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Microchip Technology MIC2292-34YML-TR
- Part No.:
- MIC2292-34YML-TR
- Manufacturer:
- Microchip Technology
- Category:
- LED Drivers
- Package:
- 8-VFDFN Exposed Pad, 8-MLF®
- Datasheet:
-
MIC2292-34YML-TR.pdf
- Description:
- IC LED DRVR RGLTR PWM 750MA 8MLF
- Quantity:
- Payment:
- Shipping:
Inventory:4,196
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Product details
Overview
MIC2292-34YML-TR from Microchip Technology is a high-frequency PWM boost regulator IC optimized for constant-current white LED driver applications, featuring 1.6 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 handheld backlighting systems.
For engineers reviewing the MIC2292-34YML-TR datasheet, MIC2292-34YML-TR pinout, MIC2292-34YML-TR application, or MIC2292-34YML-TR equivalent, this page provides verified technical context, real-world design meaning of key specs, validated DFN-8 pin functions, application-specific implementation guidance, and two confirmed alternative parts with documented functional and application differences.
Technical Context
The MIC2292-34YML-TR implements constant-frequency current-mode PWM control with a dedicated 1.6 MHz oscillator, slope compensation ramp generator, and gm error amplifier referenced to 95 mV feedback voltage. Its bipolar output transistor and integrated Schottky diode enable efficient single-stage boost conversion without external rectification.
It supports both PWM dimming via EN pin and continuous analog dimming via FB pin voltage injection, with built-in open-circuit protection triggered by OVP monitoring at 34V. The device uses ceramic output capacitors and requires only four external components for full LED driver operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Switching Frequency | 1.6 MHz - Enables use of small 2.2–22 µH inductors and avoids RF interference in cellular bands. |
| Output OVP Threshold | 34 V - Protects against LED open-circuit failure in high-series-count LED strings (e.g., ≥7 white LEDs). |
| Feedback Voltage | 95 mV ±5% - Sets LED current via external sense resistor (ILED = 95 mV / RFB); low reference minimizes power loss. |
| 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 typ - Sustains peak inductor current for driving up to 8-series white LEDs at 20 mA. |
| Junction Temp Range | –40°C to +125°C - Qualified for automotive cabin and industrial portable equipment environments. |
| Shutdown Current | <1 µA - Enables ultra-low-power standby in battery-powered devices with long shelf life. |
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 node / OVP sense | Connects to output capacitor and LED anode string; monitors output voltage for 34V OVP clamp activation. |
| 2: VIN | Power input | Accepts 2.5–10V DC input; supplies internal circuitry and switch driver; UVLO triggers below 2.1V. |
| 3: EN | Enable control input | Logic HIGH (>1.5V) enables regulation; logic LOW disables switching and reduces supply current to <1 µA. |
| 4, 8: AGND/PGND | Analog & power ground | Separate GND pins minimize noise coupling between feedback path (AGND) and high-di/dt switch return (PGND). |
| 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 feedback input | Senses voltage across external RFB; 95 mV reference sets LED current; supports analog dimming via DC voltage injection. |
| 7: SW | Switch node | Internal bipolar transistor collector; connects to inductor; swings from ~0V to >34V during operation. |
| EP | Thermal pad / GND | Exposed copper pad on bottom; must be soldered to PCB thermal plane for θJA = 93°C/W and reliable 125°C operation. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated Schottky diode | Eliminates need for external 34V-rated rectifier, reducing BOM count and board area in space-constrained designs. |
| 34V output OVP | Prevents destructive overvoltage during LED string open-circuit faults-critical for reliability in portable displays. |
| Stable with ceramic capacitors | Enables use of low-ESR, miniature 0805/0603 MLCCs instead of bulkier electrolytics or tantalums. |
| 1.6 MHz fixed-frequency PWM | Permits sub-10 mm² total solution size; avoids GSM/UMTS IF bands (e.g., 188–192 MHz) in RF-sensitive devices. |
| Two dimming modes | EN-pin PWM dimming (100 Hz–10 kHz) and FB-pin analog dimming support flexible brightness control architectures. |
Applications
| Smartphone Backlight | Digital Camera Flash |
|---|---|
Use Scenario: Driving 4–6 series white LEDs in a 5.5-inch OLED display backlight with dynamic contrast control. IC Role / Device Role / Timing Role: Constant-current boost controller regulating LED current via FB pin; 1.6 MHz switching ensures minimal EMI near cellular receivers. Use Value: 34V OVP protects against single-LED open failure in multi-string configurations; internal Schottky reduces component count by one. | Use Scenario: High-brightness flash illumination for 12-megapixel CMOS image sensors in compact point-and-shoot cameras. IC Role / Device Role / Timing Role: Boost converter delivering 300 mA pulsed current to LED array; EN pin accepts microcontroller-generated PWM for precise exposure timing. Use Value: <1 µA shutdown current extends battery life between photo captures; 750 mA switch limit supports short-duration 500 mA peak pulses. |
| IP Phone Display | Portable Medical Monitor |
Use Scenario: Powering monochrome LCD backlight with uniform brightness across temperature range (–20°C to +60°C ambient). IC Role / Device Role / Timing Role: Fixed-frequency current source maintaining ±1% line/load regulation; FB loop compensates for LED forward voltage drift. Use Value: –40°C to +125°C junction rating ensures stable operation under industrial temperature cycling; 95 mV reference minimizes sense resistor power dissipation. | Use Scenario: Driving status indicator LEDs and low-power OLED segments in battery-operated patient vital sign monitors. IC Role / Device Role / Timing Role: Dual-role power IC providing regulated LED current and enabling low-noise analog sensing paths via separate AGND/PGND pins. Use Value: Ceramic-capacitor stability eliminates electrolytic aging concerns in 10-year medical device lifecycles; 2 mm × 2 mm DFN fits tight front-panel layouts. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar white LED driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MIC2292-15YML-TR | Same 1.6 MHz frequency and package, but 15V OVP threshold instead of 34V. | Optimized for ≤4-series LED strings (≤12V typical); lower OVP allows smaller, cheaper output capacitors and diodes. | Select when driving fewer LEDs and cost-sensitive BOM optimization is prioritized over fault tolerance. |
| TPS61061DRVR | 1.2 MHz switching, 28V max output, no integrated Schottky; requires external diode. | Lacks OVP and internal rectifier; needs additional components for same protection level and footprint efficiency. | Choose if TI ecosystem alignment or specific 1.2 MHz EMI profile is required-accept higher BOM count and reduced fault coverage. |
Compared with MIC2292-15YML-TR, the MIC2292-34YML-TR trades tighter OVP margin for broader LED string compatibility and enhanced open-circuit robustness; versus TPS61061DRVR, it delivers superior integration (Schottky + OVP) and higher switching frequency in identical 2×2 mm area.
Availability
MIC2292-34YML-TR is available at Aetrix Electronics and suitable for smartphone backlighting, digital camera flash circuits, IP phone displays, and portable medical monitor LED drivers requiring stable component supply and long-term production continuity.
Supply support for MIC2292-34YML-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 is a global provider of microcontrollers, analog, FPGA, and mixed-signal solutions, with leadership in power management and LED driver ICs for portable electronics.
The MIC2292 product line delivers high-frequency, integrated boost LED drivers targeting space-constrained, battery-powered visual interfaces where efficiency, reliability, and minimal external component count are critical.
FAQ
What is the maximum LED string voltage supported by MIC2292-34YML-TR?
The MIC2292-34YML-TR features 34V output overvoltage protection, allowing safe operation with LED strings up to approximately 30V nominal output (e.g., 7–8 white LEDs at 3.2V each). The internal switch and OVP circuit are rated to clamp at 34V, preventing damage during open-circuit faults. This makes MIC2292-34YML-TR suitable for higher-series-count backlighting where MIC2292-15YML-TR would not suffice.
Does MIC2292-34YML-TR require an external Schottky diode?
No, MIC2292-34YML-TR integrates a Schottky diode rated for 34V reverse voltage and 150 mA forward current, eliminating the need for an external rectifier. This reduces bill-of-materials count, PCB area, and potential layout errors. The internal diode's 0.8V typical forward drop at 150 mA is specified in the datasheet and directly supports efficient boost operation in MIC2292-34YML-TR designs.
How does the feedback voltage of 95 mV affect LED current accuracy in MIC2292-34YML-TR?
The MIC2292-34YML-TR uses a precision 95 mV ±5% internal reference at the FB pin to set LED current via ILED = 95 mV / RFB. This low reference voltage minimizes power loss across the sense resistor while maintaining ±1% load regulation and <0.5% line regulation. Accuracy is preserved across –40°C to +125°C due to on-die trimming, making MIC2292-34YML-TR suitable for thermally demanding portable applications.
Can MIC2292-34YML-TR be used with ceramic output capacitors?
Yes, MIC2292-34YML-TR is explicitly characterized and stabilized for use with ceramic output capacitors-no electrolytic or tantalum types required. Its control loop is designed for low-ESR MLCCs (e.g., 0.22–2.2 µF in 0805/0603 packages), enabling compact, high-reliability designs. This ceramic compatibility is confirmed across all operating conditions in the official DS20006598A datasheet.
What dimming methods are supported by MIC2292-34YML-TR?
MIC2292-34YML-TR supports two independent dimming methods: (1) PWM dimming via the EN pin (100 Hz–10 kHz), turning the entire regulator on/off, and (2) analog dimming via DC voltage injection into the FB pin, linearly scaling LED current. Both are fully documented in the functional description section of the MIC2292-34YML-TR datasheet and do not require external op-amps or complex circuitry.
MIC2292-34YML-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:
- 1.6MHz
- Dimming:
- Analog, PWM
- Applications:
- Backlight
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-MLF® (2x2)
MIC2292-34YML-TR FAQ
1.How can I place an order for MIC2292-34YML-TR through Aetrix?
Please submit a Request for Quotation (RFQ) for MIC2292-34YML-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 MIC2292-34YML-TR reliable?
The price and inventory of MIC2292-34YML-TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MIC2292-34YML-TR is usually 5 days.
3.What payment methods are accepted for MIC2292-34YML-TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MIC2292-34YML-TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MIC2292-34YML-TR?
MIC2292-34YML-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MIC2292-34YML-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 MIC2292-34YML-TR?
For technical support, including MIC2292-34YML-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MIC2292-34YML-TR requirements.
6.How does Aetrix verify that MIC2292-34YML-TR is sourced from the original manufacturer or authorized distributors?
All MIC2292-34YML-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 MIC2292-34YML-TR meets industry standards.
7.What is the process for return or replacement of MIC2292-34YML-TR?
All MIC2292-34YML-TR units undergo pre-shipment inspection (PSI). If there is an issue with MIC2292-34YML-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 MIC2292-34YML-TR part is unused and in its original packaging.
Return procedure for MIC2292-34YML-TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MIC2292-34YML-TR Tags
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BCR402RE6327HTSA1
Infineon Technologies
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BCR430UXTSA2
Infineon Technologies
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BCR420UE6433HTMA1
Infineon Technologies
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BCR420UE6327HTSA1
Infineon Technologies
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BCR421UE6327HTSA1
Infineon Technologies
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LYT1604D-TL
Power Integrations
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HV9910CLG-G
Microchip Technology
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CL2N8-G
Microchip Technology
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BCR420UW6-7
Diodes Incorporated
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BCR421UW6-7
Diodes Incorporated
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BCR420UFD-7
Diodes Incorporated
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BCR421UFD-7
Diodes Incorporated
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