Image shown is for reference only. Actual package may vary. Refer to the product data sheet for package details. TSSOP-16EP

Image shown is for reference only. Actual package may vary. Refer to the product data sheet for package details. U-QFN4040-16/SWP (Type UXB)

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AL8890Q

60V Synchronous Buck

Evaluation Board User Guides

AL8890Q-EV1-User-Guide.pdf (395 KB)

AL8890Q-EV2-User-Guide.pdf (408 KB)

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Description

The AL8890Q/AL88902Q is a synchronous buck converter with internal compensation and switching frequency adjustable up to 2.5MHz. The device integrates a 120mΩ high-side power MOSFET and a 55mΩ low-side power MOSFET to provide high-efficiency DC-DC conversion.

The AL8890Q enables a continuous load current of up to 3.5A, (AL88902Q up to 2.5A) with efficiency as high as 95% in enhanced biased. The device features current mode control operation, which enables easy loop stabilization supporting a wide range of output loading, suitable for both CV (Constant Voltage) and CC (Constant Current) applications.

The AL8890Q/AL88902Q simplifies board layout and reduces space requirements with its high switching frequency and use of smaller size inductor and built-in MOSFET, making it ideal for power management.

The AL8890Q/AL88902Q is available in both TSSOP-16EP and wettable U-QFN4040-16/SWP (Type UXB) packages.

Feature(s)

AEC-Q100 Grade1
V_IN8V to 60V
Wide V_OUT Range: 0.8V to near 100% of V_IN
V_OUT 1% Accuracy
V_FB Adjustable through SS/TR Pin
Synchronous Rectification > 95% Efficiency @12V
- High-Side (120mΩ) Power MOSFET
- Low-Side (55mΩ) Power MOSFETs
Low Quiescent Current 43μA
Switching Frequency 300kHz to 2.5MHz
Force PWM or PFM Mode through MSYNC
Synchronization to External Clock
Programmable Startup Control
▪ Startup with Pre-Biased Output
▪ External Soft-Start with Tracking
▪ High Voltage Enable Pin with High Precision
Protection and Diagnosis Functions
- Power Good (PG) Detection
- Thermal Shutdown Protection
Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)
Halogen and Antimony Free. “Green” Device (Note 3)
The AL8890Q/AL88902Q is suitable for automotive applications requiring specific change control; this part is AEC-Q100 qualified, PPAP capable, and manufactured in IATF 16949 certified facilities. https://www.diodes.com/quality/productdefinitions/

Application(s)

Automotive Infotainment
Automotive exterior and interior LED lighting systems
Automotive motor controls
Automotive and industrial power systems

Specifications & Technical Documents

Product Parameters

Compliance (Only Automotive Supports PPAP)	Automotive
MinimumInput Voltage (V)	3.5 V
MaximumInput Voltage (V)	60 V
Quiescent Current (µA)	43 mA

Technical Documents

Design Tools

AL8890Q_AL88902Q_Design_Calculator.xlsx (1015 KB)

Evaluation Board User Guides

AL8890Q-EV1-User-Guide.pdf (395 KB)

AL8890Q-EV2-User-Guide.pdf (408 KB)

Recommended Soldering Techniques

TN1.pdf

Purchase & Availability

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Product Change Notices (PCNs)

A PCN may only apply to specific orderable part numbers in this datasheet. Please refer to the corresponding PCN to see the exact orderable part number(s) affected.

PCN #	Issue Date	Implementation Date	Subject
PCN-2770	2025-10-30	2025-10-30	Add Fab Site Code, Country of Diffusion (COD) and Assembly Site Origin (ASO) on Product and Shipping Labels for all Diodes Products