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

U-QFN4040-16-SWP.png

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

TSSOP-16EP.png

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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

Product Specifications

Product Parameters

AEC Qualified	Yes
Compliance (Only Automotive supports PPAP)	Automotive
Topologies (Buck)	Yes
Topologies (Buck-Boost)	No
Topologies (Boost)	No
Topologies (Charge Pump)	No
Minimum Input Voltage (V)	3.8
Maximum Input Voltage (V)	60
Maximum Output Voltage (V)	59
Maximum LED Current (A)	3.5
LED Current Accuracy (%)	1
Switching Frequency Maximum (kHz)	2500
Dimming (PWM)	NA
Dimming (Analog)	Yes
Efficiency (%)	95
Operating Temperature Range (°C)	-40 to 125
Sense/Feedback Voltage (mV)	800
Quiescent Current Typ (mA)	43 uA
AEC-Q100 Grade	1