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Microchip Technology MIC2860-2DYD6-TR
- Part No.:
- MIC2860-2DYD6-TR
- Manufacturer:
- Microchip Technology
- Category:
- LED Drivers
- Package:
- SOT-23-6 Thin, TSOT-23-6
- Datasheet:
-
MIC2860-2DYD6-TR.pdf
- Description:
- IC LED DRV LIN SGL WR TSOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:154
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Product details
Overview
MIC2860-2DYD6 from Micrel Inc. is a dual-channel linear white LED driver IC designed for portable display and keypad backlighting in battery-powered mobile devices. It delivers 30.2mA per channel with 52mV dropout, ±0.5% channel matching, and 32-step single-wire digital dimming - enabling direct battery drive without switching noise or efficiency loss from boost converters.
For engineers reviewing the MIC2860-2DYD6 datasheet, MIC2860-2DYD6 pinout, MIC2860-2DYD6 application, or MIC2860-2DYD6 equivalent, key selection criteria include linear WLED driver architecture, RSET-based current setting, SC-pin digital control timing (tPROG_HIGH/tPROG_LOW 0.3–75µs), and Thin SOT-23 package thermal performance (θJA = 177°C/W).
Technical Context
The MIC2860-2DYD6 implements two independent linear current sinks driven by a master current mirror referenced to the RSET resistor. Its single-wire SC interface uses edge-triggered programming pulses - not PWM - to decrement a 5-bit down counter controlling brightness level (0–31) with no processor overhead after initial setup.
It operates across 3.0V–5.5V input range with shutdown current ≤1µA and startup delay of 33µs. Dropout voltage remains stable across temperature (±0.15mV/°C typical) and brightness level, supporting consistent illumination in varying ambient conditions without feedback compensation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3.0V to 5.5V - compatible with single-cell Li-ion (3.6V nominal) and USB-powered systems without LDO pre-regulation. |
| Max LED Current per Channel | 30.2mA at RSET = 9.53kΩ - sets peak backlight intensity for small-to-midsize LCDs (e.g., QVGA–WQVGA). |
| Dropout Voltage | 52mV at 30.2mA - enables >98% power efficiency when driving LEDs directly from battery, eliminating boost converter losses. |
| Channel Matching | ±0.5% typical - ensures uniform luminance across dual-panel or side-lit displays without manual calibration. |
| Digital Dimming Steps | 32 discrete levels - provides smooth, flicker-free brightness control using only one GPIO pin and no external clock or data lines. |
| Junction Temp Range | –40°C to +125°C - supports operation in handheld devices under sustained display-on conditions and automotive-adjacent environments. |
| Shutdown Current | ≤1µA - minimizes battery drain during standby in always-on display applications like GPS navigation. |
Pinout & Package
Package: 6-Pin Thin SOT-23 (D6), RoHS-compliant, halogen-free mold compound, NiPdAu lead finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - SC | Single-wire serial control input | Accepts logic-level pulses (0.3–75µs width) to decrement brightness counter; also serves as enable - high = active, low ≥500µs = shutdown. |
| 2 - GND | Power ground reference | Low-impedance return path for both LED sink currents and internal bias; requires short, wide trace to CIN ground. |
| 3 - VIN | Main power supply input | Supplies linear drivers and control circuitry; requires ≥1µF X5R/X7R ceramic bypass capacitor placed adjacent to pin. |
| 4 - D2 | LED2 cathode driver output | Sinks up to 30.2mA; connects to LED cathode while anode ties to VIN - forms low-dropout constant-current path. |
| 5 - RSET | Current reference input | Connects external resistor to GND to set master current; 9.53kΩ yields 30.2mA, 19.1kΩ yields 15.1mA (see Table 1). |
| 6 - D1 | LED1 cathode driver output | Identical function to D2; channels operate independently but share RSET reference and SC control logic. |
Key Features
| Feature | Design Value |
|---|---|
| No switching noise or EMI | Linear architecture eliminates inductor/charge-pump ripple - critical for noise-sensitive RF sections in mobile handsets. |
| Single-wire digital interface | Reduces GPIO count and PCB routing complexity vs. I²C/SPI; supports "set-and-forget" brightness control without continuous processor polling. |
| Thermal-efficient Thin SOT-23 | θJA = 177°C/W enables 30.2mA/channel operation at TJ ≤125°C with minimal heatsinking in space-constrained handheld layouts. |
| Programmable current accuracy | ±1.0% typical current accuracy ensures repeatable luminance across production units without post-manufacture trimming. |
| Brightness roll-over logic | Counter wraps from level 0 → 31 on successive pulses - simplifies firmware implementation for cyclic dimming or user-interface feedback loops. |
Applications
| Mobile Handsets | Digital Cameras |
|---|---|
Use Scenario: Backlighting for 2.4"–3.5" TFT-LCD main displays and keypad LEDs in GSM/UMTS feature phones. IC Role / Device Role / Timing Role: Dual-channel constant-current sink providing synchronized, matched illumination with zero switching artifacts near cellular transceivers. Use Value: Extends talk time by 12–18% versus charge-pump alternatives due to 52mV dropout and <1µA shutdown current. | Use Scenario: Illuminating rear-panel LCD status displays and optical viewfinder indicators in compact point-and-shoot cameras. IC Role / Device Role / Timing Role: Linear WLED driver delivering stable 20–30mA per channel across battery discharge curve (4.2V → 3.2V) without brightness droop. Use Value: Eliminates need for separate boost regulator and reduces BOM count by 3 components (inductor, diode, capacitor). |
| Portable Media Players | GPS Navigation Devices |
Use Scenario: Driving dual-side lit 3.0"–4.3" widescreen displays in MP3/video players with user-adjustable brightness. IC Role / Device Role / Timing Role: Single-wire SC interface enables brightness control via dedicated button interrupt - no dedicated PWM timer resource required. Use Value: Reduces MCU firmware overhead by 1.2ms/cycle vs. software-generated PWM, freeing CPU for audio decode tasks. | Use Scenario: Backlighting sunlight-readable 3.5"–4.7" automotive-grade LCDs in portable GPS units operating from 12V car adapters or internal Li-ion packs. IC Role / Device Role / Timing Role: High-temp rated (–40°C to +125°C) linear driver maintaining ±0.5% channel match during thermal cycling in parked-car environments. Use Value: Prevents visible luminance asymmetry between left/right display zones over –30°C to +85°C ambient range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-channel linear WLED driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM3530TMX/NOPB | I²C interface (4-wire), 6-bit dimming (64 steps), higher quiescent current (250µA) | Requires dedicated I²C bus and pull-up resistors; better suited for systems with existing I²C infrastructure and finer brightness resolution needs. | Select LM3530TMX/NOPB if I²C is available and >32 dimming steps are required; avoid if GPIO count is constrained. |
| TPS61165DRVR | Inductive boost topology, 1.2MHz switching, 30V output capability, 90% efficiency at 20mA | Supports higher Vf LEDs (e.g., 3.6V+ blue/white) but introduces EMI and requires inductor; unsuitable for RF-sensitive layouts. | Select TPS61165DRVR only when driving high-Vf LEDs or when input voltage falls below 3.0V; prefer MIC2860-2DYD6 for noise-critical, single-cell Li-ion use. |
Compared with LM3530TMX/NOPB and TPS61165DRVR, the MIC2860-2DYD6 uniquely balances ultra-low EMI, minimal GPIO usage, and battery-direct operation - making it optimal for cost-sensitive, space-constrained mobile designs where RF integrity and standby current are primary constraints.
Availability
MIC2860-2DYD6 is available at Aetrix Electronics and suitable for mobile handset backlighting, portable media player displays, and GPS navigation device LCDs requiring stable component supply with guaranteed long-term manufacturability.
Supply support for MIC2860-2DYD6 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 analog and mixed-signal semiconductor company founded in 1978 and acquired by Microchip Technology in 2015. It specialized in power management, LED drivers, and timing solutions for portable and industrial markets.
The MIC2860 family was developed specifically for low-noise, high-efficiency WLED backlighting in cost-sensitive consumer electronics - prioritizing direct-battery operation, minimal external components, and robust thermal performance in tiny packages.
FAQ
What is the maximum LED forward voltage the MIC2860-2DYD6 can support?
The MIC2860-2DYD6 does not regulate LED forward voltage - it regulates current. Maximum supported Vf equals VIN minus dropout voltage. At VIN = 5.5V and 30.2mA load, Vf ≤ 5.448V (5.5V – 52mV). For safe margin, design with Vf ≤ VIN – 100mV. The MIC2860-2DYD6 maintains regulation down to 52mV dropout across its full operating temperature range.
Can the MIC2860-2DYD6 drive a single LED at double the current?
Yes - connect D1 and D2 in parallel to the same LED cathode and halve the RSET resistor value (e.g., 4.76kΩ for ~60mA total). This configuration improves thermal sharing and reduces effective dropout, but requires verifying junction temperature stays within –40°C to +125°C. The MIC2860-2DYD6's matched channels ensure balanced current splitting without external balancing components.
What happens to brightness level memory during power cycling of the MIC2860-2DYD6?
The MIC2860-2DYD6 has no non-volatile memory. Upon power-up or SC pin re-enable after shutdown, it always defaults to brightness level 31 (100% current). Any prior dimming state is lost. This behavior is inherent to the MIC2860-2DYD6's architecture and requires host firmware to retransmit desired level if persistence is needed.
Is the SC pin compatible with 1.8V logic microcontrollers?
Yes - the MIC2860-2DYD6 SC pin accepts logic-high signals as low as 1.4V (min) and logic-low as high as 0.4V (max), meeting standard 1.8V CMOS thresholds. No level-shifting is required when interfacing with 1.8V MCUs. The MIC2860-2DYD6 also tolerates SC input leakage ≤1µA, minimizing loading on weak-drive GPIOs.
How does RSET resistor tolerance affect LED current accuracy in the MIC2860-2DYD6?
RSET tolerance directly propagates to LED current accuracy: a 1% RSET resistor yields ±1% typical current error, aligning with the MIC2860-2DYD6's ±1.0% current accuracy spec. Temperature drift of the RSET resistor adds secondary error - use 100ppm/°C or better metal-film types. The MIC2860-2DYD6's internal reference stability contributes negligible additional error (<0.1%) over temperature.
MIC2860-2DYD6-TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- SOT-23-6 Thin, TSOT-23-6
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Linear
- Topology:
- -
- Internal Switch(s):
- Yes
- Number of Outputs:
- 2
- Voltage - Supply (Min):
- 3V
- Voltage - Supply (Max):
- 5.5V
- Voltage - Output:
- 0V ~ 5.5V
- Current - Output / Channel:
- 30.2mA
- Frequency:
- -
- Dimming:
- Single-Wire
- Applications:
- Backlight
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TSOT-23-6
MIC2860-2DYD6-TR FAQ
1.How can I place an order for MIC2860-2DYD6-TR through Aetrix?
Please submit a Request for Quotation (RFQ) for MIC2860-2DYD6-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 MIC2860-2DYD6-TR reliable?
The price and inventory of MIC2860-2DYD6-TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MIC2860-2DYD6-TR is usually 5 days.
3.What payment methods are accepted for MIC2860-2DYD6-TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MIC2860-2DYD6-TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MIC2860-2DYD6-TR?
MIC2860-2DYD6-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MIC2860-2DYD6-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 MIC2860-2DYD6-TR?
For technical support, including MIC2860-2DYD6-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MIC2860-2DYD6-TR requirements.
6.How does Aetrix verify that MIC2860-2DYD6-TR is sourced from the original manufacturer or authorized distributors?
All MIC2860-2DYD6-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 MIC2860-2DYD6-TR meets industry standards.
7.What is the process for return or replacement of MIC2860-2DYD6-TR?
All MIC2860-2DYD6-TR units undergo pre-shipment inspection (PSI). If there is an issue with MIC2860-2DYD6-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 MIC2860-2DYD6-TR part is unused and in its original packaging.
Return procedure for MIC2860-2DYD6-TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MIC2860-2DYD6-TR Tags
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BCR402RE6327HTSA1
Infineon Technologies
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BCR430UXTSA2
Infineon Technologies
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BCR420UE6433HTMA1
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BCR420UE6327HTSA1
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BCR421UE6327HTSA1
Infineon Technologies
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LYT1604D-TL
Power Integrations
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HV9910CLG-G
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CL2N8-G
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BCR420UW6-7
Diodes Incorporated
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BCR421UW6-7
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BCR420UFD-7
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BCR421UFD-7
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