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

Microchip Technology MIC23031-CYMT-TR

Name: MIC23031-CYMT-TR
Brand: Microchip Technology
SKU: MIC23031-CYMT-TR
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: MIC23031-CYMT-TR

Manufacturer:: Microchip Technology

Category:: Voltage Regulators - DC DC Switching Regulators

Package:: 6-UFDFN Exposed Pad, 6-TMLF®

Datasheet:: MIC23031-CYMT-TR.pdf

Description:: IC REG BUCK 1V 400MA 6TMLF

Quantity:: RFQ Add To RFQ list

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Product details

Overview

MIC23031-CYMT-TR from Microchip Technology is a fixed 1.0 V, 400 mA synchronous buck regulator with HyperLight Load® mode, operating from 2.7V to 5.5V input and delivering up to 93% efficiency at full load. It features 4 MHz PWM switching, 21 µA quiescent current, and ultra-low 20 mV_PP output ripple in light-load mode-designed for powering processor cores in space-constrained portable electronics.

For engineers reviewing the MIC23031-CYMT-TR datasheet, MIC23031-CYMT-TR pinout, MIC23031-CYMT-TR application, or MIC23031-CYMT-TR equivalent, key selection considerations include its 1.0 V fixed output, 1.6 mm × 1.6 mm TDFN-6 package, –40°C to +125°C junction temperature range, HyperLight Load® transient response, and compatibility with sub-1 mm height designs using 0.47 µH inductors and 2.2 µF ceramic capacitors.

Technical Context

The MIC23031-CYMT-TR implements a proprietary HyperLight Load® control architecture combining minimum on/off-time PFM at light loads and fixed-frequency 4 MHz PWM above ~4–70 mA (inductor-dependent), enabling seamless mode transition without audible noise or regulation loss. Its dual-MOSFET synchronous topology uses a 0.65 Ω PMOS high-side and 0.8 Ω NMOS low-side switch, with integrated soft-start and undervoltage lockout (2.55 V typical).

It employs a dedicated SNS pin for output voltage sensing near the capacitor, separate AGND and PGND paths for noise isolation, and a logic-level EN pin with 0.9 V typical threshold and 0.01 µA shutdown current-ensuring stable core rail generation under dynamic load conditions typical of mobile SoCs and RF modules.

Key Specifications

Parameter	Value and Actual Design Meaning
Input Voltage Range	2.7 V to 5.5 V - supports single-cell Li-ion, USB 5 V, and regulated 3.3 V rails without external LDO pre-regulation.
Output Voltage	Fixed 1.0 V ±2.5% - precision core supply for low-voltage processors, FPGAs, and ASICs requiring tight DC accuracy.
Max Output Current	400 mA - sufficient for mid-tier application processors, Wi-Fi/BT SoCs, and sensor hubs in portable devices.
Switching Frequency	4 MHz nominal - enables use of ultra-small 0.47 µH inductors and compact 0603/0402 ceramic capacitors, minimizing solution footprint.
Quiescent Current	21 µA typical - extends battery life in always-on subsystems such as real-time clocks or wake-on-RF circuits.
Shutdown Current	0.01 µA - ensures negligible drain during deep sleep or system off states, critical for multi-week standby operation.
Output Ripple	20 mV_PP (HyperLight Load®), 3 mV (PWM) - maintains clean power for noise-sensitive analog blocks and PLLs without large bulk capacitance.
Junction Temp Range	–40°C to +125°C - qualified for automotive infotainment, industrial handhelds, and extended-temperature embedded systems.

Pinout & Package

Package: 6-lead 1.6 mm × 1.6 mm TDFN (MT) with exposed thermal pad (ePAD), rated θ_JA = 92.4°C/W. Pin 1 marked by dot/delta; ePAD must be soldered to PGND for thermal and electrical performance.

Pin/Terminal	Circuit Role	Design Meaning
VIN (Pin 1)	Input Power Supply	Accepts 2.7–5.5 V; requires ≥2.2 µF ceramic bypass capacitor placed adjacent to PGND to suppress high-frequency switching noise.
SW (Pin 2)	Power Switch Node	Drives external inductor; high dv/dt node-must be routed short and away from sensitive analog traces to avoid coupling.
SNS (Pin 3)	Output Voltage Sense	Direct connection to VOUT near output capacitor; enables accurate regulation independent of PCB trace resistance.
EN (Pin 4)	Enable Control Input	Logic-high (>0.9 V) enables regulation; logic-low (<0.5 V) disables output and reduces I_Q to 0.01 µA; must not float.
AGND (Pin 5)	Analog Ground Reference	Reference ground for internal error amplifier and feedback circuitry; connects to central star ground point, separate from PGND loop.
PGND (Pin 6)	Power Ground Return	High-current return path for MOSFETs and inductor; requires low-inductance connection to C_IN/C_OUT grounds to minimize switching noise.

Key Features

Feature	Design Value
HyperLight Load® Mode	Enables PFM operation below ~4–70 mA (inductor-dependent), maintaining >88% efficiency at 1 mA while delivering ultra-fast load transient response (<10 µs).
Ultra-Low Output Ripple	20 mV_PP in light-load mode and only 3 mV in full PWM-reduces need for additional LC filtering and supports noise-critical RF/analog circuits.
Minimal External Components	Requires only one inductor (0.47–4.7 µH), two ceramic capacitors (≥2.2 µF each), and no compensation network-enabling <15 mm² total solution size.
Sub-1 mm Height Design	Compatible with 0.47 µH inductors as low as 0.5 mm height and 2.2 µF 0603 capacitors-ideal for ultra-thin wearables and slim mobile accessories.
Robust Protection Set	Includes undervoltage lockout (2.55 V typ), overtemperature shutdown (160°C), and cycle-by-cycle current limit (0.7 A typ)-ensures safe operation under fault conditions.

Applications

Mobile Handsets	Portable Navigation Devices (GPS)
Use Scenario: Powering application processor core and memory I/O rails in LTE/5G smartphones with dynamic DVFS scaling. IC Role / Device Role / Timing Role: Primary 1.0 V core regulator delivering fast transient response to match CPU burst activity and sleep transitions. Use Value: HyperLight Load® sustains >88% efficiency at 1 mA idle current, extending talk time; 4 MHz switching avoids AM radio band interference.	Use Scenario: Supplying GNSS baseband processor and RF front-end in handheld GPS units operating from single-cell Li-ion. IC Role / Device Role / Timing Role: Fixed 1.0 V rail generator with low noise and minimal ripple to preserve GPS signal integrity and timing accuracy. Use Value: 3 mV output ripple in PWM mode prevents phase noise degradation in local oscillators; 1.6 mm × 1.6 mm footprint saves board area for antenna clearance.
Wi-Fi/WiMax Modules	Digital Cameras
Use Scenario: Providing stable 1.0 V supply to WLAN/BT combo chips in IoT gateways and wireless access points. IC Role / Device Role / Timing Role: High-efficiency DC/DC converter supporting burst-mode packet transmission and low-power listen states. Use Value: 21 µA quiescent current minimizes standby drain; 0.01 µA shutdown enables host-controlled power gating for compliance with energy standards.	Use Scenario: Powering image signal processor (ISP) and CMOS sensor interface in compact action cameras and drones. IC Role / Device Role / Timing Role: Core voltage regulator with fast load step recovery to prevent frame drop during auto-exposure or autofocus events. Use Value: Ultra-fast transient response (<10 µs) eliminates voltage sag during ISP clock bursts; TDFN package fits within tight camera module height constraints.

Mobile Handsets

Portable Navigation Devices (GPS)

Use Scenario: Powering application processor core and memory I/O rails in LTE/5G smartphones with dynamic DVFS scaling.

IC Role / Device Role / Timing Role: Primary 1.0 V core regulator delivering fast transient response to match CPU burst activity and sleep transitions.

Use Value: HyperLight Load® sustains >88% efficiency at 1 mA idle current, extending talk time; 4 MHz switching avoids AM radio band interference.

Use Scenario: Supplying GNSS baseband processor and RF front-end in handheld GPS units operating from single-cell Li-ion.

IC Role / Device Role / Timing Role: Fixed 1.0 V rail generator with low noise and minimal ripple to preserve GPS signal integrity and timing accuracy.

Use Value: 3 mV output ripple in PWM mode prevents phase noise degradation in local oscillators; 1.6 mm × 1.6 mm footprint saves board area for antenna clearance.

Wi-Fi/WiMax Modules

Digital Cameras

Use Scenario: Providing stable 1.0 V supply to WLAN/BT combo chips in IoT gateways and wireless access points.

IC Role / Device Role / Timing Role: High-efficiency DC/DC converter supporting burst-mode packet transmission and low-power listen states.

Use Value: 21 µA quiescent current minimizes standby drain; 0.01 µA shutdown enables host-controlled power gating for compliance with energy standards.

Use Scenario: Powering image signal processor (ISP) and CMOS sensor interface in compact action cameras and drones.

IC Role / Device Role / Timing Role: Core voltage regulator with fast load step recovery to prevent frame drop during auto-exposure or autofocus events.

Use Value: Ultra-fast transient response (<10 µs) eliminates voltage sag during ISP clock bursts; TDFN package fits within tight camera module height constraints.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
MIC23051-CYMT-TR	Same 1.0 V fixed output, but adds integrated soft-start timer and improved light-load efficiency (89% at 1 mA); identical 1.6 mm × 1.6 mm TDFN-6 package.	Preferred where tighter output voltage monotonicity during startup is required, e.g., FPGA configuration sequences.	Select MIC23051-CYMT-TR if soft-start timing control is critical; otherwise MIC23031-CYMT-TR offers proven cost/performance balance.
TPS62231DRYR	1.0 V fixed output, 400 mA, 4 MHz, but uses different control architecture (D-CAP2); 1.5 mm × 1.5 mm DSBGA-6 package; higher IQ (25 µA typ).	Better suited for designs already using TI ecosystem tools and layout practices; slightly smaller footprint but less thermal margin (θ_JA ≈ 120°C/W).	Choose TPS62231DRYR when leveraging TI's WEBENCH or existing DSBGA routing; MIC23031-CYMT-TR provides superior thermal performance and lower IQ.

Compared with MIC23051-CYMT-TR, the MIC23031-CYMT-TR lacks programmable soft-start but delivers identical regulation accuracy and ripple performance at lower BOM cost; versus TPS62231DRYR, it offers 2.4°C/W lower θ_JA and 4 µA lower quiescent current-critical for thermally constrained or battery-limited designs.

Availability

MIC23031-CYMT-TR is available at Aetrix Electronics and suitable for mobile handsets, portable navigation devices, Wi-Fi modules, and digital cameras requiring stable component supply across production lifecycles.

Supply support for MIC23031-CYMT-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 leading provider of microcontrollers, analog, FPGA, and power management ICs, serving automotive, industrial, communications, and consumer markets with vertically integrated silicon and software solutions.

The MIC23031 product line delivers ultra-compact, high-efficiency buck regulators optimized for battery-powered portable electronics-specifically targeting core voltage regulation in space- and power-constrained SoC applications.

FAQ

What is the output voltage tolerance of the MIC23031-CYMT-TR?

The MIC23031-CYMT-TR has a fixed 1.0 V output with ±2.5% accuracy over temperature, line, and load conditions (VIN = 3.6 V, ILOAD = 20 mA). This specification ensures reliable core rail operation for modern low-voltage processors without requiring external trimming or calibration-making MIC23031-CYMT-TR suitable for high-volume portable device manufacturing where yield and test time matter.

Does the MIC23031-CYMT-TR require an external feedback resistor network?

No, the MIC23031-CYMT-TR is a fixed-output variant (1.0 V) and does not require external feedback resistors. Unlike adjustable versions such as MIC23031-AYMT-TR, the MIC23031-CYMT-TR integrates the voltage divider internally-simplifying design, reducing BOM count, and eliminating resistor tolerance errors. This makes MIC23031-CYMT-TR ideal for cost-sensitive, space-constrained applications where output voltage is predetermined.

What is the recommended inductor value for the MIC23031-CYMT-TR in a typical 1.0 V application?

Microchip recommends a 1.0 µH inductor for balanced performance across efficiency, transient response, and output ripple in MIC23031-CYMT-TR designs. However, the device supports 0.47 µH to 4.7 µH-selecting 0.47 µH improves transient response for burst-mode loads, while 4.7 µH lowers ripple and EMI. All values maintain stability with ≥2.2 µF X5R/X7R ceramic output capacitors-enabling flexible optimization of MIC23031-CYMT-TR for specific end-equipment requirements.

How does the HyperLight Load® mode affect efficiency at light loads for the MIC23031-CYMT-TR?

HyperLight Load® mode enables the MIC23031-CYMT-TR to achieve up to 88% efficiency at 1 mA output current-significantly higher than conventional PWM-only regulators. By switching to pulse-frequency modulation (PFM) at light loads, MIC23031-CYMT-TR minimizes switching losses and gate drive current, sustaining high conversion efficiency across the full 0–400 mA range without compromising transient performance or output accuracy.

Can the MIC23031-CYMT-TR be used with input voltages below 2.7 V?

No-the MIC23031-CYMT-TR has a specified minimum input voltage of 2.7 V due to its internal UVLO threshold (2.45–2.65 V). Operation below 2.7 V risks erratic regulation or complete shutdown. For sub-2.7 V inputs, consider alternative regulators such as Microchip's MIC24045 or external boost-buck architectures. Always verify VIN裕度 against worst-case battery discharge curves when designing with MIC23031-CYMT-TR.

MIC23031-CYMT-TR Specifications

Product attributes: Attribute value

Manufacturer:: Microchip Technology

Series:: HyperLight Load®

Package/Case:: 6-UFDFN Exposed Pad, 6-TMLF®

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):: 1V

Voltage - Output (Max):: -

Current - Output:: 400mA

Frequency - Switching:: 4MHz

Synchronous Rectifier:: Yes

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

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 6-TMLF® (1.6x1.6)

MIC23031-CYMT-TR FAQ

1.How can I place an order for MIC23031-CYMT-TR through Aetrix?

Please submit a Request for Quotation (RFQ) for MIC23031-CYMT-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 MIC23031-CYMT-TR reliable?

The price and inventory of MIC23031-CYMT-TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MIC23031-CYMT-TR is usually 5 days.

3.What payment methods are accepted for MIC23031-CYMT-TR?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MIC23031-CYMT-TR transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for MIC23031-CYMT-TR?

MIC23031-CYMT-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your MIC23031-CYMT-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 MIC23031-CYMT-TR?

For technical support, including MIC23031-CYMT-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MIC23031-CYMT-TR requirements.

6.How does Aetrix verify that MIC23031-CYMT-TR is sourced from the original manufacturer or authorized distributors?

All MIC23031-CYMT-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 MIC23031-CYMT-TR meets industry standards.

7.What is the process for return or replacement of MIC23031-CYMT-TR?

All MIC23031-CYMT-TR units undergo pre-shipment inspection (PSI). If there is an issue with MIC23031-CYMT-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 MIC23031-CYMT-TR part is unused and in its original packaging.

Return procedure for MIC23031-CYMT-TR:

1.Submit a request within 90 days.

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

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