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Microchip Technology MIC2292-34BML-TR
- Part No.:
- MIC2292-34BML-TR
- Manufacturer:
- Microchip Technology
- Category:
- LED Drivers
- Package:
- 8-VFDFN Exposed Pad, 8-MLF®
- Datasheet:
-
MIC2292-34BML-TR.pdf
- Description:
- IC LED DRVR RGLTR PWM 750MA 8MLF
- Quantity:
- Payment:
- Shipping:
Inventory:3,759
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Product details
Overview
MIC2292-34BML-TR from Microchip Technology is a high-frequency PWM boost regulator optimized for constant-current white LED driver applications, featuring 1.6 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 electronics.
For engineers reviewing the MIC2292-34BML-TR datasheet, MIC2292-34BML-TR pinout, MIC2292-34BML-TR application, or MIC2292-34BML-TR equivalent, key selection considerations include OVP threshold (34V), thermal performance in DFN-8 (θJA = 93°C/W), shutdown current (<1 µA), and compatibility with ceramic output capacitors in space-constrained LED driver designs.
Technical Context
The MIC2292-34BML-TR implements constant-frequency current-mode PWM control using an internal 500 mA bipolar switch and slope-compensated current amplifier. Its 1.6 MHz oscillator enables small external inductors and avoids RF interference bands.
It integrates dual protection mechanisms: undervoltage lockout (VUVLO = 2.1 V typ) and overtemperature shutdown (150°C threshold), while the dedicated 34V OVP option monitors output voltage independently via the OUT pin to clamp fault conditions before SW pin overstress occurs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Switching Frequency | 1.6 MHz - enables use of sub-10 µH inductors and avoids GSM/ISM RF bands |
| Feedback Voltage | 95 mV ±5% - sets LED current via external sense resistor (ILED = 95 mV / RFB) |
| OVP Threshold | 34V - protects against open-circuit LED failure by clamping output before SW exceeds 34V rating |
| Input Voltage Range | 2.5V to 10V - 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 power density |
Pinout & Package
The MIC2292-34BML-TR is housed in a 2 mm × 2 mm, 0.9 mm height, 8-pin DFN package (ML suffix) with exposed thermal pad (EP). The package uses fused lead frame construction and is RoHS compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT) | Output & OVP Sense | Connects to output capacitor and LED anodes; directly monitors output for 34V overvoltage protection |
| 2 (VIN) | Power Input | Accepts 2.5V–10V supply; feeds internal bias and switch driver circuitry |
| 3 (EN) | Enable Control | Logic-high (>1.5 V) enables regulation; logic-low disables switching and reduces VIN current 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 | Connects to LED cathode/sense resistor; regulates LED current to maintain 95 mV at this node |
| 7 (SW) | Switch Node | Drives external inductor; connects to internal 500 mA bipolar transistor collector and Schottky anode |
| EP | Thermal Pad | Exposed copper pad for PCB thermal conduction; must be soldered to solid GND plane for θJA = 93°C/W |
Key Features
| Feature | Design Value |
|---|---|
| Internal Schottky Diode | Eliminates need for external rectifier, reducing BOM count and board area in LED boost topologies |
| Stable with Ceramic Capacitors | Enables use of low-ESR, miniature MLCCs instead of bulkier electrolytics - critical for thin mobile form factors |
| 15V/34V OVP Options | Selectable protection level matches LED string voltage; 34V variant supports ≥10-white-LED strings (≈30V typical) |
| Line & Load Regulation | <1% - maintains consistent LED brightness across battery discharge (3V–5V VIN) and varying load (5–20 mA IOUT) |
| UVLO and Thermal Shutdown | Prevents malfunction during brown-out or thermal overload; hysteresis ensures clean recovery after fault clearance |
Applications
| Cell Phone Backlighting | Digital Camera Flash |
|---|---|
Use Scenario: Driving 3–6 white LEDs in ultra-thin smartphone displays with dynamic brightness control. IC Role / Device Role / Timing Role: Constant-current boost controller regulating LED current via FB pin; 1.6 MHz PWM enables compact LC filter design. Use Value: 95 mV reference and <1% regulation ensure uniform luminance across display zones during battery voltage sag. | Use Scenario: Providing high-intensity, short-duration flash illumination in compact digital cameras and camcorders. IC Role / Device Role / Timing Role: High-efficiency boost driver delivering up to 34V to parallel LED strings during strobe activation. Use Value: 34V OVP prevents damage during open-circuit flash LED failure, improving field reliability without external protection components. |
| GPS System Display | MP3 Player UI Lighting |
Use Scenario: Powering always-on, sunlight-readable LCD backlights in automotive-grade GPS navigation units. IC Role / Device Role / Timing Role: Wide-input (2.5V–10V) boost regulator sustaining LED current across cold-crank (6V) and alternator (14V) transients. Use Value: –40°C to +125°C junction rating and UVLO ensure reliable startup and operation in vehicle cabin temperature extremes. | Use Scenario: Illuminating segmented OLED or TFT UI elements in portable audio players with battery life optimization. IC Role / Device Role / Timing Role: Low-quiescent-current (2.5 mA typ) LED driver enabling >100-hour standby with backlight enabled. Use Value: <1 µA shutdown current extends battery runtime during playback pause or menu navigation idle states. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar white LED boost driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MIC2292-15YML-TR | Same 1.6 MHz frequency and DFN-8 package, but 15V OVP threshold | Suitable only for ≤4-LED strings (≤12V typical); lower OVP reduces capacitor voltage rating requirements | Select when output voltage headroom is constrained and 34V protection is unnecessary |
| TPS61061DRVR | 1.2 MHz switching, 28V OVP, no integrated Schottky; requires external diode | Lacks internal rectifier - increases component count and footprint; lower OVP limits max LED string count | Choose if TI ecosystem preference exists and external diode integration is acceptable for cost-sensitive designs |
Compared with MIC2292-15YML-TR, the MIC2292-34BML-TR supports longer LED strings and higher output voltage margin; versus TPS61061DRVR, it delivers reduced BOM count and smaller solution size due to integrated Schottky and tighter OVP tolerance.
Availability
MIC2292-34BML-TR is available at Aetrix Electronics and suitable for cell phone backlighting, digital camera flash circuits, GPS display drivers, MP3 player UI lighting, and industrial handheld device illumination requiring stable component supply and long-term production continuity.
Supply support for MIC2292-34BML-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 semiconductor company specializing in microcontrollers, analog devices, FPGAs, and timing solutions, with emphasis on embedded control and power management.
The MIC2292 product line delivers high-frequency, constant-current LED drivers targeting space-constrained portable electronics where efficiency, thermal performance, and minimal external component count are critical.
FAQ
What is the OVP threshold for MIC2292-34BML-TR?
The MIC2292-34BML-TR features a fixed 34V overvoltage protection threshold, as indicated by the "34" in its part number. This OVP level is implemented via dedicated monitoring on the OUT pin and clamps output voltage to prevent SW node overstress during LED open-circuit faults. The 34V rating supports LED strings requiring up to ~30V nominal output, such as 10-white-LED configurations.
Does MIC2292-34BML-TR require an external Schottky diode?
No, the MIC2292-34BML-TR integrates a Schottky diode internally, eliminating the need for an external rectifier. This reduces bill-of-materials count, PCB footprint, and assembly cost. The internal diode has a typical forward drop of 0.8 V at 150 mA and supports reverse voltages up to 34V, matching the device's OVP rating.
What is the recommended inductor value for driving 6 white LEDs with MIC2292-34BML-TR?
For a 6-white-LED string (typical forward voltage ≈ 18–21 V), Microchip recommends a 10 µH inductor (e.g., Murata LQH43MN100K21) paired with a minimum 0.27 µF output capacitor. This combination balances efficiency (>85% typical), transient response, and physical size while maintaining stability with the MIC2292-34BML-TR's 1.6 MHz switching frequency and current-mode control architecture.
How does dimming work on MIC2292-34BML-TR?
The MIC2292-34BML-TR supports two dimming methods: PWM dimming via the EN pin (100 Hz–10 kHz), which toggles full LED current on/off, and continuous dimming via DC voltage injection into the FB pin through a series resistor. The latter allows dynamic intensity control using DAC or filtered PWM signals, enabling flicker-free operation above 10 kHz while preserving color consistency across brightness levels.
Is MIC2292-34BML-TR compatible with ceramic output capacitors?
Yes, the MIC2292-34BML-TR is explicitly designed to be stable with ceramic output capacitors - a key advantage over older boost controllers requiring electrolytic or tantalum types. Microchip specifies stability with 0.22 µF to 2.2 µF X5R/X7R MLCCs, enabling smaller, more reliable, and lower-ESR output filtering essential for portable LED applications.
MIC2292-34BML-TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-VFDFN Exposed Pad, 8-MLF®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- 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)
MIC2292-34BML-TR FAQ
1.How can I place an order for MIC2292-34BML-TR through Aetrix?
Please submit a Request for Quotation (RFQ) for MIC2292-34BML-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 MIC2292-34BML-TR reliable?
The price and inventory of MIC2292-34BML-TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MIC2292-34BML-TR is usually 5 days.
3.What payment methods are accepted for MIC2292-34BML-TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MIC2292-34BML-TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MIC2292-34BML-TR?
MIC2292-34BML-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MIC2292-34BML-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 MIC2292-34BML-TR?
For technical support, including MIC2292-34BML-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MIC2292-34BML-TR requirements.
6.How does Aetrix verify that MIC2292-34BML-TR is sourced from the original manufacturer or authorized distributors?
All MIC2292-34BML-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 MIC2292-34BML-TR meets industry standards.
7.What is the process for return or replacement of MIC2292-34BML-TR?
All MIC2292-34BML-TR units undergo pre-shipment inspection (PSI). If there is an issue with MIC2292-34BML-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 MIC2292-34BML-TR part is unused and in its original packaging.
Return procedure for MIC2292-34BML-TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MIC2292-34BML-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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BCR421UW6-7
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BCR420UFD-7
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BCR421UFD-7
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