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Microchip Technology MIC2874YCS-TR
- Part No.:
- MIC2874YCS-TR
- Manufacturer:
- Microchip Technology
- Category:
- LED Drivers
- Package:
- 9-UFBGA, WLCSP
- Datasheet:
-
MIC2874YCS-TR.pdf
- Description:
- IC LED DRVR RGLTR SGL WR 9WLCSP
- Quantity:
- Payment:
- Shipping:
Inventory:1,273
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Product details
Overview
MIC2874YCS-TR from Microchip Technology is a 1.2A synchronous boost flash LED driver IC for mobile camera illumination, featuring single-wire serial interface control, true load disconnect, configurable safety time-out (1.25 s default), output overvoltage protection, and LED short detection-designed for smartphone front/rear camera flash applications.
For engineers reviewing the MIC2874YCS-TR datasheet, MIC2874YCS-TR pinout, MIC2874YCS-TR application, or MIC2874YCS-TR equivalent, key selection considerations include its 4 MHz switching frequency enabling sub-1 µH inductor use, 2.7–5.5 V input range compatibility with Li-ion/Li-poly batteries, WLCSP-9 package footprint constraints, and dual-mode (Flash/Torch) current programming via DC pin or FEN hardware enable.
Technical Context
The MIC2874YCS-TR integrates a current-mode PWM boost converter operating at 4 MHz with internal synchronous MOSFETs (RDS(ON) = 125 mΩ P-ch, unspecified N-ch), supporting both boost and linear operation depending on VIN vs. LED forward voltage. Its control logic enables Flash mode (up to 1.2 A, default 1.0 A) and Torch mode (up to 300 mA, default) with independent register-based current setting via single-wire interface.
Functional safety includes programmable safety timer (duration and current threshold), low-battery voltage detection (default 3.0 V ±50 mV), thermal shutdown (155°C/140°C hysteresis), and automatic LED short-circuit test (2 mA, 200 µs, VSHORT = 1.7 V typical) prior to each Flash/Torch activation. True load disconnect isolates the LED path during shutdown.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Max LED Current | 1.2 A Flash mode - supports high-brightness image capture with minimal thermal derating under pulsed operation. |
| Input Voltage Range | 2.7 V to 5.5 V - matches single-cell Li-ion/Li-poly battery systems across full discharge curve. |
| Switching Frequency | 4 MHz (3.6–4.4 MHz typ.) - enables use of 0.47 µH inductor and compact 4.7 µF ceramic output capacitor. |
| Shutdown Current | 1 µA max - preserves battery life during extended standby in always-on camera modules. |
| Safety Timer Duration | 1.25 s default - prevents LED overheating and battery over-discharge during sustained Flash activation. |
| LED Short Threshold | 1.7 V (1.55–1.85 V) - detects LED cathode-to-ground shorts before enabling current sink, avoiding fault propagation. |
| UVLO Threshold | 2.53 V rising (180 mV hysteresis) - ensures stable startup only when battery voltage supports reliable boost regulation. |
Pinout & Package
Package: 9-bump 1.30 mm × 1.30 mm WLCSP (CS), bottom-side solder bumps, A1 marked with "•".
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A1 (LED) | LED current sink terminal | Connects to LED cathode; completes current path from OUT through LED; requires dedicated LGND return trace. |
| A2 (DC) | Single-wire serial interface & enable | Multi-function pin: accepts pulse-coded commands (address/data frames) or acts as GPIO enable (high = active). |
| A3 (OUT) | Boost converter output | Drives LED anode; requires ≥4.7 µF low-ESR ceramic capacitor to PGND for stability and ripple suppression. |
| B1 (LGND) | Linear ground reference | Return path for LED sink current; must be separated from PGND/AGND loops and joined at single point. |
| B2 (FEN) | Hardware Flash enable | Active-high trigger for Flash mode; internally pulled down (1 µA) if floating; edge-sensitive activation. |
| B3 (SW) | Internal switch node | Connects to inductor; carries high di/dt switching current; requires short, wide, isolated routing away from analog nodes. |
| C1 (AGND) | Analog ground reference | Reference for internal bias, control logic, and ADCs; connects directly to LGND and PGND at star point. |
| C2 (VIN) | Main power input | Supplies gate drive and control circuitry; requires ≥4.7 µF low-ESR ceramic capacitor to AGND near package. |
| C3 (PGND) | Power ground return | High-current return for boost inductor and internal MOSFETs; must have low-inductance, short-area loop. |
Key Features
| Feature | Design Value |
|---|---|
| True load disconnect | Physically opens LED current path during shutdown - eliminates leakage-induced battery drain and unintended LED glow. |
| Configurable safety time-out | Programmable duration (via STDUR register) and current threshold (ST_TH register) - enables system-level thermal and battery protection tuning. |
| Single-wire serial interface | Robust pulse-edge encoding with address/data framing and auto-shutdown on >405 µs inactivity - reduces GPIO count without sacrificing configurability. |
| LED short-circuit detection | Pre-activation 2 mA test with 1.7 V threshold - prevents damage from faulty LED connections before high-current delivery. |
| Low-battery voltage detection | Adjustable LBVD threshold (default 3.0 V ±50 mV) - disables LED drive before battery sag causes system brownout or flash inconsistency. |
Applications
| Smartphone Camera Flash | Front-Facing Video Torch |
|---|---|
Use Scenario: High-intensity pulsed illumination for rear-camera still capture in low-light conditions, synchronized with shutter timing. IC Role / Device Role / Timing Role: Flash LED driver delivering up to 1.2 A peak current with <200 µs turn-on delay in boost mode, controlled by baseband processor via single-wire interface. Use Value: Enables consistent 10+ MP sensor exposure with minimal motion blur, leveraging 4 MHz switching for fast transient response and small passive size. | Use Scenario: Continuous low-power illumination for front-facing video calls or facial recognition in dim ambient light. IC Role / Device Role / Timing Role: Torch mode LED driver delivering up to 300 mA steady-state current, configured via FEN pin or register write for fixed brightness level. Use Value: Provides uniform, flicker-free lighting without thermal throttling, using linear regulation when VIN exceeds LED VF, reducing EMI vs. PWM dimming. |
| Digital Camera Auxiliary Light | Auto-Focus Assist Illuminator |
Use Scenario: Compact auxiliary flash module in portable digital cameras where board space limits inductor and capacitor selection. IC Role / Device Role / Timing Role: Integrated boost + current sink driving single or parallel WLEDs; uses 0.47 µH inductor and 4.7 µF output cap enabled by 4 MHz operation. Use Value: Achieves >85% efficiency at 3.6 V input while fitting within 1.3 × 1.3 mm WLCSP footprint - critical for ultra-thin camera designs. | Use Scenario: Brief (<500 ms), low-duty-cycle infrared or white LED burst to aid contrast-based autofocus in near-dark environments. IC Role / Device Role / Timing Role: Precision current source triggered by AF controller via FEN pin, with safety timer limiting burst duration to prevent LED saturation. Use Value: Delivers repeatable 100–200 mA pulses with <1% current accuracy at 25°C, ensuring consistent AF lock speed across battery voltage range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar flash LED driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM3644TME/NOPB | 2-channel, 1.5 A per channel, I²C interface, 2.5–5.5 V input, 1.2 mm × 1.6 mm DSBGA | Supports dual-LED configurations and color-mixing; lacks single-wire simplicity and true load disconnect | Choose LM3644TME/NOPB when multi-LED control or I²C ecosystem integration is required; MIC2874YCS-TR preferred for single-LED, GPIO-constrained designs. |
| TPS61310DSQR | 1.5 A boost driver with analog/digital dimming, 2.5–5.5 V input, 2 mm × 2 mm SON-8, no integrated current sink | Requires external current sink transistor; no built-in safety timer or LED short test | Choose TPS61310DSQR only when discrete current path design is acceptable and safety features are implemented externally. |
Compared with LM3644TME/NOPB and TPS61310DSQR, the MIC2874YCS-TR uniquely combines single-wire control, true load disconnect, and factory-configurable safety timer in a 1.3×1.3 mm WLCSP - optimizing for minimal BOM count, board area, and firmware overhead in single-LED smartphone flash subsystems.
Availability
MIC2874YCS-TR is available at Aetrix Electronics and suitable for smartphone camera modules, front-facing video torches, digital camera auxiliary lighting, and auto-focus assist illuminators requiring stable component supply across high-volume production cycles.
Supply support for MIC2874YCS-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 U.S.-based semiconductor company specializing in microcontrollers, analog devices, and power management ICs, with broad automotive, industrial, and consumer design-in support.
The MIC2874YCS-TR belongs to Microchip's high-efficiency LED driver product line, engineered specifically for space-constrained mobile imaging systems requiring precise, safe, and low-pin-count flash/torch illumination control.
FAQ
What is the maximum continuous LED current supported by the MIC2874YCS-TR in Torch mode?
The MIC2874YCS-TR supports up to 300 mA continuous LED current in Torch mode, adjustable in 16 discrete steps via the Torch Current register (Address 2). At 25°C ambient and with proper PCB thermal design, it maintains ±8% current accuracy across the full 300 mA range, making MIC2874YCS-TR suitable for stable video lighting applications without thermal derating.
How does the MIC2874YCS-TR implement true load disconnect, and why is it important?
The MIC2874YCS-TR physically disconnects the LED path from both OUT and LED pins during shutdown using internal isolation switches - eliminating leakage paths that cause battery drain or faint LED glow. This feature is critical for always-on camera modules where even 1 µA leakage accumulates over time; MIC2874YCS-TR achieves <1 µA shutdown current while maintaining full disconnect integrity.
Can the MIC2874YCS-TR operate without the single-wire interface, using only the FEN pin?
Yes, the MIC2874YCS-TR can operate exclusively via the FEN pin for basic Flash mode activation: a rising edge on FEN initiates Flash mode at the default 1.0 A current, terminating when FEN goes low. The single-wire interface is optional for advanced configuration (e.g., custom current levels, safety timer tuning); MIC2874YCS-TR retains full functionality with FEN-only control in resource-limited designs.
What protection features does the MIC2874YCS-TR include to prevent damage during abnormal operating conditions?
The MIC2874YCS-TR integrates five hardware protections: (1) Output overvoltage latching shutdown, (2) LED short-circuit detection (1.7 V threshold pre-activation), (3) Thermal shutdown (155°C trip, 140°C hysteresis), (4) Low-battery voltage detection (adjustable 2.7–3.3 V), and (5) Configurable safety timer with current threshold monitoring. These operate independently of firmware, ensuring robustness even if the host processor fails - a core reliability feature of MIC2874YCS-TR.
What is the recommended inductor value and type for optimal performance of the MIC2874YCS-TR?
Microchip specifies a 0.47 µH, shielded, low-DCR power inductor (e.g., Coilcraft XAL5030-471MEB) for the MIC2874YCS-TR. This value is optimized for 4 MHz switching, minimizing size while maintaining >85% efficiency at 3.6 V input and 1.2 A Flash current. Inductor saturation current must exceed 4.1 A (switch current limit), and core material should support high-frequency operation without excessive core loss - deviations compromise MIC2874YCS-TR efficiency and thermal performance.
MIC2874YCS-TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 9-UFBGA, WLCSP
- 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):
- 2.7V
- Voltage - Supply (Max):
- 5.5V
- Voltage - Output:
- -
- Current - Output / Channel:
- 1.2A (Flash)
- Frequency:
- 4MHz
- Dimming:
- Single-Wire
- Applications:
- Camera Flash
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 9-WLCSP (1.3x1.3)
MIC2874YCS-TR FAQ
1.How can I place an order for MIC2874YCS-TR through Aetrix?
Please submit a Request for Quotation (RFQ) for MIC2874YCS-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 MIC2874YCS-TR reliable?
The price and inventory of MIC2874YCS-TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MIC2874YCS-TR is usually 5 days.
3.What payment methods are accepted for MIC2874YCS-TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MIC2874YCS-TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MIC2874YCS-TR?
MIC2874YCS-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MIC2874YCS-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 MIC2874YCS-TR?
For technical support, including MIC2874YCS-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MIC2874YCS-TR requirements.
6.How does Aetrix verify that MIC2874YCS-TR is sourced from the original manufacturer or authorized distributors?
All MIC2874YCS-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 MIC2874YCS-TR meets industry standards.
7.What is the process for return or replacement of MIC2874YCS-TR?
All MIC2874YCS-TR units undergo pre-shipment inspection (PSI). If there is an issue with MIC2874YCS-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 MIC2874YCS-TR part is unused and in its original packaging.
Return procedure for MIC2874YCS-TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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