Microchip Technology MCP16502TAB-E/S8BVAO

Overview

MCP16502TAB-E/S8BVAO from Microchip Technology is a high-performance, multi-rail PMIC designed for SAMA5DX and SAM9X6 embedded microprocessor units (MPUs), integrating four 1A synchronous buck regulators and two 300 mA LDOs. It supports Dynamic Voltage Scaling (DVS) across all buck channels, delivers ±1% output voltage accuracy on DDR (Buck2), Core (Buck3), and CPU (Buck4) rails, and operates from 2.7V–5.5V input with 2 MHz FPWM switching.

For engineers reviewing the MCP16502TAB-E/S8BVAO datasheet, MCP16502TAB-E/S8BVAO pinout, MCP16502TAB-E/S8BVAO application, or MCP16502TAB-E/S8BVAO equivalent, key selection criteria include verified DDR voltage sequencing support, I²C-programmable DVS timing, low-quiescent-current hibernate mode (<300 µA), and thermal-safe operation up to +125°C junction temperature in the 32-pin VQFN package.

Technical Context

The MCP16502TAB-E/S8BVAO implements a fully integrated power management architecture with dedicated MPU interface logic: built-in channel sequencing, nRSTO assertion delay, and LPM/HPM control pins enable seamless transition between Hibernate, Low-Power, and High-Performance modes. Its four buck converters share a common 2 MHz FPWM clock with ±16.5% programmable frequency displacement via I²C FSD[1:0] bits.

All buck channels feature 100% duty cycle capability, active discharge resistors (25 Ω), safe start-up into pre-biased outputs, and cycle-by-cycle overcurrent protection with hiccup-mode recovery. The two LDOs provide low-noise, low-PSRR (63 dB @ 1 kHz) analog rail support, with dropout voltage as low as 170 mV at 300 mA load.

Key Specifications

Pinout & Package

Package: 32-pin, 5 mm × 5 mm, 0.5 mm pitch VQFN with exposed thermal pad (EP).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar multi-rail PMIC applications.

Compared with TPS65910A3RSLR and MAX20029ATGB/V+T, the MCP16502TAB-E/S8BVAO uniquely integrates MPU-tailored sequencing, hardware-selectable DDR voltage, and sub-300 µA hibernate operation-making it optimal for SAMA5DX/SAM9X6 designs where BOM reduction and low-standby power are critical.

Availability

MCP16502TAB-E/S8BVAO is available at Aetrix Electronics and suitable for high-performance MPU power systems, industrial edge controllers, and secure embedded gateways requiring stable component supply, long-term lifecycle support, and guaranteed traceability.

Supply support for MCP16502TAB-E/S8BVAO 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, 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 tightly integrated, DVS-capable power solutions that reduce external component count and simplify compliance with JEDEC DDR voltage sequencing requirements.

FAQ

What is the primary application target for the MCP16502TAB-E/S8BVAO?

The MCP16502TAB-E/S8BVAO is purpose-built for Microchip SAMA5DX and SAM9X6 embedded MPUs. It delivers sequenced, DVS-capable power to DDR memory, MPU core, CPU, and I/O rails while integrating hardware features like SELV2 for DDR voltage selection and nRSTO for MPU reset coordination-enabling direct drop-in use in reference designs such as the SAMA5D2-Wireless SOM.

Does the MCP16502TAB-E/S8BVAO support hardware-based DDR voltage selection?

Yes, the MCP16502TAB-E/S8BVAO supports hardware-selectable DDR output voltage via the SELV2 pin, offering 1.2V, 1.35V, or 1.8V options without external resistors. This eliminates feedback network inaccuracies and simplifies migration between LPDDR2 and LPDDR3 memory generations-confirmed in DS20006275B, page 1, Features section.

What is the quiescent current of the MCP16502TAB-E/S8BVAO in hibernate mode?

In hibernate mode (LPM = 1, PWRHLD = HPM = 0), the MCP16502TAB-E/S8BVAO draws less than 300 µA typical operational quiescent current with Buck2 enabled and other channels off-sufficient to maintain DDR memory self-refresh. Shutdown current is ≤10 µA at VIN = 4.5V and TJ = +105°C, per DS20006275B, page 5, AC/DC CHARACTERISTICS table.

How does the MCP16502TAB-E/S8BVAO handle power sequencing for MPU startup?

The MCP16502TAB-E/S8BVAO includes a built-in, MPU-specific sequencing engine that asserts nRSTO only after all regulated rails reach valid POK thresholds and applies configurable delays per channel. Startup is triggered by nSTRT, sustained by PWRHLD, and coordinated with LPM/HPM pins-eliminating need for external timers or CPLDs in SAMA5DX/SAM9X6 designs.

Is the MCP16502TAB-E/S8BVAO compatible with I²C communication at 1 MHz?

Yes, the MCP16502TAB-E/S8BVAO supports full-speed I²C communication at up to 1 MHz on SDA and SCL pins, enabling rapid register access for DVS programming, fault status reads, and real-time rail monitoring. Input filters suppress noise spikes <50 ns, and electrical specs confirm VIH/VIL thresholds compliant with standard I²C levels, per DS20006275B, page 11.