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Monolithic Power Systems Inc. MPM3808GLE-12-AEC1-Z
- Part No.:
- MPM3808GLE-12-AEC1-Z
- Manufacturer:
- Monolithic Power Systems Inc.
- Category:
- DC DC Converters
- Package:
- 15-PowerLFQFN Module
- Datasheet:
-
MPM3808GLE-12-AEC1-Z.pdf
- Description:
- 5.5V, 3A, SYNCHRONOUS STEP-DOWN
- Quantity:
- Payment:
- Shipping:
Inventory:4,978
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Product details
Overview
MPM3808GLE-12-AEC1-Z from Monolithic Power Systems is an AEC-Q100 Grade 1 qualified, fully integrated synchronous step-down power module with built-in inductor and MOSFETs, delivering up to 3A continuous output current at a fixed 1.2V output. It operates from 2.5V–5.5V input, features constant-on-time (COT) control for fast transient response, and includes power good (PG), enable (EN), soft-start (SS), and output discharge functions. It is designed for automotive ADAS sensors and camera modules requiring compact, thermally robust, and EMI-optimized DC/DC conversion.
For engineers reviewing the MPM3808GLE-12-AEC1-Z datasheet, MPM3808GLE-12-AEC1-Z pinout, MPM3808GLE-12-AEC1-Z application, or MPM3808GLE-12-AEC1-Z equivalent, key selection criteria include its 1.2V ±2% output regulation accuracy over –40°C to +150°C junction temperature, 2.4MHz switching frequency, wettable-flank QFN-15 package for automated optical inspection, and integrated protections including cycle-by-cycle current limiting, thermal shutdown, and hiccup-mode OVP/SCP.
Technical Context
The MPM3808GLE-12-AEC1-Z implements a constant-on-time (COT) control architecture with VIN feed-forward, enabling stable 2.4MHz switching across its full 2.5V–5.5V input range and maintaining tight line/load regulation. Its internal 0.6V reference compares against FB voltage-floating in fixed-output mode-to regulate VOUT = 1.2V with ±2% tolerance over temperature and load.
It integrates 65mΩ high-side and 35mΩ low-side MOSFETs, a 470nH inductor (±20%), and a complete compensation network. Protection logic includes valley current limit (3A typ), peak current limit (5A typ), reverse current limit (1.2A), and thermal shutdown at 170°C with 20°C hysteresis-enabling reliable operation in automotive under-hood environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.2V ±2% (1.176V–1.224V) over –40°C to +150°C TJ - ensures stable core rail for automotive SoCs and image sensors. |
| Max Output Current | 3A continuous - supports high-current imaging pipelines and radar signal processors without external heatsinking. |
| Input Voltage Range | 2.5V to 5.5V - compatible with 3.3V and 5V automotive supply rails, including battery-backed systems with brownout resilience. |
| Switching Frequency | 2.4MHz (2.0–2.64MHz) - enables use of small external capacitors and reduces EMI fundamental energy above AM band. |
| Quiescent Current | 21µA in sleep mode - extends battery life in always-on ADAS camera modules during vehicle sleep states. |
| Thermal Shutdown | 170°C with 20°C hysteresis - prevents permanent damage during sustained overload or poor PCB thermal design. |
| Package | QFN-15 (3mm × 4mm × 1.6mm) with wettable flanks - supports AOI inspection and improves solder joint reliability in automotive reflow profiles. |
Pinout & Package
MPM3808GLE-12-AEC1-Z is housed in a wettable-flank QFN-15 package (3mm × 4mm × 1.6mm) with exposed thermal pad. Pin 15 (DNC) is internally connected to SW and must remain unconnected on PCB.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 FB | Feedback reference input | Floating in fixed-output mode; not used - eliminates external resistor divider and associated layout sensitivity. |
| 2 PG | Open-drain power-good indicator | Pulled high when VOUT ≥ 90% of 1.2V (≥1.08V); signals system controller that regulated output is valid. |
| 3 VIN | Main input supply | Accepts 2.5V–5.5V; requires local 10µF ceramic decoupling to suppress high-frequency switching noise. |
| 4–6 SW | Switch node | Internal connection to high-side MOSFET drain and integrated inductor - carries high di/dt; requires short, low-inductance routing. |
| 7–9 OUT | Power output | Delivers regulated 1.2V; connects directly to load and output capacitor bank (e.g., 22µF X5R). |
| 10–11 GND | Ground reference | Low-impedance return path for input/output currents; must connect to solid ground plane via multiple vias. |
| 12 EN | Enable control | Active-high digital input; 0.9V rising threshold enables startup; internal 2MΩ pull-down allows default-off behavior. |
| 13 SS | Soft-start timing | Connects to external capacitor (≥1nF) to linearly ramp VOUT and prevent inrush current into downstream capacitance. |
| 14 OUT_S | Output voltage sense & discharge path | Senses VOUT for regulation and provides 150Ω discharge path to GND when disabled - avoids floating rail during shutdown. |
| 15 DNC | No-connect terminal | Internally tied to SW; must be left unconnected and un-routed - prevents unintended parasitic coupling. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for –40°C to +150°C junction operation - meets automotive power rail reliability requirements without derating. |
| Integrated inductor and MOSFETs | Eliminates 6 external components (inductor, HS/LS FETs, bootstrap cap, feedback resistors, compensation network) - reduces BOM count and board area by >40%. |
| MeshConnect™ flip-chip packaging | Reduces package inductance and improves thermal resistance (θJC = 10°C/W on EVB) - enhances EMC performance and power density. |
| Advanced Asynchronous Modulation (AAM) | Enables discontinuous conduction mode below ~100mA load while maintaining >85% efficiency - critical for low-power camera standby modes. |
| Wettable flank leads | Supports automated optical inspection (AOI) of solder joints - ensures manufacturing traceability and field-reliability in automotive production. |
Applications
| Camera Modules | ADAS Sensors |
|---|---|
Use Scenario: Compact rear-view and surround-view camera modules in L2+ ADAS platforms requiring always-on 1.2V core supply. IC Role / Device Role / Timing Role: Primary point-of-load regulator converting 3.3V or 5V domain rail to clean 1.2V for CMOS image sensor and ISP cores. Use Value: 2.4MHz fSW minimizes output ripple (<15mVpp) and enables small 22µF ceramic output caps - reducing camera PCB footprint by 30% vs. lower-frequency alternatives. |
Use Scenario: Radar front-end power delivery in 77GHz automotive radar modules where thermal margin and EMI are critical. IC Role / Device Role / Timing Role: High-efficiency, thermally robust DC/DC converter supplying 1.2V to RF transceiver and DSP subsystems. Use Value: Integrated 470nH inductor and 65mΩ/35mΩ MOSFETs achieve <1.2W total loss at 3A - enabling operation at 105°C ambient without forced air cooling. |
| Automotive Infotainment | Automotive V2X |
Use Scenario: Powering application processors and memory interfaces in head-unit infotainment systems with strict EMC Class 5 compliance. IC Role / Device Role / Timing Role: Secondary buck regulator generating 1.2V core voltage from main 5V domain, synchronized via COT control. Use Value: MeshConnect™ package and 2.4MHz switching reduce conducted EMI by >10dB at 150MHz - simplifying EMI filter design and passing CISPR-25 Level 5. |
Use Scenario: Onboard telematics control units (TCUs) implementing DSRC or C-V2X communication stacks requiring ultra-low quiescent current. IC Role / Device Role / Timing Role: Always-on 1.2V supply for secure boot ROM and cryptographic accelerators during vehicle sleep mode. Use Value: 21µA sleep-mode IQ extends backup battery life to >120 days - meeting OEM requirements for 3-month parking mode operation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous step-down power module applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Texas Instruments TPSM84203 | Fixed 1.2V output, 3A, 2.2MHz fSW, QFN-15 (3×4mm), but lacks wettable flanks and AEC-Q100 qualification. | Targeted at industrial/commercial rather than automotive - unsuitable for production ADAS systems requiring AEC-Q100 traceability. | Select only for non-automotive prototypes where AOI and qualification are not required. |
| Analog Devices LTM4624 | 1.2V fixed, 4A, 3MHz fSW, BGA-25 (6.25×6.25mm), AEC-Q100 Grade 1, but larger footprint and higher cost. | Higher current and frequency support more demanding SoCs, but 6.25mm² area increases PCB cost and limits placement near sensors. | Choose when >3A headroom or tighter transient response is needed - accept 2.6× larger area and 35% higher unit cost. |
Compared with TPSM84203 and LTM4624, the MPM3808GLE-12-AEC1-Z uniquely balances AEC-Q100 Grade 1 compliance, wettable-flank manufacturability, 3A capability, and minimal 12mm² footprint - making it optimal for space-constrained, production-grade automotive camera and radar modules.
Availability
MPM3808GLE-12-AEC1-Z is available at Aetrix Electronics and suitable for automotive camera modules, ADAS sensor power supplies, infotainment processor cores, and V2X telematics units requiring stable component supply with full AEC-Q100 traceability and long-term automotive lifecycle support.
Supply support for MPM3808GLE-12-AEC1-Z 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 and modules, with design centers in the US, China, and Taiwan, and global manufacturing partnerships.
The MPM3808 product line delivers fully integrated, AEC-Q100-qualified power modules targeting automotive ADAS, infotainment, and body electronics - emphasizing compact size, thermal robustness, and EMI resilience in harsh environments.
FAQ
What is the purpose of the OUT_S pin on the MPM3808GLE-12-AEC1-Z?
The OUT_S pin serves dual functions: it provides precise output voltage sensing for regulation feedback and activates an internal 150Ω discharge path to ground when the device is disabled. This ensures rapid, controlled discharge of the output capacitor during shutdown-preventing floating rails that could disrupt downstream logic or cause latch-up in adjacent circuits.
Does the MPM3808GLE-12-AEC1-Z require external compensation components?
No. The MPM3808GLE-12-AEC1-Z integrates a complete compensation network-including error amplifier, ramp generator, and internal compensation capacitors-eliminating the need for external RC networks. This simplifies design, improves stability across temperature and load, and reduces PCB area versus controller-based solutions.
How does the constant-on-time (COT) control improve transient response?
COT control eliminates traditional voltage-loop compensation, allowing immediate high-side MOSFET turn-on whenever the FB voltage drops below the 0.6V reference. Combined with VIN feed-forward, this achieves sub-microsecond load-step response-critical for powering burst-mode image sensors and radar DSPs with sudden current demands.
Can the MPM3808GLE-12-AEC1-Z operate at 100% duty cycle?
Yes. The device supports 100% duty cycle operation in dropout conditions-when VIN approaches VOUT-by holding the high-side MOSFET continuously on. This maintains regulation down to VIN = VOUT + 0.1V, enabling stable 1.2V output even from a sagging 1.3V backup rail during cold-crank events.
What is the role of the DNC pin (Pin 15) and how should it be handled on the PCB?
Pin 15 (DNC) is internally connected to the SW node and must remain unconnected on the PCB-no trace, pad, or via should be routed to it. Placing copper or vias under this pad creates parasitic inductance and risk of shorting to adjacent SW pins, degrading EMI performance and potentially causing oscillation or thermal failure.
Is the 1.2V output voltage adjustable via external resistors?
No. The MPM3808GLE-12-AEC1-Z is a fixed-output variant: its internal feedback divider is laser-trimmed to deliver precisely 1.2V ±2%. The FB pin (Pin 1) must be left floating-connecting external resistors will disrupt regulation and may damage the internal reference circuitry.
How does the AAM mode improve light-load efficiency?
AAM mode reduces switching frequency and disables non-essential blocks (e.g., error amplifier, PWM comparator) under light loads (<100mA), lowering quiescent current to 21µA. Unlike standard PFM, AAM uses zero-current detection to maintain DCM operation-avoiding audible noise and improving regulation accuracy at microamp loads.
MPM3808GLE-12-AEC1-Z Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Monolithic Power Systems Inc.
- Series:
- -
- Package/Case:
- 15-PowerLFQFN Module
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Non-Isolated PoL Module
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2.5V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output 1:
- 1.2V
- Voltage - Output 2:
- -
- Voltage - Output 3:
- -
- Voltage - Output 4:
- -
- Current - Output (Max):
- 3A
- Power (Watts):
- -
- Voltage - Isolation:
- -
- Applications:
- ITE (Commercial)
- Features:
- Adjustable Output, Remote On/Off, Remote Sense
- Operating Temperature:
- -40°C ~ 150°C
- Efficiency:
- -
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount, Wettable Flank
- Supplier Device Package:
- 15-QFN (3x4)
- Control Features:
- -
- Approval Agency:
- -
- Standard Number:
- -
MPM3808GLE-12-AEC1-Z FAQ
1.How can I place an order for MPM3808GLE-12-AEC1-Z through Aetrix?
Please submit a Request for Quotation (RFQ) for MPM3808GLE-12-AEC1-Z 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 MPM3808GLE-12-AEC1-Z reliable?
The price and inventory of MPM3808GLE-12-AEC1-Z are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MPM3808GLE-12-AEC1-Z is usually 5 days.
3.What payment methods are accepted for MPM3808GLE-12-AEC1-Z?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPM3808GLE-12-AEC1-Z transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MPM3808GLE-12-AEC1-Z?
MPM3808GLE-12-AEC1-Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MPM3808GLE-12-AEC1-Z 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 MPM3808GLE-12-AEC1-Z?
For technical support, including MPM3808GLE-12-AEC1-Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPM3808GLE-12-AEC1-Z requirements.
6.How does Aetrix verify that MPM3808GLE-12-AEC1-Z is sourced from the original manufacturer or authorized distributors?
All MPM3808GLE-12-AEC1-Z 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 MPM3808GLE-12-AEC1-Z meets industry standards.
7.What is the process for return or replacement of MPM3808GLE-12-AEC1-Z?
All MPM3808GLE-12-AEC1-Z units undergo pre-shipment inspection (PSI). If there is an issue with MPM3808GLE-12-AEC1-Z, 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 MPM3808GLE-12-AEC1-Z part is unused and in its original packaging.
Return procedure for MPM3808GLE-12-AEC1-Z:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MPM3808GLE-12-AEC1-Z Tags
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1S4E_0505S1.5U
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