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Microchip Technology MIC2293-34YML-TR
- Part No.:
- MIC2293-34YML-TR
- Manufacturer:
- Microchip Technology
- Category:
- LED Drivers
- Package:
- 8-VFDFN Exposed Pad, 8-MLF®
- Datasheet:
-
MIC2293-34YML-TR.pdf
- Description:
- IC LED DRVR RGLTR PWM 750MA 8MLF
- Quantity:
- Payment:
- Shipping:
Inventory:8,222
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Product details
Overview
MIC2293-34YML-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, 34V output overvoltage protection (OVP), internal Schottky diode, and 500 mA switch current rating. It operates from 2.5V to 10V input and delivers stable LED current in compact backlighting systems for portable electronics.
For engineers reviewing the MIC2293-34YML-TR datasheet, MIC2293-34YML-TR pinout, MIC2293-34YML-TR application, or MIC2293-34YML-TR equivalent, key selection criteria include OVP threshold (34V), feedback voltage (95 mV), thermal performance (–40°C to +125°C junction), and DFN-8 package compatibility with ceramic output capacitors.
Technical Context
The MIC2293-34YML-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 output transistor supports up to 500 mA peak switch current and integrates a Schottky diode rated for 34V reverse voltage.
It features dual-level OVP monitoring (34V option), undervoltage lockout (2.1 V typical), and overtemperature shutdown (150°C threshold). The device uses external FB resistor to set LED current via ILED = 95 mV / RFB, enabling precise constant-current regulation across input and load variations.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Switching Frequency | 2.0 MHz - Enables use of small inductors & ceramic capacitors; avoids RF interference in IF bands. |
| OVP Threshold | 34 V - Clamps output during open-circuit LED failure; allows selection of lower-voltage-rated external components. |
| Feedback Voltage | 95 mV ±5% - Sets LED current via external resistor; enables accurate constant-current regulation independent of VIN. |
| 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. |
| Switch Current Limit | 750 mA typical - Limits peak inductor current; ensures safe operation under transient or short-circuit conditions. |
| Junction Temp Range | –40°C to +125°C - Qualified for automotive cabin, industrial, and extended-temperature portable applications. |
| Shutdown Current | <1 µA - Minimizes battery drain in standby mode; critical for always-on or low-power portable devices. |
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 34V OVP clamp activation. |
| 2 (VIN) | Power Input | Accepts 2.5–10 V supply; feeds internal bias circuitry and switch driver; includes UVLO detection. |
| 3 (EN) | Enable Control | Logic-high (>1.5 V) enables regulation; logic-low (<0.4 V) disables switching and reduces VIN current to <1 µA. |
| 4, 8 (AGND/PGND) | Analog & Power Ground | Separate AGND (pin 4) and PGND (pin 8) reduce noise coupling; both connect to system ground and EP. |
| 5 (NC) | No Connect | Internally unconnected; must be left floating or tied to GND per layout best practices. |
| 6 (FB) | Current Sense Input | Senses voltage across external RFB; regulates LED current to ILED = 95 mV / RFB. |
| 7 (SW) | Switch Node | Connects to inductor and internal bipolar transistor collector; carries high dv/dt switching waveform. |
| 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 external diode; reduces BOM count, board area, and forward drop losses (0.8 V @ 150 mA). |
| Stable with Ceramic Capacitors | Enables use of low-ESR, miniature MLCCs instead of larger electrolytics-critical for space-constrained mobile designs. |
| PWM Dimming Support | EN pin accepts 100 Hz–10 kHz PWM signal for high-efficiency brightness control without analog current variation. |
| Open-Circuit Protection | Dedicated 34V OVP circuit prevents SW node overvoltage during LED string disconnection or open failure. |
| Low Quiescent Current | 2.5 mA typical operating current extends battery life in always-on display backlight applications. |
Applications
| Smartphone Backlighting | Digital Camera Flash |
|---|---|
Use Scenario: Driving 4–6 series white LEDs in ultra-thin smartphone displays requiring uniform brightness and minimal EMI. IC Role / Device Role / Timing Role: Constant-current boost controller with 2.0 MHz switching and 34V OVP to sustain LED string voltage during dimming transients. Use Value: Enables compact layout using 22 µH inductor and 1 µF ceramic output cap; eliminates need for external Schottky diode. | Use Scenario: Providing high-intensity, brief-duration flash illumination in compact digital cameras with single-cell Li-ion power. IC Role / Device Role / Timing Role: High-efficiency boost converter delivering regulated current to parallel LED strings during camera shutter event. Use Value: 500 mA switch rating and 34V OVP support rapid charge/discharge cycles without overvoltage stress on LEDs or IC. |
| IP Phone Display | Portable Medical Monitor |
Use Scenario: Powering monochrome or color LCD backlights in enterprise IP phones operating continuously from PoE or wall adapter. IC Role / Device Role / Timing Role: Primary LED driver IC with EN-controlled PWM dimming and thermal shutdown for reliable 24/7 operation. Use Value: –40°C to +125°C junction rating ensures stability in uncontrolled office environments; <1 µA shutdown current minimizes standby loss. | Use Scenario: Illuminating high-resolution OLED or TFT displays in handheld diagnostic tools powered by rechargeable batteries. IC Role / Device Role / Timing Role: Precision current source for medical-grade display backlighting requiring consistent luminance and low ripple. Use Value: 0.5% line/load regulation and 95 mV reference ensure stable LED current across battery discharge curve (3.0–4.2 V). |
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 and DFN-8 package, but 15V OVP threshold instead of 34V. | Suitable for ≤4-LED strings (≤12V nominal); requires higher-voltage external components for 6+ LED configurations. | Select when output voltage headroom is limited and OVP margin can be reduced to optimize cost/size. |
| TPS61165DRVR | 2.2 MHz switching, 40V OVP, integrated MOSFET (not bipolar), 1.2 A switch current, no internal Schottky. | Supports higher LED counts and longer strings; requires external Schottky diode and different compensation network. | Choose for higher output power or where MOSFET efficiency outweighs BOM simplicity of MIC2293-34YML-TR. |
Compared with MIC2293-15YML-TR, the MIC2293-34YML-TR provides greater fault tolerance for open-circuit LED failures in high-string-count designs; versus TPS61165DRVR, it offers lower component count and simpler layout at the expense of maximum output current and voltage flexibility.
Availability
MIC2293-34YML-TR is available at Aetrix Electronics and suitable for smartphone backlighting, portable medical monitor displays, IP phone interfaces, and digital camera flash circuits requiring stable component supply, long-lifecycle assurance, and RoHS-compliant packaging.
Supply support for MIC2293-34YML-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 Inc. is a leading provider of microcontrollers, analog, FPGA, and timing solutions, with global design, manufacturing, and support infrastructure.
The MIC2292/93 product line was designed specifically for high-frequency, space-constrained white LED backlighting in portable consumer electronics, emphasizing integration, thermal robustness, and OVP flexibility.
FAQ
What is the OVP threshold of the MIC2293-34YML-TR?
The MIC2293-34YML-TR has a fixed 34V output overvoltage protection threshold, as indicated by the "34" in its part number. This OVP level clamps the output during LED open-circuit faults, protecting both the IC and external components. It is factory-configured and not adjustable; the alternative MIC2293-15YML-TR offers 15V OVP for lower-voltage LED strings.
Can the MIC2293-34YML-TR drive more than six white LEDs in series?
Yes-the MIC2293-34YML-TR supports output voltages up to 34V, sufficient for driving up to eight standard white LEDs (3.2–3.6 V each) in series under typical conditions. However, actual maximum LED count depends on input voltage, forward voltage tolerance, and temperature derating; design validation with worst-case VF and minimum VIN is required.
Does the MIC2293-34YML-TR require an external Schottky diode?
No-the MIC2293-34YML-TR integrates a Schottky diode rated for 34V reverse voltage and 150 mA forward current (0.8 V typical drop). This eliminates the need for an external diode, reducing bill-of-materials count, PCB area, and conduction losses in typical LED driver configurations.
How is LED current set on the MIC2293-34YML-TR?
LED current is set by an external resistor (RFB) connected between the FB pin and ground, using the formula ILED = 95 mV / RFB. For example, a 4.75 Ω resistor sets 20 mA LED current. The 95 mV feedback reference is trimmed to ±5% and remains stable across temperature and line/load variations.
What package type and thermal characteristics does the MIC2293-34YML-TR use?
The MIC2293-34YML-TR uses a 2 mm × 2 mm, 8-pin DFN-ML package with exposed thermal pad (EP). Its junction-to-ambient thermal resistance is 93°C/W with proper PCB copper pour. The device operates from –40°C to +125°C junction temperature and includes overtemperature shutdown at 150°C with 10°C hysteresis.
MIC2293-34YML-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)
MIC2293-34YML-TR FAQ
1.How can I place an order for MIC2293-34YML-TR through Aetrix?
Please submit a Request for Quotation (RFQ) for MIC2293-34YML-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 MIC2293-34YML-TR reliable?
The price and inventory of MIC2293-34YML-TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MIC2293-34YML-TR is usually 5 days.
3.What payment methods are accepted for MIC2293-34YML-TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MIC2293-34YML-TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MIC2293-34YML-TR?
MIC2293-34YML-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MIC2293-34YML-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 MIC2293-34YML-TR?
For technical support, including MIC2293-34YML-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MIC2293-34YML-TR requirements.
6.How does Aetrix verify that MIC2293-34YML-TR is sourced from the original manufacturer or authorized distributors?
All MIC2293-34YML-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 MIC2293-34YML-TR meets industry standards.
7.What is the process for return or replacement of MIC2293-34YML-TR?
All MIC2293-34YML-TR units undergo pre-shipment inspection (PSI). If there is an issue with MIC2293-34YML-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 MIC2293-34YML-TR part is unused and in its original packaging.
Return procedure for MIC2293-34YML-TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MIC2293-34YML-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
Diodes Incorporated
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BCR421UW6-7
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BCR420UFD-7
Diodes Incorporated
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BCR421UFD-7
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