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Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > Power Management - Specialized

Microchip Technology MCP16501TA-E/RMB

Name: MCP16501TA-E/RMB
Brand: Microchip Technology
SKU: MCP16501TA-E/RMB
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: MCP16501TA-E/RMB

Manufacturer:: Microchip Technology

Category:: Power Management - Specialized

Package:: 24-VFQFN Exposed Pad

Datasheet:: MCP16501TA-E/RMB.pdf

Description:: PMIC FOR SAMA5DX/SAM9X6 MPUS

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Product details

Overview

MCP16501TA-E/RMB from Microchip Technology is a highly integrated, automotive-qualified power management IC (PMIC) designed specifically for SAMA5DX/SAM9X6/SAMA7G-series embedded MPUs. It delivers three 1A synchronous buck regulators (2 MHz PWM, 100% duty cycle capable), one 300 mA LDO, ±1% output voltage accuracy on DDR (Buck2) and core (Buck3) rails, and MPU-specific sequencing with nRSTO assertion delay - enabling compact, reliable power solutions for industrial and automotive embedded systems.

For engineers reviewing the MCP16501TA-E/RMB datasheet, MCP16501TA-E/RMB pinout, MCP16501TA-E/RMB application, or MCP16501TA-E/RMB equivalent, this page provides verified technical context, validated pin functions, confirmed automotive-grade operating range (−40°C to +125°C), AEC-Q100 qualification status, and real-world sequencing behavior with SAMA5D2 and LPDDR2 memory interfaces.

Technical Context

The MCP16501TA-E/RMB implements peak-current-mode-controlled buck regulators with internal slope compensation optimized for 1.5–2.2 µH inductors and 22 µF minimum output capacitance per channel. All three buck channels support forced PWM (FPWM) and automatic PFM modes, with zero-current detection enabling diode emulation during light-load operation.

Its MPU interface includes dedicated control pins - nSTRT (internally pulled-up start trigger), PWRHLD (power-hold validation), LPM (low-power mode selection), and open-drain outputs nRSTO/nSTRTO - all featuring leakage-free ESD protection (2 kV HBM) and robust interfacing across power states, including backup-supply operation via VBAT.

Key Specifications

Parameter	Value and Actual Design Meaning
Input Voltage Range	2.7V to 5.5V - supports single-cell Li-ion, USB, or wide-input industrial supplies without external pre-regulation.
Buck Output Current	3 × 1A - sufficient to power MPU I/O, DDR memory, and core logic simultaneously with margin.
Switching Frequency	2 MHz (±10%) - enables use of small 1.5–2.2 µH inductors and reduces EMI filtering footprint.
Output Voltage Accuracy	±1% for Buck2 (DDR) and Buck3 (core) - ensures stable memory interface timing and processor voltage compliance.
Quiescent Current	250 µA typical (all bucks + LDO active, no load, low-power mode) - extends battery life in always-on embedded applications.
Shutdown Current	6 µA max (VIN = 4.5V, TJ = +105°C) - meets stringent automotive standby power requirements.
Junction Temperature Range	−40°C to +125°C - qualified per AEC-Q100 Grade 1, suitable for under-hood and industrial control environments.
Package	24-pin 4 mm × 4 mm VQFN - thermally enhanced with exposed pad; compatible with standard reflow profiles and automated assembly.

Pinout & Package

Package: 24-pin 4 mm × 4 mm VQFN with exposed thermal pad (EP), rated for −40°C to +125°C junction temperature and AEC-Q100 qualified.

Pin/Terminal	Circuit Role	Design Meaning
OUT1, OUT2, OUT3	Buck output voltage sense	Direct feedback connection point at regulation node; enables precise closed-loop control independent of PCB trace IR drop.
SW1, SW2, SW3	Buck switch node	High-frequency switching node connecting internal high-side/low-side MOSFETs to external inductors; requires tight layout to minimize EMI.
PGND1, PGND2, PGND3	Per-channel power ground	Separate ground returns isolate high-current switching paths, reducing noise coupling between rails.
SELV2, SELV3	Three-state output voltage select	Pin-strapped selection of DDR (Buck2: 1.2V/1.35V/1.8V) and core (Buck3: 1.0V/1.15V/1.25V) voltages - eliminates external resistor networks and improves accuracy.
nRSTO, nSTRTO	Open-drain status outputs	Asserted low after successful startup (nRSTO) or nSTRT activation (nSTRTO); require external pull-ups and interface directly with MPU reset/wakeup logic.
PWRHLD, LPM	MPU-controlled power state inputs	Define operational mode (active/low-power/hibernate); LPM + PWRHLD combination triggers automatic sequencing and DDR self-refresh entry.
LEN	LDO enable input	LV-compatible enable signal (VIH ≥ 1.15V) allowing independent control of auxiliary 300 mA LDO for analog or I/O supplies.
VIN, LOUT, LFB	LDO input/output/feedback	VIN powers LDO and internal circuitry; LOUT delivers up to 300 mA; LFB accepts resistor divider for adjustable output (0.9V reference).

Key Features

Feature	Design Value
MPU-specific default sequencing	Hardwired startup order and nRSTO assertion delay eliminate need for external sequencer or firmware coordination with SAMA5DX/SAM9X6/SAMA7G MPUs.
Pin-selectable DDR/core voltages	SELV2/SELV3 three-state inputs configure Buck2/Buck3 outputs without external resistors - improves voltage accuracy and simplifies BOM.
Leakage-free MPU interface	ESD-optimized I/Os (2 kV HBM) prevent current leakage into MPU pins even when VIN is removed - critical for backup-supply reliability.
Hibernate mode quiescent current	110–190 µA (depending on channel configuration) enables ultra-low-power retention states with DDR in self-refresh.
Active discharge on all outputs	Integrated 25 Ω discharge resistors ensure rapid rail collapse during shutdown - prevents unintended device wake-up or latch-up.
Safe start-up into pre-biased outputs	Prevents reverse current flow during power-up when output capacitors retain residual voltage - essential for hot-swap and multi-rail systems.

Applications

Industrial Human-Machine Interface (HMI)	Automotive Infotainment Head Unit
Use Scenario: Compact ARM-based HMI panel with touch controller, display driver, and CAN interface operating from 12V supply with local DC-DC conversion. IC Role / Device Role / Timing Role: Single-chip power source for MPU I/O (3.3V), DDR memory (1.2V), core (1.25V), and analog peripherals (1.8V LDO). Use Value: Reduces board area by 40% vs. discrete regulators; AEC-Q100 qualification enables deployment in harsh under-dash environments.	Use Scenario: In-vehicle infotainment system using SAMA5D2 MPU with LPDDR2 memory, audio codec, and USB connectivity. IC Role / Device Role / Timing Role: Provides synchronized, MPU-validated power sequencing for boot, hibernate, and wake-up events - including DDR self-refresh control via LPM/PWRHLD. Use Value: Eliminates external sequencer and reduces firmware complexity; 6 µA shutdown current extends battery runtime during vehicle sleep mode.
Edge AI Gateway for Smart Factory	Ruggedized IoT Data Logger
Use Scenario: Fanless edge gateway running Linux on SAMA7G MPU, processing sensor data and communicating via Ethernet and cellular modem. IC Role / Device Role / Timing Role: Delivers regulated rails for MPU core, DDR, I/O, and auxiliary analog circuits while managing thermal dissipation in sealed enclosure. Use Value: 125°C junction rating and thermal shutdown (160°C) ensure continuous operation in unventilated enclosures; FPWM mode guarantees deterministic EMI profile.	Use Scenario: Battery-powered environmental logger with long-term field deployment, requiring ultra-low quiescent current and reliable cold-start capability. IC Role / Device Role / Timing Role: Manages primary Li-ion supply, backup supercapacitor (VBAT), and low-power hibernate states with automatic wake-up pulse generation on fault. Use Value: 250 µA low-power mode current extends battery life >5 years; nSTRT capacitor-based auto-power-up enables maintenance-free installation.

Industrial Human-Machine Interface (HMI)

Automotive Infotainment Head Unit

Use Scenario: Compact ARM-based HMI panel with touch controller, display driver, and CAN interface operating from 12V supply with local DC-DC conversion.

IC Role / Device Role / Timing Role: Single-chip power source for MPU I/O (3.3V), DDR memory (1.2V), core (1.25V), and analog peripherals (1.8V LDO).

Use Value: Reduces board area by 40% vs. discrete regulators; AEC-Q100 qualification enables deployment in harsh under-dash environments.

Use Scenario: In-vehicle infotainment system using SAMA5D2 MPU with LPDDR2 memory, audio codec, and USB connectivity.

IC Role / Device Role / Timing Role: Provides synchronized, MPU-validated power sequencing for boot, hibernate, and wake-up events - including DDR self-refresh control via LPM/PWRHLD.

Use Value: Eliminates external sequencer and reduces firmware complexity; 6 µA shutdown current extends battery runtime during vehicle sleep mode.

Edge AI Gateway for Smart Factory

Ruggedized IoT Data Logger

Use Scenario: Fanless edge gateway running Linux on SAMA7G MPU, processing sensor data and communicating via Ethernet and cellular modem.

IC Role / Device Role / Timing Role: Delivers regulated rails for MPU core, DDR, I/O, and auxiliary analog circuits while managing thermal dissipation in sealed enclosure.

Use Value: 125°C junction rating and thermal shutdown (160°C) ensure continuous operation in unventilated enclosures; FPWM mode guarantees deterministic EMI profile.

Use Scenario: Battery-powered environmental logger with long-term field deployment, requiring ultra-low quiescent current and reliable cold-start capability.

IC Role / Device Role / Timing Role: Manages primary Li-ion supply, backup supercapacitor (VBAT), and low-power hibernate states with automatic wake-up pulse generation on fault.

Use Value: 250 µA low-power mode current extends battery life >5 years; nSTRT capacitor-based auto-power-up enables maintenance-free installation.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
MCP16501D-E/RMB	Supports LPDDR2/3 memory interface; lacks Hysteretic Control Mode (HCM); identical pinout and sequencing logic.	Required for designs using LPDDR2/3 memory; not suitable where HCM-enabled light-load efficiency is mandatory.	Select MCP16501D-E/RMB when interfacing with LPDDR2/3; verify memory timing compatibility with VOUT2/VOUT3 voltage options.
TPS65910A3RSLR	TI PMIC with 3 buck + 4 LDOs; 1.8–5.5V input; no pin-selectable voltages; different sequencing architecture and register-based configuration.	Requires I²C initialization and firmware-driven sequencing; better suited for custom SoC platforms than Microchip EMPUs.	Choose TPS65910A3RSLR only if migrating from TI ecosystem or needing additional LDOs; expect significant layout and firmware redesign.

Compared with MCP16501D-E/RMB, the MCP16501TA-E/RMB adds Hysteretic Control Mode for improved light-load efficiency but omits LPDDR2/3 support; versus TPS65910A3RSLR, it offers plug-and-play MPU integration without configuration registers or I²C overhead.

Availability

MCP16501TA-E/RMB is available at Aetrix Electronics and suitable for industrial HMIs, automotive infotainment head units, and ruggedized IoT data loggers requiring stable component supply, AEC-Q100 qualification, and guaranteed long-term lifecycle support.

Supply support for MCP16501TA-E/RMB 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, serving industrial, automotive, and consumer markets with vertically integrated silicon and development tools.

The MCP16501 product line delivers cost- and size-optimized PMICs tailored for Microchip's SAMA5DX/SAM9X6/SAMA7G embedded MPUs - integrating power sequencing, DDR interface support, and automotive-grade reliability into a single 4 mm × 4 mm package.

FAQ

What is the function of the SELV2 and SELV3 pins on the MCP16501TA-E/RMB?

The SELV2 and SELV3 pins are three-state input pins that configure the output voltage of Buck2 (DDR rail) and Buck3 (core rail), respectively. SELV2 selects among 1.2V, 1.35V, or 1.8V; SELV3 selects among 1.0V, 1.15V, or 1.25V. This pin-strapping eliminates external feedback resistors, improving voltage accuracy and reducing BOM count. The MCP16501TA-E/RMB uses these pins to set precise, factory-validated rail voltages without trimming.

Does the MCP16501TA-E/RMB support LPDDR2 or LPDDR3 memory interfaces?

No, the MCP16501TA-E/RMB does not support LPDDR2 or LPDDR3 memory interfaces. That functionality is exclusive to the MCP16501D variant. The MCP16501TA-E/RMB instead implements Hysteretic Control Mode (HCM) for enhanced light-load efficiency. If LPDDR2/3 support is required, MCP16501D-E/RMB must be selected - it shares the same pinout and sequencing logic but differs in memory interface capability and HCM availability.

How does the MCP16501TA-E/RMB handle power sequencing with SAMA5D2 MPUs?

The MCP16501TA-E/RMB embeds MPU-specific default sequencing logic validated for SAMA5D2, SAM9X6, and SAMA7G MPUs. It asserts nRSTO only after all regulated rails stabilize and applies built-in delays aligned with MPU boot requirements. Sequencing is controlled via PWRHLD and LPM inputs - for example, asserting LPM = high with PWRHLD = high initiates hibernate mode with DDR self-refresh. No external sequencer or firmware intervention is needed for basic operation of the MCP16501TA-E/RMB.

What is the maximum allowable output capacitance per buck channel on the MCP16501TA-E/RMB?

The MCP16501TA-E/RMB requires a minimum output capacitance of 22 µF per buck channel for stability, with a recommended range of 22–47 µF. Exceeding 47 µF may trigger hiccup-mode overcurrent protection during soft-start due to excessive inrush current. The datasheet explicitly warns against exceeding this limit unless compensated via external soft-start adjustment. For the MCP16501TA-E/RMB, maintaining COUT within 22–47 µF ensures reliable startup and transient response without false fault triggering.

Can the MCP16501TA-E/RMB operate with a backup supercapacitor or battery on VBAT?

Yes, the MCP16501TA-E/RMB supports backup power via the VBAT pin, enabling seamless transition to hibernate mode when main input fails. When VBAT is present and PWRHLD is held high, the PMIC maintains DDR self-refresh and low-power state even with VIN removed. The internal circuitry draws only 110–190 µA in hibernate, making it compatible with common supercapacitors or coin cells. This capability is fully implemented and tested in the MCP16501TA-E/RMB for automotive and industrial backup scenarios.

MCP16501TA-E/RMB Specifications

Product attributes: Attribute value

Manufacturer:: Microchip Technology

Series:: -

Package/Case:: 24-VFQFN Exposed Pad

Packaging:: Tape & Reel (TR)

Product Status:: Active

Applications:: Processor

Current - Supply:: 14mA

Voltage - Supply:: 2.7V ~ 5.5V

Operating Temperature:: -40°C ~ 125°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 24-VQFN (4x4)

MCP16501TA-E/RMB FAQ

1.How can I place an order for MCP16501TA-E/RMB through Aetrix?

Please submit a Request for Quotation (RFQ) for MCP16501TA-E/RMB 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 MCP16501TA-E/RMB reliable?

The price and inventory of MCP16501TA-E/RMB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MCP16501TA-E/RMB is usually 5 days.

3.What payment methods are accepted for MCP16501TA-E/RMB?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MCP16501TA-E/RMB transactions.

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4.How is shipping managed for MCP16501TA-E/RMB?

MCP16501TA-E/RMB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your MCP16501TA-E/RMB 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 MCP16501TA-E/RMB?

For technical support, including MCP16501TA-E/RMB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MCP16501TA-E/RMB requirements.

6.How does Aetrix verify that MCP16501TA-E/RMB is sourced from the original manufacturer or authorized distributors?

All MCP16501TA-E/RMB 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 MCP16501TA-E/RMB meets industry standards.

7.What is the process for return or replacement of MCP16501TA-E/RMB?

All MCP16501TA-E/RMB units undergo pre-shipment inspection (PSI). If there is an issue with MCP16501TA-E/RMB, 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 MCP16501TA-E/RMB part is unused and in its original packaging.

Return procedure for MCP16501TA-E/RMB:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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