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Microchip Technology MCP16502TAB-E/S8B
- Part No.:
- MCP16502TAB-E/S8B
- Manufacturer:
- Microchip Technology
- Category:
- DC DC Switching Controllers
- Package:
- 32-VFQFN Exposed Pad
- Datasheet:
-
MCP16502TAB-E/S8B.pdf
- Description:
- PMIC FOR SAMA5DX/SAM9X6 MPUS
- Quantity:
- Payment:
- Shipping:
Inventory:3,110
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Product details
Overview
MCP16502TAB-E/S8B from Microchip Technology is a high-performance, four-channel buck + dual-LDO PMIC designed for SAMA5DX and SAM9X6 MPUs. It delivers 1A per buck channel (Buck1–Buck4), supports 2.7V–5.5V input, operates at 2 MHz PWM with ±16.5% frequency displacement, and integrates MPU-specific sequencing, DVS, and Hibernate mode - enabling DDR memory power in wireless SOM applications.
For engineers reviewing the MCP16502TAB-E/S8B datasheet, MCP16502TAB-E/S8B pinout, MCP16502TAB-E/S8B application, or MCP16502TAB-E/S8B equivalent, key selection criteria include verified DDR voltage accuracy (±1% on Buck2), I²C-programmable DVS rate, low-noise FPWM/low-IQ modes, thermal shutdown at 160°C, and compatibility with SAMA5D2-based LPDDR2 systems requiring pre-biased start-up and active discharge.
Technical Context
The MCP16502TAB-E/S8B implements four synchronous buck regulators with 100% duty cycle capability and two 300 mA LDOs (LOUT1/LOUT2) for analog rail isolation. Its internal sequencer enforces MPU-specified startup order, with dedicated pins (LPM, HPM, PWRHLD) controlling Hibernate, Low-Power, and High-Performance modes.
Dynamic Voltage Scaling is executed via I²C-controlled DAC steps (16–64 cycles/step), while the 1 MHz I²C interface enables real-time diagnostics, fault logging, and output voltage reconfiguration. All bucks support safe start-up into pre-biased outputs and feature active discharge (25 Ω) for rapid rail collapse during state transitions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.7V to 5.5V - supports single-cell Li-ion, USB, or industrial 3.3V/5V rails without external pre-regulation. |
| Buck Output Current | 1A per channel (Buck1–Buck4) - sufficient to power CPU cores, DDR I/O, and peripheral logic in SAMA5D2-based SOMs. |
| Output Voltage Accuracy | ±1% for Buck2 (DDR), Buck3 (Core), Buck4 (CPU) - ensures stable memory interface timing and processor operation across -40°C to +125°C. |
| Switching Frequency | 2 MHz ±16.5% (I²C-selectable) - enables compact 1.5–2.2 µH inductors and reduces EMI in noise-sensitive RF co-location. |
| LDO Output Current | 300 mA per LDO (LOUT1/LOUT2) - powers sensitive analog circuits (e.g., audio PLL, ADC reference) with <0.5% load regulation. |
| Quiescent Current | <300 µA in Hibernate mode (Buck2 on, others off) - extends battery life in always-on backup domains with DDR self-refresh. |
| Shutdown Current | ≤10 µA at VIN = 4.5V, TJ = +105°C - meets ultra-low leakage requirements for long-term storage or deep sleep states. |
Pinout & Package
32-pin 5 mm × 5 mm VQFN package with exposed thermal pad (EP); RoHS-compliant, moisture sensitivity level 3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| nRSTO | Active-low open-drain reset output | Asserts system-wide reset to MPU when any buck/LDO fails or thermal shutdown triggers; requires external pull-up. |
| SELVL1 / SELV2 | 3-state input pins | Select Buck2 DDR output voltage (1.2V/1.35V/1.8V) without external resistors - eliminates feedback resistor tolerance error. |
| LPM / HPM / PWRHLD | Dedicated mode control inputs | Enable hardware-driven state transitions: Hibernate (LPM=1), High-Performance (HPM=1), and power hold during MPU-initiated shutdown. |
| SDA / SCL | I²C interface (1 MHz) | Supports full read/write access to all registers - used for DVS programming, fault status polling, and dynamic mode switching. |
| OUT1–OUT4 / LOUT1–LOUT2 | Regulated power outputs | Four buck outputs (1A each) and two LDO outputs (300 mA each) - routed to separate PCB planes for noise isolation and thermal management. |
Key Features
| Feature | Design Value |
|---|---|
| MPU-Specific Sequencing | Built-in default startup/shutdown order compliant with SAMA5DX/SAM9X6 requirements - eliminates need for external CPLD or firmware sequencing logic. |
| DDR Voltage Selection | Pin-selectable Buck2 output (1.2V/1.35V/1.8V) - enables seamless migration between LPDDR2, LPDDR3, and DDR3 memory generations. |
| Low-Noise FPWM Mode | Forced PWM operation across full load range - maintains constant 2 MHz switching frequency to avoid AM band interference in wireless applications. |
| Hibernate Mode Quiescent Current | <300 µA with Buck2 active - sustains DDR self-refresh during suspend-to-RAM with minimal battery drain. |
| ESD-Optimized Interface | 2 kV HBM protection on all pins - ensures robustness against handling ESD in manufacturing and field-replaceable module assembly. |
Applications
| Wireless SOM Power Management | SAMA5D2-Based Industrial HMI |
|---|---|
Use Scenario: Powering a SAMA5D2 SoM with LPDDR2, dual-band Wi-Fi, and touch controller in a battery-backed portable HMI. IC Role / Device Role / Timing Role: Primary PMIC delivering core (1.25V), DDR (1.2V), I/O (1.8V), and analog (3.3V/1.8V) rails with synchronized DVS and Hibernate entry/exit. Use Value: Enables 120 µA Hibernate current and 16 ms DVS transition - extending runtime in always-on display wake-up scenarios. | Use Scenario: Supplying a fanless industrial panel PC with real-time Linux, CAN interface, and video output. IC Role / Device Role / Timing Role: Central power controller managing MPU core, DDR, GPU, and peripheral LDOs with thermal warning (135°C) and overtemperature shutdown (160°C). Use Value: Provides guaranteed ±1% DDR voltage accuracy across -40°C to +85°C ambient - ensuring reliable LPDDR2 initialization and data integrity. |
| Embedded Vision Edge Node | Secure Boot Reference Design |
Use Scenario: Powering an AI vision node with SAMA5D2, MIPI camera interface, and eMMC storage operating in extended temperature environments. IC Role / Device Role / Timing Role: Four-buck regulator supplying core, DDR, I/O, and camera sensor rails; dual LDOs powering image signal processor analog blocks. Use Value: Active discharge (25 Ω) on all outputs ensures sub-100 µs rail collapse - meeting fast power-cycle requirements for secure boot verification. | Use Scenario: Supporting secure boot sequence in a tamper-resistant gateway using SAMA5D2's cryptographic engine and backup SRAM. IC Role / Device Role / Timing Role: PMIC providing backup domain (LVIN → LOUT1) and main domain (PVINx → Buck1–Buck4) with nRSTO assertion delay and PWRHLD-controlled shutdown. Use Value: Built-in nRSTO delay and PWRHLD handshake prevent race conditions during secure firmware update - eliminating risk of partial flash corruption. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar multi-rail PMIC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS65910A3RSLR | 3 buck + 5 LDO, 1.8V–5.5V input, no pin-selectable DDR voltage, 2.25 MHz fixed frequency | Targeted at OMAP4/AM335x; lacks MPU-specific Hibernate sequencing and DVS rate control | Choose for TI ecosystem designs where LDO count > buck count and DDR voltage is fixed. |
| RT5782AZSP | 4 buck + 2 LDO, 2.5V–5.5V input, I²C-programmable but no hardware LPM/HPM pins, 1.5 MHz base frequency | Designed for ARM Cortex-A9/A15; no built-in SAMA5DX sequencing defaults or SELVL1/SELV2 DDR selection | Choose when software-controlled sequencing suffices and thermal spec (125°C max) is acceptable. |
Compared with TPS65910A3RSLR and RT5782AZSP, the MCP16502TAB-E/S8B uniquely combines hardware-configurable DDR voltage selection, MPU-tuned Hibernate sequencing, and sub-300 µA operational quiescent current - making it the only option validated for SAMA5D2 LPDDR2 SOMs requiring zero-software intervention during suspend/resume.
Availability
MCP16502TAB-E/S8B is available at Aetrix Electronics and suitable for wireless SOM power management, industrial HMI subsystems, and embedded vision edge nodes requiring stable component supply, long-term lifecycle support, and automotive-grade thermal reliability (-40°C to +125°C).
Supply support for MCP16502TAB-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 is a leading provider of microcontrollers, analog components, and power management ICs, headquartered in Chandler, Arizona.
The MCP16502 product line is engineered specifically for Microchip's SAMA5DX and SAM9X6 embedded MPUs, delivering integrated DVS, hardware sequencing, and DDR-optimized regulation to simplify high-performance Linux-capable SoM designs.
FAQ
What is the maximum junction temperature rating for the MCP16502TAB-E/S8B?
The MCP16502TAB-E/S8B has a maximum junction temperature rating of +150°C, with continuous operation specified from -40°C to +125°C. Thermal shutdown activates at 160°C (typical), with 20°C hysteresis to prevent oscillation. The device uses a 5 mm × 5 mm VQFN package with exposed thermal pad to maintain safe operating temperatures under full 1A per buck load.
Does the MCP16502TAB-E/S8B support dynamic voltage scaling for all four buck channels?
Yes, the MCP16502TAB-E/S8B supports Dynamic Voltage Scaling on all four buck channels via its 1 MHz I²C interface. Each channel's output voltage is adjustable in 25 mV steps (Buck2–Buck4) or 50 mV steps (Buck1), with programmable DVS rates (16–64 clock cycles per DAC step). The MCP16502TAB-E/S8B implements this through internal DACs and slope-controlled ramp generators, enabling smooth transitions without output overshoot.
How does the MCP16502TAB-E/S8B handle pre-biased output conditions during startup?
The MCP16502TAB-E/S8B supports safe start-up into pre-biased outputs on all four buck channels. Internal circuitry detects existing output voltage before enabling the high-side FET, preventing reverse current flow and potential damage to downstream capacitors or loads. This capability is confirmed in the functional description and is essential for hot-swap or multi-rail sequencing applications where rails may be powered by backup sources prior to main PMIC activation.
What is the purpose of the SELVL1 and SELV2 pins on the MCP16502TAB-E/S8B?
The SELVL1 and SELV2 pins on the MCP16502TAB-E/S8B are 3-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, improving voltage accuracy to ±1% and simplifying BOM for LPDDR2/LPDDR3 migration - a feature explicitly documented for the MCP16502TAB-E/S8B in DS20006275B.
Can the MCP16502TAB-E/S8B operate in forced PWM mode across all load conditions?
Yes, the MCP16502TAB-E/S8B supports Forced PWM (FPWM) mode on all buck channels, maintaining constant 2 MHz switching regardless of load. In FPWM mode, output voltage accuracy is ±2% for Buck1 and ±1% for Buck2–Buck4 (at 0 mA), with load regulation ≤0.3% from 0A to 1A. This mode is selected via I²C register configuration and is critical for EMI-sensitive applications like wireless SOMs where frequency jitter must be avoided.
MCP16502TAB-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)
MCP16502TAB-E/S8B FAQ
1.How can I place an order for MCP16502TAB-E/S8B through Aetrix?
Please submit a Request for Quotation (RFQ) for MCP16502TAB-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 MCP16502TAB-E/S8B reliable?
The price and inventory of MCP16502TAB-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 MCP16502TAB-E/S8B is usually 5 days.
3.What payment methods are accepted for MCP16502TAB-E/S8B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MCP16502TAB-E/S8B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MCP16502TAB-E/S8B?
MCP16502TAB-E/S8B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MCP16502TAB-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 MCP16502TAB-E/S8B?
For technical support, including MCP16502TAB-E/S8B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MCP16502TAB-E/S8B requirements.
6.How does Aetrix verify that MCP16502TAB-E/S8B is sourced from the original manufacturer or authorized distributors?
All MCP16502TAB-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 MCP16502TAB-E/S8B meets industry standards.
7.What is the process for return or replacement of MCP16502TAB-E/S8B?
All MCP16502TAB-E/S8B units undergo pre-shipment inspection (PSI). If there is an issue with MCP16502TAB-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 MCP16502TAB-E/S8B part is unused and in its original packaging.
Return procedure for MCP16502TAB-E/S8B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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