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Microchip Technology MIC2287-24YML-TR
- Part No.:
- MIC2287-24YML-TR
- Manufacturer:
- Microchip Technology
- Category:
- LED Drivers
- Package:
- 8-VFDFN Exposed Pad, 8-MLF®
- Datasheet:
-
MIC2287-24YML-TR.pdf
- Description:
- IC LED DRVR RGLTR PWM 750MA 8MLF
- Quantity:
- Payment:
- Shipping:
Inventory:1,816
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Product details
Overview
MIC2287-24YML-TR from Micrel is a 1.2MHz PWM white LED driver IC optimized for constant-current backlighting of 3–6 series white LEDs, featuring 24V overvoltage protection (OVP), 95mV feedback voltage, and 500mA switch current in an 8-lead 2mm × 2mm MLF™ package. It operates from 2.5V to 10V input and delivers up to 34V output, enabling uniform brightness in compact portable devices.
For engineers reviewing the MIC2287-24YML-TR datasheet, MIC2287-24YML-TR pinout, MIC2287-24YML-TR application, or MIC2287-24YML-TR equivalent, key selection criteria include OVP threshold accuracy (21–24V), thermal shutdown at 150°C, <1µA shutdown current, 1.2MHz fixed-frequency operation for low EMI, and compatibility with standard 2mm × 2mm MLF™ land patterns.
Technical Context
The MIC2287-24YML-TR implements constant-frequency current-mode PWM control using an internal 1.2MHz oscillator, slope-compensated current amplifier, and gm error amplifier referenced to 95mV. Its bipolar output transistor supports ≥500mA switch current with 450mV saturation voltage at 0.5A.
OVP functionality is implemented via dedicated OVP pin (Pin 1) tied to output voltage, triggering shutdown when sensed voltage exceeds 21–24V - a feature exclusive to the 8-lead MLF™ package. The IC integrates UVLO (2.1V typical), overtemperature shutdown (150°C), and <1% line/load regulation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.5V to 10V - supports single-cell Li-ion (3.0–4.2V) and multi-cell alkaline/NiMH systems without external LDO. |
| OVP Threshold | 21V to 24V - clamps output during open-circuit LED failure, protecting SW node and external diode/capacitor. |
| Feedback Voltage | 95mV ±5% - minimizes power loss in current-sense resistor and enables precise ILED = 95mV/RFB. |
| Switch Current Limit | 750mA typical - ensures robust drive for 6-series LED strings at full brightness under worst-case VIN and temperature. |
| Shutdown Current | ≤1µA - preserves battery life in standby mode for portable backlight applications. |
| Oscillator Frequency | 1.05–1.35MHz - enables use of small 10µH inductors and 0.22µF ceramic output capacitors, reducing PCB area by >40% vs. 500kHz designs. |
| Junction Temp Range | –40°C to +125°C - qualified for automotive display modules and industrial handhelds with extended thermal margins. |
Pinout & Package
Package: 8-lead 2mm × 2mm MLF™ (exposed pad), lead-free, RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OVP) | Overvoltage sense input | Direct connection to boost output node; triggers shutdown if voltage exceeds 21–24V threshold. |
| 2 (GND) | Analog ground | Reference for FB and OVP comparators; must be routed separately from PGND to minimize noise coupling. |
| 3 (FB) | Current-sense feedback input | Connects to cathode of LED string; sets LED current via external resistor: ILED = 95mV/RFB. |
| 4 (EN) | Enable control input | Logic-high (>1.5V) enables switching; logic-low (<0.4V) disables regulator and reduces IIN to ≤1µA. |
| 5 (VIN) | Power supply input | Supplies internal circuitry (bias, oscillator, gate drive); accepts 2.5–10V with UVLO at 2.1V. |
| 6 (SW) | Switch node output | Drives external Schottky diode and inductor; rated for –0.3V to 34V, 2A peak transient. |
| 7 (PGND) | Power ground | Return path for switch current; connects to exposed pad for thermal dissipation (θJA = 93°C/W). |
| 8 (NC) | No connect | No internal die connection; must remain unconnected or grounded per layout guidelines. |
Key Features
| Feature | Design Value |
|---|---|
| 24V OVP with dedicated pin | Enables fail-safe open-circuit protection without external zener, reducing BOM count and layout complexity in 6-LED designs. |
| 95mV feedback reference | Lowers sense-resistor power dissipation by 75% vs. 200mV references, allowing 0402/0603 resistors and improving thermal margin. |
| 1.2MHz fixed-frequency PWM | Permits use of 10µH inductors and 0.22µF ceramic capacitors, cutting solution size by >50% versus 500kHz alternatives. |
| Integrated bipolar switch | Eliminates need for external MOSFET and gate driver, simplifying design and reducing footprint in space-constrained mobile PCBs. |
| –40°C to +125°C operation | Validated across full junction range, supporting automotive infotainment displays and ruggedized industrial HMIs. |
Applications
| Cell Phone Backlighting | GPS Handheld Display |
|---|---|
Use Scenario: Driving 4–5 white LEDs in series for high-brightness LCD backlight in slim smartphone bezels. IC Role / Device Role / Timing Role: Constant-current boost controller with PWM dimming interface via EN pin. Use Value: 24V OVP prevents damage during LED string open-circuit faults; 1.2MHz switching enables 2.0mm × 2.0mm total solution footprint. |
Use Scenario: Powering 6-series white LED backlight in outdoor GPS units requiring wide temperature operation. IC Role / Device Role / Timing Role: High-efficiency LED driver with thermal shutdown and UVLO for battery-powered reliability. Use Value: –40°C to +125°C rating ensures stable current regulation in vehicle-mounted units; 95mV FB reference minimizes battery drain. |
| Digital Camera Flash | IP Phone Display |
Use Scenario: Delivering short-duration, high-current pulses to white LED flash array in compact camera modules. IC Role / Device Role / Timing Role: Fast-response boost driver supporting PWM-triggered burst mode via EN pin. Use Value: 500mA+ switch current supports 100mA–350mA flash currents; 1.2MHz frequency avoids audible noise in audio-sensitive devices. |
Use Scenario: Providing uniform backlight for monochrome or color LCD on VoIP desk phones with standby power constraints. IC Role / Device Role / Timing Role: Low-quiescent-current LED driver with programmable dimming via FB pin DC voltage. Use Value: ≤1µA shutdown current extends battery backup runtime; 24V OVP protects against capacitor aging-induced overvoltage. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar white LED driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX16832ATA+T | Higher 36V OVP option; requires external MOSFET; 600kHz switching frequency. | Better suited for 8–10 LED strings; larger inductor/capacitor requirements increase board area. | Select when higher OVP margin or external FET flexibility is required; not drop-in due to different pinout and control architecture. |
| TPS61165DRVR | Integrated 40V MOSFET; 1.2MHz switching; no dedicated OVP pin - relies on FB-based clamping. | Lacks hardware OVP; requires external resistor divider for overvoltage detection, adding component count and tolerance sensitivity. | Choose for cost-sensitive designs where OVP is managed externally; verify FB-clamp stability under open-circuit conditions. |
Compared with MAX16832ATA+T and TPS61165DRVR, the MIC2287-24YML-TR provides hardware-enforced 24V OVP in a minimal 2mm × 2mm footprint with no external FET or divider network, making it optimal for compact, fault-tolerant 3–6 LED backlighting where layout area and reliability are critical.
Availability
MIC2287-24YML-TR is available at Aetrix Electronics and suitable for cell phone backlighting, GPS display modules, and IP phone LCDs requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for MIC2287-24YML-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 analog and mixed-signal semiconductor company acquired by Microchip Technology in 2015, known for high-performance power management and timing solutions.
The MIC2287 product line was designed specifically for space-constrained, battery-powered white LED backlighting applications requiring high efficiency, integrated protection, and minimal external components.
FAQ
What is the exact overvoltage protection threshold for MIC2287-24YML-TR?
The MIC2287-24YML-TR has a guaranteed OVP threshold of 21V to 24V, as specified in the Electrical Characteristics table. This range is factory-trimmed and applies across the full –40°C to +125°C junction temperature range. The OVP function activates when the voltage applied to the OVP pin exceeds this threshold, forcing the IC into shutdown to protect the SW node and external components.
Can MIC2287-24YML-TR drive 8 white LEDs in series?
No - the MIC2287-24YML-TR is rated for up to 6-series white LEDs. While the IC's maximum output voltage is 34V, its 24V OVP threshold limits safe operation to LED strings with forward voltage ≤21V (e.g., 6×3.5V = 21V). Driving 8 LEDs (typically ≥28V) would exceed the OVP clamp and risk uncontrolled operation; use MIC2287-34YML-TR instead for 7–8 LED strings.
Does MIC2287-24YML-TR support analog dimming?
Yes - MIC2287-24YML-TR supports continuous (analog) dimming by applying a DC voltage to the FB pin through a series resistor. This method dynamically adjusts LED current without PWM artifacts, enabling high-frequency (>10kHz) intensity control ideal for noise-sensitive audio applications. The FB pin bias current is –450nA, minimizing loading error.
What is the thermal resistance (θJA) of MIC2287-24YML-TR in its MLF™ package?
The MIC2287-24YML-TR has a junction-to-ambient thermal resistance (θJA) of 93°C/W when mounted on a standard 4-layer PCB with recommended land pattern and exposed pad soldered to a 1-in² copper pour. This value assumes 2oz copper, thermal vias under the EP pad, and no additional heatsinking - sufficient for continuous 20mA LED current at +85°C ambient.
Is MIC2287-24YML-TR pin-compatible with other MIC2287 variants in the MLF™ package?
Yes - all MIC2287-xBML and MIC2287-xYML variants share identical 8-pin MLF™ pinout, including VIN, EN, SW, FB, GND, OVP, PGND, and NC. The only functional difference is the factory-set OVP threshold (15V, 24V, or 34V), making them electrically interchangeable in layouts designed for the 2mm × 2mm MLF™ footprint.
MIC2287-24YML-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
- Type:
- DC DC Regulator
- Topology:
- Step-Up (Boost)
- Internal Switch(s):
- Yes
- Number of Outputs:
- 1
- Voltage - Supply (Min):
- 2.5V
- Voltage - Supply (Max):
- 10V
- Voltage - Output:
- 24V
- Current - Output / Channel:
- 750mA (Switch)
- Frequency:
- 1.2MHz
- Dimming:
- Analog, PWM
- Applications:
- Backlight, Camera Flash
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-MLF® (2x2)
MIC2287-24YML-TR FAQ
1.How can I place an order for MIC2287-24YML-TR through Aetrix?
Please submit a Request for Quotation (RFQ) for MIC2287-24YML-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 MIC2287-24YML-TR reliable?
The price and inventory of MIC2287-24YML-TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MIC2287-24YML-TR is usually 5 days.
3.What payment methods are accepted for MIC2287-24YML-TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MIC2287-24YML-TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MIC2287-24YML-TR?
MIC2287-24YML-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MIC2287-24YML-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 MIC2287-24YML-TR?
For technical support, including MIC2287-24YML-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MIC2287-24YML-TR requirements.
6.How does Aetrix verify that MIC2287-24YML-TR is sourced from the original manufacturer or authorized distributors?
All MIC2287-24YML-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 MIC2287-24YML-TR meets industry standards.
7.What is the process for return or replacement of MIC2287-24YML-TR?
All MIC2287-24YML-TR units undergo pre-shipment inspection (PSI). If there is an issue with MIC2287-24YML-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 MIC2287-24YML-TR part is unused and in its original packaging.
Return procedure for MIC2287-24YML-TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MIC2287-24YML-TR Tags
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BCR402RE6327HTSA1
Infineon Technologies
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BCR430UXTSA2
Infineon Technologies
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BCR420UE6433HTMA1
Infineon Technologies
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BCR420UE6327HTSA1
Infineon Technologies
-
BCR421UE6327HTSA1
Infineon Technologies
-
LYT1604D-TL
Power Integrations
-
HV9910CLG-G
Microchip Technology
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CL2N8-G
Microchip Technology
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BCR420UW6-7
Diodes Incorporated
-
BCR421UW6-7
Diodes Incorporated
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BCR420UFD-7
Diodes Incorporated
-
BCR421UFD-7
Diodes Incorporated
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