My Inquiry
My Account
Microchip Technology MIC2871YMK-TR
- Part No.:
- MIC2871YMK-TR
- Manufacturer:
- Microchip Technology
- Category:
- LED Drivers
- Package:
- 14-WFDFN Exposed Pad
- Datasheet:
-
MIC2871YMK-TR.pdf
- Description:
- IC LED DRVR RGLTR SGL WR 14LDFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,893
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MIC2871YMK-TR from Microchip Technology is a 1.2A synchronous boost flash LED driver IC with single-wire serial interface and dual hardware enable pins (FEN1/FEN2), operating from 2.7V to 5.5V input, delivering ±5% LED current accuracy and up to 94% efficiency in mobile camera flashlight applications.
For engineers reviewing the MIC2871YMK-TR datasheet, MIC2871YMK-TR pinout, MIC2871YMK-TR application, or MIC2871YMK-TR equivalent, key selection criteria include flash/torch mode programmability, 2 MHz switching frequency enabling compact 1 µH inductor use, true load disconnect, configurable safety time-out, and OVP/short-circuit protection for robust smartphone imaging subsystems.
Technical Context
The MIC2871YMK-TR integrates a current-mode PWM boost converter running at 2 MHz with internal synchronous MOSFETs (RDS(ON) = 100 mΩ) and a precision LED current sink. Its control architecture supports simultaneous operation via single-wire serial interface (DC pin) and parallel hardware enables (FEN1/FEN2), with logic-OR behavior between FEN1 and FEN2 for flash activation.
Functional blocks include a safety timer with programmable duration (1.25 µs default) and current threshold (250 mA), low-battery voltage detection (default 3.6 V), overvoltage protection (5.37 V typical), and LED short-circuit detection (1.7 V threshold on VOUT–VLED). The FRSET pin sets maximum flash current (1.2 A max) via external resistor (17–60 kΩ), while torch current defaults to 25% of flash current.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Max Flash Current | 1.2 A - supports high-brightness white LED flash for 13+ MP smartphone cameras |
| Efficiency | Up to 94% - minimizes thermal stress and extends battery life during burst flash operation | LED Current Accuracy | ±5% - ensures consistent color rendering and exposure across temperature (–40°C to +125°C) |
| Input Voltage Range | 2.7 V to 5.5 V - compatible with single-cell Li-ion (3.0–4.2 V) and USB-powered systems |
| Switching Frequency | 2 MHz - enables use of tiny 1 µH inductor and reduces EMI filtering requirements |
| Shutdown Current | 1 µA - preserves battery charge during standby in always-on imaging subsystems |
| OVP Threshold | 5.37 V typical - protects internal circuitry and LED string against output overvoltage faults |
| Safety Timer Duration | Configurable (default 1.25 µs) - prevents thermal runaway during sustained high-current flash events |
Pinout & Package
Package: 14-pin 3 mm × 2 mm LDFN (MK suffix), ePAD exposed thermal pad connected to AGND2 for optimal thermal performance (θJA = 65.83°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, AGND1 | Analog ground return | LED current sink reference path; must be separated from power ground loop |
| 2, DC | Single-wire serial I/O | Multi-function pin: device enable (logic high) and serial data input (pulse-edge encoded) |
| 3, LED | LED cathode connection | Current sink node; connects directly to LED cathode; forms return path with OUT |
| 4, FEN1 | Flash enable #1 | Hardware trigger for flash mode; logic-OR with FEN2; internally pulled down (1 µA) |
| 5, AGND2 | Analog bias ground | Reference for FRSET and internal control circuitry; tied to ePAD for thermal conduction |
| 6, VIN | Main supply input | 2.7–5.5 V input; requires ≥2.2 µF ceramic capacitor to AGND2 near package |
| 7, PGND1 | Power ground #1 | Inductor current return path; shares internal connection with PGND2 |
| 8, OUT | Boost output | Connects to LED anode; requires ≥4.7 µF ceramic capacitor to PGND1 |
| 10, SW | Switch node | Internal MOSFET connection point; routes high di/dt current; keep away from sensitive traces |
| 11, FEN2 | Flash enable #2 | Redundant hardware flash trigger; identical function and pull-down behavior as FEN1 |
| 14, FRSET | Flash current programming | Resistor-to-AGND2 sets max flash current (1.2 A max); grounded = 1 A default |
| ePAD | Exposed thermal pad | Must be soldered to PCB ground plane for thermal management and noise reduction |
Key Features
| Feature | Design Value |
|---|---|
| True load disconnect | Eliminates leakage current path when disabled, preventing unintended LED glow or battery drain |
| Configurable safety time-out | Programmable flash duration and current threshold prevent thermal damage during extended illumination |
| LED short detection | 200 µs pre-activation test with 1.7 V VOUT–VLED threshold avoids false triggers and protects driver during fault conditions |
| Single-wire serial interface | Enables full register control (flash/torch/safety/LBVD) using only one GPIO, reducing host MCU pin count |
| 2 MHz fixed-frequency boost | Permits ultra-compact 1 µH inductor and small output capacitor without compromising regulation stability |
| Overvoltage protection (OVP) | Latches off at 5.37 V typical; requires power cycle or DC pin assertion to reset - prevents catastrophic failure |
Applications
| Smartphone Camera Flash | Auto-Focus Assist Light |
|---|---|
Use Scenario: High-intensity burst flash for still image capture in low-light conditions on modern smartphones. IC Role / Device Role / Timing Role: Primary flash LED driver delivering 1.2 A peak current with precise timing control via FEN1/FEN2 or single-wire interface. Use Value: Enables consistent 1/100 s flash duration and ±5% current accuracy across battery voltage range, critical for HDR image stacking. | Use Scenario: Low-power continuous illumination during phase-detection auto-focus sequence. IC Role / Device Role / Timing Role: Torch mode driver providing adjustable 25–100% of max flash current (up to 300 mA) with safety timer enforcement. Use Value: Delivers stable, flicker-free assist light without thermal throttling, supporting sub-100 ms focus lock times. |
| White Balance Calibration | Video Torch Lighting |
Use Scenario: Controlled spectral illumination during real-time white balance calculation in video preview mode. IC Role / Device Role / Timing Role: Precision current source driving calibrated WLED array with <±5% accuracy over –40°C to +125°C junction range. Use Value: Ensures repeatable chromaticity coordinates for accurate RGB sensor gain calibration under varying ambient temperatures. | Use Scenario: Extended-duration front-facing video lighting for video calls or vlogging on portable devices. IC Role / Device Role / Timing Role: Dual-mode driver operating in torch mode with programmable LBVD threshold (3.6 V default) to prevent brownout during sustained use. Use Value: Maintains constant luminance for >30 s while dynamically disabling output below battery threshold - avoids abrupt video blackouts. |
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 | 2.5 A max flash current; I²C interface only; no hardware FEN pins; 1.2 MHz switching | Higher current capability but lacks dual hardware enable and single-wire flexibility | Choose LM3644TME/NOPB when >1.2 A flash current or I²C system integration is required |
| TPS61310DSKR | 1.5 A flash current; no integrated LED current sink; requires external current sense; 2.5 MHz switching | Requires external components for current regulation; less integrated than MIC2871YMK-TR | Choose TPS61310DSKR when board space allows discrete current sensing and higher switching frequency is prioritized |
Compared with LM3644TME/NOPB and TPS61310DSKR, the MIC2871YMK-TR uniquely combines hardware-triggered flash activation, single-wire serial control, and integrated current regulation in a 3×2 mm LDFN package - simplifying layout and reducing BOM count for space-constrained mobile designs.
Availability
MIC2871YMK-TR is available at Aetrix Electronics and suitable for smartphone camera modules, mobile imaging subsystems, and portable consumer electronics requiring stable component supply with guaranteed long-term availability.
Supply support for MIC2871YMK-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 manufacturer specializing in microcontrollers, analog devices, and power management ICs for automotive, industrial, and consumer applications.
The MIC2871 product line is designed specifically for high-efficiency, high-current flash LED driving in mobile imaging systems, emphasizing compact size, thermal resilience, and flexible control interfaces.
FAQ
What is the maximum LED current supported by the MIC2871YMK-TR?
The MIC2871YMK-TR supports up to 1.2 A flash LED driving current, programmable via the FRSET pin using an external resistor (17–60 kΩ). Default flash current is 1 A when FRSET is grounded. Torch mode current is fixed at 25% of the programmed flash current, enabling precise dimming control without additional components.
How does the MIC2871YMK-TR implement safety time-out protection?
The MIC2871YMK-TR implements configurable safety time-out protection via two programmable registers: Safety Timer Duration (Address 3) and Safety Timer Threshold (Address 5). When LED current exceeds the threshold for longer than the set duration, the driver disables output to prevent thermal damage. Default values are 1.25 µs duration and 250 mA threshold.
Can the MIC2871YMK-TR operate without the single-wire interface?
Yes, the MIC2871YMK-TR can operate fully without the single-wire interface. Flash mode is activated by toggling FEN1 or FEN2 from LOW to HIGH; torch mode is enabled via register write but may also be configured using default settings. The DC pin functions as a simple enable/disable control when not used for serial communication.
What is the purpose of the FRSET pin on the MIC2871YMK-TR?
The FRSET pin on the MIC2871YMK-TR sets the maximum flash LED current level by connecting an external resistor to AGND2. Current is calculated as IFLASH(MAX) = 20500 / RFRSET (kΩ), supporting 1.2 A maximum. Grounding FRSET selects the default 1 A flash current. This pin cannot be left floating and requires a resistor between 17 kΩ and 60 kΩ for valid operation.
Does the MIC2871YMK-TR provide overvoltage protection, and how does it behave?
Yes, the MIC2871YMK-TR provides overvoltage protection (OVP) with a typical threshold of 5.37 V. When output voltage exceeds this level, the device latches off to prevent damage. Recovery requires either cycling the VIN supply or pulling the DC pin low for ≥TEND (405 µs), after which internal registers reset to default states and normal operation resumes.
MIC2871YMK-TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 14-WFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- 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:
- 2MHz
- Dimming:
- Single-Wire
- Applications:
- Camera Flash
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-LDFN (3x2)
MIC2871YMK-TR FAQ
1.How can I place an order for MIC2871YMK-TR through Aetrix?
Please submit a Request for Quotation (RFQ) for MIC2871YMK-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 MIC2871YMK-TR reliable?
The price and inventory of MIC2871YMK-TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MIC2871YMK-TR is usually 5 days.
3.What payment methods are accepted for MIC2871YMK-TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MIC2871YMK-TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MIC2871YMK-TR?
MIC2871YMK-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MIC2871YMK-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 MIC2871YMK-TR?
For technical support, including MIC2871YMK-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MIC2871YMK-TR requirements.
6.How does Aetrix verify that MIC2871YMK-TR is sourced from the original manufacturer or authorized distributors?
All MIC2871YMK-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 MIC2871YMK-TR meets industry standards.
7.What is the process for return or replacement of MIC2871YMK-TR?
All MIC2871YMK-TR units undergo pre-shipment inspection (PSI). If there is an issue with MIC2871YMK-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 MIC2871YMK-TR part is unused and in its original packaging.
Return procedure for MIC2871YMK-TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MIC2871YMK-TR Tags
-
BCR402RE6327HTSA1
Infineon Technologies
-
BCR430UXTSA2
Infineon Technologies
-
BCR420UE6433HTMA1
Infineon Technologies
-
BCR420UE6327HTSA1
Infineon Technologies
-
BCR421UE6327HTSA1
Infineon Technologies
-
LYT1604D-TL
Power Integrations
-
HV9910CLG-G
Microchip Technology
-
CL2N8-G
Microchip Technology
-
BCR420UW6-7
Diodes Incorporated
-
BCR421UW6-7
Diodes Incorporated
-
BCR420UFD-7
Diodes Incorporated
-
BCR421UFD-7
Diodes Incorporated
Tech Hub
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
