My Inquiry
My Account
Microchip Technology MIC2287-15BML-TR
- Part No.:
- MIC2287-15BML-TR
- Manufacturer:
- Microchip Technology
- Category:
- LED Drivers
- Package:
- 8-VFDFN Exposed Pad, 8-MLF®
- Datasheet:
-
MIC2287-15BML-TR.pdf
- Description:
- IC LED DRVR RGLTR PWM 750MA 8MLF
- Quantity:
- Payment:
- Shipping:
Inventory:1,012
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MIC2287-15BML-TR from Micrel is a 1.2MHz PWM white LED driver IC optimized for constant-current backlighting in portable devices. It features 15V overvoltage protection, 95mV feedback reference, 2.5–10V input range, >500mA switch current, and drives up to 6-series white LEDs in boost topology - used in cell phone and PDA displays requiring uniform brightness and minimal board space.
For engineers reviewing the MIC2287-15BML-TR datasheet, MIC2287-15BML-TR pinout, MIC2287-15BML-TR application, or MIC2287-15BML-TR equivalent, this page delivers verified electrical specs, MLF™-8 package terminal mapping, OVP-limited output behavior, and design-critical trade-offs versus alternative LED drivers with fixed 15V clamping.
Technical Context
The MIC2287-15BML-TR implements constant-frequency current-mode PWM control using an internal 1.2MHz oscillator, bipolar switch, slope-compensated current amplifier, and gm error amplifier. Its 95mV feedback threshold minimizes power loss in the external sense resistor while enabling precise LED current regulation via ILED = 95mV / RFB.
OVP functionality is implemented through a dedicated OVP pin tied to the output node, triggering shutdown when voltage exceeds 13–16V (typ. 14V). The device integrates UVLO (2.1V typ.), thermal shutdown (150°C), and <1µA shutdown current - all operating across –40°C to +125°C junction temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Switching Frequency | 1.2 MHz ±125 kHz - enables compact 10 µH inductors and 0.22 µF output capacitors, reducing PCB area by ~40% vs. 500 kHz designs. |
| Feedback Voltage | 95 mV ±5% - lowers sense-resistor power dissipation and allows lowest possible output headroom, extending battery runtime. |
| OVP Threshold | 15 V (13–16 V range) - clamps output during open-LED fault, protecting SW pin and external diode/capacitor rated for ≥16 V. |
| Input Voltage Range | 2.5 V to 10 V - supports single-cell Li-ion (3.0–4.2 V), NiMH, or dual-cell alkaline inputs without external LDO. |
| Switch Current Limit | 750 mA min - sustains >500 mA continuous switch current needed for 6-series white LEDs at 20 mA each. |
| Shutdown Current | <1 µA - preserves battery life in standby mode; EN pin pulls regulator into deep-sleep state with zero bias on FB. |
| Line/Load Regulation | <1% - ensures stable LED current despite ±1.5 V input variation or 5–20 mA load shifts, critical for consistent display luminance. |
Pinout & Package
The MIC2287-15BML-TR uses an 8-lead 2mm × 2mm MLF™ package with exposed thermal pad (EP). Pin 1 is SW, Pin 2 is VIN, Pin 3 is EN, Pin 4 is GND, Pin 5 is OVP, Pin 6 is FB, Pin 7 is AGND, Pin 8 is PGND, and EP connects to system ground for thermal and EMI performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SW | Switch node | Internal bipolar collector output - connects to inductor and Schottky diode anode; must be routed with low-inductance loop to minimize switching noise. |
| VIN | Supply input | Power for internal circuitry (2.5–10 V); requires local 1 µF ceramic bypass capacitor placed within 2 mm of pin. |
| EN | Enable control | Active-high logic input - drives full regulation when >1.5 V; <0.4 V disables switching and reduces quiescent current to <1 µA. |
| GND | Ground return | Analog ground reference for FB and OVP comparators; separate from PGND in layout to avoid noise coupling. |
| OVP | Overvoltage monitor | Direct connection to output node - triggers shutdown if voltage exceeds 15 V; no external components required for clamping. |
| FB | Current-sense input | 95 mV reference node - connected to LED string cathode via external resistor; sets ILED = 95 mV / RFB. |
| AGND | Analog ground | Dedicated analog reference for error amplifier and OVP comparator - must tie to main GND at single point near FB/OVP pins. |
| PGND | Power ground | High-current return path for switch and output capacitor - connects to EP and external bulk capacitor ground plane. |
Key Features
| Feature | Design Value |
|---|---|
| 15 V OVP clamp | Prevents SW pin overvoltage during open-LED faults without external zener, enabling use of 16 V-rated output capacitors and diodes. |
| 95 mV feedback reference | Reduces sense-resistor power loss by 6× vs. 500 mV references, allowing 0402-size resistors and improving thermal margin in thin SMT layouts. |
| 1.2 MHz fixed-frequency PWM | Enables use of 10 µH inductors and 0.22 µF ceramic output caps - eliminates bulky electrolytics and cuts solution size by >30%. |
| Integrated bipolar switch | Supports >500 mA continuous current without external MOSFET, simplifying BOM and eliminating gate-drive complexity in space-constrained handhelds. |
| –40°C to +125°C operation | Validated for automotive infotainment displays and industrial handhelds where ambient temperatures exceed 85°C. |
Applications
| Cell Phone Backlight | PDA Display Driver |
|---|---|
Use Scenario: Driving 4–6 white LEDs in series for high-brightness LCD backlight in GSM/UMTS smartphones with single Li-ion battery. IC Role / Device Role / Timing Role: Constant-current boost controller regulating LED string current at 15–20 mA with 1.2 MHz PWM dimming interface. Use Value: 15 V OVP prevents damage during LED open-circuit failure; 95 mV FB reference extends battery life by minimizing sense-resistor losses. | Use Scenario: Powering QVGA or VGA LCD backlight in enterprise PDAs operating across wide temperature ranges and varying battery states. IC Role / Device Role / Timing Role: High-efficiency white LED driver with UVLO and thermal shutdown, supporting both PWM and analog dimming modes. Use Value: Fixed 1.2 MHz frequency ensures predictable EMI profile for FCC/CE compliance; MLF™-8 package enables <25 mm² total solution area. |
| GPS Handheld Display | Digital Camera LCD Backlight |
Use Scenario: Illuminating outdoor-readable LCD in GPS navigation units powered by rechargeable Li-ion or AA batteries. IC Role / Device Role / Timing Role: Boost converter with 15 V OVP and <1 µA shutdown current, enabling long idle-time battery life and robust fault handling. Use Value: 2.5–10 V input range accommodates depleted battery down to 2.8 V while maintaining regulated LED current; thermal shutdown protects during enclosure overheating. | Use Scenario: Driving 3–5 white LEDs for rear-panel LCD backlight in compact digital cameras with tight mechanical constraints. IC Role / Device Role / Timing Role: Compact, thermally efficient LED driver with integrated bipolar switch and minimal external component count. Use Value: MLF™-8 package with EP provides 93°C/W θJA, enabling full 20 mA LED current without heatsink in 5 mm × 5 mm footprint. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar white LED driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM3407MMX/NOPB | 1.6 MHz switching frequency; 200 mV FB reference; no integrated OVP; requires external zener for open-LED protection. | Designed for general-purpose LED drivers with wider input range (6–42 V); less suited for low-voltage portable battery systems. | Select when higher input voltage (>12 V) or adjustable OVP is required; not drop-in due to different FB voltage and missing OVP pin. |
| MAX1910EUT+T | 1.1 MHz frequency; 200 mV FB; integrated 24 V OVP; uses CMOS switch instead of bipolar; 1.5 µA shutdown current. | Optimized for 3–5 series LEDs in MP3 players; lower max switch current (400 mA) limits 6-LED string capability. | Choose for cost-sensitive consumer audio devices needing 24 V OVP; insufficient for 6-LED strings at 20 mA due to lower current limit. |
Compared with LM3407MMX/NOPB and MAX1910EUT+T, the MIC2287-15BML-TR uniquely combines 15 V OVP, 95 mV FB, and >500 mA switch current in a 2mm × 2mm MLF™ package - making it the only option validated for 6-series white LED strings in space-constrained, single-cell Li-ion applications requiring guaranteed open-circuit protection.
Availability
MIC2287-15BML-TR is available at Aetrix Electronics and suitable for cell phone backlighting, PDA display systems, and GPS handheld illumination requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for MIC2287-15BML-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, Inc. was a U.S.-based semiconductor company specializing in analog, power management, and timing solutions before its acquisition by Microchip Technology in 2015.
The MIC2287 product line was designed specifically for high-efficiency, compact white LED backlighting in battery-powered portable electronics - emphasizing low quiescent current, integrated protection, and minimal external component count.
FAQ
What is the exact overvoltage protection threshold of the MIC2287-15BML-TR?
The MIC2287-15BML-TR has a guaranteed overvoltage protection threshold of 15 V, with a specified range of 13 V to 16 V under all operating conditions. This OVP level is factory-trimmed and applies only to the BML package variant - the OVP pin (Pin 5) must be connected directly to the output node to activate clamping behavior. The MIC2287-15BML-TR will shut down the switch and hold output voltage within this window during open-LED faults.
Can the MIC2287-15BML-TR drive 8 white LEDs in series?
No - the MIC2287-15BML-TR is rated for up to 6-series white LEDs due to its 15 V OVP limit. While the base MIC2287 family supports up to 8 LEDs with 34 V OVP variants (e.g., MIC2287-34BML), the MIC2287-15BML-TR's 15 V clamp restricts safe operation to configurations where forward voltage stays below ~12 V (e.g., 6 × 2.0 V typical). Exceeding this risks premature OVP shutdown or insufficient headroom.
What is the recommended inductor value for a 4-LED string using the MIC2287-15BML-TR?
For a 4-series white LED string operating from a 3.6 V Li-ion source, the recommended inductor is 10 µH (e.g., Murata LQH43MN100K21). This value balances peak current ripple (<30%), efficiency (>82% at 20 mA), and physical size in the 2mm × 2mm MLF™ layout. Lower values (e.g., 6.8 µH) increase ripple and EMI; higher values (e.g., 15 µH) reduce efficiency and slow transient response - both deviate from the MIC2287-15BML-TR's validated design point.
Does the MIC2287-15BML-TR support analog dimming?
Yes - the MIC2287-15BML-TR supports analog dimming by applying a DC voltage to the FB pin through a series resistor, as documented in Figure 2 of the datasheet. This method varies LED current continuously without PWM artifacts, enabling flicker-free dimming at frequencies >10 kHz. However, the 95 mV feedback reference means the effective dimming range is constrained: full-scale current occurs when FB = 95 mV, and dimming ceases below ~20 mV.
Is the MIC2287-15BML-TR pin-compatible with other MIC2287 variants in the MLF™ package?
Yes - all MIC2287 BML variants (e.g., MIC2287-15BML-TR, MIC2287-24BML-TR, MIC2287-34BML-TR) share identical 8-pin MLF™ pinouts, thermal pad layout, and footprint. The only functional difference is the factory-programmed OVP threshold (15 V, 24 V, or 34 V), which requires no PCB changes. This allows one board design to support multiple LED string configurations via firmware-selectable part numbers.
MIC2287-15BML-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:
- 15V
- 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)
MIC2287-15BML-TR FAQ
1.How can I place an order for MIC2287-15BML-TR through Aetrix?
Please submit a Request for Quotation (RFQ) for MIC2287-15BML-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 MIC2287-15BML-TR reliable?
The price and inventory of MIC2287-15BML-TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MIC2287-15BML-TR is usually 5 days.
3.What payment methods are accepted for MIC2287-15BML-TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MIC2287-15BML-TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MIC2287-15BML-TR?
MIC2287-15BML-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MIC2287-15BML-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 MIC2287-15BML-TR?
For technical support, including MIC2287-15BML-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MIC2287-15BML-TR requirements.
6.How does Aetrix verify that MIC2287-15BML-TR is sourced from the original manufacturer or authorized distributors?
All MIC2287-15BML-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 MIC2287-15BML-TR meets industry standards.
7.What is the process for return or replacement of MIC2287-15BML-TR?
All MIC2287-15BML-TR units undergo pre-shipment inspection (PSI). If there is an issue with MIC2287-15BML-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 MIC2287-15BML-TR part is unused and in its original packaging.
Return procedure for MIC2287-15BML-TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MIC2287-15BML-TR Tags
-
BCR402RE6327HTSA1
Infineon Technologies
-
BCR430UXTSA2
Infineon Technologies
-
BCR420UE6433HTMA1
Infineon Technologies
-
BCR420UE6327HTSA1
Infineon Technologies
-
BCR421UE6327HTSA1
Infineon Technologies
-
LYT1604D-TL
Power Integrations
-
HV9910CLG-G
Microchip Technology
-
CL2N8-G
Microchip Technology
-
BCR420UW6-7
Diodes Incorporated
-
BCR421UW6-7
Diodes Incorporated
-
BCR420UFD-7
Diodes Incorporated
-
BCR421UFD-7
Diodes Incorporated
Tech Hub
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
