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

Microchip Technology MIC23051-CGYML-TR

Name: MIC23051-CGYML-TR
Brand: Microchip Technology
SKU: MIC23051-CGYML-TR
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: MIC23051-CGYML-TR

Manufacturer:: Microchip Technology

Category:: Voltage Regulators - DC DC Switching Regulators

Package:: 8-VFDFN Exposed Pad, 8-MLF®

Datasheet:: MIC23051-CGYML-TR.pdf

Description:: IC REG BUCK 1.8V 600MA 8MLF

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Product details

Overview

MIC23051-CGYML-TR from Microchip Technology is a 4 MHz synchronous buck (step-down) DC-DC regulator with HyperLight Load® architecture, delivering up to 600 mA output current at fixed 1.0 V (VSC low) or 1.8 V (VSC high) outputs. It operates from 2.7 V to 5.5 V input, achieves >93% peak efficiency and 25 mV_PP ripple in HyperLight Load® mode, and targets space-constrained portable power rails such as USB-powered Wi-Fi modules.

For engineers reviewing the MIC23051-CGYML-TR datasheet, MIC23051-CGYML-TR pinout, MIC23051-CGYML-TR application, or MIC23051-CGYML-TR equivalent, key selection criteria include its dual-voltage scaling capability via VSC pin, ultra-low 20 µA quiescent current in light-load operation, 2 mm × 2 mm DFN package with exposed pad, and compatibility with 0.47 µH–2.2 µH inductors for sub-1 mm height designs.

Technical Context

The MIC23051-CGYML-TR implements a proprietary HyperLight Load® control scheme combining minimum on-time/off-time PFM at light loads and fixed 4 MHz CCM PWM at higher loads-enabling best-in-class transient response without sacrificing light-load efficiency. Its dual-output voltage scaling is implemented via a dedicated VSC input pin that toggles between 1.0 V and 1.8 V nominal outputs with 20 mV hysteresis and 800 µs transition time.

This regulator integrates PMOS/NMOS synchronous switches with R_DS(ON) of 0.45 Ω (PMOS) and 0.5 Ω (NMOS), uses a feed-forward capacitor (CFF = 560 pF) connected to the SNS pin for fast loop response, and features independent AGND/PGND pins plus an exposed thermal pad for thermal management across –40°C to +125°C junction temperature range.

Key Specifications

Parameter	Value and Actual Design Meaning
Input Voltage Range	2.7 V to 5.5 V - supports single-cell Li-ion, USB 3.3 V, and 5 V bus rails without external LDO pre-regulation.
Output Current	600 mA max - sufficient for powering RF transceivers, microcontroller cores, or memory subsystems in portable devices.
Output Voltage Options	1.0 V (VSC low) / 1.8 V (VSC high) - enables dynamic core voltage scaling for power-aware SoC operation.
Quiescent Current	20 µA typical - extends battery life in standby modes of cellular phones and wireless LAN cards.
Switching Frequency	4 MHz fixed in CCM - allows use of ultra-small 0.47 µH–2.2 µH inductors and minimizes EMI filtering requirements.
Output Ripple	25 mV_PP in HyperLight Load® mode - meets noise-sensitive analog supply requirements without large bulk capacitance.
Efficiency	>93% peak, ~85% at 1 mA - maintains high conversion efficiency across full load range from micropower to full-load operation.

Pinout & Package

Package: 8-pin 2 mm × 2 mm DFN with exposed thermal pad (EP), RoHS-compliant, rated for –40°C to +125°C junction temperature.

Pin/Terminal	Circuit Role	Design Meaning
1 SW	Switch node output	Connects directly to inductor; carries high-frequency switching current; requires short, low-inductance routing away from sensitive nodes.
2 EN	Enable input	Logic-high active enable with 0.5–1.2 V threshold and 35 mV hysteresis; internal soft-start prevents output overshoot during power-up.
3 VSC	Voltage scaling control	Digital input selecting 1.0 V (low) or 1.8 V (high) output; 20 mV hysteresis prevents chatter; must not be left floating.
4 SNS	Output voltage sense	Direct connection to VOUT; feeds error amplifier; routed away from SW to avoid noise coupling into regulation loop.
5 CFF	Feed-forward capacitor node	Connects to SNS via 560 pF capacitor; provides high-frequency path to improve transient response and stability.
6 AGND	Analog ground reference	Ground return for bias and control circuitry; must be separated from PGND to prevent noise injection into feedback path.
7 VIN	Main power input	Supplies both power stage and analog circuitry; requires ≥2.2 µF ceramic bypass capacitor placed close to VIN and PGND.
8 PGND	Power ground return	High-current return path for MOSFET switching; forms tight loop with SW and VIN to minimize EMI and voltage spikes.

Key Features

Feature	Design Value
HyperLight Load® architecture	Enables PFM operation at light loads while maintaining 4 MHz CCM at full load-eliminating efficiency vs. speed trade-off common in traditional light-load schemes.
Voltage scaling via VSC pin	Hardware-selectable dual output (1.0 V / 1.8 V) with <800 µs transition time-supports dynamic voltage scaling for power-gated processor domains.
Ultra-low quiescent current	20 µA typical in active regulation mode-reduces standby power loss in always-on subsystems like Bluetooth LE or sensor hubs.
Integrated synchronous MOSFETs	0.45 Ω PMOS / 0.5 Ω NMOS R_DS(ON)-minimizes conduction losses and eliminates need for external diode or gate drivers.
Stability with small external components	Guaranteed stable with 0.47 µH–2.2 µH inductors and ≥2.2 µF X5R/X7R ceramic output capacitor-enabling compact, low-profile PCB layouts.

Applications

Cellular Phones	Digital Cameras
Use Scenario: Powering baseband processor I/O banks and RF front-end ICs requiring dynamically scalable voltage rails. IC Role / Device Role / Timing Role: Primary step-down regulator providing 1.0 V (low-power mode) or 1.8 V (active transmission) to modem subsystems. Use Value: Dual-voltage scaling reduces average power consumption by 35–40% during intermittent data bursts versus fixed-output alternatives.	Use Scenario: Supplying image signal processor (ISP) core and memory interface in compact camera modules. IC Role / Device Role / Timing Role: High-efficiency buck converter delivering regulated 1.8 V for digital logic and 1.0 V for low-power standby states. Use Value: 25 mV_PP ripple in HyperLight Load® mode prevents noise coupling into analog imaging chain, preserving SNR.
Wireless LAN Cards	USB Powered Devices
Use Scenario: Providing clean, efficient power to 802.11ac Wi-Fi chipsets operating from 5 V USB input. IC Role / Device Role / Timing Role: Input-to-core regulator converting 5 V USB to 1.8 V WLAN PHY and 1.0 V MAC logic rails. Use Value: 4 MHz switching frequency allows use of tiny 0.47 µH inductors-reducing solution height to <1 mm for M.2 and mini-PCIe form factors.	Use Scenario: Powering portable USB peripherals (e.g., flash drives, HID devices) with strict inrush and standby current limits. IC Role / Device Role / Timing Role: Micropower buck regulator enabling USB suspend/resume compliance with <4 µA shutdown current. Use Value: 0.01 µA typical shutdown current ensures zero-load battery drain over weeks of storage-critical for consumer accessories.

Cellular Phones

Digital Cameras

Use Scenario: Powering baseband processor I/O banks and RF front-end ICs requiring dynamically scalable voltage rails.

IC Role / Device Role / Timing Role: Primary step-down regulator providing 1.0 V (low-power mode) or 1.8 V (active transmission) to modem subsystems.

Use Value: Dual-voltage scaling reduces average power consumption by 35–40% during intermittent data bursts versus fixed-output alternatives.

Use Scenario: Supplying image signal processor (ISP) core and memory interface in compact camera modules.

IC Role / Device Role / Timing Role: High-efficiency buck converter delivering regulated 1.8 V for digital logic and 1.0 V for low-power standby states.

Use Value: 25 mV_PP ripple in HyperLight Load® mode prevents noise coupling into analog imaging chain, preserving SNR.

Wireless LAN Cards

USB Powered Devices

Use Scenario: Providing clean, efficient power to 802.11ac Wi-Fi chipsets operating from 5 V USB input.

IC Role / Device Role / Timing Role: Input-to-core regulator converting 5 V USB to 1.8 V WLAN PHY and 1.0 V MAC logic rails.

Use Value: 4 MHz switching frequency allows use of tiny 0.47 µH inductors-reducing solution height to <1 mm for M.2 and mini-PCIe form factors.

Use Scenario: Powering portable USB peripherals (e.g., flash drives, HID devices) with strict inrush and standby current limits.

IC Role / Device Role / Timing Role: Micropower buck regulator enabling USB suspend/resume compliance with <4 µA shutdown current.

Use Value: 0.01 µA typical shutdown current ensures zero-load battery drain over weeks of storage-critical for consumer accessories.

Equivalent & Alternatives

The following parts are listed as comparable options for similar synchronous buck regulator applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
MIC23050-CGYML-TR	Same package and pinout; lacks VSC pin and voltage scaling-fixed 1.0 V or 1.8 V output only.	No dynamic voltage adjustment; suitable only for static-rail applications like memory I/O.	Select when dual-voltage control is unnecessary and BOM simplification is prioritized over flexibility.
TPS62231DRYR	3 MHz switching, 0.6 V–3.3 V adjustable output via resistor divider; no integrated VSC function; 1.2 µA quiescent current in PFM mode.	Requires external feedback resistors; supports wider output range but adds component count and layout complexity.	Choose when programmable output voltage is required and board area permits external resistors and larger inductor.

Compared with MIC23051-CGYML-TR, MIC23050-CGYML-TR sacrifices voltage scalability for lower cost and identical footprint, while TPS62231DRYR trades integrated VSC functionality for broader output adjustability-making MIC23051-CGYML-TR optimal for space-constrained, dual-rail portable systems needing hardware-controlled voltage transitions.

Availability

MIC23051-CGYML-TR is available at Aetrix Electronics and suitable for cellular phones, wireless LAN cards, and USB-powered devices requiring stable component supply with guaranteed long-term manufacturability and consistent electrical performance.

Supply support for MIC23051-CGYML-TR 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 design, manufacturing, and support infrastructure.

The MIC23051 product line delivers high-frequency, high-efficiency synchronous buck regulators optimized for portable and battery-powered applications where size, light-load efficiency, and dynamic voltage control are critical system requirements.

FAQ

What is the exact output voltage configuration of the MIC23051-CGYML-TR?

The MIC23051-CGYML-TR is factory-configured for dual-output voltage scaling: 1.0 V when the VSC pin is logic low, and 1.8 V when VSC is logic high. This pairing is confirmed in Microchip's Product Identification System (DS20006471A-page 17) and Table 5-1, where "CG" denotes 1.0 V / 1.8 V scaling. The device does not support other voltage combinations without reconfiguration or alternate part numbers.

Does the MIC23051-CGYML-TR require external feedback resistors?

No, the MIC23051-CGYML-TR does not require external feedback resistors. It is a fixed-output regulator with internally trimmed voltage references for both 1.0 V and 1.8 V levels. Feedback is implemented via direct SNS pin connection to VOUT and the CFF pin with a 560 pF feed-forward capacitor-eliminating resistor networks and associated tolerance errors.

What is the recommended inductor value for the MIC23051-CGYML-TR in a typical 1.8 V output application?

Microchip recommends a 1 µH inductor for the MIC23051-CGYML-TR in typical 1.8 V applications, as it balances transient response, efficiency, and output ripple (DS20006471A-page 10). The device supports 0.47 µH–2.2 µH inductors; 0.47 µH improves transient speed, while 2.2 µH reduces ripple. All values must be rated for ≥2 A saturation current per Equation 4-1.

How does the MIC23051-CGYML-TR achieve ultra-low quiescent current without compromising transient response?

The MIC23051-CGYML-TR achieves 20 µA typical quiescent current using HyperLight Load® architecture-a proprietary control scheme that employs minimum on-time/off-time PFM at light loads. Unlike conventional schemes that sacrifice control bandwidth for low IQ, this method retains fast error comparator response and uses the NMOS as an ideal rectifier, enabling rapid load-step recovery with only a small output capacitor.

Is the MIC23051-CGYML-TR compatible with ceramic output capacitors smaller than 4.7 µF?

Yes, the MIC23051-CGYML-TR is designed to be stable with ≥2.2 µF ceramic output capacitors (X5R/X7R dielectric), as stated in Section 4.4 of DS20006471A. While the typical application circuit uses 4.7 µF, Microchip confirms stability down to 2.2 µF-enabling smaller footprints and lower profile solutions without compromising loop stability or transient performance.

MIC23051-CGYML-TR Specifications

Product attributes: Attribute value

Manufacturer:: Microchip Technology

Series:: HyperLight Load®

Package/Case:: 8-VFDFN Exposed Pad, 8-MLF®

Packaging:: Tape & Reel (TR)

Product Status:: Active

Function:: Step-Down

Output Configuration:: Positive

Topology:: Buck

Output Type:: Fixed

Number of Outputs:: 1

Voltage - Input (Min):: 2.7V

Voltage - Input (Max):: 5.5V

Voltage - Output (Min/Fixed):: 1.8V

Voltage - Output (Max):: -

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:: 8-MLF® (2x2)

MIC23051-CGYML-TR FAQ

1.How can I place an order for MIC23051-CGYML-TR through Aetrix?

Please submit a Request for Quotation (RFQ) for MIC23051-CGYML-TR 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 MIC23051-CGYML-TR reliable?

The price and inventory of MIC23051-CGYML-TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MIC23051-CGYML-TR is usually 5 days.

3.What payment methods are accepted for MIC23051-CGYML-TR?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MIC23051-CGYML-TR transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for MIC23051-CGYML-TR?

MIC23051-CGYML-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your MIC23051-CGYML-TR 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 MIC23051-CGYML-TR?

For technical support, including MIC23051-CGYML-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MIC23051-CGYML-TR requirements.

6.How does Aetrix verify that MIC23051-CGYML-TR is sourced from the original manufacturer or authorized distributors?

All MIC23051-CGYML-TR 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 MIC23051-CGYML-TR meets industry standards.

7.What is the process for return or replacement of MIC23051-CGYML-TR?

All MIC23051-CGYML-TR units undergo pre-shipment inspection (PSI). If there is an issue with MIC23051-CGYML-TR, 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 MIC23051-CGYML-TR part is unused and in its original packaging.

Return procedure for MIC23051-CGYML-TR:

1.Submit a request within 90 days.

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

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