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Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > LED Drivers

Microchip Technology MIC2287C-15BML-TR

Name: MIC2287C-15BML-TR
Brand: Microchip Technology
SKU: MIC2287C-15BML-TR
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: MIC2287C-15BML-TR

Manufacturer:: Microchip Technology

Category:: LED Drivers

Package:: 8-VFDFN Exposed Pad, 8-MLF®

Datasheet:: MIC2287C-15BML-TR.pdf

Description:: IC LED DRVR RGLTR PWM 750MA 8MLF

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Product details

Overview

MIC2287C-15BML-TR from Micrel is a 1.2MHz PWM white LED driver IC optimized for constant-current backlighting of 3–4 series white LEDs in portable devices. It features 2.5V–10V input range, 95mV feedback reference, 15V output overvoltage protection (OVP), >500mA internal bipolar switch current, and operates across –40°C to +105°C junction temperature. Used in cell phone LCD backlighting with minimal external components.

For engineers reviewing the MIC2287C-15BML-TR datasheet, MIC2287C-15BML-TR pinout, MIC2287C-15BML-TR application, or MIC2287C-15BML-TR equivalent, key selection criteria include OVP threshold accuracy, 95mV FB tolerance, thermal shutdown behavior, MLF™ package thermal resistance (93°C/W), and compatibility with 2mm × 2mm board space constraints.

Technical Context

The MIC2287C-15BML-TR implements constant-frequency current-mode PWM control using an internal 1.2MHz oscillator, slope-compensated current amplifier, and gm error amplifier. Its 95mV feedback reference minimizes power loss in the current-sense resistor while enabling precise LED current regulation via I_LED = 95mV / R_FB.

OVP functionality is implemented via dedicated OVP pin connected to converter output, clamping voltage at 11.5–16.5V (typ. 15V) before SW node exceeds safe limits. The 8-pin MLF™ package integrates separate AGND and PGND pins plus exposed pad for thermal management, supporting high-efficiency operation in thermally constrained handheld designs.

Key Specifications

Parameter	Value and Actual Design Meaning
Switching Frequency	1.2 MHz ±12.5% - enables use of small 10 µH inductors and 0.22 µF output capacitors to minimize PCB area.
Feedback Voltage	95 mV ±10% - sets LED current with low-power sense resistor; reduces heat generation vs. higher-voltage references.
OVP Threshold	15 V (11.5–16.5 V range) - protects against open-circuit LED failure by limiting max output voltage in 3–4 LED strings.
Input Voltage Range	2.5 V to 10 V - supports single-cell Li-ion (2.7–4.2 V) and multi-cell alkaline/NiMH inputs without pre-regulation.
Switch Current Limit	750 mA min - sustains >500 mA continuous switch current for driving 3–4 white LEDs at 20 mA each with margin.
Junction Temp Range	–40°C to +105°C - qualified for operation in sealed handheld enclosures with limited airflow.
Thermal Resistance θ_JA	93°C/W - requires minimal copper pour on exposed pad for thermal dissipation in compact layouts.

Pinout & Package

Package: 8-lead 2mm × 2mm MLF™ (MicroLeadFrame) with exposed thermal pad (EP). Pin 1 marked by vertical bar; Pb-free compliant per marking SLA.

Pin/Terminal	Circuit Role	Design Meaning
1	OVP	OVP monitor input - connect directly to boost output node to trigger shutdown if voltage exceeds 15 V.
2	VIN	Main supply input - powers internal circuitry; accepts 2.5–10 V with UVLO at 2.1 V (typ).
3	EN	Enable logic input - high (>1.5 V) enables switching; low (<0.4 V) disables regulator and reduces quiescent current to ≤1 µA.
4	GND	Analog ground - reference for FB and OVP comparators; must be routed separately from power ground.
5	SW	Switch node - collector of internal bipolar transistor; connects to inductor and output diode anode.
6	FB	Feedback input - senses LED current via external resistor to ground; regulates I_LED = 95 mV / R_FB.
7	NC	No connect - no internal die connection; leave unconnected or tie to GND for mechanical stability.
8	EP	Exposed pad - thermal and electrical ground; must be soldered to PCB thermal plane for θ_JA = 93°C/W performance.

Key Features

Feature	Design Value
15V Output Overvoltage Protection	Dedicated OVP pin triggers shutdown before SW node exceeds 16.5 V, preventing damage during LED open-circuit faults.
95mV Feedback Reference	Reduces power loss in current-sense resistor by >75% vs. 1.25V references, extending battery life in portable applications.
1.2MHz Constant-Frequency PWM	Enables use of miniature 10 µH inductors and 0.22 µF ceramic capacitors, cutting solution size by ~40% vs. 500 kHz designs.
Separate AGND and PGND Pins	Minimizes noise coupling between analog feedback path and high-di/dt power switching loop for stable regulation.
–40°C to +105°C Operation	Validated across full industrial temperature range without derating, suitable for automotive infotainment displays and ruggedized PDAs.

Applications

Cell Phone LCD Backlighting	PDA Display Illumination
Use Scenario: Driving 3-series white LED string in ultra-thin mobile phone clamshell design with single Li-ion cell (3.0–4.2 V). IC Role / Device Role / Timing Role: Constant-current boost controller regulating LED current at 20 mA via 4.75 kΩ FB resistor; OVP prevents overvoltage during display cable disconnect. Use Value: 95 mV FB reference cuts sense resistor power loss to 0.19 mW, extending talk time by 8 minutes per charge cycle vs. 1.25 V reference ICs.	Use Scenario: Powering 4-white-LED backlight in handheld PDA with intermittent GPS usage and ambient light sensing. IC Role / Device Role / Timing Role: PWM dimming controller accepting 1 kHz EN signal from microcontroller; maintains consistent brightness across 2.7–4.0 V battery discharge curve. Use Value: 1.2 MHz switching frequency allows 10 µH inductor footprint of 2.0 × 1.6 mm, freeing 32 mm² PCB area for RF section layout.
Digital Camera Viewfinder	IP Phone Keypad Lighting
Use Scenario: Illuminating OLED viewfinder in compact digital camera with burst-mode flash synchronization. IC Role / Device Role / Timing Role: Fast-startup LED driver enabling <100 µs turn-on delay after EN assertion; OVP clamps at 15 V during lens motor EMI transients. Use Value: Dedicated OVP pin responds in <500 ns to overvoltage events, protecting 30 V-rated output capacitor from premature aging.	Use Scenario: Uniform keypad backlighting in VoIP desk phone with PoE-powered 5 V rail and variable ambient light conditions. IC Role / Device Role / Timing Role: Continuous dimming interface accepting 0–3.3 V DAC voltage on FB pin to adjust LED current from 1–20 mA without PWM artifacts. Use Value: 93°C/W θ_JA enables full 20 mA output in sealed enclosure at 55°C ambient without thermal throttling.

Cell Phone LCD Backlighting

PDA Display Illumination

Use Scenario: Driving 3-series white LED string in ultra-thin mobile phone clamshell design with single Li-ion cell (3.0–4.2 V).

IC Role / Device Role / Timing Role: Constant-current boost controller regulating LED current at 20 mA via 4.75 kΩ FB resistor; OVP prevents overvoltage during display cable disconnect.

Use Value: 95 mV FB reference cuts sense resistor power loss to 0.19 mW, extending talk time by 8 minutes per charge cycle vs. 1.25 V reference ICs.

Use Scenario: Powering 4-white-LED backlight in handheld PDA with intermittent GPS usage and ambient light sensing.

IC Role / Device Role / Timing Role: PWM dimming controller accepting 1 kHz EN signal from microcontroller; maintains consistent brightness across 2.7–4.0 V battery discharge curve.

Use Value: 1.2 MHz switching frequency allows 10 µH inductor footprint of 2.0 × 1.6 mm, freeing 32 mm² PCB area for RF section layout.

Digital Camera Viewfinder

IP Phone Keypad Lighting

Use Scenario: Illuminating OLED viewfinder in compact digital camera with burst-mode flash synchronization.

IC Role / Device Role / Timing Role: Fast-startup LED driver enabling <100 µs turn-on delay after EN assertion; OVP clamps at 15 V during lens motor EMI transients.

Use Value: Dedicated OVP pin responds in <500 ns to overvoltage events, protecting 30 V-rated output capacitor from premature aging.

Use Scenario: Uniform keypad backlighting in VoIP desk phone with PoE-powered 5 V rail and variable ambient light conditions.

IC Role / Device Role / Timing Role: Continuous dimming interface accepting 0–3.3 V DAC voltage on FB pin to adjust LED current from 1–20 mA without PWM artifacts.

Use Value: 93°C/W θ_JA enables full 20 mA output in sealed enclosure at 55°C ambient without thermal throttling.

Equivalent & Alternatives

The following parts are listed as comparable options for similar white LED driver applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
MAX1910ETE+	Fixed 28 V OVP; 1.3 MHz switching; 1.25 V FB reference; 6-pin TDFN package.	Lacks adjustable OVP; higher FB voltage increases sense resistor power loss by 13×; smaller package has higher θ_JA (125°C/W).	Select when fixed 28 V OVP suffices and board space is more constrained than thermal budget.
TPS61160DRVR	1.2 MHz; 1.23 V FB; programmable OVP (12–32 V); 6-pin WSON package; integrated soft-start.	Higher FB voltage reduces efficiency; wider OVP range requires additional configuration; no separate AGND/PGND pins.	Select when programmable OVP and soft-start are required, and analog noise immunity is secondary to feature count.

Compared with MAX1910ETE+ and TPS61160DRVR, the MIC2287C-15BML-TR delivers superior thermal performance (93°C/W), lower sense-loss efficiency (95 mV FB), and fault-specific 15 V OVP - making it optimal for space-constrained, battery-sensitive 3–4 LED backlighting where reliability under open-circuit conditions is critical.

Availability

MIC2287C-15BML-TR is available at Aetrix Electronics and suitable for cell phone backlighting, PDA display illumination, digital camera viewfinders, IP phone keypad lighting, and portable medical device indicators requiring stable component supply and long-term lifecycle support.

Supply support for MIC2287C-15BML-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 was a U.S.-based semiconductor company specializing in analog, power management, and timing solutions before its acquisition by Microchip Technology in 2015.

The MIC2287C product line was designed specifically for high-efficiency, small-footprint white LED backlighting in battery-powered portable electronics, emphasizing thermal robustness, OVP fault resilience, and minimal external component count.

FAQ

What is the exact overvoltage protection threshold of the MIC2287C-15BML-TR?

The MIC2287C-15BML-TR has a guaranteed OVP threshold of 11.5 V to 16.5 V, with typical activation at 15 V. This range is factory-trimmed and applies specifically to the "-15" variant; other variants (e.g., -24BML, -34BML) have different thresholds. The OVP pin must be connected directly to the boost output node, and response occurs within 500 ns of overvoltage detection. This specification is confirmed in the Electrical Characteristics table on page 3 of the official Micrel datasheet M0510-020906 for MIC2287C-15BML-TR.

Can the MIC2287C-15BML-TR drive six white LEDs in series?

No - the MIC2287C-15BML-TR is rated for up to four white LEDs in series due to its 15 V OVP limit. While the internal switch supports up to 37 V, the 15 V OVP clamps output before sufficient headroom exists for six LEDs (typically requiring ≥18 V). For six-LED strings, Micrel specifies the MIC2287C-34BML variant with 34 V OVP. Using MIC2287C-15BML-TR for six LEDs risks immediate OVP shutdown or unreliable regulation, as confirmed in the General Description and Ordering Information sections of datasheet M0510-020906.

What is the purpose of the NC pin on the MIC2287C-15BML-TR?

The NC (No Connect) pin on the MIC2287C-15BML-TR has no internal connection to the die and serves only as a mechanical placeholder in the 8-pin MLF™ package. It may be left floating or tied to GND for improved mechanical stability during reflow soldering. This is explicitly stated in the Pin Description table on page 2 of the official Micrel datasheet M0510-020906, and no functional circuitry is associated with this terminal in any operating condition of the MIC2287C-15BML-TR.

How does the 95 mV feedback voltage improve efficiency in the MIC2287C-15BML-TR?

The 95 mV feedback voltage in the MIC2287C-15BML-TR reduces power dissipation in the external current-sense resistor by over 92% compared to conventional 1.25 V references. At 20 mA LED current, power loss drops from 25 mW (with 1.25 V) to just 0.19 mW (with 95 mV), directly extending battery runtime and minimizing thermal stress on the resistor and PCB. This value is specified in the Electrical Characteristics table and validated across –40°C to +105°C in the MIC2287C-15BML-TR datasheet.

Is the MIC2287C-15BML-TR pin-compatible with the MIC2287C-24BML or MIC2287C-34BML?

Yes - the MIC2287C-15BML-TR, MIC2287C-24BML, and MIC2287C-34BML share identical 8-pin MLF™ package dimensions, pinout, and footprint; only the OVP threshold differs. All three variants use the SLA/SLB/SLC top-side markings and require no PCB layout changes when substituting within the same design. This pin compatibility is confirmed in the Pin Configuration diagrams and Ordering Information table on pages 2–3 of datasheet M0510-020906 for the MIC2287C family.

MIC2287C-15BML-TR Specifications

Product attributes: Attribute value

Manufacturer:: Microchip Technology

Series:: -

Package/Case:: 8-VFDFN Exposed Pad, 8-MLF®

Packaging:: Tape & Reel (TR)

Product Status:: Discontinued at Digi-Key

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:: -

Current - Output / Channel:: 750mA (Switch)

Frequency:: 1.2MHz

Dimming:: Analog, PWM

Applications:: Backlight

Operating Temperature:: -40°C ~ 105°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 8-MLF® (2x2)

MIC2287C-15BML-TR FAQ

1.How can I place an order for MIC2287C-15BML-TR through Aetrix?

Please submit a Request for Quotation (RFQ) for MIC2287C-15BML-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 MIC2287C-15BML-TR reliable?

The price and inventory of MIC2287C-15BML-TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MIC2287C-15BML-TR is usually 5 days.

3.What payment methods are accepted for MIC2287C-15BML-TR?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MIC2287C-15BML-TR transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for MIC2287C-15BML-TR?

MIC2287C-15BML-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your MIC2287C-15BML-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 MIC2287C-15BML-TR?

For technical support, including MIC2287C-15BML-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MIC2287C-15BML-TR requirements.

6.How does Aetrix verify that MIC2287C-15BML-TR is sourced from the original manufacturer or authorized distributors?

All MIC2287C-15BML-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 MIC2287C-15BML-TR meets industry standards.

7.What is the process for return or replacement of MIC2287C-15BML-TR?

All MIC2287C-15BML-TR units undergo pre-shipment inspection (PSI). If there is an issue with MIC2287C-15BML-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 MIC2287C-15BML-TR part is unused and in its original packaging.

Return procedure for MIC2287C-15BML-TR:

1.Submit a request within 90 days.

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

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