My Inquiry
My Account
Microchip Technology MIC2287YD5-TR
- Part No.:
- MIC2287YD5-TR
- Manufacturer:
- Microchip Technology
- Category:
- LED Drivers
- Package:
- SOT-23-5 Thin, TSOT-23-5
- Datasheet:
-
MIC2287YD5-TR.pdf
- Description:
- IC LED DRVR RGLTR PWM TSOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:1,746
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MIC2287YD5-TR from Micrel is a 1.2MHz PWM white LED driver IC optimized for constant-current backlighting in portable devices. It operates from 2.5V to 10V input, delivers up to 34V output, supports >500mA switch current, and uses a 95mV feedback reference to minimize power loss in the current-sense resistor-enabling efficient driving of up to 8-series white LEDs in cell phones and digital cameras.
For engineers reviewing the MIC2287YD5-TR datasheet, MIC2287YD5-TR pinout, MIC2287YD5-TR application, or MIC2287YD5-TR equivalent, key selection considerations include its Thin SOT-23-5 lead-free package, OVP implementation via external Zener (not integrated), shutdown current <1µA, and compatibility with PWM or analog dimming control schemes.
Technical Context
The MIC2287YD5-TR implements a constant-frequency, current-mode PWM boost regulator architecture with an internal 500mA bipolar transistor switch and 1.2MHz oscillator. Its gm error amplifier compares the FB pin voltage against a 95mV reference to regulate LED current, while slope compensation ensures stable operation across duty cycles.
It features under-voltage lockout (UVLO) at 2.1V typical, over-temperature shutdown at 150°C with 10°C hysteresis, and <1% line/load regulation. The device lacks an integrated OVP pin-unlike MLF-packaged variants-requiring external Zener clamping between SW and FB for open-circuit protection.
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 regulated 3.3V/5V rails without external LDO. |
| Switching Frequency | 1.2MHz (±12.5%) - enables use of small 10µH inductors and 0.22µF ceramic output capacitors to reduce PCB area. |
| Feedback Voltage | 95mV ±5% - lowers I²R loss in sense resistor, improving efficiency and thermal performance at high LED currents. |
| Switch Current Limit | 750mA typical - sustains >500mA continuous switch current needed for 6–8 white LEDs at 20mA each. |
| Shutdown Current | 0.1–1µA - minimizes battery drain during display-off states in portable applications. |
| Junction Temp Range | –40°C to +125°C - qualified for automotive infotainment displays and industrial handhelds with extended thermal margins. |
| Oscillator Accuracy | ±12.5% over temp - ensures predictable EMI profile and consistent external component sizing. |
Pinout & Package
Package: Thin SOT-23-5, lead-free, 1.3mm height, exposed pad not electrically connected (no thermal slug).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (SW) | Switch node | Collector of internal bipolar transistor; connects to inductor and output diode anode - carries high dI/dt switching current. |
| 2 (GND) | Ground return | Common reference for control circuitry and power path; must be low-inductance connection to minimize noise coupling. |
| 3 (FB) | Feedback input | Senses LED current via external resistor to ground; 95mV reference sets ILED = 95mV/RFB. |
| 4 (EN) | Enable control | Active-high logic input; drives internal bias circuits on/off - used for PWM dimming or system-level power sequencing. |
| 5 (VIN) | Supply input | Powers internal regulators and gate drive; requires local 1µF ceramic bypass capacitor near pin. |
Key Features
| Feature | Design Value |
|---|---|
| Constant-frequency PWM control | 1.2MHz operation enables compact magnetics and predictable EMI filtering without frequency sweeping artifacts. |
| Low-feedback reference | 95mV reference reduces sense-resistor power dissipation by ~8× versus 1V references, critical for thermal-limited handheld designs. |
| UVLO with hysteresis | 2.1V turn-on / 1.95V turn-off threshold prevents oscillation near battery depletion in Li-ion systems. |
| Thermal shutdown protection | 150°C trip with 10°C hysteresis avoids latch-up during transient overloads and ensures self-recovery after cooling. |
| High-efficiency current mode | Typical 82% efficiency at 3.6V input driving 6-series LEDs - achieved via low VCE(sat) (450mV @ 500mA) and minimized quiescent current. |
Applications
| Cell Phone Backlight | Digital Camera Display |
|---|---|
Use Scenario: Driving 3–5 white LEDs in a slim smartphone LCD backlight with dynamic brightness control. IC Role / Device Role / Timing Role: Constant-current boost controller regulating LED string current via FB pin; EN pin accepts 1kHz PWM for dimming. Use Value: 95mV feedback reference cuts sense-resistor power loss, extending battery life by up to 12% versus higher-reference drivers in 20mA LED strings. | Use Scenario: Powering high-brightness 6-series white LED array for rear LCD in compact digital cameras. IC Role / Device Role / Timing Role: High-frequency (1.2MHz) boost converter enabling 10µH inductor and 0.22µF ceramic capacitor - reducing board area by 40% vs. 500kHz alternatives. Use Value: 750mA switch current limit supports full-brightness operation even with aging LEDs requiring higher forward voltage. |
| GPS Navigation Unit | MP3 Player UI Display |
Use Scenario: Illuminating outdoor-readable TFT display in automotive-grade GPS units operating from 9–16V supply via LDO. IC Role / Device Role / Timing Role: Input-supply-tolerant (2.5–10V) LED driver accepting regulated 3.3V rail; UVLO prevents erratic startup during cold cranking. Use Value: –40°C to +125°C junction rating ensures reliable operation in unventilated dashboard enclosures under solar loading. | Use Scenario: Controlling brightness of OLED or LCD status display in battery-powered MP3 players. IC Role / Device Role / Timing Role: Low-quiescent-current (2.5mA active, <1µA shutdown) driver minimizing standby drain during audio playback pauses. Use Value: <1µA shutdown current extends shelf life and preserves charge during weeks of non-use - critical for consumer portables. |
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 | 1.6MHz switching frequency; 200mA max switch current; integrated MOSFET; no OVP pin. | Lower output capability limits to ≤4-series LEDs at 20mA; better suited for ultra-compact wearables than high-brightness displays. | Select when board space is more constrained than LED count, and 34V output is unnecessary. |
| MAX1910EUT+T | 1.2MHz operation; 300mA switch current; 1.25V feedback reference; integrated soft-start. | Higher 1.25V FB voltage increases sense-resistor loss; limited to ≤5-series LEDs; no thermal shutdown. | Choose only if existing design uses 1.25V reference resistors and thermal margin is guaranteed externally. |
Compared with LM3407MMX/NOPB and MAX1910EUT+T, the MIC2287YD5-TR delivers higher switch current (750mA vs. 200/300mA) and lower feedback voltage (95mV vs. N/A/1.25V), enabling brighter, more efficient multi-LED strings in space-constrained portable designs - though it requires external OVP protection unlike some newer alternatives.
Availability
MIC2287YD5-TR is available at Aetrix Electronics and suitable for cell phone backlighting, digital camera displays, and GPS navigation units requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MIC2287YD5-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, space-constrained white LED backlighting in portable consumer electronics - emphasizing low-voltage operation, minimal external components, and robust thermal performance.
FAQ
What is the maximum number of white LEDs the MIC2287YD5-TR can drive in series?
The MIC2287YD5-TR supports up to 8 white LEDs in series, based on its 34V maximum output voltage and typical 3.2–3.6V forward voltage per LED. At 3.4V average VF, eight LEDs require 27.2V - well within the 34V limit. The actual count depends on LED VF tolerance, temperature drift, and input voltage headroom; design margin should be verified using worst-case VF and minimum VIN.
Does the MIC2287YD5-TR include built-in overvoltage protection (OVP)?
No, the MIC2287YD5-TR in Thin SOT-23-5 package does not include an integrated OVP pin or circuit. Unlike MLF-packaged variants (e.g., MIC2287-34YML), it requires external protection - typically a Zener diode from SW to FB - to clamp output voltage during LED open-circuit faults. This is explicitly stated in the datasheet's "Open-Circuit Protection" section and functional diagram notes.
How is LED current set on the MIC2287YD5-TR?
LED current is set by an external resistor (RFB) connected between the FB pin and GND. The MIC2287YD5-TR regulates the voltage at FB to 95mV ±5%, so ILED = 95mV / RFB. For example, a 4.75Ω resistor sets 20mA. The FB pin draws only –450nA, making RFB value highly accurate and insensitive to leakage errors.
Can the MIC2287YD5-TR be used with PWM dimming, and what frequency range is recommended?
Yes, the MIC2287YD5-TR supports PWM dimming via the EN pin. A logic-level PWM signal applied to EN turns the entire regulator on/off synchronously with the LED current. The datasheet recommends 100Hz to 10kHz for optimal human-eye perception and efficiency; frequencies below 100Hz cause visible flicker, while above 10kHz may increase switching losses without perceptible benefit.
What is the thermal resistance (θJA) of the MIC2287YD5-TR in its Thin SOT-23-5 package?
The junction-to-ambient thermal resistance (θJA) for the MIC2287YD5-TR in Thin SOT-23-5 package is 256°C/W, as specified in the Absolute Maximum Ratings table. This high value reflects the package's limited copper exposure and underscores the need for careful PCB layout - including generous GND copper pour and thermal vias - to maintain safe junction temperatures under 500mA switching loads.
MIC2287YD5-TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- SOT-23-5 Thin, TSOT-23-5
- 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:
- -
- 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:
- TSOT-23-5
MIC2287YD5-TR FAQ
1.How can I place an order for MIC2287YD5-TR through Aetrix?
Please submit a Request for Quotation (RFQ) for MIC2287YD5-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 MIC2287YD5-TR reliable?
The price and inventory of MIC2287YD5-TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MIC2287YD5-TR is usually 5 days.
3.What payment methods are accepted for MIC2287YD5-TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MIC2287YD5-TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MIC2287YD5-TR?
MIC2287YD5-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MIC2287YD5-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 MIC2287YD5-TR?
For technical support, including MIC2287YD5-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MIC2287YD5-TR requirements.
6.How does Aetrix verify that MIC2287YD5-TR is sourced from the original manufacturer or authorized distributors?
All MIC2287YD5-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 MIC2287YD5-TR meets industry standards.
7.What is the process for return or replacement of MIC2287YD5-TR?
All MIC2287YD5-TR units undergo pre-shipment inspection (PSI). If there is an issue with MIC2287YD5-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 MIC2287YD5-TR part is unused and in its original packaging.
Return procedure for MIC2287YD5-TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MIC2287YD5-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…
