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Microchip Technology MCP16502TAD-E/S8B
- Part No.:
- MCP16502TAD-E/S8B
- Manufacturer:
- Microchip Technology
- Category:
- DC DC Switching Controllers
- Package:
- 32-VFQFN Exposed Pad
- Datasheet:
-
MCP16502TAD-E/S8B.pdf
- Description:
- PMIC FOR SAMA5DX/SAM9X6 MPUS
- Quantity:
- Payment:
- Shipping:
Inventory:3,913
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Product details
Overview
MCP16502TAD-E/S8B from Microchip Technology is a high-performance, quad-buck + dual-LDO PMIC designed for SAMA5DX and SAM9X6 MPUs. It delivers four 1A buck regulators (2 MHz FPWM, 100% duty cycle), two 300 mA LDOs, ±1% voltage accuracy on DDR/Core/CPU rails, I²C-programmable DVS, and hibernate/low-power modes - enabling compact, efficient power sequencing in embedded MPU systems.
For engineers reviewing the MCP16502TAD-E/S8B datasheet, MCP16502TAD-E/S8B pinout, MCP16502TAD-E/S8B application, or MCP16502TAD-E/S8B equivalent, key selection criteria include its 32-pin VQFN package, pin-selectable DDR voltage (1.2V/1.35V/1.8V), 2.7–5.5V input range, <300 µA hibernate quiescent current, and MPU-specific sequencing with nRSTO assertion delay.
Technical Context
The MCP16502TAD-E/S8B integrates four synchronous buck converters with independent 2 MHz PWM operation, forced-PWM and auto-PFM modes, and programmable soft-start/DVS rates (16–64 clock cycles/step). Its dedicated MPU interface includes nRSTO, nSTRTO, nINTO, PWRHLD, LPM, and HPM control signals for coordinated power state transitions.
Buck2 supports pin-selectable DDR output voltages (1.2V/1.35V/1.8V) via SELVL1/SELV2 inputs, eliminating external resistor inaccuracies. The device implements thermal shutdown (160°C), overcurrent protection with user-programmable fault response, and leakage-free ESD-optimized interfacing to ensure robust MPU communication across all operating conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.7V to 5.5V - supports single-supply operation from common system rails (e.g., Li-ion, USB, or 3.3V/5V DC-DC outputs). |
| Buck Output Current | Four channels rated at 1A each - sufficient to power MPU cores, DDR memory, I/O, and peripherals without external current boosting. |
| Switching Frequency | 2 MHz ±10% (FPWM mode) - enables use of small, low-profile inductors (1.5–2.2 µH) and reduces EMI in space-constrained designs. |
| Voltage Accuracy | ±1% for Buck2 (DDR), Buck3 (Core), Buck4 (CPU) - ensures stable MPU operation within tight voltage tolerance requirements. |
| Quiescent Current | <300 µA in hibernate mode (Buck2 on, others off) - extends battery life in always-on backup or low-power retention states. |
| Shutdown Current | ≤10 µA at VIN = 4.5V, TJ = +105°C - minimizes system leakage during full power-down. |
| Package | 32-pin 5 mm × 5 mm VQFN - surface-mount footprint compatible with automated assembly and thermally enhanced PCB layout. |
Pinout & Package
32-pin 5 mm × 5 mm VQFN package with exposed thermal pad (EP). Pin numbering follows top-view layout per DS20006275B-page 3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| nRSTO | Active-low open-drain reset output | Asserts MPU reset after regulated rail stabilization; requires external pull-up for logic-level compatibility. |
| nINTO | Active-low open-drain interrupt output | Signals fault conditions (thermal, overcurrent, POK failure) or status events to MPU interrupt controller. |
| PWRHLD | Power hold input | MPU-controlled signal that maintains PMIC operation post-startup; driven low to initiate controlled shutdown sequence. |
| LPM / HPM | Low-power / high-performance mode select | Dual-input control for dynamic power-state selection: LPM = 1 enables hibernate; HPM = 1 activates DVS for performance scaling. |
| SELVL1 / SELV2 | DDR voltage selection inputs | 3-state logic pins setting Buck2 output to 1.2V, 1.35V, or 1.8V - eliminates feedback resistor tolerance errors and simplifies BOM. |
Key Features
| Feature | Design Value |
|---|---|
| MPU-specific default sequencing | Built-in startup/shutdown order compliant with SAMA5DX/SAM9X6 timing requirements, including nRSTO assertion delay and DDR self-refresh support. |
| I²C programmability (1 MHz) | Enables real-time DVS, fault logging, rail monitoring, and configuration updates without hardware changes - critical for adaptive power management. |
| 100% duty cycle capability | Allows buck regulators to maintain regulation down to VIN – VOUT ≈ 0 V, supporting ultra-low dropout operation during brown-out or low-input scenarios. |
| Active discharge resistors | Integrated 25 Ω discharge paths on all buck and LDO outputs - ensures rapid, controlled rail discharge during shutdown to meet safety and sequencing requirements. |
| Leakage-free ESD protection | Optimized interface design prevents unintended current injection into MPU during any operating condition, enhancing system reliability in noisy environments. |
Applications
| Mobile Industrial Tablet Power | Edge AI Gateway Power |
|---|---|
Use Scenario: Portable rugged tablet with SAMA5D2 MPU, LPDDR2 memory, and multiple I/O interfaces requiring reliable multi-rail power under battery and adapter operation. IC Role / Device Role / Timing Role: Primary PMIC managing core (1.25V), DDR (1.2V), I/O (1.8V), and analog (3.3V) rails with hibernate mode for instant wake-up and push-button long-press timeout for safe shutdown. Use Value: Reduces external component count by integrating four bucks and two LDOs, while ±1% DDR voltage accuracy ensures memory stability across -40°C to +125°C junction temperature. | Use Scenario: Fanless industrial gateway running Linux on SAMA5D2, interfacing with sensors, cellular modems, and Ethernet PHYs - demanding low-noise, high-efficiency, and thermal resilience. IC Role / Device Role / Timing Role: Central power controller delivering clean, sequenced supplies to MPU, DDR, and analog subsystems; uses FPWM mode for low-noise operation and thermal warning (135°C) for proactive fan control. Use Value: 2 MHz switching enables compact magnetics; <300 µA hibernate IQ extends uptime in battery-backed operation; I²C diagnostics simplify field firmware updates and health monitoring. |
| Smart HMI Controller | Secure Boot Embedded Module |
Use Scenario: Human-machine interface panel with touch controller, display driver, and secure crypto engine powered by SAM9X6 MPU. IC Role / Device Role / Timing Role: Power manager providing isolated 1.2V (core), 1.8V (I/O), 3.3V (LDO1), and 1.8V (LDO2) rails with MPU-triggered backup mode and nRSTO-synchronized boot sequence. Use Value: Pin-selectable DDR voltage allows seamless migration between LPDDR2 and DDR3 memory generations; active discharge ensures safe rail collapse before secure boot verification. | Use Scenario: Trusted execution module with tamper detection, cryptographic acceleration, and secure storage - requiring deterministic power-up timing and fault containment. IC Role / Device Role / Timing Role: Safety-critical PMIC enforcing strict power sequencing, thermal shutdown (160°C), and overcurrent fault response with configurable hiccup mode and POK validation. Use Value: Built-in thermal warning (135°C) and shutdown (160°C) thresholds enable early intervention; ≤10 µA shutdown current prevents battery drain during long-term storage. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar PMIC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS65910A3RSLR | Triple-buck + 6 LDOs; 2.7–5.5V input; no pin-selectable DDR voltage; I²C only (no dedicated MPU control pins like LPM/HPM). | Targets OMAP4/AM335x; lacks MPU-specific sequencing logic and hibernate mode optimization for SAMA5/SAM9 families. | Select when broader LDO count is needed and MPU interface simplicity is acceptable; requires external sequencing logic for SAMA5D2 compliance. |
| RT5782AZSP | Quad-buck + 2 LDOs; 2.5–5.5V input; 1.5 MHz switching; ±1.5% output accuracy; no integrated DVS or hibernate mode. | Designed for general-purpose ARM Cortex-A/M series; no MPU-specific features (nRSTO delay, PWRHLD, LPM/HPM). | Choose for cost-sensitive designs where DVS and advanced power states are not required; verify external sequencing circuitry for SAMA5D2 timing compliance. |
Compared with TPS65910A3RSLR and RT5782AZSP, the MCP16502TAD-E/S8B provides tighter voltage accuracy (±1% vs. ±1.5%), native hibernate mode with sub-300 µA IQ, and dedicated MPU control pins - reducing design complexity and validation effort for Microchip EMPU platforms.
Availability
MCP16502TAD-E/S8B is available at Aetrix Electronics and suitable for mobile industrial tablets, edge AI gateways, smart HMIs, secure boot modules, and embedded MPU reference designs requiring stable component supply, long-term lifecycle support, and automotive-grade thermal resilience (-40°C to +125°C).
Supply support for MCP16502TAD-E/S8B 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
Microchip Technology Inc. is a leading provider of microcontrollers, analog devices, FPGAs, and power management ICs, headquartered in Chandler, Arizona, with global design and manufacturing operations.
The MCP16502 product line is engineered specifically for Microchip's SAMA5DX and SAM9X6 embedded MPUs, delivering integrated, application-optimized power solutions with dynamic voltage scaling, hibernate mode, and MPU-timed sequencing - targeting industrial, automotive, and IoT edge applications.
FAQ
What is the input voltage range supported by the MCP16502TAD-E/S8B?
The MCP16502TAD-E/S8B supports an input voltage range of 2.7V to 5.5V across all PVINx, SVIN, and LVIN pins. This range accommodates common system supplies such as single-cell Li-ion batteries, USB ports, and standard DC-DC outputs. Absolute maximum ratings specify -0.3V to +6V on all supply pins, but operational functionality is guaranteed only within the 2.7–5.5V range.
How does the MCP16502TAD-E/S8B implement Dynamic Voltage Scaling (DVS)?
The MCP16502TAD-E/S8B implements DVS through its I²C interface and dedicated HPM/LPM control pins, allowing real-time adjustment of buck output voltages (e.g., Buck3 for CPU core) in response to MPU workload. DVS transition rates are programmable (16–64 clock cycles per DAC step), and the device supports both rising-only and bidirectional transitions - ensuring smooth, glitch-free voltage changes without disrupting MPU operation.
What is the purpose of the SELVL1 and SELV2 pins on the MCP16502TAD-E/S8B?
The SELVL1 and SELV2 pins on the MCP16502TAD-E/S8B are three-state inputs that configure the Buck2 output voltage for DDR memory: 1.2V (SELVL1=L, SELV2=L), 1.35V (SELVL1=H, SELV2=L), or 1.8V (SELVL1=L, SELV2=H). This pin-strapping method eliminates external feedback resistors, improves voltage-setting precision, and simplifies BOM management across memory generations.
Does the MCP16502TAD-E/S8B support hibernate mode, and what is its quiescent current?
Yes, the MCP16502TAD-E/S8B supports hibernate mode activated via the LPM pin. In this state, Buck2 remains active to sustain DDR self-refresh while other rails are disabled. Typical non-switching quiescent current is 120–150 µA, and operational quiescent current with one buck switching is ≤120 µA - enabling extended battery life in always-on retention applications.
What protection features are integrated into the MCP16502TAD-E/S8B?
The MCP16502TAD-E/S8B integrates thermal shutdown (160°C trip, 20°C hysteresis), overtemperature warning (135°C), cycle-by-cycle overcurrent limiting (1.2–2.4A peak), hiccup-mode short-circuit protection, undervoltage lockout (2.55V typical), and active discharge resistors (25 Ω) on all outputs. Fault response is user-programmable via I²C, allowing customization for system-level safety requirements.
MCP16502TAD-E/S8B Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 32-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Output Type:
- Transistor Driver
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Number of Outputs:
- 4
- Output Phases:
- 4
- Voltage - Supply (Vcc/Vdd):
- 2.7V ~ 5.5V
- Frequency - Switching:
- 2MHz
- Duty Cycle (Max):
- 100%
- Synchronous Rectifier:
- No
- Clock Sync:
- No
- Serial Interfaces:
- I2C
- Control Features:
- Current Limit, Enable
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 32-VQFN (5x5)
MCP16502TAD-E/S8B FAQ
1.How can I place an order for MCP16502TAD-E/S8B through Aetrix?
Please submit a Request for Quotation (RFQ) for MCP16502TAD-E/S8B 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 MCP16502TAD-E/S8B reliable?
The price and inventory of MCP16502TAD-E/S8B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MCP16502TAD-E/S8B is usually 5 days.
3.What payment methods are accepted for MCP16502TAD-E/S8B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MCP16502TAD-E/S8B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MCP16502TAD-E/S8B?
MCP16502TAD-E/S8B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MCP16502TAD-E/S8B 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 MCP16502TAD-E/S8B?
For technical support, including MCP16502TAD-E/S8B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MCP16502TAD-E/S8B requirements.
6.How does Aetrix verify that MCP16502TAD-E/S8B is sourced from the original manufacturer or authorized distributors?
All MCP16502TAD-E/S8B 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 MCP16502TAD-E/S8B meets industry standards.
7.What is the process for return or replacement of MCP16502TAD-E/S8B?
All MCP16502TAD-E/S8B units undergo pre-shipment inspection (PSI). If there is an issue with MCP16502TAD-E/S8B, 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 MCP16502TAD-E/S8B part is unused and in its original packaging.
Return procedure for MCP16502TAD-E/S8B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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