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Microchip Technology MIC2293-15YML-TR
- Part No.:
- MIC2293-15YML-TR
- Manufacturer:
- Microchip Technology
- Category:
- LED Drivers
- Package:
- 8-VFDFN Exposed Pad, 8-MLF®
- Datasheet:
-
MIC2293-15YML-TR.pdf
- Description:
- IC LED DRVR RGLTR PWM 750MA 8MLF
- Quantity:
- Payment:
- Shipping:
Inventory:1,757
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Product details
Overview
MIC2293-15YML-TR from Microchip Technology is a high-frequency PWM boost regulator IC optimized for constant-current white LED driver applications, featuring 2.0 MHz switching frequency, 15 V output overvoltage protection (OVP), internal Schottky diode, and operation from 2.5 V to 10 V input. It delivers up to 34 V output voltage with 95 mV feedback reference and supports LED backlighting in compact portable electronics.
For engineers reviewing the MIC2293-15YML-TR datasheet, MIC2293-15YML-TR pinout, MIC2293-15YML-TR application, or MIC2293-15YML-TR equivalent, key selection criteria include OVP threshold accuracy, 2 mm × 2 mm DFN-8 thermal performance, shutdown current <1 µA, stable ceramic capacitor compatibility, and PWM dimming interface via EN/FB pins.
Technical Context
The MIC2293-15YML-TR implements constant-frequency current-mode PWM control with a dedicated 2.0 MHz oscillator, slope compensation ramp generator, and gm error amplifier referenced to 95 mV. Its bipolar 500 mA switch and integrated Schottky diode enable efficient single-inductor boost conversion without external rectification.
It features dual-level protection: undervoltage lockout (2.1 V typical) and overtemperature shutdown (150 °C threshold), plus dedicated 15 V OVP monitoring that clamps output during open-circuit LED faults-critical for safeguarding SW node voltage within 34 V absolute maximum rating.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Switching Frequency | 2.0 MHz ±0.25 MHz - enables use of sub-10 µH inductors and avoids RF interference bands. |
| Feedback Voltage | 95 mV ±5% - sets LED current via external sense resistor (e.g., 4.75 Ω for 20 mA). |
| OVP Threshold | 15 V (typical 14 V, max 16 V) - protects against LED open-circuit failure while allowing margin for 4-LED strings (~12 V). |
| Input Voltage Range | 2.5 V to 10 V - supports direct operation from 1–2-cell Li-ion or 3–4-cell alkaline/NiMH batteries. |
| Shutdown Current | <1 µA - minimizes battery drain in standby mode for portable devices. |
| Junction Temp Range | –40°C to +125°C - qualified for automotive cabin and industrial ambient environments. |
| Package | 2 mm × 2 mm DFN-8 with exposed pad - provides low thermal resistance (θJA = 93°C/W) for high-power-density layouts. |
Pinout & Package
Package: 2 mm × 2 mm, 0.9 mm height, 8-pin DFN (ML) with exposed thermal pad (EP). RoHS-compliant, Pb-free matte tin finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1: OUT | Output / OVP Sense | Connects to output capacitor and LED anodes; monitors output for 15 V OVP clamp activation. |
| 2: VIN | Power Input | Accepts 2.5–10 V supply; feeds internal bias circuitry and switch driver. |
| 3: EN | Enable Control | Logic-high (>1.5 V) enables regulation; logic-low (<0.4 V) disables switching and reduces IIN to ≤1 µA. |
| 4, 8: AGND/PGND | Analog & Power Ground | Separate ground paths minimize noise coupling between feedback and switch return currents. |
| 5: NC | No Connect | Internally unconnected; must be left floating or tied to GND per layout best practice. |
| 6: FB | Current Sense Input | Monitors voltage across external sense resistor; regulates LED current to maintain 95 mV at this pin. |
| 7: SW | Switch Node | Connects to inductor and internal bipolar transistor collector; carries high di/dt switching current. |
| EP | Thermal Pad | Must be soldered to PCB copper pour for thermal dissipation and EMI reduction. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated Schottky Diode | Eliminates need for external rectifier, reducing BOM count and board area by ~30% vs discrete solutions. |
| Stable with Ceramic Capacitors | Enables use of low-ESR, small-footprint MLCCs instead of bulkier electrolytics or tantalums. |
| PWM Dimming Support | EN pin accepts 100 Hz–10 kHz PWM signals for flicker-free brightness control without efficiency loss. |
| Open-Circuit Protection | Dedicated 15 V OVP circuit prevents SW node overvoltage during LED string disconnection or failure. |
| Low Quiescent Current | 2.5 mA typical operating current extends battery life in always-on display backlight applications. |
Applications
| Smartphone Backlight | Digital Camera Flash |
|---|---|
Use Scenario: Driving 3–4 white LEDs in series for LCD backlight in space-constrained smartphones. IC Role / Device Role / Timing Role: Constant-current boost controller with 2.0 MHz switching and 15 V OVP. Use Value: Enables ultra-thin form factor using 22 µH inductor and 1 µF ceramic output capacitor, while protecting against LED open-circuit faults. | Use Scenario: Providing regulated current to high-brightness LED flash array in compact digital cameras. IC Role / Device Role / Timing Role: High-efficiency boost driver supporting PWM dimming via EN pin for adjustable flash intensity. Use Value: Delivers >90% efficiency at 20 mA output with <1 µA shutdown current, preserving battery charge between photo captures. |
| GPS Navigation Display | IP Phone Keypad Illumination |
Use Scenario: Powering monochrome or color LCD backlight in automotive-grade GPS units operating from 12 V supply rails. IC Role / Device Role / Timing Role: Wide-input (2.5–10 V), thermally robust LED driver with –40°C to +125°C junction rating. Use Value: Maintains stable LED brightness across vehicle temperature extremes without derating or thermal shutdown. | Use Scenario: Illuminating membrane keypad LEDs in enterprise IP phones powered from PoE-derived 5 V rails. IC Role / Device Role / Timing Role: Low-noise, ceramic-capacitor-compatible boost converter with EN-controlled on/off sequencing. Use Value: Eliminates audible coil whine and ensures clean power delivery during voice call sessions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar white LED driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MIC2293-34YML-TR | Same 2.0 MHz frequency and package, but 34 V OVP threshold instead of 15 V. | Suitable for 6–8 LED strings requiring higher output voltage; not safe for 4-LED designs due to OVP margin violation. | Select only when output voltage exceeds 12 V and fault protection must cover full string dropout. |
| TPS61061DRVR | 1.4 MHz switching, 28 V OVP, no internal Schottky diode (requires external), 1.25 V feedback reference. | Requires external rectifier and higher-value sense resistor; less compact than MIC2293-15YML-TR. | Choose if system already uses TI ecosystem or requires adjustable OVP via external divider. |
Compared with MIC2293-34YML-TR and TPS61061DRVR, the MIC2293-15YML-TR offers optimal balance of size, integration (internal Schottky), and precise 15 V OVP for 4-LED backlighting-reducing component count by two parts and enabling smaller inductors than lower-frequency alternatives.
Availability
MIC2293-15YML-TR is available at Aetrix Electronics and suitable for smartphone backlighting, digital camera flash circuits, GPS navigation displays, and IP phone keypad illumination requiring stable component supply across production lifecycles.
Supply support for MIC2293-15YML-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
Microchip Technology is a global provider of microcontrollers, analog, FPGA, and timing solutions, with leadership in embedded control and power management ICs.
The MIC2292/93 product line was designed specifically for high-efficiency, space-constrained white LED backlighting in portable consumer electronics-emphasizing integration, thermal performance, and fault protection.
FAQ
What is the exact OVP threshold voltage for MIC2293-15YML-TR?
The MIC2293-15YML-TR has a guaranteed OVP threshold of 13 V (min), 14 V (typical), and 16 V (max) under standard operating conditions. This 15 V nominal rating is factory-trimmed and tested per DS20006598A-page 4 Electrical Characteristics table, ensuring reliable open-circuit protection for 4-LED strings without overdesigning output capacitors.
Does MIC2293-15YML-TR require an external Schottky diode?
No, the MIC2293-15YML-TR integrates a Schottky diode rated for 34 V reverse voltage and 150 mA forward current (0.8 V typical drop at 150 mA). This eliminates the need for an external diode, reducing bill-of-materials count and PCB footprint-confirmed in DS20006598A-page 1 Features and page 10 Functional Description.
Can MIC2293-15YML-TR drive more than four white LEDs in series?
Driving more than four white LEDs (typically >12 V total VF) risks exceeding the 15 V OVP threshold during transient or fault conditions. While the IC can regulate up to 34 V output, the -15 variant's OVP is fixed at 15 V; for 6–8 LED strings, use MIC2293-34YML-TR instead to maintain safe fault margin per DS20006598A-page 11 Section 4.2.
What is the recommended inductor value for a 3-LED smartphone backlight using MIC2293-15YML-TR?
For a 3-LED string (≈9 V VF) from a 3.6 V Li-ion source, Microchip recommends a 15 µH inductor (e.g., Murata LQH43MN150K21) per DS20006598A-page 12 Table 5-1. This value balances peak switch current, efficiency (>88% per Figure 2-2), and physical size in 0805 or 1008 footprints.
How does MIC2293-15YML-TR support PWM dimming?
The MIC2293-15YML-TR supports PWM dimming via its EN pin: applying a 100 Hz–10 kHz logic-level PWM signal directly toggles regulation on/off, delivering full LED current during active cycles and zero current during inactive cycles. This method achieves high efficiency and flicker-free dimming without altering the 95 mV feedback reference-detailed in DS20006598A-page 10 Section 4.1.
MIC2293-15YML-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:
- -
- Current - Output / Channel:
- 750mA (Switch)
- Frequency:
- 2MHz
- Dimming:
- Analog, PWM
- Applications:
- Backlight
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-MLF® (2x2)
MIC2293-15YML-TR FAQ
1.How can I place an order for MIC2293-15YML-TR through Aetrix?
Please submit a Request for Quotation (RFQ) for MIC2293-15YML-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 MIC2293-15YML-TR reliable?
The price and inventory of MIC2293-15YML-TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MIC2293-15YML-TR is usually 5 days.
3.What payment methods are accepted for MIC2293-15YML-TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MIC2293-15YML-TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MIC2293-15YML-TR?
MIC2293-15YML-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MIC2293-15YML-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 MIC2293-15YML-TR?
For technical support, including MIC2293-15YML-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MIC2293-15YML-TR requirements.
6.How does Aetrix verify that MIC2293-15YML-TR is sourced from the original manufacturer or authorized distributors?
All MIC2293-15YML-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 MIC2293-15YML-TR meets industry standards.
7.What is the process for return or replacement of MIC2293-15YML-TR?
All MIC2293-15YML-TR units undergo pre-shipment inspection (PSI). If there is an issue with MIC2293-15YML-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 MIC2293-15YML-TR part is unused and in its original packaging.
Return procedure for MIC2293-15YML-TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MIC2293-15YML-TR Tags
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BCR402RE6327HTSA1
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BCR430UXTSA2
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BCR420UE6433HTMA1
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BCR420UE6327HTSA1
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BCR421UE6327HTSA1
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LYT1604D-TL
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HV9910CLG-G
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CL2N8-G
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BCR420UW6-7
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BCR420UFD-7
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