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Monolithic Power Systems Inc. MEZDPD3603A-85B9
- Part No.:
- MEZDPD3603A-85B9
- Manufacturer:
- Monolithic Power Systems Inc.
- Category:
- DC DC Converters
- Package:
- 12-DIP Module
- Datasheet:
-
MEZDPD3603A-85B9.pdf
- Description:
- DC DC CONVERTER
- Quantity:
- Payment:
- Shipping:
Inventory:3,978
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Product details
Overview
mEZDPD3603A-85B9 from Monolithic Power Systems is a fully integrated, programmable 36V-input DC/DC power supply module delivering up to 3A output current with adjustable 0.6–12V output voltage, I²C-based configuration, and built-in fault protection (hiccup-mode SCP, OTP at 175°C). It features a standard DIP package (16×23×6.5 mm), internal 5V LDO (VCC), and dual ground pins for low-noise operation - deployed in industrial control power rails and embedded system point-of-load regulation.
For engineers reviewing the mEZDPD3603A-85B9 datasheet, mEZDPD3603A-85B9 pinout, mEZDPD3603A-85B9 application, or mEZDPD3603A-85B9 equivalent, key selection criteria include programmable output voltage/current limits, EN/PG/SYNC signal timing behavior, I²C address configuration via external resistor, thermal derating above 60°C, and compliance with EN55022 Class B emissions without external filtering.
Technical Context
This module integrates a synchronous buck controller, power MOSFETs, compensation network, and nonvolatile one-time-programmable (OTP) memory. It supports I²C register writes (unlimited RAM access) and OTP programming (single write, 8–36V VIN required), enabling field-configurable output settings without hardware changes.
It operates across –40°C to +85°C ambient, delivers ±1% output voltage accuracy, maintains ≤30 mV peak-to-peak ripple at 5V/3A, and achieves up to 97% peak efficiency (e.g., 93.2% at 24V→12V/3A, 800 kHz). Switching frequency is programmable from 300 kHz to 1.2 MHz.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.5 V to 36 V - supports wide industrial input including 12 V, 24 V, and 36 V battery or rail systems. |
| Output Voltage Range | 0.6 V to 12 V - digitally programmable in 10 mV steps; enables precise PoL adjustment for FPGA, ASIC, or MCU cores. |
| Max Output Current | 3 A continuous - sustained at full load with ≤60°C case rise at 24 VIN/5 VOUT, verified per MIL-HDBK-217F MTBF model. |
| Efficiency (Typ) | 93.2% @ 24 V→12 V/3 A - reduces thermal load in enclosed enclosures; enables passive cooling in many applications. |
| Switching Frequency | Programmable 300–1200 kHz - allows EMI optimization and inductor size trade-off; default 500 kHz. |
| Protections | Hiccup-mode short-circuit, over-temperature (175°C trip), and power-good (PG) assertion with 1% window - ensures safe fault recovery and system monitoring. |
| EMI Compliance | Meets EN55022 Class B - validated with recommended input filter; no external ferrite or shielding required in typical layouts. |
Pinout & Package
Package: Standard DIP module, 16 mm × 23 mm × 6.5 mm, surface-mount with exposed thermal pad (bottom), RoHS-compliant, lead-free finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (SYNC) | Synchronization Input | Accepts external clock (300–1200 kHz) to align switching edges across multiple modules; eliminates beat frequencies. |
| 2 (EN) | Enable Control | Active-high logic input; 1.2 V threshold; supports sequenced power-up with external delay circuitry or microcontroller GPIO. |
| 3 & 8 (GND) | Power Ground | Dual ground terminals reduce ground loop impedance; must be connected to low-impedance PCB ground plane with multiple vias. |
| 4 (VIN) | Main Input Supply | High-current input path (≥3 A); requires short, wide trace and local 4.7 µF ceramic input capacitor per layout guidelines. |
| 5 (FT̅) | Fault Indicator Output | Open-drain active-low signal asserting during SCP, OTP failure, or OTP programming; pulled up externally to VCC or system rail. |
| 6 (PG) | Power Good Output | Open-drain status flag indicating regulated output within ±1% tolerance; used for downstream enable sequencing or system health monitoring. |
| 7 (ADD) | I²C Address Select | Resistor-programmed pin setting I²C slave address (e.g., 21h–26h); enables multi-module bus addressing without jumpers. |
| 9 (VOUT) | Regulated Output | Main power output; requires 22 µF ×2 ceramic output capacitance for 5 V/12 V configurations to meet ripple and transient specs. |
| 10 (VCC) | Internal LDO Output | Stable 5 V, 50 mA supply for external logic or level-shifting; decoupled with 1 µF ceramic capacitor placed <1 mm from pin. |
| 11 (SDA) | I²C Data Line | Bi-directional, open-drain interface; requires 4.7 kΩ pull-up to VCC; supports standard/fast-mode I²C (≤400 kHz). |
| 12 (SCL) | I²C Clock Line | Input-only clock line; driven by host controller; same pull-up as SDA; synchronizes all register reads/writes. |
Key Features
| Feature | Design Value |
|---|---|
| One-Time Programmable (OTP) Memory | Stores final output voltage, current limit, and frequency; survives power cycles and enables firmware-locked configurations. |
| Real-Time I²C Register Access | Unlimited read/write to operating parameters (e.g., VOUT trim, soft-start time, fault response) without OTP commitment. |
| Integrated 5 V LDO (VCC) | Eliminates need for external bias supply; powers I²C interface and internal logic; stable under load transients. |
| EN/PG/FT̅ Signal Set | Enables full system-level power sequencing, health monitoring, and fault logging without external supervisors or comparators. |
| Thermally Optimized DIP Package | Exposed thermal pad and dual GND pins reduce thermal resistance to PCB; achieves ≤60°C case rise at full load (24 V→5 V). |
Applications
| Industrial PLC I/O Power | Test & Measurement Equipment |
|---|---|
|
Use Scenario: Powering isolated analog input/output modules in programmable logic controllers requiring stable 5 V or 3.3 V rails with tight regulation and low noise. IC Role / Device Role / Timing Role: Primary point-of-load regulator supplying ADCs, DACs, and isolation drivers; PG signal triggers system watchdog reset on undervoltage. Use Value: ±1% line/load regulation and ≤30 mV ripple ensure measurement accuracy; hiccup-mode SCP prevents latch-up during field wiring faults. |
Use Scenario: Providing configurable bias supplies for oscilloscope front-end amplifiers, arbitrary waveform generators, and digital pattern generators. IC Role / Device Role / Timing Role: Programmable voltage source enabling rapid reconfiguration between 3.3 V, 5 V, and 12 V test channel rails; SYNC pin aligns switching noise away from sensitive analog bands. Use Value: I²C programmability eliminates manual resistor changes; EN sequencing supports synchronized channel power-up across multi-rail instruments. |
| Medical Diagnostic Imaging | Automotive ADAS ECUs |
|
Use Scenario: Delivering clean, regulated power to ultrasound beamformer ASICs and X-ray detector interfaces where EMI and thermal stability are critical. IC Role / Device Role / Timing Role: Secondary power stage converting 12 V vehicle or wall adapter input to 1.2 V core and 3.3 V I/O rails; FT̅ alerts host processor of overtemperature events during extended imaging sessions. Use Value: EN55022 Class B compliance avoids RF interference with RF receivers; -40°C to +85°C operation meets IEC 60601-1 environmental requirements. |
Use Scenario: Supplying vision processing SoCs (e.g., NVIDIA DRIVE, TI TDA4) in camera radar fusion ECUs with dynamic voltage scaling support. IC Role / Device Role / Timing Role: Configurable PoL regulator adapting output voltage based on SoC performance mode (e.g., 0.8 V low-power vs. 1.1 V high-performance); VCC powers companion CAN/FlexRay transceivers. Use Value: OTP programming locks safety-critical voltage settings; PG signal validates rail integrity before bootloading firmware. |
Availability
mEZDPD3603A-85B9 is available at Aetrix Electronics and suitable for industrial automation, test equipment, medical diagnostics, and automotive ADAS applications requiring stable component supply, programmable flexibility, and Class B EMI compliance.
Supply support for mEZDPD3603A-85B9 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, headquartered in Kirkland, WA, with global design and support centers.
The mEZD family delivers fully integrated, programmable DC/DC power modules targeting rapid prototyping and production deployment in space-constrained, thermally demanding applications - emphasizing ease of use, configurability, and regulatory compliance out-of-the-box.
FAQ
What is the difference between OTP and RAM programming modes?
OTP (one-time programmable) memory stores permanent configuration (output voltage, current limit, frequency) that persists after power loss and survives reboots; writing requires 8–36 V VIN and causes module restart. RAM registers allow unlimited real-time adjustments (e.g., VOUT trim, soft-start) but revert on power cycle unless saved to OTP.
Can mEZDPD3603A-85B9 operate without external I²C communication?
Yes - it ships pre-programmed with default settings (5 V output, 3 A limit, 500 kHz switching). All essential functions (EN, PG, FT̅) operate autonomously. I²C is optional for customization, monitoring, or multi-module coordination; no host controller is required for basic operation.
How is thermal performance validated for this module?
Thermal rise is measured per JEDEC JESD51-2: 60°C case temperature rise at full load (24 V→5 V) with 4-layer PCB, 2 oz copper, and 10 cm² exposed ground plane. Derating begins above 60°C ambient; full 3 A output is guaranteed only up to 85°C case temperature.
What external components are mandatory for reliable operation?
Mandatory components: 4.7 µF X7R ceramic input capacitor (CIN) near VIN/GND, 22 µF ×2 ceramic output capacitors (COUT) near VOUT/GND, 1 µF ceramic decoupling cap on VCC, and 4.7 kΩ pull-up resistors on SDA/SCL. Optional: ADD resistor for I²C address, SYNC clock source, and EN RC network for soft-start.
Does the module support parallel operation for higher current?
No - mEZDPD3603A-85B9 does not support current sharing or paralleling. Its SYNC pin enables phase synchronization only for EMI reduction across multiple independent modules; each must be individually configured and loaded within its 3 A rating.
Is EN polarity active-high or active-low?
EN is active-high with a 1.2 V logic threshold. Driving EN ≥1.2 V (e.g., from MCU GPIO or system supervisor) enables regulation; pulling EN <0.8 V disables output and places the module in ultra-low quiescent current state (<100 µA).
What is the minimum output voltage step resolution during I²C programming?
Output voltage is adjustable in 10 mV increments across the 0.6–12 V range. This resolution enables precise matching to SoC core voltage requirements (e.g., 0.85 V ±10 mV for low-power modes) without external feedback dividers.
MEZDPD3603A-85B9 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Monolithic Power Systems Inc.
- Series:
- -
- Package/Case:
- 12-DIP Module
- Packaging:
- Bulk
- Product Status:
- Active
- Type:
- Non-Isolated PoL Module
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 4.5V
- Voltage - Input (Max):
- 36V
- Voltage - Output 1:
- -
- Voltage - Output 2:
- -
- Voltage - Output 3:
- -
- Voltage - Output 4:
- -
- Current - Output (Max):
- -
- Power (Watts):
- -
- Voltage - Isolation:
- -
- Applications:
- ITE (Commercial)
- Features:
- Remote On/Off, OCP, OTP, OVP, SCP
- Operating Temperature:
- -40°C ~ 85°C
- Efficiency:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- -
- Control Features:
- -
- Approval Agency:
- -
- Standard Number:
- -
MEZDPD3603A-85B9 FAQ
1.How can I place an order for MEZDPD3603A-85B9 through Aetrix?
Please submit a Request for Quotation (RFQ) for MEZDPD3603A-85B9 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 MEZDPD3603A-85B9 reliable?
The price and inventory of MEZDPD3603A-85B9 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MEZDPD3603A-85B9 is usually 5 days.
3.What payment methods are accepted for MEZDPD3603A-85B9?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MEZDPD3603A-85B9 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MEZDPD3603A-85B9?
MEZDPD3603A-85B9 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MEZDPD3603A-85B9 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 MEZDPD3603A-85B9?
For technical support, including MEZDPD3603A-85B9 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MEZDPD3603A-85B9 requirements.
6.How does Aetrix verify that MEZDPD3603A-85B9 is sourced from the original manufacturer or authorized distributors?
All MEZDPD3603A-85B9 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 MEZDPD3603A-85B9 meets industry standards.
7.What is the process for return or replacement of MEZDPD3603A-85B9?
All MEZDPD3603A-85B9 units undergo pre-shipment inspection (PSI). If there is an issue with MEZDPD3603A-85B9, 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 MEZDPD3603A-85B9 part is unused and in its original packaging.
Return procedure for MEZDPD3603A-85B9:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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