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Diodes Incorporated AL3065AS16-13
- Part No.:
- AL3065AS16-13
- Manufacturer:
- Diodes Incorporated
- Category:
- LED Drivers
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
AL3065AS16-13.pdf
- Description:
- IC LED DRVR CTRLR PWM 250MA 16SO
- Quantity:
- Payment:
- Shipping:
Inventory:1,760
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Product details
Overview
AL3065AS16-13 from Diodes Incorporated is a discontinued 4-channel boost LED controller for WLED backlight systems, operating from 4.5V to 33V input, delivering up to 400mA per channel with ±0.5% typical current matching, adjustable 0.1–1MHz switching frequency, and support for direct PWM, PWM-to-analog, and DC-to-analog dimming modes in SO-16 package.
For engineers reviewing the AL3065AS16-13 datasheet, AL3065AS16-13 pinout, AL3065AS16-13 application, or AL3065AS16-13 equivalent, key selection considerations include its four-channel high-precision current sink architecture, OVP/OTP/LED open-short protection suite, 1/10,000 minimum PWM duty cycle at 100Hz, and compatibility with LCD monitor, TV, and display module backlight designs.
Technical Context
The AL3065AS16-13 integrates a fixed-frequency current-mode boost controller with four independent high-side current sinks, each regulated via external ISET resistor and monitored by dedicated CHx pins. Its internal 5V LDO powers gate drive (OUT), compensation (COMP), and analog circuitry, while CS pin enables cycle-by-cycle overcurrent protection at 540mV threshold.
Dimming is implemented through three mutually exclusive paths: ADIM pin voltage (0–1.5V) for DC analog control, RC-filtered DIM signal for PWM-to-analog conversion, or direct logic-level PWM on DIM with ADIM tied to VCC. Protection logic includes latched OVP shutdown at 3.2V, thermal shutdown at +160°C, and LED short detection at ~8.7V on CHx pins.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.5V to 33V - supports wide-range industrial and automotive supply rails without pre-regulation. |
| LED Channel Current | 20mA to 400mA - programmable per channel via ISET resistor; 250mA continuous, 400mA pulsed rating. |
| Current Matching | ±0.5% (typ) - ensures uniform brightness across 4 LED strings in multi-zone backlighting. |
| Switching Frequency | 0.1MHz to 1MHz - adjustable via RT resistor; higher frequencies reduce inductor size, lower frequencies improve efficiency. |
| PWM Dimming Resolution | 1/10,000 min duty at 100Hz - enables ultra-fine brightness control without visible flicker in display applications. |
| OVP Threshold | 2.0V (±0.1V) - triggers shutdown when output overvoltage detected via external resistive divider on OVP pin. |
| Thermal Shutdown | +160°C (typ) - latches off until EN or VIN reset; hysteresis of +30°C prevents oscillation near trip point. |
Pinout & Package
AL3065AS16-13 is housed in a Pb-free, RoHS-compliant SO-16 (SOIC-16) package with standard 1.27mm pitch, exposed pad optional per manufacturer layout guidelines. Thermal resistance θJA = 79°C/W on 2"×2" FR-4 board with 2oz copper.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 13–16 (CH4, CH1–CH3) | LED current sink outputs | High-side current sources; each drives one LED string; open-circuit voltage limit ~60V. |
| 2 (ISET) | Current reference set input | Resistor to GND sets full-scale current for all 4 channels; 21.8kΩ → 55mA per channel. |
| 3 (OVP) | Overvoltage sense input | Monitors output via resistive divider; trips at 2.0V; 200mV hysteresis prevents chatter. |
| 4 (RT) | Frequency programming input | Resistor to GND sets oscillator frequency; 100kΩ → ~500kHz; range spans 0.1–1MHz. |
| 5 (EN) | Enable/disable control | Logic-high (>2.4V) enables operation; logic-low (<0.5V) reduces quiescent current to <1µA. |
| 6 (CS) | Current sense input | Connects to MOSFET source resistor; 540mV threshold triggers cycle-by-cycle current limiting. |
| 7 (OUT) | Gate driver output | Drives external N-MOSFET gate with 5V logic-level swing; rise/fall time <30ns into 1nF load. |
| 8 (VCC) | Internal LDO output | 5V regulated supply for internal circuitry; requires ≥2.2µF ceramic bypass capacitor to GND. |
| 9 (VIN) | Main power input | Accepts 4.5–33V; requires ≥10µF bulk capacitance to stabilize input under transient loads. |
| 10 (ADIM) | Analog dimming control | Voltage input (0–1.5V) directly scales LED current; also serves as RC filter node for PWM-to-analog mode. |
| 11 (COMP) | Loop compensation node | Connects external RC network to stabilize current regulation loop; sourcing/sinking ±120µA. |
| 12 (DIM) | PWM dimming input | Accepts 0.3–2.5V logic signals; active-high; synchronizes LED on/off timing with external PWM source. |
| 15 (GND) | Power and signal ground | Common return for VIN, VCC, ISET, OVP, CS, COMP, ADIM, DIM, EN; must be low-impedance plane. |
Key Features
| Feature | Design Value |
|---|---|
| Four-channel precision current sink | ±0.5% matching ensures consistent luminance across multi-string WLED arrays without per-string calibration. |
| Triple dimming mode support | Direct PWM (no color shift), PWM-to-analog (low EMI), and DC-to-analog (simplest control) - selectable via ADIM/DIM wiring. |
| Comprehensive fault protection | Includes latched OVP (3.2V shutdown), cycle-by-cycle OCP (540mV), OTP (+160°C), LED open/short, and Schottky/inductor short detection. |
| High-voltage pin safety design | OVP and CS pins rated to 42V - enables safe monitoring of boosted output voltages up to 60V in WLED applications. |
| Low-ripple, low-BOM solution | Integrated 5V LDO, soft-start, and compensation reduce external component count versus discrete boost+current-sink designs. |
Applications
| LCD Monitor Backlight | LCD TV Backlight |
|---|---|
|
Use Scenario: Driving 4-zone edge-lit LED arrays in 24–32 inch desktop monitors with local dimming capability. IC Role / Device Role / Timing Role: Primary boost controller and current regulator; manages independent current per zone based on image content metadata. Use Value: Enables >10,000:1 contrast ratio via precise per-zone current control and 1/10,000 PWM resolution at 100Hz. |
Use Scenario: Powering 16-string direct-lit backlight in 43–55 inch LCD TVs with dynamic contrast enhancement. IC Role / Device Role / Timing Role: Four-channel current sink driving parallel LED strings; synchronized dimming across all channels via single DIM signal. Use Value: Delivers ±0.5% current matching across strings to eliminate vertical banding and ensure uniform screen luminance. |
| LCD Display Module | Industrial HMI Panel |
|
Use Scenario: Compact 7–10 inch display modules used in medical devices and test equipment requiring stable, flicker-free illumination. IC Role / Device Role / Timing Role: Integrated boost + current regulation IC eliminating need for separate DC-DC and LED driver ICs. Use Value: Reduces BOM count by integrating gate driver, LDO, protection logic, and 4-channel sinks in SO-16 footprint. |
Use Scenario: Ruggedized human-machine interface panels in factory automation with extended temperature (-40°C to +85°C) operation. IC Role / Device Role / Timing Role: High-reliability backlight controller with latched OVP, OTP, and LED open/short protection for unattended operation. Use Value: Ensures fail-safe shutdown during overvoltage events (e.g., feedback resistor drift) and automatic recovery after EN toggle. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 4-channel WLED boost controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AL3069 | Successor device with identical pinout, enhanced ESD (6kV HBM), improved current matching (±0.3%), and extended OVP hysteresis (300mV). | Drop-in replacement; supports same SO-16 layout and external components; adds robustness for high-volume consumer displays. | Select AL3069 for new designs-Diodes explicitly recommends it as the functional upgrade path from AL3065A. |
| LM3409QMY/NOPB | Single-channel automotive-grade boost LED controller (AEC-Q100); no integrated current sinks-requires external FET + current sense per channel. | Requires 4x LM3409 + 4x external MOSFETs + 4x current sense resistors to match AL3065A's 4-channel function. | Only viable where AEC-Q100 qualification is mandatory and board space is not constrained; significantly higher BOM and layout complexity. |
Compared with AL3065AS16-13, AL3069 offers direct pin-and-function compatibility with tighter specifications and active production status, while LM3409QMY demands full system redesign to achieve equivalent 4-channel performance-making AL3069 the only practical alternative for continuity.
Availability
AL3065AS16-13 is available at Aetrix Electronics and suitable for LCD monitor, LCD TV, and industrial HMI panel designs requiring stable component supply despite its obsolete status-inventory is secured for legacy program support and repair fulfillment.
Supply support for AL3065AS16-13 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, with core expertise in power management, signal integrity, and LED lighting control ICs.
The AL3065AS16-13 belongs to Diodes' WLED backlight controller product line, engineered specifically for high-precision, multi-string LCD display illumination with integrated protection and flexible dimming-targeting cost-sensitive, high-volume display applications.
FAQ
Is AL3065AS16-13 still in production?
No-AL3065AS16-13 is officially obsolete and discontinued by Diodes Incorporated as of February 2025. It is no longer manufactured, but Aetrix Electronics maintains limited legacy inventory for repair and end-of-life program support with full traceability and documentation.
Can AL3065AS16-13 be replaced with AL3069 without PCB changes?
Yes-AL3069 is a pin-compatible, functionally identical successor with identical SO-16 footprint, identical pin functions, and backward-compatible external component values. Diodes confirms AL3069 as the designated replacement, offering improved specs including ±0.3% current matching and 6kV HBM ESD rating.
What dimming modes does AL3065AS16-13 support, and how are they configured?
It supports three dimming modes: (1) Direct PWM-tie ADIM to VCC and apply PWM to DIM; (2) PWM-to-analog-connect capacitor from ADIM to GND and apply PWM to DIM; (3) DC-to-analog-apply 0–1.5V DC to ADIM and tie DIM HIGH. Each mode uses the same hardware, differing only in ADIM/DIM wiring.
Does AL3065AS16-13 require an external MOSFET, and what are its gate drive specifications?
Yes-an external N-channel MOSFET is required for the boost switch. Pin 7 (OUT) delivers a 5V logic-level gate drive with <30ns rise/fall time into 1nF load, capable of driving typical 1Ω-gate MOSFETs. The CS pin (Pin 6) monitors source current via a sense resistor to enforce 540mV overcurrent limit.
AL3065AS16-13 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- 16-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- DC DC Controller
- Topology:
- Step-Up (Boost)
- Internal Switch(s):
- No
- Number of Outputs:
- 4
- Voltage - Supply (Min):
- 4.5V
- Voltage - Supply (Max):
- 33V
- Voltage - Output:
- 60V
- Current - Output / Channel:
- 250mA
- Frequency:
- 100kHz ~ 1MHz
- Dimming:
- Analog, PWM
- Applications:
- Backlight
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SO
AL3065AS16-13 FAQ
1.How can I place an order for AL3065AS16-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for AL3065AS16-13 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 AL3065AS16-13 reliable?
The price and inventory of AL3065AS16-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AL3065AS16-13 is usually 5 days.
3.What payment methods are accepted for AL3065AS16-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AL3065AS16-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AL3065AS16-13?
AL3065AS16-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AL3065AS16-13 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 AL3065AS16-13?
For technical support, including AL3065AS16-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AL3065AS16-13 requirements.
6.How does Aetrix verify that AL3065AS16-13 is sourced from the original manufacturer or authorized distributors?
All AL3065AS16-13 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 AL3065AS16-13 meets industry standards.
7.What is the process for return or replacement of AL3065AS16-13?
All AL3065AS16-13 units undergo pre-shipment inspection (PSI). If there is an issue with AL3065AS16-13, 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 AL3065AS16-13 part is unused and in its original packaging.
Return procedure for AL3065AS16-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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