My Inquiry
My Account
Monolithic Power Systems Inc. MP3437GRP-P
- Part No.:
- MP3437GRP-P
- Manufacturer:
- Monolithic Power Systems Inc.
- Package:
- 10-VQFN
- Datasheet:
-
MP3437GRP-P.pdf
- Description:
- IC REG BOOST PROG 9.5A 10QFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,395
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MP3437GRP-P from Monolithic Power Systems is a fully integrated, synchronous boost converter with 2.7V–16V input range, 16V maximum output, 9.5A internal switch current limit, and 600kHz fixed-frequency COT control-designed for high-efficiency power conversion in space-constrained portable systems such as AI speakers and SSD VPP rails.
For engineers reviewing the MP3437GRP-P datasheet, MP3437GRP-P pinout, MP3437GRP-P application, or MP3437GRP-P equivalent, this device delivers verified fast transient response via adaptive constant-off-time control, programmable light-load operation (PSM/FCCM/USM), automatic pass-through mode, integrated 14mΩ/21mΩ MOSFETs, and full protection including OVP, OTP, and UVLO-enabling robust, low-component-count boost designs without external diodes or compensation.
Technical Context
The MP3437GRP-P implements adaptive constant-off-time (COT) control with cycle-by-cycle current limiting on the low-side MOSFET and zero-current detection on the high-side MOSFET to ensure stable regulation across load transients. Its MODE pin enables selection among pulse-skip mode (PSM), forced continuous conduction mode (FCCM), and ultrasonic mode (USM) for optimized efficiency-noise trade-offs under light loads.
It integrates dual power MOSFETs (14mΩ LS-FET, 21mΩ HS-FET), internal soft-start (4ms), and feedback reference voltage of 1.00V ±1.5% over –40°C to +125°C. Automatic pass-through activates when VIN exceeds VOUT_SET in PSM, eliminating switching loss while maintaining regulated output via the HS-FET's body diode conduction path.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.7V to 16V start-up; 0.8V to 16V operating - supports single-cell Li-ion and wide-battery-input applications. |
| Output Voltage Range | Programmable up to 16V via FB resistor divider - enables flexible rail generation for SSD VPP, display bias, or audio amplifiers. |
| Switch Current Limit | 9.5A typical - defines maximum inductor peak current and sets safe power delivery capability (e.g., 20W from 3.3V input). |
| Efficiency | >90% at 3.3VIN → 8V/2.5A - reduces thermal stress and extends battery life in portable devices. |
| Switching Frequency | 600kHz fixed - enables compact magnetics and low-output-ripple design while avoiding AM-band interference. |
| Thermal Protection | 150°C junction shutdown with 25°C hysteresis - prevents permanent damage during overload or poor PCB thermal layout. |
| Feedback Reference | 1.00V ±1.5% over temperature - ensures accurate output regulation across industrial temperature range. |
Pinout & Package
MP3437GRP-P is housed in a thermally enhanced QFN-10 package (2mm × 2.5mm, 0.5mm pitch) with exposed thermal pad for efficient heat dissipation in high-power density layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 EN | Enable control input | Pull high to enable; programs VIN UVLO threshold and enables automatic start-up when tied to VIN. |
| 2 VDD | Internal bias supply | Must be decoupled with 4.7µF ceramic; powered by VIN (>3.4V) or higher of VIN/VOUT - critical for startup stability. |
| 3 FB | Feedback input | Connects to resistor divider from VOUT; regulates output to 1.00V reference - sets precise output voltage. |
| 4,5 GND | Power ground | Dual ground pins minimize noise coupling; analog ground should connect near Pin 4 for optimal loop stability. |
| 6 SW | Switch node | Drain of LS-FET/source of HS-FET; connects directly to inductor - high dv/dt node requiring tight layout and guard ring. |
| 7 VOUT | Regulated output | Drain of HS-FET; powers VDD when VIN < 3.4V and VOUT > VIN - enables seamless pass-through operation. |
| 8 BST | Bootstrap supply | Capacitor between BST and SW provides gate drive for HS-FET - requires 0.1µF X7R ceramic placed adjacent to pins. |
| 9 MODE | Operating mode select | Floating = PSM; >1.6V = FCCM; 0–0.6V = USM - configures light-load behavior without external logic. |
| 10 VIN | Main input supply | Bypass locally with ≥10µF ceramic; must exceed 2.7V at startup to guarantee VDD bias and reliable enable. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated dual MOSFETs | 14mΩ LS-FET + 21mΩ HS-FET eliminates external Schottky diode and reduces BOM count and footprint. |
| Adaptive COT control | Delivers sub-10µs load transient response without external compensation - simplifies design for dynamic loads. |
| Automatic pass-through mode | Enables direct VIN-to-VOUT conduction in PSM when VIN > VOUT_SET - cuts quiescent current to ~430µA and eliminates switching loss. |
| Three selectable light-load modes | PSM (efficiency), FCCM (low ripple), USM (ultrasonic, no audible noise) - configurable via single MODE pin voltage. |
| Comprehensive protection suite | OVP (16.5V), OTP (150°C), UVLO (programmable), and cycle-by-cycle current limit - ensures robust field reliability. |
Applications
| AI Speaker Power Rail | SSD VPP Generation |
|---|---|
|
Use Scenario: Powers 12V VPP supply for NAND flash programming in portable SSDs from a 3.3V system rail. IC Role / Device Role / Timing Role: Synchronous boost converter generating regulated high-voltage programming rail with fast turn-on and precise voltage accuracy. Use Value: Delivers 16V @ 200mA with >90% efficiency and <1% load regulation - meets JEDEC VPP timing and voltage tolerance requirements. |
Use Scenario: Supplies clean, stable 12V bias to MEMS microphones and DSP cores in always-on AI voice assistants. IC Role / Device Role / Timing Role: High-efficiency step-up regulator enabling ultra-low-quiescent operation in battery-powered edge AI nodes. Use Value: Achieves 430µA quiescent current in pass-through mode and maintains regulation during deep sleep - extends battery runtime by >30% vs. fixed-frequency alternatives. |
| Portable POS Terminal | Bluetooth Speaker Amplifier Supply |
|
Use Scenario: Generates 9V rail for thermal print head drivers and smart card readers in handheld point-of-sale terminals. IC Role / Device Role / Timing Role: Fully integrated boost IC delivering high peak current (up to 9.5A) for pulsed print head activation. Use Value: Supports 20W burst loads with minimal voltage droop (<50mV) due to low RDS(ON) MOSFETs and fast COT response. |
Use Scenario: Provides 15V supply to Class-D amplifier ICs in compact Bluetooth speakers powered by 3.7V Li-ion cells. IC Role / Device Role / Timing Role: Synchronous boost converter enabling high-output-power audio with low THD+N through stable rail delivery. Use Value: Maintains <100mV output ripple in FCCM mode and achieves >85% efficiency at 2A load - preserves audio fidelity and thermal margin. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous boost converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| RT4801BGE | 4.5A switch current limit, 2.5V–16V input, no MODE pin, fixed PSM only | Limited peak power (≤12W); lacks FCCM/USM flexibility and automatic pass-through | Choose for cost-sensitive, low-power applications where 9.5A capability and multi-mode control are unnecessary. |
| TPS61088RHLR | 10A switch current, 2.7V–12V input, 5.2V max VOUT, no integrated HS-FET bootstrap | Requires external bootstrap capacitor and cannot support >12V output - unsuitable for SSD VPP or 16V rails | Select only if output ≤12V and board space allows external components; not drop-in for MP3437GRP-P's 16V/9.5A use cases. |
Compared with RT4801BGE and TPS61088RHLR, MP3437GRP-P uniquely combines 16V output capability, 9.5A current limit, integrated MODE-selectable light-load operation, and automatic pass-through - making it the only option qualified for high-voltage, high-power portable boost applications requiring both efficiency and acoustic silence.
Availability
MP3437GRP-P is available at Aetrix Electronics and suitable for notebooks, AI speakers, portable POS systems, and SSD VPP rails requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for MP3437GRP-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 power management ICs, with core expertise in DC/DC converters, motor drivers, and LED drivers for consumer, industrial, and automotive markets.
The MP3437 belongs to MPS's high-current synchronous boost converter product line, engineered specifically for portable and battery-powered applications demanding high efficiency, small solution size, and intelligent light-load management.
FAQ
What is the minimum input voltage required for reliable startup of MP3437GRP-P?
The MP3437GRP-P starts up reliably at 2.7V with no external VDD bias. If an external 3V bias is applied to VDD, startup occurs as low as 0.95V input. Below 2.7V, startup depends on VDD bias level and EN pin configuration - verified minimum is 0.95V under biased conditions per datasheet Section 5.
Does MP3437GRP-P require external compensation components?
No. The MP3437GRP-P integrates internal compensation and soft-start circuitry. Its adaptive constant-off-time (COT) architecture eliminates the need for external loop compensation components - only input/output capacitors, inductor, and FB resistors are required for full operation.
How does automatic pass-through mode function, and when is it active?
Automatic pass-through activates in pulse-skip mode (PSM) when VIN exceeds the programmed VOUT_SET. The LS-FET remains off and HS-FET stays on, allowing direct conduction from VIN to VOUT. It deactivates when VOUT drops below 95% of VREF, triggering return to boost switching - confirmed in datasheet Section 16.
Can MP3437GRP-P operate with input voltages above its rated 16V maximum?
No. Absolute maximum rating for VIN is +18V (with <10ns pulse), but recommended operating maximum is 16V. Exceeding 16V risks permanent damage per Absolute Maximum Ratings table (Section 4). Input transient clamping or pre-regulation is required for systems with >16V surges.
What is the thermal performance difference between QFN-10 and TSOT23-8 packages?
The QFN-10 (MP3437GRP-P) has θJA = 44°C/W on a 2-layer JEDEC board, while TSOT23-8 (MP3437GJ) measures 52°C/W. This 18% lower thermal resistance enables the QFN package to sustain ~1.2W higher continuous power dissipation at TA = 25°C - critical for 20W applications per datasheet Section 4.
Is the MODE pin required for basic functionality?
No. The MODE pin is optional: floating defaults to pulse-skip mode (PSM), which enables automatic pass-through and highest light-load efficiency. FCCM and USM require specific voltage levels (≥1.6V or 0–0.6V), but PSM operation is fully functional without any MODE pin connection.
Which inductor series is optimized for MP3437GRP-P, and why?
MPS recommends the MPL-AL6050 series (e.g., MPL-AL6050-1R5) - a shielded, high-saturation-current inductor with 1.5µH value, 12A Isat, and low DCR. Its magnetic shielding minimizes EMI, and saturation current exceeds the 9.5A switch limit, ensuring stable operation under peak load per Typical Application schematic (Page 2).
MP3437GRP-P Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Monolithic Power Systems Inc.
- Series:
- MP
- Package/Case:
- 10-VQFN
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Up
- Output Configuration:
- Positive
- Topology:
- Boost
- Output Type:
- Programmable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 0.8V
- Voltage - Input (Max):
- 16V
- Voltage - Output (Min/Fixed):
- 0.8V
- Voltage - Output (Max):
- 16V
- Current - Output:
- 9.5A
- Frequency - Switching:
- 600kHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-QFN (2x2.5)
MP3437GRP-P FAQ
1.How can I place an order for MP3437GRP-P through Aetrix?
Please submit a Request for Quotation (RFQ) for MP3437GRP-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 MP3437GRP-P reliable?
The price and inventory of MP3437GRP-P are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MP3437GRP-P is usually 5 days.
3.What payment methods are accepted for MP3437GRP-P?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MP3437GRP-P transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MP3437GRP-P?
MP3437GRP-P orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MP3437GRP-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 MP3437GRP-P?
For technical support, including MP3437GRP-P datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MP3437GRP-P requirements.
6.How does Aetrix verify that MP3437GRP-P is sourced from the original manufacturer or authorized distributors?
All MP3437GRP-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 MP3437GRP-P meets industry standards.
7.What is the process for return or replacement of MP3437GRP-P?
All MP3437GRP-P units undergo pre-shipment inspection (PSI). If there is an issue with MP3437GRP-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 MP3437GRP-P part is unused and in its original packaging.
Return procedure for MP3437GRP-P:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MP3437GRP-P Tags
-
TPS562201DDCR
Texas Instruments
-
MC34063ABD-TR
STMicroelectronics
-
TPS561201DDCR
Texas Instruments
-
MC33063ADR
Texas Instruments
-
MC34063ADR
Texas Instruments
-
TPS560200DBVR
Texas Instruments
-
AP3012KTR-G1
Diodes Incorporated
-
TLV61048DBVR
Texas Instruments
-
AZ34063UMTR-G1
Diodes Incorporated
-
TPS562200DDCR
Texas Instruments
-
AP62300TWU-7
Diodes Incorporated
-
MC34063EBD-TR
STMicroelectronics
Tech Hub
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.
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…
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…
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…
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 …
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…
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…
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…
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…
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…
