is 3.3V per datasheet specifications. Below this, UVLO prevents startup. During cold-crank, automotive batteries may dip to 4.5V-well within the 3.3V–36V operating range-but sustained operation below 3.3V is not supported and will result in shutdown.

Is the PG (power good) signal active-high or open-drain?

The PG pin is an open-drain output. It pulls low when V_OUT is within ±10% of 5V (i.e., 4.5V–5.5V); otherwise, it remains high-impedance. An external pull-up resistor (typically 10kΩ to 5V or V_OUT) is required to generate a logic-high signal for monitoring or sequencing circuits.

What thermal derating applies to MPQ9842GLE-5-AEC1-P at 105°C ambient?

Using θ_JA = 43°C/W (EVB measurement), maximum allowable power dissipation at 105°C ambient is PD_MAX = (125°C – 105°C) / 43 ≈ 0.465W. At 2A/5V (10W output), efficiency must exceed 95.5% to stay within thermal limits-achievable with proper PCB copper area, thermal vias to inner layers, and airflow.

MPQ9842GLE-5-AEC1-P Specifications

Product attributes: Attribute value

Manufacturer:: Monolithic Power Systems Inc.

Series:: MPQ

Package/Case:: 16-VQFN

Packaging:: Tape & Reel (TR)

Product Status:: Active

Function:: Step-Down

Output Configuration:: Positive

Topology:: Buck

Output Type:: Fixed

Number of Outputs:: 1

Voltage - Input (Min):: 3.3V

Voltage - Input (Max):: 36V

Voltage - Output (Min/Fixed):: 5V

Voltage - Output (Max):: -

Current - Output:: 2A

Frequency - Switching:: 350kHz ~ 2.5MHz

Synchronous Rectifier:: Yes

Operating Temperature:: -40°C ~ 125°C (TJ)

Grade:: Automotive

Qualification:: AEC-Q100

Mounting Type:: Surface Mount, Wettable Flank

Supplier Device Package:: 16-QFN (3x4)

MPQ9842GLE-5-AEC1-P FAQ

1.How can I place an order for MPQ9842GLE-5-AEC1-P through Aetrix?

Please submit a Request for Quotation (RFQ) for MPQ9842GLE-5-AEC1-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 MPQ9842GLE-5-AEC1-P reliable?

The price and inventory of MPQ9842GLE-5-AEC1-P are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MPQ9842GLE-5-AEC1-P is usually 5 days.

3.What payment methods are accepted for MPQ9842GLE-5-AEC1-P?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPQ9842GLE-5-AEC1-P transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for MPQ9842GLE-5-AEC1-P?

MPQ9842GLE-5-AEC1-P orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your MPQ9842GLE-5-AEC1-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 MPQ9842GLE-5-AEC1-P?

For technical support, including MPQ9842GLE-5-AEC1-P datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPQ9842GLE-5-AEC1-P requirements.

6.How does Aetrix verify that MPQ9842GLE-5-AEC1-P is sourced from the original manufacturer or authorized distributors?

All MPQ9842GLE-5-AEC1-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 MPQ9842GLE-5-AEC1-P meets industry standards.

7.What is the process for return or replacement of MPQ9842GLE-5-AEC1-P?

All MPQ9842GLE-5-AEC1-P units undergo pre-shipment inspection (PSI). If there is an issue with MPQ9842GLE-5-AEC1-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 MPQ9842GLE-5-AEC1-P part is unused and in its original packaging.

Return procedure for MPQ9842GLE-5-AEC1-P:

1.Submit a request within 90 days.

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

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