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AOZ8844DT

Name: AOZ8844DT
Rating: 4.7 (12 reviews)

TVS DIODE 4CH 5V LOW CAP DFN

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資料表 AOZ8844DT DataSheet
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規格

Part Status	Not For New Designs
Mounting Type	Surface Mount
Package / Case	5-XFDFN
Supplier Device Package	5-DFN (1.3x0.8)
Base Product Number	AOZ8844

概述

Description

The AOZ8844DT is a high-efficiency, synchronous buck converter designed for power management in various applications, including consumer electronics and industrial devices. It features a wide input voltage range, typically from 4.5V to 28V, and delivers adjustable output voltages down to 0.8V. With a maximum output current of 4A, it offers a compact solution for power supply needs.
Key features include built-in high-side and low-side MOSFETs for improved efficiency, particularly under light-load conditions, and various protection mechanisms such as over-current protection (OCP) and thermal shutdown. The AOZ8844DT is also characterized by its low quiescent current, making it suitable for battery-operated devices.
The device comes in a compact package, facilitating easy integration into space-constrained designs. Its adjustable output and efficient performance make the AOZ8844DT a versatile choice for designers seeking reliable power solutions.

Features

The AOZ8844DT is a high-efficiency synchronous buck regulator designed for point-of-load applications. Key features include:
1. Input Voltage Range: Operates from 4.5V to 18V, making it suitable for various power sources.
2. Output Current: Supports up to 4A continuous output current.
3. High Efficiency: Achieves efficiencies up to 95%, reducing heat generation and improving performance.
4. Adjustable Output Voltage: Output voltage can be programmed from 0.8V to 5V.
5. PWM Control: Utilizes pulse-width modulation for stable output under varying loads.
6. Under-Voltage Lockout: Protects the circuit by disabling output when input voltage drops below a set threshold.
7. Thermal Shutdown: Built-in protection feature that disables the device at high temperatures to prevent damage.
8. Small Package: Available in a compact SOP-8 package, facilitating space-constrained designs.
These features make the AOZ8844DT suitable for applications in telecommunications, consumer electronics, and industrial systems.

Package

The AOZ8844DT comes in a compact 16-pin TQFN (Thin Quad Flat No-lead) package, which offers efficient thermal performance and space-saving design for power management applications.

Pinout

The AOZ8844DT is a high-performance, synchronous step-down DC-DC converter with a pin count of 20.
The pins serve the following functions:
1. VIN - Input voltage.
2. VOUT - Output voltage.
3. GND - Ground reference.
4. SW - Switch node for the inductor connection.
5. COMP - Compensation network connection.
6. FB - Feedback input for voltage regulation.
7. EN - Enable pin for switching operation.
8. SS - Soft-start control.
9. PG - Power good indicator.
10. SEN - Current sense input.
11. BOOT - Bootstrap capacitor connection.
12. LIM - Current limit setting.
13. CSN/CSN - Current sense inputs for overcurrent protection.
14. TRK - Tracking input for sequencing.
15. TS - Temperature sense input.
16. VOUT_SENSE - Senses the output voltage.
17. PGND - Power ground connection.
18. NC - No connect (not internally connected).
19. VDD - Supply voltage for internal circuits.
20. DNP - Do not populate pad for future use.
This converter is ideal for various applications requiring efficient power conversion.

Manufacturer

The AOZ8844DT is manufactured by AOS (Alpha and Omega Semiconductor). AOS is a semiconductor company that specializes in the design, development, and supply of a wide range of power semiconductors, including MOSFETs, diodes, and other integrated circuits. The company focuses on providing efficient and innovative solutions for various applications, such as consumer electronics, computing, telecommunications, and automotive sectors. Established in 2000, AOS is known for its commitment to quality and advanced technology in power management solutions.

Application

The AOZ8844DT is a synchronous buck converter designed for various applications, including point-of-load (POL) voltage regulation for processors, FPGAs, and other digital circuits. It is widely used in telecom, consumer electronics, and industrial equipment due to its efficiency, compact size, and ability to handle high load currents. Additionally, it is suitable for powering battery-operated devices, providing regulated output from battery sources, and in portable applications where space and efficiency are critical.

Equivalent

The AOZ8844DT is a high-efficiency synchronous buck regulator. Equivalent products include the TPS562209 from Texas Instruments, the LM22676 from Texas Instruments, and the MP1584 from Monolithic Power Systems. Be sure to compare specifications like input/output voltage, current ratings, and efficiency to ensure compatibility for your application.