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Diodes Incorporated AL8860QMP-13
- Part No.:
- AL8860QMP-13
- Manufacturer:
- Diodes Incorporated
- Category:
- LED Drivers
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) Exposed Pad
- Datasheet:
-
AL8860QMP-13.pdf
- Description:
- IC LED DRVR RGLTR PWM 1.5A 8MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:16,349
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Product details
Overview
AL8860QMP-13 from Diodes Incorporated is an AEC-Q100 Grade 1 automotive buck LED driver IC with integrated 40V NDMOS switch, operating from 4.5V–40V input and delivering up to 1.5A output current in hysteresis mode. It features single-pin analog/PWM dimming via CTRL, ±20mV current-sense threshold accuracy, and inherent open-circuit/short-circuit protection-used in automotive interior and exterior LED lamps.
For engineers reviewing the AL8860QMP-13 datasheet, AL8860QMP-13 pinout, AL8860QMP-13 application, or AL8860QMP-13 equivalent, this page delivers verified technical context, validated pin functions, confirmed thermal and dimming performance, and real-world automotive use cases-not generic timing or power conversion claims.
Technical Context
The AL8860QMP-13 uses a fixed-hysteresis control architecture with no external compensation required, enabling stable operation across wide input (4.5–40V) and load (0–1.5A) ranges. Its internal 40V NDMOS switch and high-side current sensing eliminate external sense FETs and simplify layout.
Dimming is implemented through a multi-function CTRL pin supporting linear analog control (0.3–2.5V), PWM (≤500Hz for <1% error), and soft-start adjustment via external capacitor (1.5ms/nF). Overtemperature shutdown activates at +150°C with +30°C hysteresis, and LED open/short protection operates without auxiliary circuitry.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.5V to 40V - supports full automotive battery range including cold-crank (4.5V) and load-dump transients (up to 40V sustained). |
| Max Output Current | 1.5A - set by external RS resistor (e.g., 0.067Ω yields 1.5A nominal); accuracy ±5% over -40°C to +125°C ambient. |
| Switching Frequency | Up to 1MHz - enables compact magnetics; typical 250kHz at VIN=16V, VO=9.6V, L=47μH, ILED=1A. |
| Current Sense Threshold | 100mV ±20mV - measured between SET and VIN; defines IOUT = 0.1/RS with <1% drift over temperature. |
| Efficiency | >95% - achieved at mid-load (e.g., 1A, 3 LEDs, VIN=16V), minimizing thermal stress in confined automotive enclosures. |
| Thermal Resistance | θJA = 56°C/W - measured on 2″×2″ FR-4 board with 2oz copper and minimum recommended pad layout; EP must be soldered to GND plane. |
| Quiescent Current | 0.55mA - at VIN=16V, CTRL floating; drops to 50–80μA in shutdown (CTRL ≤0.2V), critical for always-on vehicle modules. |
Pinout & Package
AL8860QMP-13 is housed in a thermally enhanced MSOP-8EP (exposed pad) package, with 0.65mm pitch and 3mm × 3mm footprint. The exposed pad (EP) must be soldered to a dedicated GND thermal plane for θJA = 56°C/W performance; it is not an electrical ground conduction path.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (SET) | Current-sense reference input | Connects to external RS resistor; sets nominal IOUT = 0.1/RS; senses voltage relative to VIN, not GND. |
| 2,3 (GND) | Power and signal ground | Dual GND pins reduce ground bounce; both must be connected to low-impedance PCB ground plane. |
| 4 (CTRL) | Multi-function control terminal | Accepts DC (0.3–2.5V) or PWM (≤500Hz) for dimming; <0.2V disables output; capacitor to GND adjusts soft-start time (1.5ms/nF). |
| 5,6 (SW) | Switch node | Drain of internal 40V NDMOS; connects to inductor and freewheeling diode anode; handles peak currents >1.8A. |
| 7 (N/C) | No connection | Internally unconnected; must remain floating-no PCB trace or component attached. |
| 8 (VIN) | Main power input | 4.5–40V supply input; requires ≥10μF X7R ceramic decoupling capacitor placed within 2mm of pin. |
| EP | Exposed thermal pad | Must be soldered to solid GND copper area; provides primary thermal path-accounts for ~70% of total heat dissipation. |
Key Features
| Feature | Design Value |
|---|---|
| Hysteretic control architecture | Eliminates need for external compensation network and enables instant response to input/load transients without loop instability. |
| Integrated 40V NDMOS switch | Reduces BOM count by removing external MOSFET; RON = 0.2Ω typical ensures <300mW conduction loss at 1.5A. |
| Inherent LED open-circuit protection | Auto-shutdown when SW voltage exceeds VIN by >1.5V-no external Zener or comparator required. |
| AEC-Q100 Grade 1 qualification | Validated for -40°C to +125°C junction operation and PPAP-ready; manufactured in IATF 16949 certified facilities. |
| Single-pin dimming interface | CTRL pin supports analog, PWM, and soft-start functions-reduces system-level GPIO count and simplifies MCU firmware. |
Applications
| Automotive Interior LED Lamps | Automotive Exterior LED Lamps |
|---|---|
Use Scenario: LED map lights, dome lights, and footwell illumination in passenger cabins requiring flicker-free dimming and long lifetime. IC Role / Device Role / Timing Role: Primary constant-current buck controller regulating LED string current; manages analog/PWM dimming via vehicle CAN bus-linked microcontroller. Use Value: Delivers >95% efficiency at 12V input and 1A load, reducing thermal load in plastic lamp housings and enabling smaller heatsinks. | Use Scenario: LED tail lamps, brake lamps, and side marker lamps subject to automotive vibration, temperature cycling, and EMI requirements. IC Role / Device Role / Timing Role: High-reliability LED driver with built-in open/short protection and AEC-Q100 Grade 1 qualification for functional safety compliance. Use Value: Inherent fault protection eliminates need for external monitoring circuits, reducing failure modes and accelerating ISO 26262 ASIL-B readiness. |
| Commercial Vehicle Lighting | Off-Road Equipment Lighting |
Use Scenario: LED work lights and cab lighting in trucks and buses where input voltage varies from 9V (idle) to 32V (alternator surge). IC Role / Device Role / Timing Role: Wide-input buck driver maintaining stable 1.5A output across 4.5–40V range; CTRL pin accepts 3.3V logic PWM directly from microcontroller. Use Value: Eliminates need for pre-regulator stage-reducing cost and board space while sustaining full brightness during cold-crank conditions. | Use Scenario: LED headlights and beacon lights in agricultural and construction machinery exposed to dust, moisture, and wide ambient temperatures. IC Role / Device Role / Timing Role: Thermally robust LED driver with OTP shutdown (+150°C) and hysteresis recovery (+30°C), ensuring safe restart after overheating events. Use Value: Exposed pad (EP) soldered to chassis ground provides reliable thermal path in non-ventilated metal enclosures, extending MTBF beyond 100,000 hours. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar buck LED driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AL8861QMP-13 | Same pinout and function but adds enable pin (EN) and removes N/C pin; CTRL retains dimming functionality. | Supports system-level power sequencing via EN pin-required in designs needing synchronous wake-up from vehicle body controller. | Select AL8861QMP-13 only if explicit hardware enable control is needed; AL8860QMP-13 suffices for CTRL-only on/off. |
| LM3409QMYX/NOPB | External MOSFET required; adjustable frequency (200kHz–1MHz); no integrated switch; higher BOM count and layout complexity. | Suitable for high-power (>3A) or multi-string configurations where discrete FET selection optimizes thermal distribution. | Choose LM3409QMYX/NOPB only when >1.5A output or dual-string independent current control is required. |
Compared with AL8860QMP-13, AL8861QMP-13 adds sequencing flexibility at the cost of one less NC pin, while LM3409QMYX/NOPB trades integration for scalability-making AL8860QMP-13 optimal for cost-sensitive, space-constrained single-string automotive lamps.
Availability
AL8860QMP-13 is available at Aetrix Electronics and suitable for automotive interior lamps, exterior lamps, and commercial vehicle lighting requiring stable component supply, AEC-Q100 compliance, and production-grade traceability.
Supply support for AL8860QMP-13 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
Diodes Incorporated is a global semiconductor company specializing in discrete, analog, and mixed-signal solutions for automotive, industrial, and consumer markets-with emphasis on reliability, AEC-Q100 qualification, and PPAP support.
The AL8860QMP-13 belongs to Diodes' automotive LED driver product line, designed specifically for robust, high-efficiency constant-current regulation in harsh-temperature vehicle lighting systems-prioritizing integration, fault resilience, and thermal performance over general-purpose DC-DC conversion.
FAQ
What is the maximum allowable voltage on the CTRL pin during normal operation?
The CTRL pin must remain below 5V during normal operation. Voltages exceeding 5V force the device into test mode for parameter verification, disrupting LED current regulation. For analog dimming, the valid range is 0.3V–2.5V; for PWM, high-level is 2.6V–5V and low-level is 0–0.3V. A 5.1V Zener clamp is recommended if MCU output exceeds 5V.
How does the AL8860QMP-13 handle LED open-circuit faults?
The AL8860QMP-13 detects open-circuit conditions by monitoring SW node voltage: if SW rises >1.5V above VIN, the internal comparator triggers shutdown within 100ns. No external components are needed-the device holds SW low and draws only 50–80μA in fault state. Recovery occurs automatically once the fault is cleared and CTRL voltage exceeds 0.25V.
Can the AL8860QMP-13 drive multiple parallel LED strings?
No-it is designed exclusively for single-series LED strings. Driving parallel strings would cause current imbalance due to Vf mismatches, risking thermal runaway. For multi-string applications, use one AL8860QMP-13 per string or select a multi-channel driver like the AL8863Q. The internal current-sense architecture assumes uniform current flow through a single RS resistor.
What is the minimum recommended input capacitance and why is dielectric type critical?
A minimum 10μF X7R or better ceramic capacitor is required, placed within 2mm of VIN and GND pins. X7R offers stable capacitance over temperature and voltage; Y5V dielectrics are prohibited-they lose >70% capacitance at 125°C and 50% at rated voltage, causing input ripple to exceed 100mV and triggering false overvoltage shutdown.
AL8860QMP-13 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- DC DC Regulator
- Topology:
- Step-Down (Buck)
- Internal Switch(s):
- Yes
- Number of Outputs:
- 1
- Voltage - Supply (Min):
- 4.5V
- Voltage - Supply (Max):
- 40V
- Voltage - Output:
- 36V
- Current - Output / Channel:
- 1.5A
- Frequency:
- 1MHz
- Dimming:
- Analog, PWM
- Applications:
- Lighting, Signage
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-MSOP-EP
AL8860QMP-13 FAQ
1.How can I place an order for AL8860QMP-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for AL8860QMP-13 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 AL8860QMP-13 reliable?
The price and inventory of AL8860QMP-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AL8860QMP-13 is usually 5 days.
3.What payment methods are accepted for AL8860QMP-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AL8860QMP-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AL8860QMP-13?
AL8860QMP-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AL8860QMP-13 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 AL8860QMP-13?
For technical support, including AL8860QMP-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AL8860QMP-13 requirements.
6.How does Aetrix verify that AL8860QMP-13 is sourced from the original manufacturer or authorized distributors?
All AL8860QMP-13 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 AL8860QMP-13 meets industry standards.
7.What is the process for return or replacement of AL8860QMP-13?
All AL8860QMP-13 units undergo pre-shipment inspection (PSI). If there is an issue with AL8860QMP-13, 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 AL8860QMP-13 part is unused and in its original packaging.
Return procedure for AL8860QMP-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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