Send an Inquiry

To receive a quote for your project, please fill in the following information, and we’ll get back to you promptly.

Submit Inventory List

Please fill in the following information, and we’ll get back to you promptly.

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

Monolithic Power Systems Inc. MP3432GL-P

Name: MP3432GL-P
Brand: Monolithic Power Systems Inc.
SKU: MP3432GL-P
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Compare

Part No.:: MP3432GL-P

Manufacturer:: Monolithic Power Systems Inc.

Category:: Voltage Regulators - DC DC Switching Regulators

Package:: 13-VFQFN

Datasheet:: MP3432GL-P.pdf

Description:: IC REG BOOST ADJ 13QFN

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:4,977

Please send an inquiry. Send us your inquiry, and we will respond immediately.

Product details

Overview

MP3432GL-P from Monolithic Power Systems is a fully integrated, synchronous boost converter IC with pass-through mode and programmable switching current limit. It operates from 2.7V to 13V input, delivers up to 16V output, supports 30W average load power from a 3.3V source, uses constant-off-time (COT) control for fast transient response, and integrates 6.5mΩ low-side and 10mΩ high-side MOSFETs in a QFN-13 package - used in portable power banks requiring efficient step-up from single-cell Li-ion batteries.

For engineers reviewing the MP3432GL-P datasheet, MP3432GL-P pinout, MP3432GL-P application, or MP3432GL-P equivalent, key selection considerations include its programmable peak current limit (9.3–10.7A), auto pass-through function in PSM mode when VIN > VOUT−SET, 600kHz fixed switching frequency, selectable light-load modes (PSM/FCCM/USM), and integrated thermal shutdown at 150°C.

Technical Context

The MP3432GL-P implements adaptive constant-off-time (COT) control with internal error amplifier (300 V/V gain, 450 μA/V transconductance) and COMP-based peak current regulation. Its MODE pin selects among pulse-skip (PSM), forced continuous conduction (FCCM), and ultrasonic (USM) operation - enabling optimized efficiency/noise trade-offs across load ranges.

It features dual integrated power switches (6.5mΩ LS-FET, 10mΩ HS-FET), bootstrap gate drive (BST–SW), and auto pass-through activation in PSM when VIN exceeds VOUT−SET - eliminating body-diode conduction loss and reducing quiescent current to 600μA under that condition. Protection includes programmable UVLO (2.2–2.6V rising threshold on VDD), overtemperature shutdown (150°C), and output overvoltage lockout (16.5V).

Key Specifications

Parameter	Value and Actual Design Meaning
Input Voltage Range	0.8V to 13V operating; 2.7V minimum start-up - enables direct use with discharged single-cell Li-ion (2.8V) and compatibility with wide-input industrial rails.
Output Voltage Range	Up to 16V - supports USB PD-compatible 9V/12V/15V outputs and quick-charge protocols in portable power banks.
Switching Frequency	600kHz fixed - allows compact magnetics (e.g., 1.5μH inductor) and reduces EMI filtering burden vs. lower-frequency boosters.
Peak Current Limit	Programmable 9.3–10.7A via ILIM resistor - provides precise overload protection and enables scalable power delivery across 30W avg / 40W peak loads.
Efficiency	>95% at 3.6V_IN → 9V/3A - minimizes thermal stress and extends battery runtime in space-constrained notebooks and Bluetooth speakers.
Thermal Protection	150°C junction shutdown with 25°C hysteresis - ensures safe operation during sustained high-power bursts without external thermal monitoring.
Light-Load Modes	PSM (audible), FCCM (low ripple), USM (>23kHz) - selectable via MODE pin to balance efficiency, noise, and output regulation in battery-powered systems.

Pinout & Package

MP3432GL-P is housed in a thermally enhanced QFN-13 (3mm × 4mm) package with exposed thermal pad, supporting high-power density designs and PCB-level thermal management.

Pin/Terminal	Circuit Role	Design Meaning
1 SW	Switch node	Connects drain of LS-FET and source of HS-FET; ties directly to inductor - critical for minimizing parasitic inductance and EMI.
2 VDD	Bias supply rail	Internally regulated from VIN or VOUT; powers control circuitry - requires 4.7μF local ceramic decoupling for stable startup and light-load operation.
3 SS	Soft-start control	Capacitor-to-ground sets VOUT ramp rate - prevents inrush current and stabilizes startup into large output capacitors.
4 COMP	Error amplifier output	Drives external RC compensation network - determines loop stability and transient response bandwidth.
5 FB	Voltage feedback input	Senses output via resistor divider; references 1.0V internal bandgap - enables precise output voltage setting (±1.5% over temp).
6 AGND	Analog ground	Reference for FB, COMP, and internal circuits - must be separated from PGND and tied at single point to minimize noise coupling.
7 PGND	Power ground	Return path for high-current LS-FET and inductor - connects to thermal pad; requires wide copper pour for thermal dissipation.
8 VOUT	Boost output	HS-FET drain node; supplies load and powers VDD when VIN < 3.4V - enables seamless pass-through and bidirectional bias capability.
9 ILIM	Current limit programming	Resistor-to-ground sets peak switch current - allows design-specific OCP tuning without changing layout or BOM.
10 MODE	Operating mode select	Voltage-controlled selection of PSM (0.2–0.7V), USM (0.9–1.2V), or FCCM (>1.6V) - enables dynamic efficiency optimization in firmware-controlled systems.
11 EN	Enable input	Logic-level control with 1.23V turn-on threshold; supports VIN UVLO programming - enables system-level power sequencing and battery-saving deep-sleep states.
12 VIN	Main input supply	Primary power source; bypassed locally - must exceed 2.7V at startup to ensure VDD regulation and reliable initialization.
13 BST	Bootstrap supply	Capacitor between BST and SW powers HS-FET gate driver - eliminates need for external charge pump and enables 100% duty cycle capability in pass-through.

Key Features

Feature	Design Value
Auto Pass-Through Mode	Activates in PSM when VIN > VOUT−SET, turning HS-FET fully on and LS-FET off - eliminates forward voltage drop of HS-FET body diode and reduces quiescent loss to 600μA.
Programmable Switching Peak Current Limit	Set via external ILIM resistor (e.g., 36kΩ → 10A); enables precise OCP matching to inductor saturation and PCB trace limits - avoids overdesign while ensuring robust short-circuit protection.
Adaptive COT Control	Adjusts off-time dynamically based on VIN/VOUT ratio and COMP voltage - delivers sub-10μs load transient recovery without external compensation components.
Ultrasonic Mode (USM)	Maintains switching >23kHz under light loads by forcing LS-FET on after 30μs off-time - eliminates audible coil whine while retaining PSM-level efficiency down to 1mA load.
Integrated Dual MOSFETs	6.5mΩ LS-FET + 10mΩ HS-FET in single QFN-13 - reduces bill-of-materials count, PCB area, and conduction losses versus discrete boost solutions.

Applications

Power Bank Quick Charging

Notebook USB-C PD Output

Use Scenario: Portable power bank stepping up 3.3V–4.2V Li-ion battery to 9V/12V/15V USB PD output for smartphone fast charging.

IC Role / Device Role / Timing Role: Primary synchronous boost controller regulating output voltage and current with programmable OCP and auto pass-through during high-VIN conditions.

Use Value: Delivers 30W average power with >95% efficiency at 3.6V→9V/3A, reducing thermal rise and extending usable capacity per charge cycle.

Use Scenario: Embedded boost stage in ultra-thin notebook supplying 12V/2A to USB-C PD port from 3.3V system rail.

IC Role / Device Role / Timing Role: High-efficiency DC-DC converter with FCCM mode selected for low-output-ripple performance during sustained CPU/GPU activity.

Use Value: Maintains tight line/load regulation (<±0.5%) and 600kHz switching enables small 1.5μH inductor - saving board space without compromising transient response.

Bluetooth Speaker Power Supply

Portable POS Terminal Boost

Use Scenario: Battery-powered Bluetooth speaker requiring 12V for Class-D amplifier from 3.7V Li-ion cell.

IC Role / Device Role / Timing Role: Synchronous boost IC operating in USM mode to suppress audible noise during standby and light playback.

Use Value: Eliminates coil whine below 20kHz while sustaining >85% efficiency at 10mA load - extending idle time without compromising audio fidelity.

Use Scenario: Handheld POS terminal using single-cell battery to power 5V logic and 12V display backlight simultaneously.

IC Role / Device Role / Timing Role: Dual-rail power solution where MP3432GL-P generates 12V, and downstream LDOs derive 5V - enabled by high PSRR and low-noise PSM operation.

Use Value: Achieves 600μA quiescent current in auto pass-through mode when battery voltage rises above 11.5V - maximizing battery life during intermittent use.

Equivalent & Alternatives

The following parts are listed as comparable options for similar synchronous boost converter applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
RT4801BZQW	Fixed 1.5MHz switching frequency; no pass-through mode; 4.5A max current limit; requires external Schottky diode for asynchronous operation.	Limited to ≤15W output; higher switching loss at 30W; unsuitable for VIN-near-VOUT scenarios requiring zero-drop conduction.	Select only if higher frequency (smaller inductor) outweighs efficiency and pass-through needs.
TPS61088RHLR	12V max output; 10A fixed current limit; no USM mode; 500kHz nominal frequency; integrated soft-start only (no external SS pin).	Cannot support 16V outputs required for USB PD 3.0; lacks ultrasonic mode for noise-sensitive audio applications.	Prefer when strict 12V output and TI ecosystem compatibility are prioritized over 16V headroom and acoustic performance.

Compared with RT4801BZQW and TPS61088RHLR, MP3432GL-P uniquely combines 16V output capability, auto pass-through, USM noise suppression, and 30W power delivery in a single QFN-13 package - making it optimal for next-generation portable chargers and audio devices demanding both high efficiency and silent operation.

Availability

MP3432GL-P is available at Aetrix Electronics and suitable for portable power banks, notebook USB-C PD ports, Bluetooth speaker amplifiers, and handheld POS terminals requiring stable component supply with full production traceability and long-term lifecycle support.

Supply support for MP3432GL-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 core expertise in DC-DC conversion, motor drivers, and LED lighting controllers.

The MP3432 belongs to MPS's high-efficiency synchronous boost converter product line, designed specifically for battery-powered consumer and industrial applications needing wide input range, programmable protection, and intelligent light-load management.

FAQ

What is the minimum input voltage required for MP3432GL-P to start switching?

The MP3432GL-P requires a minimum start-up input voltage of 2.7V with no external VDD bias. When an external 3V bias is applied to VDD, start-up is guaranteed down to 0.9V on VIN. This dual-start capability supports operation from deeply discharged Li-ion cells and auxiliary bias sources in multi-rail systems.

How does the auto pass-through mode function, and when is it activated?

Auto pass-through activates exclusively in PSM mode when VIN exceeds VOUT−SET by a margin sufficient to drive COMP below 0.5V for an extended period. The IC then latches HS-FET ON and LS-FET OFF, conducting directly from VIN to VOUT with only the HS-FET R_DS(ON) (10mΩ) loss - reducing quiescent current to 600μA and eliminating body-diode conduction.

Can MP3432GL-P operate with an input voltage lower than its output voltage setting?

Yes - MP3432GL-P supports input voltages as low as 0.8V during normal operation (after startup), enabling use with partially discharged batteries or low-voltage auxiliary rails. However, output regulation requires VIN ≥ 0.8V and sufficient headroom for the chosen VOUT (e.g., 3.3V VIN can regulate 9V VOUT with appropriate inductor and compensation).

What is the purpose of the BST pin, and what capacitor value is recommended?

The BST pin supplies gate drive voltage to the high-side MOSFET via a bootstrap capacitor connected between BST and SW. A 0.1μF X7R ceramic capacitor placed as close as possible to the BST and SW pins is recommended to ensure reliable HS-FET turn-on and minimize shoot-through risk during switching transitions.

How is the switching current limit programmed, and what is its tolerance?

The switching peak current limit is set by an external resistor from ILIM to AGND. With R_ILIM = 36kΩ, the limit is 10A ±0.7A (9.3–10.7A). The relationship is linear: I_PK ≈ 380A/kΩ × R_ILIM(kΩ). Tolerance derives from internal reference accuracy and resistor tolerance - typical total error is ±7% over temperature and process variation.

Does MP3432GL-P support output overvoltage protection, and what is the trip threshold?

Yes - MP3432GL-P includes internal output overvoltage protection (OVP) that triggers at 16.5V with 0.2V hysteresis. When tripped, the IC disables switching and holds the output in a high-impedance state until VIN drops below the UVLO threshold or EN is cycled - preventing damage to downstream 15V-rated USB PD loads.

What thermal management guidance applies to the QFN-13 package?

The QFN-13 package features an exposed thermal pad that must be soldered to a minimum 100mm² copper pour on the PCB's inner or outer layer, connected via ≥4 thermal vias (0.3mm diameter) to internal ground planes. With this layout, θ_JA is 31°C/W, allowing 4W continuous dissipation at 25°C ambient - sufficient for 30W boost operation with proper airflow or enclosure design.

MP3432GL-P Specifications

Product attributes: Attribute value

Manufacturer:: Monolithic Power Systems Inc.

Series:: MP

Package/Case:: 13-VFQFN

Packaging:: Tape & Reel (TR)

Product Status:: Active

Function:: Step-Up

Output Configuration:: Positive

Topology:: Boost

Output Type:: Adjustable

Number of Outputs:: 1

Voltage - Input (Min):: 0.8V

Voltage - Input (Max):: 13V

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

Voltage - Output (Max):: 16V

Current - Output:: -

Frequency - Switching:: 600kHz

Synchronous Rectifier:: Yes

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

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 13-QFN (3x4)

MP3432GL-P FAQ

1.How can I place an order for MP3432GL-P through Aetrix?

Please submit a Request for Quotation (RFQ) for MP3432GL-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 MP3432GL-P reliable?

The price and inventory of MP3432GL-P are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MP3432GL-P is usually 5 days.

3.What payment methods are accepted for MP3432GL-P?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MP3432GL-P transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for MP3432GL-P?

MP3432GL-P orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your MP3432GL-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 MP3432GL-P?

For technical support, including MP3432GL-P datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MP3432GL-P requirements.

6.How does Aetrix verify that MP3432GL-P is sourced from the original manufacturer or authorized distributors?

All MP3432GL-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 MP3432GL-P meets industry standards.

7.What is the process for return or replacement of MP3432GL-P?

All MP3432GL-P units undergo pre-shipment inspection (PSI). If there is an issue with MP3432GL-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 MP3432GL-P part is unused and in its original packaging.

Return procedure for MP3432GL-P:

1.Submit a request within 90 days.

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

Tech Hub

2026-09-03 Logic Level Shifter: How to Connect 3.3V and 5V Logic Safely

A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.

2026-09-03 74HC595 vs TPIC6B595: Output Drive, Pinout, Current, and Load Selection

The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…

2026-09-01 74HC595 Pinout, Timing, Output Current, and Applications

The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…

2026-09-01 Latch vs Flip-Flop: Timing, Differences and Design Choices

A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…

2026-08-30 D Latch Circuit: Truth Table, Timing, ICs and Applications

A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …

2026-08-28 SR Latch Explained: NOR and NAND Circuits, Truth Tables, and Applications

An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…

2026-08-27 Latch Circuit: SR and D Latches, Truth Tables, Timing, and Applications

Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…

2026-08-21 What Is an LED Driver? Types, Circuits, Dimming, and Selection

An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…

2026-08-18 Operational Amplifier (Op Amp): Basics, Configurations, Feedback and Applications

Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…

2026-08-14 Jumper Cables: How to Use, Connect and Choose Them Safely

Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…