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Diodes Incorporated AL1697-20CS7-13
- Part No.:
- AL1697-20CS7-13
- Manufacturer:
- Diodes Incorporated
- Category:
- LED Drivers
- Package:
- 8-SOIC (0.154", 3.90mm Width), 7 Leads
- Datasheet:
-
AL1697-20CS7-13.pdf
- Description:
- IC LED DRIVER OFFL TRIAC 2A 7SO
- Quantity:
- Payment:
- Shipping:
Inventory:4,095
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Product details
Overview
AL1697-20CS7-13 from Diodes Incorporated is a high-power-factor, boundary-conduction-mode (BCM) buck-boost LED driver IC with integrated 600 V / 2 A Super-Junction MOSFET, ±3% current sense tolerance, and NEMA SSL6-compliant dimming curve for mains-dimmable LED lamps. It operates from universal AC input, delivers precise constant current over wide line/load variations, and eliminates auxiliary winding requirements.
For engineers reviewing the AL1697-20CS7-13 datasheet, AL1697-20CS7-13 pinout, AL1697-20CS7-13 application, or AL1697-20CS7-13 equivalent, key selection considerations include internal 600 V MOSFET rating, thermal foldback at +145°C, 4 Ω RDS(ON), SO-7 package isolation, and compatibility with leading/trailing-edge dimmers down to 1% dimming depth.
Technical Context
The AL1697-20CS7-13 implements constant-on-time control in BCM to achieve >0.9 power factor and simplify EMI filtering. Its source-driver architecture reduces operating current to 170 µA at 4 kHz switching frequency while enabling single-winding inductor design.
Internal protections include cycle-by-cycle OCP triggered at 1 V on CS pin, UVLO with 14.5 V startup threshold and 8.5 V minimum operating voltage, and dual thermal response: linear current foldback above +145°C and latch-off OTP at +160°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VD Rating | 600 V - Enables direct connection to 230 VAC mains with margin; eliminates external HV MOSFET. |
| IDS (Continuous) | 2 A - Supports LED loads up to ~25 W at 230 VAC input with appropriate inductor sizing. |
| RDS(ON) | 4 Ω (typ) - Determines conduction loss and thermal rise; paired with 19 °C/W θJC for thermal management. |
| VREF (Current Sense) | 0.4 V (±3%) - Sets output current accuracy via R5; enables <±5% total LED current tolerance with proper layout. |
| tON_MAX | 3.6 µs (with 51 kΩ RT) - Configurable dimming depth limit; critical for achieving <1% minimum dim level with TRIAC dimmers. |
| VFB | 4.0 V (±2.4%) - Defines open-circuit protection threshold; sets resistor divider ratio for OVP trip point. |
| Startup Current | 130 µA - Minimizes power loss in startup network; allows use of high-value resistors (e.g., >1 MΩ) for efficiency. |
Pinout & Package
AL1697-20CS7-13 uses the SO-7 package with extended creepage distance between Drain (Pin 7) and low-voltage pins (Pins 1–4), enhancing reinforced isolation for Class II LED lamp designs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 VCC | IC Power Supply Input | Accepts clamped 15.5 V supply; powers internal circuitry and gate driver; requires local 10 µF decoupling. |
| 2 RT | Timing Resistor Connection | Sets maximum on-time (tON_MAX) for dimming control; 0.5 V reference enables precise resistor-based adjustment. |
| 3 COMP | Error Amplifier Output | Drives internal current loop; voltage range 0–4 V determines tON duration; used for dimming feedback integration. |
| 4 GND | Analog & Power Ground Reference | Common return for CS, FB, COMP, and VCC; must be low-impedance and separated from power ground near CS node. |
| 5 FB | Output Voltage Feedback | Detects LED string open condition; triggers hiccup-mode OVP when voltage exceeds 4.0 V. |
| 6 CS | Current Sense Input | Monitors MOSFET source current via R5; 1 V clamp prevents false OCP triggering during LEB period. |
| 7 D | Drain of Internal HV MOSFET | High-side switch node; connects to inductor and bridge rectifier output; requires careful PCB layout for EMI and dv/dt immunity. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 600 V / 2 A Super-Junction MOSFET | Reduces BOM count by eliminating external HV switch and auxiliary winding, lowering system cost and board area. |
| NEMA SSL6-compliant dimming curve | Ensures smooth, flicker-free dimming performance across leading-edge and trailing-edge dimmers without calibration. |
| Thermal foldback (TFP) at +145°C | Linearly reduces LED current above junction temperature threshold, maintaining safe operation without shutdown in enclosed fixtures. |
| Single-winding inductor topology | Eliminates transformer complexity and leakage inductance issues; simplifies magnetics design and improves efficiency. |
| Boundary conduction mode (BCM) operation | Enables natural zero-current switching, reducing EMI emissions and easing compliance with EN 55015 and FCC Part 15. |
Applications
| Dimmable A19 LED Bulbs | GU10 Retrofit Lamps |
|---|---|
|
Use Scenario: Replacement for incandescent bulbs in residential wall dimmer circuits using standard TRIAC dimmers. IC Role / Device Role / Timing Role: Primary constant-current controller implementing BCM buck-boost conversion with real-time dimming adaptation. Use Value: Delivers deep dimming to 1%, maintains >0.9 PF across 100–240 VAC, and sustains thermal foldback in enclosed E26 sockets. |
Use Scenario: Directional lighting in track and recessed fixtures with trailing-edge ELV dimmers. IC Role / Device Role / Timing Role: High-efficiency offline LED driver managing thermal load in compact aluminum housings with limited airflow. Use Value: Eliminates need for heatsink derating via TFP; achieves >85% efficiency at 12 W output with SO-7 thermal resistance of 123 °C/W. |
| BR30 Floodlight Modules | PAR38 Outdoor Spotlights |
|
Use Scenario: High-lumen indoor floodlights requiring robust surge immunity and stable current under voltage sags. IC Role / Device Role / Timing Role: System-level current regulator with cycle-by-cycle OCP and UVLO recovery to maintain light output during brownouts. Use Value: Withstands 600 V drain rating and 1 µA IDSS leakage, enabling reliable operation in 277 VAC commercial installations. |
Use Scenario: Wet-location outdoor lighting exposed to ambient temperatures from –40°C to +105°C. IC Role / Device Role / Timing Role: Dimmable LED driver with extended thermal protection and wide ambient operating range (–40°C to +105°C). Use Value: OTP latch-off at +160°C prevents thermal runaway; SO-7 package meets IPC-9592B creepage requirements for outdoor IP65 enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LED driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AL1697-30BAS7-13 | 400 V / 3 A MOSFET, 2.8 Ω RDS(ON) | Better suited for lower-voltage 120 VAC systems with higher current demands (>2 A) | Select when designing for North American line voltage with >20 W output and lower conduction loss priority. |
| AL1697-40DS7-13 | 670 V / 4 A MOSFET, 1.8 Ω RDS(ON) | Targeted for high-power 230/277 VAC lamps >30 W and demanding thermal environments | Choose for industrial/commercial fixtures requiring higher current headroom and lower RDS(ON) at elevated temperatures. |
Compared with AL1697-30BAS7-13 and AL1697-40DS7-13, the AL1697-20CS7-13 offers optimal balance of 600 V breakdown margin and 2 A current capability for universal-input LED lamps up to 25 W, minimizing both overvoltage risk and conduction loss without overspecifying MOSFET rating.
Availability
AL1697-20CS7-13 is available at Aetrix Electronics and suitable for dimmable LED bulb manufacturing, GU10 retrofit lamp production, and BR30 floodlight module assembly requiring stable component supply and long-term lifecycle support.
Supply support for AL1697-20CS7-13 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, specializing in power management, signal integrity, and LED lighting solutions since 1964.
The AL1697 belongs to Diodes' high-efficiency, integrated LED driver product line designed specifically for cost-sensitive, dimmable offline LED lamp applications with stringent regulatory and thermal constraints.
FAQ
What dimmer types does AL1697-20CS7-13 support?
The AL1697-20CS7-13 supports both leading-edge (TRIAC) and trailing-edge (ELV) dimmers, achieving deep dimming down to 1% with NEMA SSL6-compliant curve. Its adaptive tON_MAX control ensures stable operation across diverse dimmer brands and aging characteristics without external calibration.
How is thermal foldback implemented in AL1697-20CS7-13?
Thermal foldback activates at +145°C typical junction temperature, linearly reducing the internal 0.4 V current reference to proportionally lower LED output current. This self-adaptive method prevents thermal runaway while maintaining light output-unlike latch-off OTP-which resumes normal operation once temperature drops below threshold.
Why does AL1697-20CS7-13 use a single-winding inductor?
The AL1697-20CS7-13 employs source-driver architecture and novel tOFF detection to eliminate the need for an auxiliary winding. This reduces component count, magnetics complexity, and EMI from coupled inductors-enabling compact, low-cost buck-boost LED drivers with simplified PCB layout and improved reliability.
What protection features are integrated into AL1697-20CS7-13?
AL1697-20CS7-13 integrates UVLO (14.5 V start, 8.5 V hold), cycle-by-cycle OCP (1 V CS clamp), leading-edge blanking, output open/short protection (via FB pin), thermal foldback (+145°C), and over-temperature latch-off (+160°C). All functions operate autonomously without external components.
AL1697-20CS7-13 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:
- Active
- Type:
- AC DC Offline Switcher
- Topology:
- Step-Down (Buck), Step-Up (Boost)
- Internal Switch(s):
- Yes
- Number of Outputs:
- 1
- Voltage - Supply (Min):
- 8.5V
- Voltage - Supply (Max):
- 18V
- Voltage - Output:
- 600V
- Current - Output / Channel:
- 2A
- Frequency:
- -
- Dimming:
- Triac
- Applications:
- -
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 7-SO
AL1697-20CS7-13 FAQ
1.How can I place an order for AL1697-20CS7-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for AL1697-20CS7-13 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 AL1697-20CS7-13 reliable?
The price and inventory of AL1697-20CS7-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AL1697-20CS7-13 is usually 5 days.
3.What payment methods are accepted for AL1697-20CS7-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AL1697-20CS7-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AL1697-20CS7-13?
AL1697-20CS7-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AL1697-20CS7-13 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 AL1697-20CS7-13?
For technical support, including AL1697-20CS7-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AL1697-20CS7-13 requirements.
6.How does Aetrix verify that AL1697-20CS7-13 is sourced from the original manufacturer or authorized distributors?
All AL1697-20CS7-13 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 AL1697-20CS7-13 meets industry standards.
7.What is the process for return or replacement of AL1697-20CS7-13?
All AL1697-20CS7-13 units undergo pre-shipment inspection (PSI). If there is an issue with AL1697-20CS7-13, 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 AL1697-20CS7-13 part is unused and in its original packaging.
Return procedure for AL1697-20CS7-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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