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Diodes Incorporated AL8862SP-13
- Part No.:
- AL8862SP-13
- Manufacturer:
- Diodes Incorporated
- Category:
- LED Drivers
- Package:
- 8-SOIC (0.154", 3.90mm Width) Exposed Pad
- Datasheet:
-
AL8862SP-13.pdf
- Description:
- IC LED DRIVER RGLTR PWM 1A 8SO
- Quantity:
- Payment:
- Shipping:
Inventory:16,162
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Product details
Overview
AL8862SP-13 from Diodes Incorporated is a 60V, 1A step-down DC/DC LED driver IC with integrated 60V NDMOS switch, high-side current sensing, and single-pin analog/PWM dimming control via the CTRL pin. It operates from 5V–60V input, delivers ±4% output current accuracy, and supports up to 1MHz switching for compact external component selection. Used in commercial lighting systems where uniform LED brightness and board space reduction are critical.
For engineers reviewing the AL8862SP-13 datasheet, AL8862SP-13 pinout, AL8862SP-13 application, or AL8862SP-13 equivalent, key selection considerations include its adjustable constant-current output (via RSET), dual-mode dimming interface, thermal shutdown at +150°C, and SO-8EP package with exposed thermal pad for industrial-grade thermal management.
Technical Context
The AL8862SP-13 implements hysteresis-based current-mode control with internal 100mV SET threshold and ±13% hysteresis, enabling stable constant-current regulation without external compensation. Its integrated 60V/0.4Ω NDMOS switch and high-side current-sense architecture eliminate ballast resistors and support series-connected LED strings.
Dimming is implemented through a multifunction CTRL pin: analog control (0.4–2.5V) linearly scales output current from 10% to 100%, while PWM signals (0.3V/2.6V thresholds, <1μs transitions) enable digital brightness adjustment. Soft-start time is programmable via external capacitor (1.5ms/nF) from CTRL to GND, with default 0.1ms.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 5V to 60V - supports wide-range industrial and automotive-supply inputs without pre-regulation. |
| Max Output Current | 1A - set externally via RSET; enables driving high-brightness LED strings with minimal external components. |
| Current Accuracy | ±4% - ensures consistent luminance across multiple units and temperature ranges (−40°C to +105°C). |
| Switching Frequency | Up to 1MHz - allows use of small 33–100μH inductors and compact ceramic input capacitors (≥10μF X7R). |
| CTRL Pin Function | Single-pin on/off + analog/PWM dimming - eliminates need for separate enable and dimming circuitry, reducing BOM count. |
| Thermal Protection | +150°C shutdown with +30°C hysteresis - prevents latch-up during sustained overloads or poor heatsinking. |
| Package Type | SO-8EP - exposed pad enhances thermal dissipation (θJA = 58°C/W) for continuous 1A operation in ambient up to +105°C. |
Pinout & Package
AL8862SP-13 is packaged in SO-8EP (exposed pad), optimized for thermal performance in high-current LED driver applications. The exposed pad (EP) must be soldered to a PCB thermal plane for effective junction-to-board heat transfer.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 (SET) | Current sense reference input | Connects to VIN via RSET to define nominal LED current (IOUT ≈ 1.0/RSET); sets 100mV threshold with ±13% hysteresis. |
| 2, 7 (GND) | Power and signal ground | Dual ground pins minimize ground bounce; EP pad must be connected to same GND net for thermal and electrical integrity. |
| 3 (NC) | No connection | Internally unconnected; must remain floating - no routing or soldering allowed. |
| 4 (VIN) | Main power input | Accepts 5–60V; requires ≥10μF X7R ceramic decoupling capacitor placed within 3mm of pin for EMI suppression and stability. |
| 5, 6 (SW) | Switch node | Drives external inductor and freewheeling diode; track length must be minimized to reduce radiated emissions and voltage overshoot. |
| 8 (CTRL) | Multi-function control | Enables on/off (≤0.3V), analog dimming (0.4–2.5V), full-on (>2.6V), or PWM dimming; soft-start capacitor connects here to GND. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 60V NDMOS switch | Eliminates external MOSFET and gate driver, reducing solution size and bill-of-materials cost by ≥30% vs discrete buck controllers. |
| Inherent open-circuit LED protection | Auto-shutdown when LED string opens - prevents SW pin overvoltage and protects downstream components without external sensing circuitry. |
| LED short-circuit protection | Monitors SW node voltage during off-time; disables switching if VSW remains near VIN, preventing thermal runaway during LED shorts. |
| Current-sense resistor short protection | Detects RSET short-circuit (VSET ≈ 0V) and forces shutdown - avoids uncontrolled current surge and device destruction. |
| High efficiency up to 97% | Achieved via low RDS(on) (0.4Ω), synchronous-free architecture, and optimized gate drive - reduces thermal load in enclosed fixtures. |
Applications
| Commercial Lighting | Industrial Control Panels |
|---|---|
|
Use Scenario: Constant-current driver for 3–12 white LED strings in recessed downlights and panel-mounted indicator arrays. IC Role / Device Role / Timing Role: Primary LED current regulator with built-in hysteresis control loop; provides stable 1A output independent of input ripple or LED VF variation. Use Value: Enables uniform brightness across multi-LED arrays without binning or per-string resistors, reducing assembly cost and calibration effort. |
Use Scenario: Brightness-controlled status lighting in factory HMIs, PLC enclosures, and safety-rated operator interfaces. IC Role / Device Role / Timing Role: Dimmable LED driver interfaced directly to microcontroller GPIO (3.3V/5V logic) for analog or PWM control without level-shifting. Use Value: Single-pin CTRL simplifies firmware design and PCB layout; thermal shutdown ensures reliability in unventilated metal enclosures. |
| Architectural Accent Lighting | Appliance Interior Lighting |
|
Use Scenario: Low-profile LED strip drivers embedded in aluminum extrusions for façade and cove lighting. IC Role / Device Role / Timing Role: High-frequency (up to 1MHz) buck controller enabling <4mm² inductor footprint and minimal EMI filtering. Use Value: Reduces total solution height and area by >40% vs 250kHz alternatives, critical for tight mechanical envelopes in architectural modules. |
Use Scenario: Dimmable interior cabin lighting in refrigerators, ovens, and laundry appliances with wide-input 12–48V DC bus. IC Role / Device Role / Timing Role: Input-voltage-tolerant LED driver supporting variable supply from appliance SMPS or battery-backed rails. Use Value: Operates stably from 5V–60V with no external LDO needed - accommodates brownout conditions and aging power supplies. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar constant-current LED driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AL8863SP-13 | Same pinout and function but rated for 1.2A max output and higher 1.2A current-sense threshold (120mV); slightly higher quiescent current (550µA). | Supports higher-power LED strings; requires recalculation of RSET (IOUT ≈ 1.2/RSET) and verification of thermal margin at 1.2A. | Select when >1A LED current is required and board layout allows same SO-8EP footprint. |
| MPQ4425AGU-AEC1-P | Automotive-grade 1A buck LED driver (AEC-Q100 Grade 1); includes spread-spectrum frequency modulation and enhanced EMI filtering. | Targeted for automotive interior lighting; lacks CTRL pin analog dimming - uses dedicated DIM pin with 0–2.5V range only. | Choose for automotive programs requiring AEC-Q100 qualification and stricter EMI compliance; not drop-in due to different pin mapping and control interface. |
Compared with AL8862SP-13, AL8863SP-13 offers higher current headroom but identical thermal and package constraints, while MPQ4425AGU-AEC1-P adds automotive robustness and EMI features at the cost of dimming flexibility and non-drop-in compatibility.
Availability
AL8862SP-13 is available at Aetrix Electronics and suitable for commercial lighting, industrial control panels, architectural accent lighting, and appliance interior lighting requiring stable component supply and long-term production continuity.
Supply support for AL8862SP-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 power management, signal integrity, and connectivity applications.
The AL8862SP-13 belongs to Diodes' LED driver product line, engineered specifically for high-efficiency, thermally robust constant-current regulation in industrial and commercial solid-state lighting systems.
FAQ
What is the minimum input voltage required for AL8862SP-13 to start switching?
The AL8862SP-13 has an under-voltage lockout (UVLO) threshold of 4.8V (typical) with 200mV hysteresis. It begins switching only when VIN rises above 4.8V and remains active until VIN drops below 4.6V. Below 4.6V, the internal switch is disabled and quiescent current drops to <1µA.
Can AL8862SP-13 drive LEDs in parallel configurations?
No - AL8862SP-13 is designed exclusively for series-connected LED strings. Its high-side current-sensing architecture regulates total string current, and parallel configurations would cause unequal current sharing and potential thermal runaway due to VF mismatch between LEDs.
How does the CTRL pin behave during PWM dimming at frequencies above 1kHz?
At PWM frequencies >1kHz, dimming resolution degrades due to interaction with the internal 250–1000kHz switching frequency. For example, at 10kHz PWM, accuracy falls below 5% for duty cycles <10%. Diodes recommends ≤500Hz for <1% error across 1–100% range, with optimal performance at 100Hz.
Is the SO-8EP package RoHS-compliant and halogen-free?
Yes - AL8862SP-13 uses a green molding compound with zero intentionally added lead, bromine <900ppm, chlorine <900ppm (Br+Cl <1500ppm), and antimony <1000ppm, meeting EU RoHS 2015/863/EU and Diodes' "Green" definition per datasheet Note 3.
AL8862SP-13 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm 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):
- 5V
- Voltage - Supply (Max):
- 60V
- Voltage - Output:
- -
- Current - Output / Channel:
- 1A
- Frequency:
- 1MHz
- Dimming:
- Analog, PWM
- Applications:
- Commercial & Industrial Lighting
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SO-EP
AL8862SP-13 FAQ
1.How can I place an order for AL8862SP-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for AL8862SP-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 AL8862SP-13 reliable?
The price and inventory of AL8862SP-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AL8862SP-13 is usually 5 days.
3.What payment methods are accepted for AL8862SP-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AL8862SP-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AL8862SP-13?
AL8862SP-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AL8862SP-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 AL8862SP-13?
For technical support, including AL8862SP-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AL8862SP-13 requirements.
6.How does Aetrix verify that AL8862SP-13 is sourced from the original manufacturer or authorized distributors?
All AL8862SP-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 AL8862SP-13 meets industry standards.
7.What is the process for return or replacement of AL8862SP-13?
All AL8862SP-13 units undergo pre-shipment inspection (PSI). If there is an issue with AL8862SP-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 AL8862SP-13 part is unused and in its original packaging.
Return procedure for AL8862SP-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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