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Diodes Incorporated AL1676-10BS7-13
- Part No.:
- AL1676-10BS7-13
- Manufacturer:
- Diodes Incorporated
- Category:
- LED Drivers
- Package:
- 8-SOIC (0.154", 3.90mm Width), 7 Leads
- Datasheet:
-
AL1676-10BS7-13.pdf
- Description:
- IC LED DRIVER OFFL 1A 7SO
- Quantity:
- Payment:
- Shipping:
Inventory:3,865
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Product details
Overview
AL1676-10BS7-13 from Diodes Incorporated is a universal-input (85–277 VAC), high-power-factor (PF >0.9), boundary-conduction-mode (BCM) buck LED driver IC with integrated 500 V/1.0 A high-voltage MOSFET, ±3% output current tolerance, 12 Ω RDS(ON), and SO-7 package - designed for retrofit LED lamps and LED tubes requiring compact, low-BOM, thermally robust constant-current solutions.
For engineers reviewing the AL1676-10BS7-13 datasheet, AL1676-10BS7-13 pinout, AL1676-10BS7-13 application, or AL1676-10BS7-13 equivalent, this page delivers verified functional role (integrated buck LED driver), key thermal foldback behavior (+150°C regulation), protection set (UVLO, OCP, OTP, TFP, OSP, OVP), and SO-7 terminal mapping - all confirmed from Diodes DS38290 Rev. 2-3.
Technical Context
The AL1676-10BS7-13 implements constant-on-time (COT) control to achieve >0.9 power factor across universal AC input, using source-driver architecture to reduce operating current to 170 µA at 5 kHz switching. Its BCM operation eliminates need for auxiliary winding while easing EMI compliance.
It integrates a 500 V/1.0 A MOSFET with 12 Ω RDS(ON), supports closed-loop constant-current regulation via 0.400 V internal VREF, and employs adaptive thermal foldback (linear IOUT reduction above +150°C) plus latched OTP shutdown at +170°C - enabling stable operation in enclosed LED lamp environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 85–277 VAC universal input - enables single-design compatibility across global mains without requalification. |
| Output Current Accuracy | ±3% tolerance - ensures consistent LED brightness and lifetime across line/load variations. |
| Integrated MOSFET | 500 V VDSS, 1.0 A ID, 12 Ω RDS(ON) - supports ≤7 W LED loads at ≥20 V output with self-contained high-side switching. |
| Thermal Regulation | +150°C typical foldback onset - linearly reduces output current to limit junction temperature rise in thermally constrained fixtures. |
| Protections | UVLO (14.5 V start, 8.5 V stop), cycle-by-cycle OCP, OTP latch, OSP low-frequency mode, OVP/OSP, TFP - full-system fault coverage without external circuitry. |
| Efficiency | >90% - minimizes thermal stress and extends driver lifetime in sealed LED lamp enclosures. |
| Startup Current | 100 µA - enables use of high-value startup resistors to reduce standby power loss. |
Pinout & Package
AL1676-10BS7-13 is housed in a thermally enhanced SO-7 package (6.9 mm × 3.9 mm, 1.27 mm pitch), optimized for surface-mount assembly and PCB heat spreading per Diodes-recommended pad layout (E = 1.27 mm, E1 = 2.54 mm).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 VCC | IC power supply input | Accepts 8.5–18 V DC; clamped at 15.5 V; powers internal circuitry and gate driver after startup. |
| 2 ROVP | Output overvoltage sense reference | Connects to voltage divider from LED string; 0.5 V internal reference sets open-circuit protection threshold. |
| 3 COMP | Error amplifier compensation node | External RC network stabilizes current regulation loop; critical for load/line transient response. |
| 4 GND | Power and signal ground reference | Common return for CS sensing, gate drive, and internal bias; must be low-impedance PCB plane. |
| 5 CS | Current sense input | Monitors MOSFET source current via R5; 0.8 V clamp prevents false OCP triggering during LEB period. |
| 6 NC | No connection | Unbonded die pad; must remain floating - no trace or copper pour connected. |
| 7 D | Drain of internal HV MOSFET | High-side switch output; connects directly to buck inductor; rated 500 V, 1.0 A continuous. |
Key Features
| Feature | Design Value |
|---|---|
| Single-winding inductor topology | Eliminates auxiliary winding and associated components - reduces BOM count by ≥3 parts and simplifies transformer design. |
| Boundary conduction mode (BCM) | Enables natural zero-current switching, lowering EMI emissions and easing EN55015/IEC61000-3-2 Class C compliance. |
| Tight ±3% CC accuracy | Maintains LED luminous flux within specification across temperature (-40°C to +105°C ambient) and line voltage variation. |
| Thermal foldback + OTP latch | Prevents thermal runaway: linear current reduction above +150°C, then hard shutdown at +170°C - protects LEDs and driver under sustained overload. |
| Low 100 µA startup current | Allows use of MΩ-range startup resistors - cuts standby power to <0.3 W in compliant LED lamp designs. |
Applications
| Retrofit LED Lamps | LED Tube Lighting |
|---|---|
|
Use Scenario: Direct replacement of incandescent or fluorescent tubes in existing fixtures with integrated AC-DC LED driver. IC Role / Device Role / Timing Role: Primary buck controller and high-voltage switch - regulates constant current to parallel-series LED strings from rectified AC. Use Value: SO-7 thermal performance and 500 V MOSFET enable safe operation at 277 VAC line, while ±3% CC accuracy ensures uniform brightness across lamp batches. |
Use Scenario: Linear LED tube with end-cap driver housing, requiring compact, isolated, and EMC-compliant AC-DC conversion. IC Role / Device Role / Timing Role: Boundary-mode buck controller managing inductor current zero-crossing detection without auxiliary winding - defining tOFF timing. Use Value: BCM operation and integrated MOSFET reduce component count and board area by >25%, meeting T8/T5 form factor constraints. |
| High-Voltage DC-DC LED Driver | General-Purpose Constant Current Source |
|
Use Scenario: Industrial signage or architectural lighting powered from 277 VAC or 347 VAC distribution systems. IC Role / Device Role / Timing Role: High-voltage buck stage delivering regulated current to long LED strings - leveraging 500 V drain rating and thermal foldback. Use Value: 500 V VDSS and +150°C foldback allow direct operation from 277 VAC without external HV FET or heatsink - reducing system cost and footprint. |
Use Scenario: Non-LED applications requiring precise, programmable constant current (e.g., laser diode bias, sensor excitation). IC Role / Device Role / Timing Role: Closed-loop current regulator using external R5 and ROVP divider - configurable output current via 0.400 V VREF. Use Value: ±3% current accuracy and wide 85–277 VAC input range support stable current sourcing across variable input conditions without feedback redesign. |
Availability
AL1676-10BS7-13 is available at Aetrix Electronics and suitable for retrofit LED lamps, LED tube lighting, and high-voltage DC-DC LED drivers requiring stable component supply, RoHS-compliant packaging, and long-term industrial availability.
Supply support for AL1676-10BS7-13 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 devices for power management, signal integrity, and connectivity applications.
The AL1676 product line delivers highly integrated, thermally robust AC-DC LED drivers targeting cost-sensitive, space-constrained lighting applications - emphasizing low-BOM count, regulatory compliance, and field reliability.
FAQ
What is the maximum continuous output power supported by AL1676-10BS7-13?
The AL1676-10BS7-13 supports up to 7 W output power, as specified in Diodes' ordering guide and validated by its 1.0 A continuous drain current rating, 500 V MOSFET breakdown voltage, and SO-7 thermal limits (θJA = 123 °C/W). This aligns with recommended operation at ≥20 V minimum output voltage and ≤120 mA maximum output current.
How does the thermal foldback function behave in AL1676-10BS7-13?
At junction temperatures above +150°C (typical), AL1676-10BS7-13 linearly reduces its internal 0.400 V reference voltage, thereby proportionally decreasing output current to limit power dissipation. This self-adaptive behavior continues until temperature drops below the regulation threshold - distinct from the latched +170°C OTP shutdown.
Can AL1676-10BS7-13 operate without an auxiliary winding?
Yes - AL1676-10BS7-13 uses a novel source-driver technique and internal ZCD detection to determine tOFF without an auxiliary winding. This eliminates three external components (auxiliary winding, rectifier, filter capacitor), directly enabling the single-winding inductor topology and reduced BOM count.
What protection features are integrated into AL1676-10BS7-13?
AL1676-10BS7-13 integrates six protections: under-voltage lockout (UVLO), leading-edge blanking (LEB), cycle-by-cycle over-current protection (OCP), output open/short protection (OVP/OSP), thermal foldback (TFP), and over-temperature protection (OTP) with latched shutdown. All are implemented internally with no external components required.
AL1676-10BS7-13 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width), 7 Leads
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- AC DC Offline Switcher
- Topology:
- Step-Down (Buck)
- Internal Switch(s):
- Yes
- Number of Outputs:
- 1
- Voltage - Supply (Min):
- 8.5V
- Voltage - Supply (Max):
- 18V
- Voltage - Output:
- 500V
- Current - Output / Channel:
- 1A
- Frequency:
- -
- Dimming:
- -
- Applications:
- -
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 7-SO
AL1676-10BS7-13 FAQ
1.How can I place an order for AL1676-10BS7-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for AL1676-10BS7-13 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 AL1676-10BS7-13 reliable?
The price and inventory of AL1676-10BS7-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AL1676-10BS7-13 is usually 5 days.
3.What payment methods are accepted for AL1676-10BS7-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AL1676-10BS7-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AL1676-10BS7-13?
AL1676-10BS7-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AL1676-10BS7-13 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 AL1676-10BS7-13?
For technical support, including AL1676-10BS7-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AL1676-10BS7-13 requirements.
6.How does Aetrix verify that AL1676-10BS7-13 is sourced from the original manufacturer or authorized distributors?
All AL1676-10BS7-13 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 AL1676-10BS7-13 meets industry standards.
7.What is the process for return or replacement of AL1676-10BS7-13?
All AL1676-10BS7-13 units undergo pre-shipment inspection (PSI). If there is an issue with AL1676-10BS7-13, 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 AL1676-10BS7-13 part is unused and in its original packaging.
Return procedure for AL1676-10BS7-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AL1676-10BS7-13 Tags
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