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Microchip Technology MIC23250-F4YMT-TR
- Part No.:
- MIC23250-F4YMT-TR
- Manufacturer:
- Microchip Technology
- Package:
- 12-UFDFN Exposed Pad, 12-TMLF®
- Datasheet:
-
MIC23250-F4YMT-TR.pdf
- Description:
- IC REG BUCK 400MA DL 12MLF
- Quantity:
- Payment:
- Shipping:
Inventory:1,646
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Product details
Overview
MIC23250-F4YMT-TR from Micrel is a 4MHz dual-channel synchronous buck regulator delivering 400mA per output with HyperLight Load™ mode for ultra-high light-load efficiency and fast transient response. It operates from 2.7V to 5.5V input, delivers fixed output voltages (1.2V/1.8V), and integrates into space-constrained portable power rails for processor core and I/O supply. Its 2mm × 2mm Thin MLF® package requires only six external components.
For engineers reviewing the MIC23250-F4YMT-TR datasheet, MIC23250-F4YMT-TR pinout, MIC23250-F4YMT-TR application, or MIC23250-F4YMT-TR equivalent, key selection criteria include dual-output quiescent current (33µA), HyperLight Load™ ripple performance (20mVpp), 4MHz PWM switching stability, and compatibility with 1µH inductors and 4.7µF ceramic capacitors in sub-1mm height designs.
Technical Context
The MIC23250-F4YMT-TR implements a proprietary minimum-on/off-time control architecture enabling seamless transition between HyperLight Load™ (PFM) and fixed-frequency PWM modes. It uses integrated PMOS/NMOS synchronous switches with 0.6Ω/0.8Ω typical ON-resistance and supports independent enable control (EN1/EN2) for each output.
Its analog and power ground separation (AGND/PGND), dedicated AVIN supply, and SNS feedback sensing provide stable regulation across –40°C to +125°C junction temperature. The device achieves 94% peak efficiency at full load and maintains >85% at 1mA via adaptive switching frequency reduction and low-quiescent-current biasing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.7V to 5.5V - supports single-cell Li-ion, USB, and regulated 3.3V/5V rails without pre-regulation. |
| Output Current (per channel) | 400mA - sufficient for ARM Cortex-A/M cores, DDR I/O, and RF transceivers in portable devices. |
| Switching Frequency | 4MHz nominal - enables use of 1µH inductors and 4.7µF ceramic capacitors for <1mm profile solutions. |
| Quiescent Current | 33µA (both outputs enabled) - extends battery life in always-on subsystems like GPS or Bluetooth coexistence logic. |
| Output Ripple | 20mVpp in HyperLight Load™ mode - eliminates need for additional LC filtering in noise-sensitive analog sections. |
| Efficiency @ 1mA | 85% - ensures minimal self-heating and stable regulation during deep-sleep MCU states. |
| Shutdown Current | 0.01µA - enables true zero-power disable for unused voltage domains. |
| Junction Temperature Range | –40°C to +125°C - qualified for automotive infotainment and industrial handheld environments. |
Pinout & Package
Package: 10-pin 2mm × 2mm Thin MLF® (Pb-free, NiPdAu lead finish, halogen-free mold compound).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | SNS1 | Sense input for output 1 - connects directly to VOUT1 node for accurate feedback; requires low-inductance layout. |
| 2 | EN1 | Enable input for output 1 - logic high (>0.8V) activates channel; internal pull-down prevents floating. |
| 3 | AGND | Analog ground reference - must be externally tied to PGND but routed separately to minimize noise coupling. |
| 4 | SW1 | Switch node 1 - high-speed connection to inductor L1; requires short, wide trace to reduce EMI and losses. |
| 5 | PGND | Power ground return - carries high pulsed currents; forms tight loop with VIN and SW pins for thermal and EMI control. |
| 6 | VIN | Main power input - supplies internal MOSFETs; requires ≥2.2µF ceramic bypass capacitor close to pin. |
| 7 | SW2 | Switch node 2 - independent high-side output for second buck stage; shares no current path with SW1. |
| 8 | AVIN | Analog supply input - powers control circuitry; must be tied to VIN but decoupled with 0.01µF capacitor. |
| 9 | EN2 | Enable input for output 2 - independent logic control allows staggered power-up or dynamic rail sequencing. |
| 10 | SNS2 | Sense input for output 2 - identical function to SNS1; supports independent regulation of dual-core or mixed-voltage SoCs. |
Key Features
| Feature | Design Value |
|---|---|
| HyperLight Load™ mode | Enables PFM operation below ~70mA load, reducing quiescent current impact and maintaining >85% efficiency at 1mA. |
| Dual independent enable inputs | EN1/EN2 allow per-rail power gating - critical for low-power states in multi-domain processors and PMIC coordination. |
| Integrated synchronous MOSFETs | 0.6Ω PMOS / 0.8Ω NMOS switches eliminate external diodes and reduce conduction loss vs. asynchronous designs. |
| Ultra-low output ripple | 20mVpp in light-load mode and 3mV in full PWM - meets noise budgets for RF front-ends and high-resolution ADCs. |
| Thermal robustness | θJA = 70°C/W in 2mm × 2mm package - sustains 400mA continuous output without derating up to +85°C ambient. |
| Small solution footprint | Only six external components required - reduces BOM count and PCB area versus discrete DC/DC + LDO combinations. |
Applications
| Mobile Handsets | Portable Navigation Devices (GPS) |
|---|---|
Use Scenario: Dual-rail power for application processor (1.2V core) and GPS baseband (1.8V I/O) in slim smartphone form factors. IC Role / Device Role / Timing Role: Primary synchronous buck regulator supplying both core and interface domains with independent enable control. Use Value: 33µA quiescent current extends standby time; 4MHz switching enables 1µH inductors that fit under display bezels. |
Use Scenario: Power management for GPS receiver ICs requiring clean, low-noise 1.2V and 1.8V supplies in handheld units. IC Role / Device Role / Timing Role: Dual-output DC/DC converter providing regulated rails with minimized switching noise coupling into RF paths. Use Value: 20mVpp ripple in HyperLight Load™ mode avoids desensitization of GPS L1 band receivers during low-duty-cycle tracking. |
| WiFi/WiMax Modules | Digital Cameras |
Use Scenario: Supplying WLAN SoC (1.2V core) and PA bias (1.8V) in compact M.2 or mini-PCIe modules. IC Role / Device Role / Timing Role: High-efficiency dual buck regulator supporting burst-mode transmit/receive cycles with fast load transient response. Use Value: Ultra-fast transient response prevents brownout during WiFi packet transmission; 4MHz operation avoids interference with 2.4GHz band. |
Use Scenario: Powering image sensor (1.8V analog) and ISP (1.2V core) in ultra-thin digital cameras and action cams. IC Role / Device Role / Timing Role: Compact dual buck regulator delivering tightly regulated, low-noise rails for high-dynamic-range imaging. Use Value: Sub-1mm height design fits behind camera lens assemblies; 3mV PWM ripple prevents fixed-pattern noise in CMOS sensors. |
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 | 2.25MHz switching, 600mA per channel, 2.5V–5.5V input, 16-pin QFN; lacks HyperLight Load™, higher IQ (50µA) | Better suited for higher-current, lower-frequency designs where board space is less constrained | Select when >400mA per rail or lower EMI sensitivity is required; not drop-in due to different pinout and enable logic. |
| RT8059ZSP | 3MHz switching, 600mA per channel, 2.5V–5.5V input, 16-pin WQFN; includes power-good indicators, no light-load optimization | Preferred for systems requiring rail monitoring and sequencing feedback | Choose when system-level fault reporting is mandatory; requires redesign for enable timing and feedback network. |
Compared with TPS62400DRVR and RT8059ZSP, the MIC23250-F4YMT-TR uniquely delivers 4MHz operation in a 10-pin 2mm × 2mm package with industry-leading 33µA dual quiescent current-enabling longer battery life and smaller inductors where ultra-compact size and light-load efficiency are primary constraints.
Availability
MIC23250-F4YMT-TR is available at Aetrix Electronics and suitable for mobile handsets, portable navigation devices, and WiFi modules requiring stable component supply with guaranteed long-term availability and RoHS-compliant packaging.
Supply support for MIC23250-F4YMT-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., now part of Microchip Technology, specialized in high-performance analog and power management ICs for portable and industrial applications before its 2015 acquisition.
The MIC23250 product line was designed specifically for space-constrained, battery-powered devices needing dual, independently controlled, high-efficiency DC/DC conversion with minimal external components.
FAQ
What is the nominal output voltage configuration of the MIC23250-F4YMT-TR?
The MIC23250-F4YMT-TR is a fixed-output variant delivering 1.2V on Channel 1 and 1.8V on Channel 2. This configuration is laser-trimmed at wafer test and does not require external feedback resistors-reducing component count and layout complexity compared to adjustable versions like MIC23250-AAYMT.
Does the MIC23250-F4YMT-TR support independent shutdown of each output channel?
Yes, the MIC23250-F4YMT-TR provides fully independent enable control via EN1 and EN2 pins. Driving EN1 low disables Output 1 while Output 2 remains active if EN2 is high, enabling flexible power sequencing and domain-specific sleep modes without affecting other rails.
What inductor and capacitor values are recommended for optimal performance with the MIC23250-F4YMT-TR?
Micrel specifies a 1µH shielded inductor (e.g., Murata LQM21PN1R0MC0D) and 4.7µF X5R/X7R ceramic capacitors (e.g., TDK C1608X5R0J475K) for both outputs. These values achieve 4MHz operation, <1mm height, and meet ripple and transient requirements across the –40°C to +125°C range.
How does HyperLight Load™ mode improve efficiency at light loads in the MIC23250-F4YMT-TR?
HyperLight Load™ mode uses pulse-frequency modulation (PFM) with minimum-on/off-time control to reduce switching activity at light loads. This cuts gate drive and transition losses, allowing the MIC23250-F4YMT-TR to maintain 85% efficiency at 1mA-far exceeding conventional 4MHz PWM regulators that typically fall below 50% at that load.
Is the MIC23250-F4YMT-TR pin-compatible with other variants in the MIC23250 family?
No-the MIC23250-F4YMT-TR uses the 10-pin 2mm × 2mm Thin MLF® package, while adjustable versions (e.g., MIC23250-AAYMT) use a 12-pin 2.5mm × 2.5mm variant. Pin functions differ: FB1/FB2 pins replace SNS1/SNS2 in adjustable models, making them non-interchangeable without PCB redesign.
MIC23250-F4YMT-TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- HyperLight Load®
- Package/Case:
- 12-UFDFN Exposed Pad, 12-TMLF®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- -
- Number of Outputs:
- 2
- Voltage - Input (Min):
- 2.7V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- -
- 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:
- 12-MLF™ (2.5x2.5)
MIC23250-F4YMT-TR FAQ
1.How can I place an order for MIC23250-F4YMT-TR through Aetrix?
Please submit a Request for Quotation (RFQ) for MIC23250-F4YMT-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 MIC23250-F4YMT-TR reliable?
The price and inventory of MIC23250-F4YMT-TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MIC23250-F4YMT-TR is usually 5 days.
3.What payment methods are accepted for MIC23250-F4YMT-TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MIC23250-F4YMT-TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MIC23250-F4YMT-TR?
MIC23250-F4YMT-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MIC23250-F4YMT-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 MIC23250-F4YMT-TR?
For technical support, including MIC23250-F4YMT-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MIC23250-F4YMT-TR requirements.
6.How does Aetrix verify that MIC23250-F4YMT-TR is sourced from the original manufacturer or authorized distributors?
All MIC23250-F4YMT-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 MIC23250-F4YMT-TR meets industry standards.
7.What is the process for return or replacement of MIC23250-F4YMT-TR?
All MIC23250-F4YMT-TR units undergo pre-shipment inspection (PSI). If there is an issue with MIC23250-F4YMT-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 MIC23250-F4YMT-TR part is unused and in its original packaging.
Return procedure for MIC23250-F4YMT-TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MIC23250-F4YMT-TR Tags
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