My Inquiry
My Account
Diodes Incorporated AL1677-10BS-13
- Part No.:
- AL1677-10BS-13
- Manufacturer:
- Diodes Incorporated
- Category:
- LED Drivers
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
AL1677-10BS-13.pdf
- Description:
- IC LED DRIVER OFFL NO 1A 8SO
- Quantity:
- Payment:
- Shipping:
Inventory:2,573
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
AL1677-10BS-13 from Diodes Incorporated is a universal AC-input (85–277 VAC), boundary conduction mode (BCM) buck LED driver IC with integrated 1 A/500 V MOSFET, ±3% current accuracy, 90% peak efficiency, and thermal fold-back protection. It delivers constant current for retrofit GU10/bulb LED lamps up to 10 W without auxiliary winding or external high-voltage switch.
For engineers reviewing the AL1677-10BS-13 datasheet, AL1677-10BS-13 pinout, AL1677-10BS-13 application, or AL1677-10BS-13 equivalent, key selection criteria include integrated MOSFET rating (1 A/500 V), BCM operation for EMI reduction, UVLO/OTP/LED open/short protection setpoints, and SO-8 package thermal performance in enclosed lamp housings.
Technical Context
The AL1677-10BS-13 implements primary-side sensing in BCM topology to eliminate auxiliary winding feedback, enabling accurate constant-current regulation across universal AC input (85–277 VAC) and wide load range. Its internal 1 A/500 V MOSFET supports direct high-voltage switching without external gate drivers or HV FETs.
Protection functions include under-voltage lockout (UVLO) at 12.5 V, over-temperature protection (OTP) with automatic recovery, LED short-circuit detection via CS pin voltage threshold, and open-LED shutdown triggered by sustained zero current sense. Thermal fold-back reduces output current linearly above 125 °C junction temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 85–277 VAC universal line; enables single-BOM design for global mains compatibility without hardware change. |
| Output Current Accuracy | ±3% over line/load/temperature; ensures consistent lumen output across operating conditions without trimming. |
| Peak Efficiency | 90% at full load; reduces thermal stress and extends electrolytic capacitor lifetime in compact lamp enclosures. |
| Integrated MOSFET | 1 A / 500 V rated; eliminates external HV switch and associated gate drive circuitry, cutting BOM count by ≥3 components. |
| Thermal Fold-back Threshold | 125 °C junction; progressively lowers LED current to prevent thermal runaway in sealed GU10 fixtures with limited airflow. |
| Protection Features | UVLO (12.5 V), OTP (automatic recovery), LED short/open detection; enables Class II, SELV-compliant lamp designs without secondary-side monitoring. |
Pinout & Package
AL1677-10BS-13 is housed in a standard SO-8 package with exposed thermal pad (EP) for enhanced heat dissipation in high-density LED lamp PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND | Power and signal reference ground | Common return path for internal controller, MOSFET source, and current sense amplifier; must connect to low-impedance thermal pad plane. |
| VCC | Internal LDO input and bias supply | Receives rectified DC from startup resistor network; powers internal circuitry after UVLO threshold is exceeded. |
| CS | Current sense input | Monitors voltage drop across external sense resistor to regulate LED current; supports primary-side CC control without optocoupler or auxiliary winding. |
| OUT | Drain of integrated MOSFET | High-voltage switching node connected to buck inductor; rated for 500 V blocking and 1 A RMS current. |
| NC | No-connect terminal | Internally unconnected; must remain floating-no external connection or PCB trace allowed. |
Key Features
| Feature | Design Value |
|---|---|
| Boundary Conduction Mode (BCM) control | Enables zero-current switching to reduce EMI emissions and simplify EMC filter design for Class B compliance. |
| Integrated 1 A/500 V MOSFET | Eliminates need for external HV switch, gate driver, and associated layout isolation-reducing board area by ≥25% vs discrete solutions. |
| Primary-side constant current regulation | Removes optocoupler, TL431, and auxiliary winding-cutting BOM cost by $0.12–$0.18 per unit in high-volume lamp production. |
| Comprehensive protection suite | UVLO, OTP, LED short/open, and thermal fold-back collectively enable >50,000-hour MTBF in ambient temperatures up to 85 °C. |
Applications
| Retrofit LED Bulbs | GU10 Spotlights |
|---|---|
Use Scenario: Direct replacement of incandescent/halogen GU10 lamps in residential and commercial downlights. IC Role / Device Role / Timing Role: Constant-current buck controller with integrated HV MOSFET and primary-side regulation. Use Value: Enables compact, fanless 10 W LED module with <15 mm height and no external HV switch-meeting IEC 62560 mechanical envelope requirements. | Use Scenario: High-CRI directional lighting in retail display and museum accent fixtures. IC Role / Device Role / Timing Role: Line-regulated CC driver maintaining ±3% current stability across 85–277 VAC input variation. Use Value: Ensures uniform luminance and color point across global installations without manual calibration or regional BOM variants. |
| Enclosed A19 Lamps | Industrial LED Tubes |
Use Scenario: Sealed A19 retrofit lamps operating in thermally constrained ceiling fixtures. IC Role / Device Role / Timing Role: Thermal fold-back regulated driver limiting junction temperature to ≤125 °C under sustained 85 °C ambient. Use Value: Prevents premature LED lumen depreciation and electrolytic capacitor failure-extending rated life to 25,000 hours at 85 °C ambient. | Use Scenario: T8 LED tube replacements with passive cooling and no active ventilation. IC Role / Device Role / Timing Role: Universal-input buck converter delivering stable 180 mA CC output with <±5% ripple. Use Value: Eliminates need for external current-setting resistors or trim pots-reducing assembly time and field failure risk from solder joint fatigue. |
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 |
|---|---|---|---|
| AL1677-08BS-13 | Integrated 0.8 A/500 V MOSFET; max output current 120 mA | Suitable for ≤8 W lamps; lower thermal derating margin at 85 °C ambient | Select when output power budget is ≤8 W and board space allows tighter thermal layout. |
| AL1677-20BS-13 | Integrated 2 A/500 V MOSFET; max output current 240 mA | Supports ≤15 W lamps; requires larger copper pour on thermal pad for 2 A RMS conduction | Choose for higher-power tubes or multi-string configurations where 180 mA is insufficient. |
Compared with AL1677-08BS-13 and AL1677-20BS-13, the AL1677-10BS-13 provides optimal balance of thermal headroom, output current (180 mA), and SO-8 footprint for 10 W retrofit lamps-avoiding overdesign cost while ensuring reliable operation at full-rated ambient temperature.
Availability
AL1677-10BS-13 is available at Aetrix Electronics and suitable for retrofit LED bulbs, GU10 spotlights, and enclosed A19 lamps requiring stable component supply with guaranteed long-term manufacturability.
Supply support for AL1677-10BS-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 manufacturer of discrete semiconductors and analog ICs, headquartered in Plano, Texas, with design centers across Asia and manufacturing in China, Taiwan, and the U.S.
The AL1677 product line targets cost-sensitive, high-volume LED lighting applications requiring integrated HV switching, primary-side regulation, and comprehensive protection-all in standard SO-8 packaging.
FAQ
What is the maximum continuous output current supported by AL1677-10BS-13?
The AL1677-10BS-13 supports a maximum continuous LED output current of 180 mA, verified under 85 °C ambient temperature with SO-8 thermal pad soldered to ≥100 mm² 2-oz copper. This rating assumes proper heatsinking and operation within the specified 85–277 VAC input range and BCM switching frequency limits.
Does AL1677-10BS-13 require an external MOSFET for operation?
No. The AL1677-10BS-13 integrates a fully rated 1 A/500 V MOSFET, eliminating the need for any external high-voltage switching device. External components are limited to the buck inductor, output capacitor, current sense resistor, and startup network-enabling minimal BOM count.
How does thermal fold-back function in AL1677-10BS-13?
Thermal fold-back activates when the internal junction temperature exceeds 125 °C, linearly reducing output current to maintain safe thermal operation. At 150 °C, current drops to ~50% of nominal; full shutdown occurs only during sustained OTP event. Recovery is automatic once temperature falls below 115 °C hysteresis threshold.
Can AL1677-10BS-13 be used in triac-dimmable LED lamps?
No. The AL1677-10BS-13 lacks triac dimming interface circuitry and is not compatible with leading-edge or trailing-edge phase-cut dimmers. It is designed exclusively for non-dimmable, constant-output LED lamps. For dimmable applications, Diodes' AP1684A or AP1685 series should be evaluated.
AL1677-10BS-13 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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):
- 16.2V
- Voltage - Output:
- 15V
- Current - Output / Channel:
- 1A
- Frequency:
- -
- Dimming:
- No
- Applications:
- Lighting
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SO
AL1677-10BS-13 FAQ
1.How can I place an order for AL1677-10BS-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for AL1677-10BS-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 AL1677-10BS-13 reliable?
The price and inventory of AL1677-10BS-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AL1677-10BS-13 is usually 5 days.
3.What payment methods are accepted for AL1677-10BS-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AL1677-10BS-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AL1677-10BS-13?
AL1677-10BS-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AL1677-10BS-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 AL1677-10BS-13?
For technical support, including AL1677-10BS-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AL1677-10BS-13 requirements.
6.How does Aetrix verify that AL1677-10BS-13 is sourced from the original manufacturer or authorized distributors?
All AL1677-10BS-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 AL1677-10BS-13 meets industry standards.
7.What is the process for return or replacement of AL1677-10BS-13?
All AL1677-10BS-13 units undergo pre-shipment inspection (PSI). If there is an issue with AL1677-10BS-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 AL1677-10BS-13 part is unused and in its original packaging.
Return procedure for AL1677-10BS-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AL1677-10BS-13 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
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…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
LDO regulator guide covering low dropout voltage, power dissipation, thermal design, PSRR, output noise, capacitor stability, adjustable LDO circuits, LDO vs buck converter and datasheet selection chec…
Conditional Access Module guide covering CAM meaning, CI/CI+ interface, smart card authorization, DVB security workflow, TV and set-top box compatibility, internal electronics, ESD protection, connecto…
Guide to electronic component obsolescence covering EOL risk, PCN/PDN notices, last-time buy planning, replacement options, form-fit-function validation, counterfeit risk and BOM lifecycle management.
18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…
Hall effect sensor guide covering working principle, linear and digital sensors, Arduino circuits, current sensing, speed detection, automotive applications, A3144 examples, signal filtering and datash…
Product Change Notification guide for electronic components, covering PCN meaning, PCN vs PDN/EOL, common change types, risk levels, form-fit-function review, engineering validation, BOM control, LTB/L…
A practical guide to blend door actuators, covering HVAC function, symptoms, location, AC and heater issues, reset and calibration, replacement cost, electrical diagnosis, compatibility checks, and rep…
