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Diodes Incorporated AL8890QFVBW-13
- Part No.:
- AL8890QFVBW-13
- Manufacturer:
- Diodes Incorporated
- Package:
- 16-UQFN Exposed Pad
- Datasheet:
-
AL8890QFVBW-13.pdf
- Description:
- LED MV INT SWITCH U-QFN4040-16 T
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
AL8890QFVBW-13 from Diodes Incorporated is a 60V AEC-Q100 Grade 1 synchronous buck DC-DC converter with integrated 120mΩ high-side and 55mΩ low-side MOSFETs, delivering up to 3.5A continuous output current, 95% peak efficiency at 12V input, and adjustable switching frequency from 300kHz to 2.5MHz. It supports both constant-voltage (CV) and constant-current (CC) operation for automotive LED lighting and power systems.
For engineers reviewing the AL8890QFVBW-13 datasheet, AL8890QFVBW-13 pinout, AL8890QFVBW-13 application, or AL8890QFVBW-13 equivalent, key selection criteria include its 3.8–60V input range, 0.8V feedback reference, programmable soft-start via SS/TR, forced PWM/PSM mode control via MSYNC, and thermal shutdown at +165°C - all validated in automotive-grade U-QFN4040-16/SWP packaging.
Technical Context
This device implements current-mode control with internal compensation, enabling stable loop response across wide load and input voltage variations. Its dual-mode operation (PWM and PFM) is selected via MSYNC pin state or external clock synchronization, supporting dynamic efficiency optimization in battery-sensitive and noise-constrained environments.
The integrated high- and low-side MOSFETs eliminate external switch losses, while BST capacitor coupling enables bootstrap gate drive for the high-side n-channel FET. The BIAS pin allows efficient biasing from VOUT (≥4.4V), reducing VIN supply current and improving light-load efficiency.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3.8V to 60V - supports 12V/24V/48V automotive battery rails with transient tolerance up to VIN+2V on SW node. |
| Output Current | Up to 3.5A continuous - verified under thermal limits with θJA = 32°C/W in U-QFN4040-16/SWP package. |
| Feedback Reference | 0.800V ±12mV - enables precise output regulation with 1% accuracy over -40°C to +150°C junction temperature. |
| Switching Frequency | 300kHz to 2.5MHz - set by resistor on FS pin or synchronized externally; higher frequencies allow smaller magnetics and faster transient response. |
| Quiescent Current | 43μA typical - enables ultra-low standby power in always-on automotive modules without compromising startup time. |
| Efficiency | 95% peak at 12VIN/5VOUT/3.5A - achieved via synchronous rectification and low RDS(ON) MOSFETs (120mΩ HS / 55mΩ LS). |
| Protection Features | Thermal shutdown (+165°C), power-good (PG) open-drain flag, undervoltage/overvoltage fault detection, hiccup-mode short-circuit recovery. |
Pinout & Package
AL8890QFVBW-13 uses the wettable U-QFN4040-16/SWP (Type UXB) package: 4.0mm × 4.0mm body, 0.4mm pitch, exposed thermal pad (EP) for enhanced heat dissipation (θJC = 6°C/W). Pin numbering follows top-view orientation with pin 1 at bottom-left corner.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN (3,4) | Power Input | Primary supply rail (3.8–60V); requires local bulk capacitance to suppress ripple and transients. |
| BST (5) | Bootstrap Supply | Drives high-side MOSFET gate; requires ≥0.1µF ceramic capacitor between BST and SW pins. |
| SW (6,7) | Switch Node | Connection point for external inductor and output LC filter; carries high di/dt switching current. |
| PGND (8,9) | Power Ground | High-current return path for MOSFETs and output stage; must be connected to EP via multiple vias. |
| EN (10) | Enable Control | Digital input (1.38–1.52V threshold); tie to VIN for automatic startup or drive externally for sequencing. |
| FS (11) | Frequency Set | Resistor-to-GND sets fSW; 57.6kΩ yields ~2.5MHz, 845kΩ yields ~300kHz. |
| MSYNC (12) | Mode/Sync Control | High = forced PWM; low = PFM; external clock edge-triggered sync up to 2.5MHz. |
| PG (13) | Power-Good Flag | Open-drain output with 5MΩ internal pull-up; asserts low during soft-start or output fault. |
| SS/TR (14) | Soft-Start/Tracking | Capacitor-to-GND sets ramp time; voltage input enables output tracking in multi-rail systems. |
| FB (15) | Feedback Input | Monitors output via resistive divider; regulates to 0.8V reference with ±12mV tolerance. |
| BIAS (1) | Bias Supply Input | Accepts ≥4.4V external bias (e.g., VOUT) to reduce VIN current draw and improve light-load efficiency. |
| VCC (2) | Internal LDO Output | Provides 4.8V ±0.5V for internal circuitry; requires 1µF local bypass to PGND. |
| GND (16) | Analog Ground | Reference for control circuitry; single-point connection to EP ensures noise immunity. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for automotive ambient temperatures (-40°C to +125°C) and PPAP-capable manufacturing in IATF 16949 facilities. |
| Integrated power MOSFETs | 120mΩ high-side + 55mΩ low-side switches eliminate external FETs and gate drivers, reducing BOM count and layout area. |
| Programmable soft-start & tracking | SS/TR pin supports capacitor-based ramp control or external voltage input for precise power sequencing in multi-rail systems. |
| Wide output voltage range | 0.8V to near 100% of VIN - enables direct step-down from 60V battery to 5V logic or 48V to 12V intermediate bus. |
| Low quiescent current | 43μA typical supply current - extends battery life in always-on automotive modules such as infotainment standby circuits. |
| Robust protection suite | Includes thermal shutdown, output over/undervoltage detection, hiccup-mode short-circuit recovery, and PG status reporting. |
Applications
| Automotive Infotainment Power | Exterior LED Headlamp Driver |
|---|---|
|
Use Scenario: Powering 5V/3.3V logic rails in head-unit and display modules with cold-crank resilience. IC Role / Device Role / Timing Role: Primary CV buck regulator converting 12V battery to stable 5V supply with fast load transient response. Use Value: 95% efficiency at 3.5A reduces thermal stress in sealed enclosures; 60V input withstands load-dump transients per ISO 7637-2. |
Use Scenario: Driving high-brightness LED strings in adaptive front-lighting systems (AFS). IC Role / Device Role / Timing Role: Constant-current (CC) buck controller regulating LED current via FB pin configuration. Use Value: Programmable soft-start prevents inrush into large LED capacitive loads; PFM mode maintains >85% efficiency at dimmed currents <100mA. |
| Interior Ambient Lighting | Automotive Motor Control Bias Supply |
|
Use Scenario: Providing dimmable 12V/24V supplies for RGB LED cabin lighting with PWM dimming interface. IC Role / Device Role / Timing Role: CV buck stage with SS/TR pin used for output voltage tracking during dimming transitions. Use Value: 2.5MHz max switching frequency enables use of 1.0µH inductors, minimizing board space in tight dashboard layouts. |
Use Scenario: Generating isolated gate-drive bias rails for BLDC motor inverters in HVAC or seat control modules. IC Role / Device Role / Timing Role: High-input-voltage buck supplying 12V/15V to half-bridge driver ICs with thermal fault reporting via PG pin. Use Value: Thermal shutdown at +165°C protects against sustained overload during stall conditions; BIAS pin improves efficiency when powered from auxiliary 12V rail. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MPQ4420AGL-A-Z | 40V max input, 2A output, 170mΩ/100mΩ MOSFETs, no BIAS pin, fixed 500kHz fSW | Limited to 40V systems; lacks programmable frequency and bias optimization for high-VIN efficiency. | Choose for cost-sensitive 12V/24V non-automotive applications where 60V rating and AEC-Q100 are unnecessary. |
| LM5164QDDARQ1 | 65V max input, 1A output, external MOSFETs required, 100kHz–2.2MHz fSW, no integrated CC mode | Requires external FETs and current-sense circuitry for LED current regulation; higher BOM complexity. | Choose when >3.5A output or custom MOSFET selection is needed, accepting added design effort and footprint. |
Compared with MPQ4420AGL-A-Z and LM5164QDDARQ1, AL8890QFVBW-13 uniquely combines 60V input, 3.5A integrated output, AEC-Q100 Grade 1 qualification, and native CC/CV dual-mode operation - making it optimal for space-constrained, thermally demanding automotive LED and infotainment power stages.
Availability
AL8890QFVBW-13 is available at Aetrix Electronics and suitable for automotive infotainment, exterior LED lighting, interior ambient lighting, and motor control bias supply applications requiring stable component supply, long-term lifecycle support, and AEC-Q100-compliant sourcing.
Supply support for AL8890QFVBW-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 manufacturer specializing in discrete, analog, and mixed-signal solutions for automotive, industrial, computing, and consumer markets, with IATF 16949-certified production facilities.
The AL8890Q series belongs to Diodes' automotive-grade power management portfolio, designed specifically for high-reliability DC-DC conversion in harsh-environment vehicle subsystems including lighting, infotainment, and body electronics.
FAQ
What is the maximum allowable input voltage transient for AL8890QFVBW-13?
The AL8890QFVBW-13 supports transient voltages up to VIN + 2V on the SW pin (per Absolute Maximum Ratings), with recommended operating input limited to 60V. This allows robust operation during ISO 7637-2 Load Dump (up to 65V for 400ms) when combined with appropriate input clamping or TVS protection.
Can AL8890QFVBW-13 operate in constant-current mode without external current-sense components?
Yes - AL8890QFVBW-13 supports native constant-current regulation by configuring the FB pin with a current-sense resistor and applying a reference voltage to the SS/TR pin, eliminating the need for external op-amps or dedicated current-sense ICs. This is validated in Figure 2 of the datasheet for LED driver applications.
How does the BIAS pin improve system efficiency?
When BIAS is connected to a stable ≥4.4V supply (e.g., regulated VOUT), the internal LDO draws bias current from BIAS instead of VIN, reducing input supply current by up to 40% at light loads. This directly lowers power loss in high-input-voltage scenarios like 48V-to-12V conversion.
Is the U-QFN4040-16/SWP package compatible with standard reflow profiles?
Yes - the AL8890QFVBW-13's U-QFN4040-16/SWP package is qualified for JEDEC J-STD-020D moisture sensitivity level 3 and supports standard lead-free reflow profiles (peak 260°C). Its wettable flanks enable automated optical inspection (AOI) of solder joints, critical for automotive manufacturing traceability.
AL8890QFVBW-13 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Package/Case:
- 16-UQFN Exposed Pad
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Switch Type:
- General Purpose
- Number of Outputs:
- 1
- Ratio - Input:Output:
- 1:1
- Output Configuration:
- High/Low Side
- Output Type:
- N-Channel
- Interface:
- -
- Voltage - Load:
- 0.8V ~ 60V
- Voltage - Supply (Vcc/Vdd):
- 3.8V ~ 60V
- Current - Output (Max):
- 3.5A
- Rds On (Typ):
- 120mOhm
- Input Type:
- Non-Inverting
- Features:
- Power Good
- Fault Protection:
- Current Limiting (Fixed), Over Temperature
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount, Wettable Flank
- Supplier Device Package:
- U-QFN4040-16/SWP (Type UXB)
AL8890QFVBW-13 FAQ
1.How can I place an order for AL8890QFVBW-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for AL8890QFVBW-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 AL8890QFVBW-13 reliable?
The price and inventory of AL8890QFVBW-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AL8890QFVBW-13 is usually 5 days.
3.What payment methods are accepted for AL8890QFVBW-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AL8890QFVBW-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AL8890QFVBW-13?
AL8890QFVBW-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AL8890QFVBW-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 AL8890QFVBW-13?
For technical support, including AL8890QFVBW-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AL8890QFVBW-13 requirements.
6.How does Aetrix verify that AL8890QFVBW-13 is sourced from the original manufacturer or authorized distributors?
All AL8890QFVBW-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 AL8890QFVBW-13 meets industry standards.
7.What is the process for return or replacement of AL8890QFVBW-13?
All AL8890QFVBW-13 units undergo pre-shipment inspection (PSI). If there is an issue with AL8890QFVBW-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 AL8890QFVBW-13 part is unused and in its original packaging.
Return procedure for AL8890QFVBW-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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