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Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > Voltage Regulators - DC DC Switching Regulators

Microchip Technology MIC33050-AYHL-T5

Name: MIC33050-AYHL-T5
Brand: Microchip Technology
SKU: MIC33050-AYHL-T5
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: MIC33050-AYHL-T5

Manufacturer:: Microchip Technology

Category:: Voltage Regulators - DC DC Switching Regulators

Package:: 12-VFDFN Exposed Pad, 12-MLF®

Datasheet:: MIC33050-AYHL-T5.pdf

Description:: IC REG BUCK ADJ 600MA 12MLF

Quantity:: RFQ Add To RFQ list

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Product details

Overview

MIC33050-AYHL-T5 from Microchip Technology is an adjustable-output, 600 mA synchronous buck DC-DC power module with integrated inductor and HyperLight Load® control architecture. It operates from 2.7V to 5.5V input, delivers ultra-low 20 µA quiescent current, sustains >93% peak efficiency at 4 MHz PWM switching, and targets space-constrained portable instrumentation and wearable devices.

For engineers reviewing the MIC33050-AYHL-T5 datasheet, MIC33050-AYHL-T5 pinout, MIC33050-AYHL-T5 application, or MIC33050-AYHL-T5 equivalent, key selection criteria include its internal-inductor 12-pin HDFN package, fixed 4 MHz PWM mode above ~100 mA, sub-1 mA light-load efficiency retention, and compatibility with 2.2 µF ceramic output capacitors for minimal board area.

Technical Context

The MIC33050-AYHL-T5 implements a proprietary minimum on/off-time control loop enabling discontinuous conduction mode (DCM) pulse frequency modulation (PFM) at light loads and seamless transition to continuous conduction mode (CCM) at ~100 mA with stable 4 MHz switching. Its HyperLight Load® architecture avoids the trade-off between quiescent current and transient response by using an NMOS ideal rectifier and fast error comparator activation.

This design eliminates external inductor requirements while maintaining low output voltage ripple (<10 mV p-p typical), tight load regulation (±0.3%), and robust thermal performance (θ_JA = 60°C/W) across –40°C to +125°C junction temperature range - critical for RF modules and USB-powered MCU systems where layout area and thermal headroom are constrained.

Key Specifications

Parameter	Value and Actual Design Meaning
Input Voltage Range	2.7V to 5.5V - supports single-cell Li-ion, USB 5V, and regulated 3.3V rails without external LDO pre-regulation.
Output Current	600 mA - sufficient for powering ARM Cortex-M cores, BLE SoCs, and sensor hubs without derating at +85°C ambient.
Quiescent Current	20 µA typical - enables multi-year battery life in always-on wearable sensors with <1 µA shutdown current.
Switching Frequency	4 MHz nominal - allows use of compact 2.2 µF X5R/X7R ceramic output capacitors and reduces EMI filtering component count.
Efficiency	>93% peak, >85% at 1 mA - maintains high conversion efficiency across full load range, minimizing thermal rise in sealed enclosures.
Feedback Reference	400 mV - sets adjustable output via resistor divider; enables precise 1.0V–5.0V outputs with ±2.5% accuracy over temperature and line.
Junction Temp Range	–40°C to +125°C - qualified for industrial-grade operation in automotive cabin modules and ruggedized handheld test equipment.

Pinout & Package

12-pin 3 mm × 3 mm × 0.9 mm HDFN package with exposed thermal pad (ePAD) connected to PGND for optimal heat dissipation. Pin numbering follows standard top-view orientation with pin 1 marked by dot/delta.

Pin/Terminal	Circuit Role	Design Meaning
VIN (Pin 1)	Power input supply	Accepts 2.7–5.5V; requires ≥2.2 µF ceramic bypass capacitor placed adjacent to PGND to suppress high-frequency switching noise.
PGND (Pin 2)	High-current power ground	Return path for MOSFET switching current; must be routed as low-inductance plane separate from AGND to prevent coupling into control circuitry.
SW (Pins 3–6)	Internal switch node	Connects directly to integrated inductor; high dv/dt node requiring short, isolated trace routing away from SNS, CFF, and FB.
OUT (Pins 7–8)	Regulated output	Delivers final buck output; connects to ≥2.2 µF ceramic output capacitor with low ESR for ripple suppression and stability.
EN (Pin 9)	Logic enable input	Active-high control (0.8V threshold); provides micropower shutdown (<4 µA) and built-in soft-start (650 µs) to limit inrush current.
SNS (Pin 10)	Voltage sense input	Monitors output at capacitor positive terminal for accurate load regulation; used in fixed-output variants with internal resistor network.
CFF (Pin 11)	Feed-forward compensation	Connects to SNS via 560 pF capacitor; improves transient response by injecting feed-forward signal into error amplifier path.
AGND (Pin 12)	Analog reference ground	Ground return for feedback, reference, and error amplifier circuits; must be star-connected to PGND at single point near ePAD.
ePAD	Thermal and electrical ground	Exposed copper pad beneath package; soldered to large PGND copper area to achieve θ_JA = 60°C/W and sustain 600 mA continuous output.

Key Features

Feature	Design Value
Integrated inductor	Eliminates external magnetic component, reducing BOM count by one part and PCB footprint by >30% versus discrete buck solutions.
HyperLight Load® architecture	Enables PFM operation below ~100 mA while preserving <10 µs load-step response time - no compromise between low-I_Q and transient performance.
4 MHz constant-frequency PWM	Ensures predictable EMI profile above light-load threshold; simplifies filter design and avoids audible noise in sensitive audio or medical applications.
Internal 400 mV reference	Supports precise output setting from 1.0V to 5.0V using two external resistors; tolerance contributes ≤±2.5% total output error over full operating range.
Thermal shutdown with hysteresis	Triggers at 165°C with 20°C hysteresis (TSDHYS), preventing latch-up and enabling safe recovery after overload or poor heatsinking conditions.

Applications

MPU Power	Portable Instrumentation
Use Scenario: Powering low-voltage ARM Cortex-M4/M7 microprocessors in handheld multimeters and data loggers with battery-only operation. IC Role / Device Role / Timing Role: Primary step-down regulator delivering stable 1.2V/1.8V core and 3.3V I/O rails from single 3.7V Li-ion cell. Use Value: 20 µA quiescent current extends battery life beyond 12 months in sleep mode; 4 MHz switching minimizes output capacitor size for compact form factor.	Use Scenario: Supplying precision analog front-ends (ADC drivers, op-amps) and digital logic in portable gas analyzers and pH meters. IC Role / Device Role / Timing Role: Low-noise, high-PSRR power source with <10 mV p-p ripple ensuring <16-bit ADC accuracy and stable sensor biasing. Use Value: Internal inductor eliminates magnetic coupling into sensitive analog traces; HyperLight Load® prevents output droop during rapid sensor sampling bursts.
Wearable Devices	RF Modules
Use Scenario: Regulating power for Bluetooth LE and NFC transceivers in smartwatches and fitness trackers with strict size and thermal constraints. IC Role / Device Role / Timing Role: Compact, thermally efficient buck converter supplying 1.8V VDD_IO and 3.3V VDD_PA from shared coin-cell or rechargeable battery rail. Use Value: 3 mm × 3 mm HDFN package fits within 10 mm² PCB area budget; 60°C/W thermal resistance prevents skin-temperature rise above safety limits.	Use Scenario: Powering 2.4 GHz Wi-Fi/BLE modules in IoT edge nodes where RF sensitivity degrades with supply noise and thermal drift. IC Role / Device Role / Timing Role: Dedicated low-ripple, fast-transient regulator isolating RF circuitry from noisy digital subsystems. Use Value: 4 MHz switching places fundamental noise beyond 2nd harmonic of 2.4 GHz band; CFF compensation ensures <2 µs recovery from 10–90% load steps.

MPU Power

Portable Instrumentation

Use Scenario: Powering low-voltage ARM Cortex-M4/M7 microprocessors in handheld multimeters and data loggers with battery-only operation.

IC Role / Device Role / Timing Role: Primary step-down regulator delivering stable 1.2V/1.8V core and 3.3V I/O rails from single 3.7V Li-ion cell.

Use Value: 20 µA quiescent current extends battery life beyond 12 months in sleep mode; 4 MHz switching minimizes output capacitor size for compact form factor.

Use Scenario: Supplying precision analog front-ends (ADC drivers, op-amps) and digital logic in portable gas analyzers and pH meters.

IC Role / Device Role / Timing Role: Low-noise, high-PSRR power source with <10 mV p-p ripple ensuring <16-bit ADC accuracy and stable sensor biasing.

Use Value: Internal inductor eliminates magnetic coupling into sensitive analog traces; HyperLight Load® prevents output droop during rapid sensor sampling bursts.

Wearable Devices

RF Modules

Use Scenario: Regulating power for Bluetooth LE and NFC transceivers in smartwatches and fitness trackers with strict size and thermal constraints.

IC Role / Device Role / Timing Role: Compact, thermally efficient buck converter supplying 1.8V VDD_IO and 3.3V VDD_PA from shared coin-cell or rechargeable battery rail.

Use Value: 3 mm × 3 mm HDFN package fits within 10 mm² PCB area budget; 60°C/W thermal resistance prevents skin-temperature rise above safety limits.

Use Scenario: Powering 2.4 GHz Wi-Fi/BLE modules in IoT edge nodes where RF sensitivity degrades with supply noise and thermal drift.

IC Role / Device Role / Timing Role: Dedicated low-ripple, fast-transient regulator isolating RF circuitry from noisy digital subsystems.

Use Value: 4 MHz switching places fundamental noise beyond 2nd harmonic of 2.4 GHz band; CFF compensation ensures <2 µs recovery from 10–90% load steps.

Equivalent & Alternatives

The following parts are listed as comparable options for similar adjustable-output buck regulator applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
MIC33030-AYHL-T5	Same family, identical pinout and electrical specs, but rated for 300 mA output current instead of 600 mA.	Suitable only for sub-300 mA loads; cannot replace MIC33050-AYHL-T5 in designs requiring full 600 mA capability or higher thermal margin.	Select when system peak current is ≤250 mA and cost reduction is prioritized over headroom.
TI TPS62840DRLR	4 MHz buck with 1.8 µA I_Q, 1 A output, but requires external inductor and lacks integrated feed-forward (CFF) compensation.	Better ultra-low-I_Q for multi-year battery life, yet demands larger PCB area and more complex layout due to external magnetics and added compensation components.	Choose for longest battery runtime where board space is not limiting and design team has inductor selection expertise.

Compared with MIC33030-AYHL-T5, the MIC33050-AYHL-T5 delivers double the output current and superior thermal headroom in the same footprint; versus TPS62840DRLR, it trades slightly higher I_Q for guaranteed layout simplicity, lower EMI risk, and faster transient response without tuning.

Availability

MIC33050-AYHL-T5 is available at Aetrix Electronics and suitable for portable instrumentation, wearable devices, and RF modules requiring stable component supply, long-lifecycle support, and consistent parametric performance across production batches.

Supply support for MIC33050-AYHL-T5 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 U.S.-based semiconductor company specializing in microcontrollers, analog devices, and power management ICs, with global manufacturing and quality certifications including ISO 9001 and AEC-Q200 for select products.

The MIC33050 product line delivers fully integrated, high-efficiency buck power modules targeting space- and power-constrained applications such as wearables, portable medical devices, and industrial IoT endpoints where minimal external components and guaranteed thermal behavior are essential.

FAQ

What is the maximum output current capability of the MIC33050-AYHL-T5?

The MIC33050-AYHL-T5 is rated for continuous 600 mA output current under specified thermal conditions (T_J ≤ +125°C, θ_JA = 60°C/W). Its current limit in PWM mode is 0.65–1.7 A, allowing brief peak loads up to 1 A. Derating is required above +85°C ambient; full 600 mA is guaranteed only with adequate PCB copper pour on the ePAD and proper airflow.

Does the MIC33050-AYHL-T5 require an external inductor?

No, the MIC33050-AYHL-T5 integrates the power inductor internally within its 12-pin HDFN package. This eliminates the need for an external magnetic component, reduces PCB area by >30%, and removes inductor selection variables such as DCR, saturation current, and EMI shielding - all critical for compact wearable and portable designs.

How does the HyperLight Load® feature improve light-load efficiency in the MIC33050-AYHL-T5?

The HyperLight Load® architecture in the MIC33050-AYHL-T5 uses a minimum on/off-time control scheme that enables true pulse frequency modulation (PFM) at light loads while retaining fast transient response. Unlike conventional PFM schemes that sacrifice control speed for low I_Q, this design activates the error comparator on demand and uses an NMOS ideal rectifier, achieving >85% efficiency at 1 mA with <10 µs recovery from load steps.

What output voltage range can be set using the MIC33050-AYHL-T5 in adjustable mode?

In adjustable configuration, the MIC33050-AYHL-T5 supports output voltages from 1.0V to 5.0V, calculated using V_OUT = 0.4 V × (1 + R1/R2), where the internal 400 mV feedback reference (V_FB) sets the divider ratio. Output accuracy is ±2.5% over temperature and line, and the device maintains regulation down to 1 mA load with minimal dropout.

Is the MIC33050-AYHL-T5 RoHS compliant and lead-free?

Yes, the MIC33050-AYHL-T5 is Pb-free and RoHS compliant, as confirmed by Microchip's packaging specification DS20006120B. The 12-pin HDFN package carries the JEDEC matte tin (Sn) finish designation, and the "Y" in the part number suffix denotes –40°C to +125°C operation with full RoHS compliance per EU Directive 2011/65/EU.

MIC33050-AYHL-T5 Specifications

Product attributes: Attribute value

Manufacturer:: Microchip Technology

Series:: HyperLight Load®

Package/Case:: 12-VFDFN Exposed Pad, 12-MLF®

Packaging:: Tape & Reel (TR)

Product Status:: Active

Function:: Step-Down

Output Configuration:: Positive

Topology:: Buck

Output Type:: Adjustable

Number of Outputs:: 1

Voltage - Input (Min):: 2.7V

Voltage - Input (Max):: 5.5V

Voltage - Output (Min/Fixed):: 0.4V

Voltage - Output (Max):: 4.9V

Current - Output:: 600mA

Frequency - Switching:: 4MHz

Synchronous Rectifier:: Yes

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

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 12-MLF™ (3x3)

MIC33050-AYHL-T5 FAQ

1.How can I place an order for MIC33050-AYHL-T5 through Aetrix?

Please submit a Request for Quotation (RFQ) for MIC33050-AYHL-T5 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 MIC33050-AYHL-T5 reliable?

The price and inventory of MIC33050-AYHL-T5 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MIC33050-AYHL-T5 is usually 5 days.

3.What payment methods are accepted for MIC33050-AYHL-T5?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MIC33050-AYHL-T5 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for MIC33050-AYHL-T5?

MIC33050-AYHL-T5 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your MIC33050-AYHL-T5 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 MIC33050-AYHL-T5?

For technical support, including MIC33050-AYHL-T5 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MIC33050-AYHL-T5 requirements.

6.How does Aetrix verify that MIC33050-AYHL-T5 is sourced from the original manufacturer or authorized distributors?

All MIC33050-AYHL-T5 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 MIC33050-AYHL-T5 meets industry standards.

7.What is the process for return or replacement of MIC33050-AYHL-T5?

All MIC33050-AYHL-T5 units undergo pre-shipment inspection (PSI). If there is an issue with MIC33050-AYHL-T5, 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 MIC33050-AYHL-T5 part is unused and in its original packaging.

Return procedure for MIC33050-AYHL-T5:

1.Submit a request within 90 days.

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

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