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Microchip Technology MIC23254-GCYMT-TR
- Part No.:
- MIC23254-GCYMT-TR
- Manufacturer:
- Microchip Technology
- Package:
- 10-UFDFN, 10-TMLF®
- Datasheet:
-
MIC23254-GCYMT-TR.pdf
- Description:
- IC REG BCK 1/1.8V 0.4A DL 10TMLF
- Quantity:
- Payment:
- Shipping:
Inventory:3,344
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Product details
Overview
MIC23254-GCYMT-TR from Micrel is a dual-channel synchronous buck regulator IC delivering 400mA per output at fixed 1.0V and 1.8V, operating from 2.5V–5.5V input with HyperLight Load™ mode, 4MHz PWM switching, and 33µA quiescent current-designed for powering processor cores in space-constrained portable electronics.
For engineers reviewing the MIC23254-GCYMT-TR datasheet, MIC23254-GCYMT-TR pinout, MIC23254-GCYMT-TR application, or MIC23254-GCYMT-TR equivalent, key selection considerations include dual-output voltage tracking, ultra-low light-load efficiency (85% @ 1mA), 2mm × 2mm Thin MLF® package thermal performance (θJA = 70°C/W), and HyperLight Load™ transient response for battery-powered SoC rails.
Technical Context
The MIC23254-GCYMT-TR integrates two independent synchronous buck converters sharing a common control architecture with proprietary HyperLight Load™ PFM/PWM hybrid modulation. Each channel uses internal PMOS/NMOS power switches with typical RDS(on) of 0.6Ω (PMOS) and 0.8Ω (NMOS), enabling high-efficiency operation across 0.1mA–400mA load range.
It features separate enable inputs (EN1/EN2), dedicated sense pins (SNS1/SNS2) for remote feedback, and split ground paths (PGND/AGND) to isolate high-current switching noise from analog control circuitry-supporting stable regulation under fast load transients while maintaining <3mVpp ripple in full PWM mode.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.5V to 5.5V - supports single-cell Li-ion down to end-of-discharge and USB 5V supply without external LDO pre-regulation. |
| Output Current per Channel | 400mA - sufficient to power ARM Cortex-A/M cores or FPGA I/O banks with margin for peak burst loads. |
| Switching Frequency | 4MHz nominal - enables use of compact 1µH inductors and sub-1mm solution height with 4.7µF ceramic output capacitors. |
| Quiescent Current | 33µA (both outputs enabled) - extends battery runtime in always-on sensor or standby subsystems. |
| Output Voltage Accuracy | ±2.5% - ensures reliable logic-level compliance for 1.0V core and 1.8V I/O rails across temperature and line/load variation. |
| Shutdown Current | 0.01µA - minimizes leakage during deep sleep modes in mobile devices. |
| Operating Junction Temp | –40°C to +125°C - qualified for automotive infotainment and industrial handheld environments. |
Pinout & Package
Package: 10-pin 2mm × 2mm Thin MLF® (MT), Pb-free, NiPdAu lead finish, halogen-free mold compound.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SNS1 | Sense Input 1 | Connects directly to VOUT1 near output capacitor to reject PCB trace resistance error and maintain ±2.5% regulation accuracy. |
| EN1 | Enable Input 1 | Logic-high (>0.9V) activates Channel 1; must be actively driven-floating causes undefined behavior. |
| AGND | Analog Ground | Reference for internal error amplifier and soft-start; requires low-impedance connection to PGND at single point only. |
| SW1 | Switch Node 1 | Drives high-side PMOS and low-side NMOS; routes to inductor L1 with minimal loop area to reduce EMI. |
| PGND | Power Ground | Return path for high-current switching loops; must be solid copper pour beneath IC with multiple vias to inner ground plane. |
| VIN | Main Power Input | Supplies both power MOSFETs; requires ≥2.2µF ceramic bypass capacitor placed within 2mm of pin and PGND. |
| SW2 | Switch Node 2 | Drives Channel 2 power stage; routed separately from SW1 to prevent cross-coupling during simultaneous switching. |
| AVIN | Analog Supply Input | Bias source for control circuitry; tied externally to VIN but decoupled with 0.01µF capacitor to suppress switching noise. |
| EN2 | Enable Input 2 | Independent logic control for Channel 2; allows staggered startup or dynamic rail sequencing. |
| SNS2 | Sense Input 2 | Provides precision feedback for VOUT2; layout identical to SNS1-shortest possible trace to output capacitor pad. |
Key Features
| Feature | Design Value |
|---|---|
| HyperLight Load™ Mode | Proprietary PFM control reduces switching frequency at light loads, achieving 85% efficiency at 1mA while maintaining <20mVpp output ripple. |
| Dual Independent Enables | EN1 and EN2 allow independent power-up sequencing, dynamic rail disable, or fault isolation without affecting the other channel. |
| Ultra-Fast Transient Response | Sub-10µs recovery from 50% load step due to adaptive minimum on/off time control and integrated error amplifier bandwidth. |
| Low Output Ripple | 3mVpp in PWM mode and 20mVpp in HyperLight Load™ mode-enables clean power for RF-sensitive circuits without additional LC filtering. |
| Thermal Robustness | θJA = 70°C/W with standard 2-layer PCB and 25mm² ground plane-supports continuous 400mA/channel operation at +50°C ambient. |
Applications
| Mobile Handsets | Portable Media Players |
|---|---|
Use Scenario: Dual-rail power for application processor (1.0V core) and memory interface (1.8V I/O) in slim smartphone designs. IC Role / Device Role / Timing Role: Primary DC-DC converter supplying regulated core and I/O voltages with dynamic enable control during CPU sleep/wake cycles. Use Value: 33µA quiescent current extends standby time; 4MHz switching allows 1µH inductors that fit within 2.5mm board height constraints. | Use Scenario: Compact power solution for audio SoC and display driver in battery-operated MP3/video players. IC Role / Device Role / Timing Role: Dual-output buck regulator delivering stable 1.0V and 1.8V rails with fast transient response to handle burst-mode audio decoding. Use Value: HyperLight Load™ maintains >80% efficiency at playback idle current (<10mA), maximizing battery life between charges. |
| GPS Navigation Devices | USB-Powered Peripherals |
Use Scenario: Power management for GPS baseband processor and RF front-end in handheld navigation units. IC Role / Device Role / Timing Role: Core voltage regulator with tight output accuracy (±2.5%) and low noise to ensure GNSS signal integrity and timing stability. Use Value: <3mVpp ripple in PWM mode prevents phase noise degradation in GPS L1-band receivers; –40°C to +125°C rating supports outdoor operation. | Use Scenario: Single-chip power solution for USB-powered Bluetooth headsets, dongles, or HID devices drawing <400mA total. IC Role / Device Role / Timing Role: Efficient conversion from 5V USB bus to dual low-voltage rails, with shutdown current <0.01µA to meet USB suspend requirements. Use Value: Eliminates need for discrete regulators and external FETs-reduces BOM count by 6 components versus discrete buck solutions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-output buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS62400DRVR | Fixed 1.2V/1.8V outputs; 3MHz switching; 24µA IQ; 2mm × 3mm QFN-16 package. | Higher IQ benefits ultra-low-power IoT sensors; larger footprint limits ultra-compact designs. | Select when lower quiescent current outweighs board space constraints and fixed 1.2V/1.8V matches system requirements. |
| RT8070ZSP | Adjustable outputs via external resistors; 3MHz switching; 45µA IQ; 3mm × 3mm QFN-16 package. | Flexibility to set custom voltages (e.g., 1.1V/1.2V) but requires 4 extra resistors and lacks HyperLight Load™ light-load optimization. | Select when output voltage customization is required and system load profile stays above 10mA where efficiency gap narrows. |
Compared with TPS62400DRVR and RT8070ZSP, the MIC23254-GCYMT-TR delivers superior light-load efficiency (85% @ 1mA vs. ≤75%) and smallest footprint (2mm × 2mm), making it optimal for space- and battery-life-critical portable applications where fixed 1.0V/1.8V rails are acceptable.
Availability
MIC23254-GCYMT-TR is available at Aetrix Electronics and suitable for mobile handsets, portable navigation devices, and USB-powered peripherals requiring stable component supply with guaranteed long-term availability and RoHS-compliant packaging.
Supply support for MIC23254-GCYMT-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
Micrel Inc. was a U.S.-based semiconductor company specializing in power management, analog, and mixed-signal ICs before its acquisition by Microchip Technology in 2015.
The MIC23254 belongs to Micrel's HyperLight Load™ family of high-frequency buck regulators, engineered specifically for ultra-compact, battery-powered portable electronics demanding high efficiency across wide load ranges.
FAQ
What is the recommended inductor value for MIC23254-GCYMT-TR in standard applications?
The MIC23254-GCYMT-TR is optimized for 1µH inductors, balancing transient response, efficiency, and output ripple. Typical recommended parts include Murata LQM21PN1R0MC0D (1µH, 0.8A, 190mΩ) or TDK GLF251812T1R0M (1µH, 0.8A, 100mΩ). Inductor values from 0.47µH to 4.7µH are supported, with 0.47µH improving transient speed and 4.7µH reducing ripple-both validated in the MIC23254-GCYMT-TR datasheet.
Does MIC23254-GCYMT-TR support independent voltage adjustment?
No, MIC23254-GCYMT-TR is a fixed-output device with factory-trimmed 1.0V and 1.8V channels. It does not support external resistor programming. For adjustable outputs, consider alternatives like RT8070ZSP-but note MIC23254-GCYMT-TR achieves tighter initial accuracy (±2.5%) and lower quiescent current (33µA) than most adjustable counterparts.
How does HyperLight Load™ mode affect MIC23254-GCYMT-TR efficiency below 10mA?
In HyperLight Load™ mode, MIC23254-GCYMT-TR transitions to pulse-frequency modulation (PFM), reducing switching frequency dynamically to maintain >85% efficiency at 1mA and >75% at 100µA. This avoids the steep efficiency drop seen in fixed-frequency PWM regulators at light loads, directly extending battery life in always-on subsystems powered by MIC23254-GCYMT-TR.
What is the maximum allowable PCB temperature rise for MIC23254-GCYMT-TR at full 400mA load per channel?
With θJA = 70°C/W and maximum junction temperature of +125°C, MIC23254-GCYMT-TR can sustain 400mA/channel continuously if ambient temperature remains ≤55°C on a standard 2-layer PCB with 25mm² ground plane. At +50°C ambient, calculated TJ = 50°C + (0.1W × 70°C/W) = 57°C-well within spec. Thermal derating is required above this ambient threshold.
Can MIC23254-GCYMT-TR be used with ceramic output capacitors smaller than 4.7µF?
Yes-MIC23254-GCYMT-TR is stable with ≥2.2µF X5R/X7R ceramic capacitors. However, using 4.7µF (as specified in the typical application) ensures optimal transient response, lowest output ripple (<3mVpp), and margin against capacitance loss over temperature/voltage bias. Smaller values may increase ripple and degrade load-step recovery, especially at higher currents.
MIC23254-GCYMT-TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- HyperLight Load®
- Package/Case:
- 10-UFDFN, 10-TMLF®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Fixed
- Number of Outputs:
- 2
- Voltage - Input (Min):
- 2.5V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 1V, 1.8V
- Voltage - Output (Max):
- -
- Current - Output:
- 400mA
- Frequency - Switching:
- 4MHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-TMLF® (2x2)
MIC23254-GCYMT-TR FAQ
1.How can I place an order for MIC23254-GCYMT-TR through Aetrix?
Please submit a Request for Quotation (RFQ) for MIC23254-GCYMT-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 MIC23254-GCYMT-TR reliable?
The price and inventory of MIC23254-GCYMT-TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MIC23254-GCYMT-TR is usually 5 days.
3.What payment methods are accepted for MIC23254-GCYMT-TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MIC23254-GCYMT-TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MIC23254-GCYMT-TR?
MIC23254-GCYMT-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MIC23254-GCYMT-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 MIC23254-GCYMT-TR?
For technical support, including MIC23254-GCYMT-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MIC23254-GCYMT-TR requirements.
6.How does Aetrix verify that MIC23254-GCYMT-TR is sourced from the original manufacturer or authorized distributors?
All MIC23254-GCYMT-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 MIC23254-GCYMT-TR meets industry standards.
7.What is the process for return or replacement of MIC23254-GCYMT-TR?
All MIC23254-GCYMT-TR units undergo pre-shipment inspection (PSI). If there is an issue with MIC23254-GCYMT-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 MIC23254-GCYMT-TR part is unused and in its original packaging.
Return procedure for MIC23254-GCYMT-TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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