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Microchip Technology MIC2299-15YML-TR
- Part No.:
- MIC2299-15YML-TR
- Manufacturer:
- Microchip Technology
- Category:
- LED Drivers
- Package:
- 12-VFDFN Exposed Pad, 12-MLF®
- Datasheet:
-
MIC2299-15YML-TR.pdf
- Description:
- IC LED DRVR RGLTR ANALOG 12MLF
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
MIC2299-15YML-TR from Micrel is a 2MHz constant-frequency boost LED driver IC optimized for high-brightness white LED photoflash applications, delivering up to 3.5A switch current with 200mV feedback voltage and 15V over-voltage protection. It operates from 2.5V–10V input (1–2-cell Li-ion or 3–4-cell alkaline/NiMH), supports programmable torch/flash via BRT pin, and integrates internal bipolar power transistor in a 12-pin 3mm × 3mm MLF® package.
For engineers reviewing the MIC2299-15YML-TR datasheet, MIC2299-15YML-TR pinout, MIC2299-15YML-TR application, or MIC2299-15YML-TR equivalent, key selection criteria include its 2MHz fixed-frequency PWM architecture, 200mV ±10% VFB, 15V OVP threshold, 3.5A guaranteed switch current over temperature, and compatibility with compact 0.25in² designs for portable flash systems.
Technical Context
The MIC2299-15YML-TR implements peak current-mode PWM control with a 2MHz oscillator, slope compensation, and transconductance error amplifier to regulate LED current via external sense resistor. Its internal bipolar power transistor eliminates need for external high-side switch, while dedicated BRT and SS/DIM pins enable analog dimming, soft-start, and PWM brightness programming.
It features integrated over-voltage protection triggered by the OVP pin (15V threshold), under-voltage lockout (2.1V typical), thermal shutdown at 150°C, and externally programmable compensation via COMP pin. The device operates in continuous conduction mode up to ~90% duty cycle and supports discontinuous mode at light loads without instability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Switching Frequency | Fixed 2MHz - enables ultra-compact LC filter design and avoids AM-band interference. |
| Feedback Voltage (VFB) | 200mV ±10% - minimizes I2R loss in current-sense resistor, extending battery life. |
| OVP Threshold | 15V - protects output stage when LEDs disconnect or FB shorts; adjustable via resistor divider. |
| Input Voltage Range | 2.5V to 10V - supports direct operation from 1–2-cell Li-ion or 3–4-cell NiMH/alkaline batteries. |
| Switch Current Limit | 3.5A (guaranteed over temperature) - enables driving two 1A white LEDs in series for flash. |
| Shutdown Current | 1µA - ensures minimal battery drain during standby in portable devices. |
| Output Voltage Max | 30V - sets absolute upper limit for switch node; OVP clamps at 15V for this variant. |
| Junction Temp Range | –40°C to +125°C - qualified for harsh mobile and industrial ambient conditions. |
Pinout & Package
Package: 12-pin 3mm × 3mm leadless MLF® (MicroLeadFrame) with exposed thermal pad (EP). RoHS-compliant, Pb-free NiPdAu finish, halogen-free mold compound.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| BRT (Pin 1) | Brightness control input | Sets LED current from 20% to 100% via GND short or resistor; 10µA internal current source enables precise analog dimming. |
| SS/DIM (Pin 2) | Soft-start/dimming input | Connect capacitor to GND for controlled startup; clamp voltage to adjust reference and modulate LED current. |
| FB (Pin 3) | Current-sense feedback input | Connects to cathode of LED string; compares voltage across external RSENSE to 200mV reference to regulate ILED. |
| AGND (Pin 4) | Analog ground reference | Separate low-noise ground for FB, COMP, and BRT paths to prevent switching noise coupling into regulation loop. |
| PGND (Pins 5,6) | Power ground return | High-current return path for switch node and inductor; must be tied to EP and AGND at single point for stability. |
| SW (Pins 7,8) | Internal bipolar collector node | Connects to inductor and Schottky diode anode; handles peak currents up to 3.5A; requires low-inductance layout. |
| OVP (Pin 9) | Over-voltage protection input | Monitors output voltage; shuts down switch if >15V (or higher via divider); prevents damage during open-LED fault. |
| VIN (Pin 10) | Main supply input | Accepts 2.5V–10V DC; powers internal circuitry and bias network; requires local 2.2µF X5R/X7R ceramic decoupling. |
| EN (Pin 11) | Enable logic input | Logic-high (>1.5V) enables regulation; logic-low (<0.4V) disables switching and reduces IIN to 1µA. |
| COMP (Pin 12) | Compensation network node | Connects external RC (e.g., 620Ω + 33nF) to stabilize voltage loop; transconductance amplifier output. |
| EP (Pad) | Thermal & electrical ground | Exposed backside copper pad; must be soldered to large PCB ground plane for thermal dissipation (θJA = 60°C/W). |
Key Features
| Feature | Design Value |
|---|---|
| Programmable torch/flash mode | Single BRT pin configures 20% (torch) or 100% (flash) LED current without external logic. |
| 2MHz fixed-frequency PWM | Enables use of <1µH inductors and <10µF ceramics, reducing solution size to 0.25in² (1.6cm²). |
| 200mV feedback reference | Reduces power loss in sense resistor by 5× vs. 1V references, critical for battery runtime in flash applications. |
| Integrated OVP with 15V threshold | Prevents destructive overvoltage during LED open-circuit faults; configurable beyond 15V using resistor divider. |
| Externally programmable soft-start | Capacitor on SS/DIM pin controls ramp time (e.g., ~1.75ms with 33nF CCOMP), preventing inrush current stress. |
| –40°C to +125°C operation | Validated performance across full automotive and industrial temperature range without derating. |
Applications
| Cell Phone Flash | Digital Camera Flash |
|---|---|
|
Use Scenario: High-intensity photoflash for smartphone rear cameras requiring sub-500ms recharge and consistent luminance across battery voltage range. IC Role / Device Role / Timing Role: Constant-current boost regulator controlling two-series 1A white LEDs; provides 2MHz timing reference and current-loop regulation. Use Value: 200mV VFB maintains stable LED current from 3.0V–4.2V Li-ion, enabling >100 flash cycles per charge. |
Use Scenario: Compact DSLR or mirrorless camera auxiliary flash module needing reliable 3.5A pulsed output with thermal safety. IC Role / Device Role / Timing Role: Peak-current-mode PWM controller managing inductor energy transfer and LED current sensing via FB pin. Use Value: Guaranteed 3.5A switch current and 150°C thermal shutdown ensure safe 800mA pulse delivery even at 50°C ambient. |
| White LED Flashlight | PDA Photoflash |
|
Use Scenario: Tactical flashlight with dual-mode (torch/flash) output powered by 2-cell Li-ion, requiring minimal board area and low quiescent current. IC Role / Device Role / Timing Role: Programmable LED driver with BRT and EN pins enabling hardware-selectable brightness modes and instant on/off. Use Value: 1µA shutdown current extends shelf life; 2MHz operation allows use of tiny 2.2µH inductor and 4.7µF ceramic output cap. |
Use Scenario: Legacy PDA with integrated camera needing compact, low-cost flash solution compatible with aging 3.3V logic rails. IC Role / Device Role / Timing Role: Integrated boost converter with internal bipolar transistor eliminating external switch and simplifying BOM. Use Value: 2.5V minimum VIN supports operation down to depleted NiMH cells; UVLO at 2.1V prevents brownout-induced flicker. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LED flash driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX8630YETA+ | 2.5MHz fixed frequency, 1.25V VFB, 3.2A switch current, 16-pin QFN | Higher VFB increases sense resistor loss; smaller 2mm × 2mm package but requires more external components | Choose for higher switching frequency where board space is tighter, accepting reduced efficiency due to 1.25V VFB. |
| TPS61310DSKR | 2.5MHz, 200mV VFB, 3A switch current, 10-pin WSON, no BRT pin | Lacks dedicated brightness control pin; uses EN/PWM for dimming only; lower max switch current | Choose when analog torch/flash control is unnecessary and 3A peak suffices; benefits from identical low-VFB efficiency. |
Compared with MIC2299-15YML-TR, MAX8630YETA+ offers higher frequency but sacrifices battery runtime due to 6× higher sense loss, while TPS61310DSKR matches the 200mV VFB advantage but lacks integrated BRT functionality-requiring external DAC or MCU GPIO for torch mode.
Availability
MIC2299-15YML-TR is available at Aetrix Electronics and suitable for cell phone flash modules, digital camera auxiliary lighting, and portable white LED flashlights requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for MIC2299-15YML-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
Micrel Inc. was a U.S.-based semiconductor company specializing in power management, analog, and RF solutions before its acquisition by Microchip Technology in 2015. Known for high-reliability analog ICs and innovative packaging.
The MIC2299 product line was designed specifically for high-efficiency, high-current white LED photoflash drivers in space-constrained portable electronics, emphasizing low-VFB operation, integrated protection, and minimal external component count.
FAQ
What is the maximum output voltage supported by the MIC2299-15YML-TR?
The MIC2299-15YML-TR has an absolute maximum switch node rating of 34V, but its over-voltage protection (OVP) is factory-set to 15V. The output voltage can be raised beyond 15V using a resistor divider on the OVP pin-however, the switch node must never exceed 30V to avoid damage. Typical operating output ranges from VIN+1V up to VOVP.
How does the BRT pin control LED brightness in the MIC2299-15YML-TR?
The BRT pin on the MIC2299-15YML-TR sources a precise 10µA current. When pulled to GND, it sets VFB to 40mV (20% of nominal LED current); open-circuit yields 200mV (100%). Connecting a resistor (e.g., 50kΩ) sets intermediate levels-50kΩ produces 0.5V at BRT, resulting in 50% ILED. This enables hardware-based torch/flash mode without MCU intervention.
Can the MIC2299-15YML-TR drive more than two 1A white LEDs in series?
No-the MIC2299-15YML-TR is characterized to drive up to two 1A white LEDs in series (e.g., 8.4V total VF at 1A). Driving three or more increases output voltage requirements beyond safe OVP margins and exceeds the SOA limits at typical ambient temperatures. For higher LED counts, a higher-output-voltage driver or multi-channel architecture is required.
What is the recommended inductor value for the MIC2299-15YML-TR in a standard flash application?
The datasheet recommends a 2.2µH shielded power inductor with ≥3.5A saturation current and low DCR (e.g., ≤50mΩ) for most MIC2299-15YML-TR flash applications. This value balances efficiency, size, and stability-supporting 2MHz operation while maintaining continuous conduction mode across the 2.5V–10V input range and typical 7–12W output power.
Does the MIC2299-15YML-TR require an external Schottky diode, and what specifications are critical?
Yes-the MIC2299-15YML-TR requires an external Schottky diode connected between SW and output. Critical specs include: reverse voltage rating > VOUT (min 20V for 15V OVP), average forward current ≥ ILED, and low forward voltage (<0.4V at peak current) to minimize losses. A 40V-rated Schottky (e.g., RB055LAM-40) is preferred to suppress hot leakage current that could trigger false OVP events.
MIC2299-15YML-TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 12-VFDFN Exposed Pad, 12-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:
- 30V
- Current - Output / Channel:
- 3.5A (Switch)
- Frequency:
- 2MHz
- Dimming:
- Analog
- Applications:
- Backlight
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 12-MLF™ (3x3)
MIC2299-15YML-TR FAQ
1.How can I place an order for MIC2299-15YML-TR through Aetrix?
Please submit a Request for Quotation (RFQ) for MIC2299-15YML-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 MIC2299-15YML-TR reliable?
The price and inventory of MIC2299-15YML-TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MIC2299-15YML-TR is usually 5 days.
3.What payment methods are accepted for MIC2299-15YML-TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MIC2299-15YML-TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MIC2299-15YML-TR?
MIC2299-15YML-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MIC2299-15YML-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 MIC2299-15YML-TR?
For technical support, including MIC2299-15YML-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MIC2299-15YML-TR requirements.
6.How does Aetrix verify that MIC2299-15YML-TR is sourced from the original manufacturer or authorized distributors?
All MIC2299-15YML-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 MIC2299-15YML-TR meets industry standards.
7.What is the process for return or replacement of MIC2299-15YML-TR?
All MIC2299-15YML-TR units undergo pre-shipment inspection (PSI). If there is an issue with MIC2299-15YML-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 MIC2299-15YML-TR part is unused and in its original packaging.
Return procedure for MIC2299-15YML-TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MIC2299-15YML-TR Tags
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