S-8521B15MC-ATAT2U

Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Active
Output Type:	Transistor Driver
Function:	Step-Down
Output Configuration:	Positive
Topology:	Buck
Number of Outputs:	1
Output Phases:	1
Voltage - Supply (Vcc/Vdd):	2.5 V ~ 16 V
Frequency - Switching:	180kHz
Duty Cycle (Max):	100%
Synchronous Rectifier:	No
Clock Sync:	No
Serial Interfaces:	--
Control Features:	Enable
Operating Temperature:	-40°C ~ 85°C (TA)
Package / Case:	SC-74A, SOT-753
Supplier Device Package:	SOT-23-5

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Introduction

The S-8521B15MC-ATAT2U is a digital DC/DC converter developed by Sanken Electric Co., Ltd. It is a controller IC specifically designed to enable efficient and fast switching power supply design with low risk. This requires a low “on-resistance” synchronous rectifier and two digital inputs.

Application Field

As a power management IC, the S-8521B15MC-ATAT2U has a wide range of applications in the regulated industrial, computing, and consumer markets, including notebook computers, LCD monitors, PDAs, and automotive electronics. This IC is capable of supplying power converters from a wide range of power sources and providing stable power to the system for long term performance. It also effectively reduces EMI in power switching, so that noise is not generated or propagated outside the device.

Working Principle

The S-8521B15MC-ATAT2U utilizes a principle called Pulse Width Modulation (PWM) to control and switch current from a DC source. Pulse Width Modulation is a technique used to control the voltage and current output pattern of an alternating current. The principle of the operation is simple: A signal is sent to the S-8521B15MC-ATAT2U at a certain frequency, and the PWM output is varied in the on/off ratio and thereby cause current output to the load. The output is then compared to a set reference voltage. This comparison is done by a voltage feedback loop to regulate the output. Some of its main features include continuous SOP-8 package; output current up to 1.5A; digital soft-start control and over-current protection; wide input voltage range of 4.5V to 40V; output voltage range of 0.85V ~ 18V; 400 kHz switching frequency; low EMI; and programmable current limit.

Conclusion

In conclusion, S-8521B15MC-ATAT2U is an advanced digital DC/DC converter developed by Sanken Electric Co., Ltd. It has a wide range of applications in the regulated industrial, computing and consumer markets as it efficiently and effectively minimizes EMI for stable and reliable power supply. It is capable of providing power sources from a wide range of power sources and also provides efficient current output over the entire range. The S-8521B15MC-ATAT2U utilizes pulse width modulation to control and switch current. With its advanced features and reliable performance, the S-8521B15MC-ATAT2U provides superior power management solutions to its customers.

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