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Microchip Technology MIC2250YML-TR
- Part No.:
- MIC2250YML-TR
- Manufacturer:
- Microchip Technology
- Package:
- 8-VFDFN Exposed Pad, 8-MLF®
- Datasheet:
-
MIC2250YML-TR.pdf
- Description:
- IC REG BOOST ADJ 2A 8MLF
- Quantity:
- Payment:
- Shipping:
Inventory:2,931
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Product details
Overview
MIC2250YML-TR from Micrel Inc. is a high-efficiency, low-EMI DC/DC boost switching regulator optimized for noise-sensitive battery-powered handheld devices. It features 2.5V–5.5V input range, adjustable output up to 32V, 52µA typical quiescent current, internal 34V/2A switch, and pseudo-random dithering via DITH pin for up to 10dB EMI reduction - used in LCD/OLED display bias supplies requiring stable high-voltage rails.
For engineers reviewing the MIC2250YML-TR datasheet, MIC2250YML-TR pinout, MIC2250YML-TR application, or MIC2250YML-TR equivalent, key selection criteria include its 8-pin 2mm × 2mm MLF® package, –40°C to +125°C junction temperature rating, constant peak current control for low output ripple, and compatibility with ceramic capacitors (1µF–22µF) and inductors (4.7µH–22µH).
Technical Context
The MIC2250YML-TR employs a hybrid PFM/current-mode control architecture: at light loads (<1W), it operates in pulse-frequency modulation to maintain >80% efficiency across a 300:1 load range; above ~1W, it transitions to current-mode regulation with variable off-time and fixed-frequency-like behavior. Its proprietary dithering circuit modulates switch off-time by ±20% when DITH pin is high, spreading spectral energy to suppress EMI peaks.
It integrates a 34V-rated NMOS power switch with 0.5Ω typical ON-resistance and 2A current limit, supports external feedback via 1.24V reference (FB pin), and includes UVLO (2.0V typ), thermal shutdown (130°C), and <1µA shutdown current. The separation of AGND and PGND pins enforces clean analog reference and high-current return paths.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.5V to 5.5V - supports single-cell Li-ion (3.0–4.2V) and dual-cell alkaline (2.4–3.2V) inputs without pre-regulation. |
| Output Voltage Range | Adjustable up to 32V - set via external resistor divider on FB pin; enables bias generation for OLED anodes or CCD sensors. |
| Peak Efficiency | 90% at 100mA - minimizes thermal rise in space-constrained portable designs. |
| Quiescent Current | 52µA typical - preserves battery life during standby in always-on display modules. |
| Switch Rating | 34V drain-source, 2A peak current - allows direct drive of 15V/24V local rails without external FETs. |
| EMI Reduction | Pseudo-random dithering (±20% off-time variation) - reduces narrowband EMI peaks by up to 10dB without added filtering. |
| Shutdown Current | <1µA - ensures negligible leakage during system sleep modes. |
Pinout & Package
Package: 8-pin 2mm × 2mm MLF® (leadless, exposed thermal pad), RoHS-compliant, NiPdAu lead finish, halogen-free mold compound.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| FB (Pin 1) | Feedback input | Senses output voltage via resistor divider; internal 1.24V reference enables precise VOUT = 1.24V × (1 + R1/R2). |
| AGND (Pin 2) | Analog ground | Reference ground for error amplifier and control circuitry; must be routed separately from PGND to avoid noise coupling. |
| PGND (Pin 3) | Power ground | High-current return path for switch node and inductor; connects directly to exposed thermal pad for thermal and electrical performance. |
| SW (Pin 4) | Switch node | Drain of internal 34V/2A NMOS; connects to inductor; carries high di/dt switching current - requires short, low-inductance trace. |
| NC (Pin 5) | No connect | Not internally bonded - must remain unconnected; no routing or copper fill required. |
| VIN (Pin 6) | Input supply | 2.5V–5.5V power input; requires local 10µF ceramic decoupling capacitor placed adjacent to pin. |
| DITH (Pin 7) | Dither enable | Logic-high enables ±20% off-time dithering for EMI reduction; logic-low disables dithering (fixed-frequency operation). |
| EN (Pin 8) | Enable input | Active-high logic control; 1.5V threshold turn-on ensures compatibility with 1.8V/3.3V GPIO; must not float. |
| HS PAD (EPAD) | Thermal & power ground | Exposed backside pad; must be soldered to large PCB ground plane for thermal dissipation (θJA = 90°C/W) and low-impedance PGND return. |
Key Features
| Feature | Design Value |
|---|---|
| Hybrid PFM/current-mode control | Maintains >80% efficiency from 1mA to 300mA - eliminates need for mode-selection circuitry in wide-dynamic-range portable loads. |
| Integrated 34V/2A power switch | Enables compact 32V boost solutions without external MOSFET or driver - reduces BOM count and layout area. |
| Dither-enabled EMI reduction | ±20% off-time modulation lowers peak radiated emissions by up to 10dB - simplifies EMC compliance in handheld enclosures. |
| Stable with ceramic capacitors | Operates reliably with 1µF–22µF X5R/X7R ceramics - avoids bulky electrolytics and improves long-term reliability. |
| Separate AGND/PGND pins | Prevents switching noise from corrupting feedback accuracy - critical for stable regulation under dynamic load transients. |
Applications
| LCD/OLED Display Bias Supply | CCD Image Sensor Bias Supply |
|---|---|
Use Scenario: Generating 15–32V anode bias for active-matrix OLED panels in smartphones and wearables. IC Role / Device Role / Timing Role: Primary boost regulator providing regulated high-voltage rail with low ripple and fast transient response. Use Value: Enables uniform pixel brightness and contrast control via stable, low-noise bias - critical for visual fidelity in AMOLED displays. |
Use Scenario: Supplying 15–24V bias to CCD image sensor vertical/horizontal drivers in portable cameras. IC Role / Device Role / Timing Role: High-voltage DC/DC converter delivering low-noise, tightly regulated bias independent of battery voltage sag. Use Value: Reduces dark current and fixed-pattern noise in captured images by minimizing output voltage drift and ripple. |
| Mobile Phone Local 5V/15V Rail | Haptic Feedback Driver Supply |
Use Scenario: Creating isolated 5V or 15V auxiliary rails for USB OTG, camera flash ICs, or audio codecs in battery-powered phones. IC Role / Device Role / Timing Role: Secondary boost regulator supporting peripheral subsystems requiring higher voltage than main PMIC outputs. Use Value: Eliminates need for discrete boost stages - saves board space while maintaining >80% efficiency across varying load conditions. |
Use Scenario: Powering piezoelectric or voice-coil haptic actuators requiring 12–24V pulses for tactile feedback in touchscreens. IC Role / Device Role / Timing Role: Fast-response boost converter delivering burst-mode high-voltage pulses synchronized to UI events. Use Value: Ensures crisp, low-latency haptic response with minimal battery drain due to 52µA quiescent current and rapid startup. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar boost regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS61088RHLR | Higher 2.7V–12V input range; 5.5A switch; no integrated dithering; uses external compensation. | Better suited for multi-cell input or higher-current loads (>500mA); lacks built-in EMI reduction circuitry. | Select when input exceeds 5.5V or output current >300mA is required; add external EMI filters if needed. |
| MAX17062ETA+ | 2.7V–5.5V input; 32V max output; 1.2A switch; includes soft-start and overvoltage protection; no dither pin. | Offers tighter output tolerance (±1.5%) and OVP clamping but no EMI dithering; larger 10-pin TDFN package. | Choose for enhanced protection features and precision regulation where EMI is managed externally or at system level. |
Compared with TPS61088RHLR and MAX17062ETA+, the MIC2250YML-TR uniquely combines ultra-low quiescent current (52µA), integrated dithering for EMI suppression, and compact 2mm × 2mm MLF® packaging - making it optimal for space- and noise-constrained battery-powered displays and sensors.
Availability
MIC2250YML-TR is available at Aetrix Electronics and suitable for LCD/OLED display bias supply, CCD image sensor bias, and mobile phone local 5V/15V rail applications requiring stable component supply, long-lifecycle support, and RoHS-compliant packaging.
Supply support for MIC2250YML-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 analog, power management, and timing solutions before its acquisition by Microchip Technology in 2015. Known for high-reliability, low-power ICs targeting portable and industrial markets.
The MIC2250 product line was designed specifically for noise-sensitive, battery-operated portable electronics - emphasizing low EMI, high light-load efficiency, and minimal external component count in ultra-compact packages.
FAQ
What is the maximum output voltage supported by the MIC2250YML-TR?
The MIC2250YML-TR supports an adjustable output voltage up to 32V, set using an external resistor divider connected to the FB pin. The internal 1.24V reference enables precise calculation: VOUT = 1.24V × (1 + R1/R2). This capability makes the MIC2250YML-TR suitable for high-voltage bias applications such as OLED anode supplies and CCD sensor drivers.
Does the MIC2250YML-TR require an external diode, and what type is recommended?
Yes, the MIC2250YML-TR requires an external flyback diode. For output voltages below 10V, a Schottky diode (e.g., Vishay SL04) is recommended due to its low forward voltage drop. For higher outputs (e.g., 24V), a high-speed silicon diode like LS4148 is preferred - its lower leakage current improves light-load efficiency, especially at elevated temperatures. The diode must withstand the full output voltage and peak inductor current.
How does the DITH pin function on the MIC2250YML-TR?
The DITH pin on the MIC2250YML-TR enables or disables pseudo-random on-time dithering: connecting it to VIN activates ±20% off-time modulation, spreading the switching spectrum to reduce EMI peaks by up to 10dB; grounding it disables dithering for fixed-frequency operation. This feature is unique to the MLF®-package MIC2250 variants and is absent in the SOT-23 versions (MIC2250-1/-2).
What is the thermal performance of the MIC2250YML-TR in its 2mm × 2mm MLF® package?
The MIC2250YML-TR in its 8-pin 2mm × 2mm MLF® package has a junction-to-ambient thermal resistance (θJA) of 90°C/W when properly mounted with the exposed thermal pad soldered to a minimum 100mm² PCB ground plane. Combined with its <1µA shutdown current and 52µA quiescent current, this enables reliable operation up to +125°C junction temperature - critical for sealed portable enclosures with limited airflow.
Can the MIC2250YML-TR operate stably with only ceramic output capacitors?
Yes, the MIC2250YML-TR is explicitly characterized and guaranteed stable with ceramic output capacitors ranging from 1µF to 22µF - including X5R and X7R dielectrics. Its internal compensation and constant peak current control eliminate the need for electrolytic or tantalum capacitors, improving reliability and reducing footprint. Layout best practices (short traces, proper AGND/PGND separation) must still be followed to maintain stability.
MIC2250YML-TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-VFDFN Exposed Pad, 8-MLF®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Up
- Output Configuration:
- Positive
- Topology:
- Boost
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2.5V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 1.24V
- Voltage - Output (Max):
- 32V
- Current - Output:
- 2A (Switch)
- Frequency - Switching:
- Up to 2.5MHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-MLF® (2x2)
MIC2250YML-TR FAQ
1.How can I place an order for MIC2250YML-TR through Aetrix?
Please submit a Request for Quotation (RFQ) for MIC2250YML-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 MIC2250YML-TR reliable?
The price and inventory of MIC2250YML-TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MIC2250YML-TR is usually 5 days.
3.What payment methods are accepted for MIC2250YML-TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MIC2250YML-TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MIC2250YML-TR?
MIC2250YML-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MIC2250YML-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 MIC2250YML-TR?
For technical support, including MIC2250YML-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MIC2250YML-TR requirements.
6.How does Aetrix verify that MIC2250YML-TR is sourced from the original manufacturer or authorized distributors?
All MIC2250YML-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 MIC2250YML-TR meets industry standards.
7.What is the process for return or replacement of MIC2250YML-TR?
All MIC2250YML-TR units undergo pre-shipment inspection (PSI). If there is an issue with MIC2250YML-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 MIC2250YML-TR part is unused and in its original packaging.
Return procedure for MIC2250YML-TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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