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Microchip Technology MIC2293-24YML-TR
- Part No.:
- MIC2293-24YML-TR
- Manufacturer:
- Microchip Technology
- Category:
- LED Drivers
- Package:
- 8-VFDFN Exposed Pad, 8-MLF®
- Datasheet:
-
MIC2293-24YML-TR.pdf
- Description:
- IC LED DRVR RGLTR PWM 750MA 8MLF
- Quantity:
- Payment:
- Shipping:
Inventory:1,836
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Product details
Overview
MIC2293-24YML-TR from Microchip Technology is a high-frequency PWM boost regulator optimized for constant-current white LED driver applications, featuring 2.0 MHz switching frequency, 2.5V–10V input range, up to 34V output capability, internal Schottky diode, and 95 mV feedback reference voltage - deployed in compact backlighting systems for portable consumer electronics.
For engineers reviewing the MIC2293-24YML-TR datasheet, MIC2293-24YML-TR pinout, MIC2293-24YML-TR application, or MIC2293-24YML-TR equivalent, key selection criteria include OVP level (15V vs. 34V variants), thermal performance in 2 mm × 2 mm DFN-8, ceramic-capacitor compatibility, shutdown current (<1 µA), and LED current regulation accuracy (±5% VFB).
Technical Context
The MIC2293-24YML-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-stage boost conversion without external rectification.
It supports two OVP thresholds (15V or 34V) via dedicated package options - MIC2293-15YML-TR and MIC2293-34YML-TR - and includes undervoltage lockout (2.1 V typ), overtemperature shutdown (150°C threshold), and soft-start compatibility via FB pin injection.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Switching Frequency | 2.0 MHz - enables ultra-small external inductors and capacitors; avoids RF interference in cellular/Bluetooth bands. |
| 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. |
| Feedback Voltage | 95 mV ±5% - sets LED current via external sense resistor (ILED = 95 mV / RFB); enables precise constant-current regulation. |
| OVP Threshold | 15 V - protects output stage against open-LED fault; matches typical 4-LED string voltage (~12 V). |
| Shutdown Current | <1 µA - minimizes battery drain in standby; critical for always-on portable devices. |
| Junction Temp Range | –40°C to +125°C - ensures reliability in thermally constrained handheld enclosures and automotive ambient zones. |
| Package | 2 mm × 2 mm DFN-8 (ML) - surface-mount footprint with exposed pad for thermal dissipation; compatible with standard reflow profiles. |
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 voltage for 15 V overvoltage protection. |
| 2 (VIN) | Power Input | Accepts 2.5–10 V DC supply; feeds internal bias circuitry and switch driver. |
| 3 (EN) | Enable Control | Logic-high (>1.5 V) enables regulation; logic-low 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 | Unbonded die pad; must be left floating or tied to GND per layout guidelines - no internal connection. |
| 6 (FB) | Current Sense Input | Connects to LED cathode via sense resistor; 95 mV reference sets LED current (ILED = 95 mV / RFB). |
| 7 (SW) | Switch Node | Drives external inductor; connects internally to bipolar transistor collector and Schottky anode. |
| EP | Thermal Pad | Exposed copper pad on bottom; must be soldered to PCB thermal plane for θJA = 93°C/W performance. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated Schottky Diode | Eliminates need for external rectifier; reduces BOM count and board area while improving efficiency at light loads. |
| Ceramic Capacitor Stability | Stable with low-ESR MLCCs only - enables use of compact, high-reliability 0805/0603 output caps without tantalum or electrolytic alternatives. |
| Two OVP Options (15V/34V) | Selectable protection threshold allows optimal component rating trade-offs: 15 V OVP supports lower-voltage 4-LED strings with smaller, cheaper output capacitors. |
| Current-Mode PWM Control | Provides inherent cycle-by-cycle current limiting, fast transient response to LED load changes, and stable operation across wide duty cycles (up to 90%). |
| Ultra-Low Shutdown Current | <1 µA shutdown leakage extends battery life in always-off states - essential for IP phones and remote controls with infrequent wake events. |
Applications
| Smartphone Backlighting | Digital Camera Flash |
|---|---|
Use Scenario: Driving 3–4 white LEDs in parallel for LCD backlight in space-constrained smartphone bezels. IC Role / Device Role / Timing Role: Constant-current boost controller regulating LED brightness via EN pin PWM dimming at 1–5 kHz. Use Value: 2.0 MHz switching enables 4.7 µH inductor and 0.27 µF ceramic output cap - reducing solution size by >40% vs. 1.6 MHz alternatives. | Use Scenario: Providing short-duration, high-brightness flash illumination in compact digital cameras and action cams. IC Role / Device Role / Timing Role: High-efficiency boost converter delivering regulated 15 V to LED string during burst mode; enabled via microcontroller GPIO. Use Value: 15 V OVP option prevents overvoltage damage during open-circuit flash trigger events while allowing minimal 16 V-rated output capacitor selection. |
| IP Phone Display Backlight | Portable GPS System UI Lighting |
Use Scenario: Powering monochrome or color LCD backlight in enterprise VoIP handsets with strict standby power budgets. IC Role / Device Role / Timing Role: Always-on LED driver with EN-controlled shutdown during call idle periods; uses continuous dimming via FB pin DC voltage. Use Value: <1 µA shutdown current extends battery backup runtime beyond 72 hours; 95 mV VFB enables accurate 5–20 mA LED current setting across temperature. | Use Scenario: Illuminating high-contrast TFT display in outdoor GPS units subject to –20°C to +70°C ambient extremes. IC Role / Device Role / Timing Role: Robust boost LED driver operating across full –40°C to +125°C junction range; compensates for LED forward voltage drift with gm error amplifier. Use Value: Thermal design with EP pad sustains 20 mA LED current at +70°C ambient without derating; 2.5–10 V input accommodates aging alkaline battery discharge curve. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar white LED driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MIC2293-15YML-TR | Same 2.0 MHz frequency, identical pinout and package, but 15 V OVP (vs. 34 V in -24 variant) | Optimized for ≤4-LED strings; requires lower-voltage output capacitor (16 V rating) | Select when output voltage stays below 13 V under all conditions - reduces cost and size of external components. |
| TPS61165DRVR | 2.2 MHz switching, 36 V OVP, integrated 1.5 A MOSFET (vs. 500 mA bipolar), no internal Schottky | Supports higher LED current and longer strings; requires external Schottky diode | Choose for >20 mA LED strings or designs needing >30 V output; accepts larger inductor due to lower frequency tolerance. |
Compared with MIC2293-24YML-TR, the MIC2293-15YML-TR offers tighter OVP margin for low-string-count applications, while the TPS61165DRVR provides higher drive capability at the cost of added external components and reduced integration.
Availability
MIC2293-24YML-TR is available at Aetrix Electronics and suitable for smartphone backlighting, digital camera flash circuits, IP phone displays, and portable GPS UI lighting requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for MIC2293-24YML-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
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 delivers high-frequency, constant-current LED drivers targeting space- and efficiency-constrained portable backlighting and flash applications - emphasizing minimal external component count and thermal robustness.
FAQ
What is the OVP threshold for MIC2293-24YML-TR?
The MIC2293-24YML-TR features a 15 V overvoltage protection threshold, as indicated by the "24" in the part number (per Microchip's Product Identification System: "15" = 15 V OVP). This clamps output voltage during open-LED faults to protect the internal switch and external components. The 15 V OVP aligns with typical 4-LED white string voltages (~12 V), enabling use of lower-rated, smaller output capacitors.
Does MIC2293-24YML-TR require an external Schottky diode?
No, MIC2293-24YML-TR integrates a Schottky diode internally - confirmed in the General Description and Features sections of DS20006598A. This eliminates the need for an external rectifier, reducing bill-of-materials count, PCB area, and potential failure points. The internal diode supports up to 34 V reverse voltage and exhibits ~0.8 V forward drop at 150 mA.
What is the recommended inductor value for driving three white LEDs with MIC2293-24YML-TR?
For three-series white LEDs, Microchip recommends a 10 µH inductor (e.g., Murata LQH43MN100K21) per Table 5-1 in DS20006598A. This value balances efficiency (>85% at 20 mA), transient response, and physical size. Inductor saturation current must exceed 750 mA peak switch current, and DC resistance should be minimized to maintain thermal performance in the 2 mm × 2 mm DFN package.
How does MIC2293-24YML-TR achieve dimming control?
MIC2293-24YML-TR supports two dimming methods: PWM dimming via the EN pin (100 Hz–10 kHz) for high-efficiency on/off LED current control, and continuous dimming via DC voltage injection into the FB pin (e.g., from a DAC or filtered PWM), enabling smooth intensity adjustment without flicker. Both methods are detailed in Section 4.1 of DS20006598A and preserve the device's 95 mV feedback reference accuracy across temperature.
Is MIC2293-24YML-TR pin-compatible with MIC2292-15YML-TR?
Yes, MIC2293-24YML-TR is pin-compatible with MIC2292-15YML-TR - both use the same 2 mm × 2 mm DFN-8 (ML) package, identical pinout, and shared functional block diagram. The primary differences are switching frequency (2.0 MHz vs. 1.6 MHz) and OVP level (15 V vs. 15 V), making them direct drop-in replacements where frequency tolerance permits. Layout reuse is fully supported per Microchip's Package Outline documentation.
MIC2293-24YML-TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-VFDFN Exposed Pad, 8-MLF®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- 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)
MIC2293-24YML-TR FAQ
1.How can I place an order for MIC2293-24YML-TR through Aetrix?
Please submit a Request for Quotation (RFQ) for MIC2293-24YML-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 MIC2293-24YML-TR reliable?
The price and inventory of MIC2293-24YML-TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MIC2293-24YML-TR is usually 5 days.
3.What payment methods are accepted for MIC2293-24YML-TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MIC2293-24YML-TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MIC2293-24YML-TR?
MIC2293-24YML-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MIC2293-24YML-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 MIC2293-24YML-TR?
For technical support, including MIC2293-24YML-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MIC2293-24YML-TR requirements.
6.How does Aetrix verify that MIC2293-24YML-TR is sourced from the original manufacturer or authorized distributors?
All MIC2293-24YML-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 MIC2293-24YML-TR meets industry standards.
7.What is the process for return or replacement of MIC2293-24YML-TR?
All MIC2293-24YML-TR units undergo pre-shipment inspection (PSI). If there is an issue with MIC2293-24YML-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 MIC2293-24YML-TR part is unused and in its original packaging.
Return procedure for MIC2293-24YML-TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MIC2293-24YML-TR Tags
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