S-8356Q30MC-OYPT2U

Voltage - Supply (Vcc/Vdd):	0.9 V ~ 10 V
Supplier Device Package:	SOT-23-5
Package / Case:	SC-74A, SOT-753
Operating Temperature:	-40°C ~ 85°C (TA)
Control Features:	Enable
Serial Interfaces:	--
Clock Sync:	No
Synchronous Rectifier:	No
Duty Cycle (Max):	85%
Frequency - Switching:	600kHz
Series:	--
Output Phases:	1
Number of Outputs:	1
Topology:	Boost
Output Configuration:	Positive
Function:	Step-Up
Output Type:	Transistor Driver
Part Status:	Active
Packaging:	Tape & Reel (TR)

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S8356Q30MC-OYPT2U is an adaptive-on-time (AOT) High-Side Pulse-Width Modulation (PWM) step-down DC-DC controller designed for reliable, high efficiency and low noise performance. It offers a very wide range of output voltage from 0.8V to 5.5V. This powerhouse of a controller utilizes a secondary-side feedback loop, which reduces output voltage fluctuation. In addition, high frequency PWM operation and on-chip high-performance oscillator allows the PWM switching frequency to be dynamically adjusted to ensure adequate transient response, even in heavy-load conditions.

The S8356Q30MC-OYPT2U step-down DC-DC controller includes many features such as a programmable soft-start, adjustable over current protection, adjustable maximum ON-time, over-voltage protection and under-voltage lockout. It also offers the ability to synchronize with external circuit, a power good output, true shutdown and over temperature protection. Combined, these features create a cost effective and highly reliable, operation.

The S8356Q30MC-OYPT2U is suitable for a wide range of applications such as DC-DC converter designs requiring high efficiency at light load condition, designs within the industrial, computer, communications, consumer electronics, automotive and home entertainment markets. This controller is considered a cutting-edge device for its performance, size, and applications.

The salient features of S8356Q30MC-OYPT2U include a programmable input voltage range, adjustable output voltage range, adjustable current limit and an internal voltage reference. It has an integrated chip-enable pin to enable/disable the operation and an integrated temperature compensation function to improve the accuracy of the output voltage. A PowerGood output is provided, which indicates whether the output is within the proper voltage range or not.

The S8356Q30MC-OYPT2U works by selecting the reference voltage and setting the number of pulses per cycle. A PWM waveform is generated and a switching circuit is used to regulate the output voltage. In order to improve efficiency, a secondary-side feedback loop is used to adjust the PFM switching time and reduce output voltage fluctuation. The resulting waveform of the PWM is shown in figure 1.


Figure 1: PWM waveform generated by S8356Q30MC-OYPT2U

The S8356Q30MC-OYPT2U can be used to regulate the output voltage of DC-DC converters, and is widely used in a variety of applications such as: cell phones, PDAs, portable DVD players and chargers; computers and peripherals; cameras and printers; household appliances; automotive and industrial systems; communication systems; lighting control systems; and other applications requiring a reliable and efficient DC-DC regulator. It can also be used in applications that need to have a load-dependent voltage range, such as laptops and digital cameras.

In conclusion, the S8356Q30MC-OYPT2U High-Side Pulse-Width Modulation (PWM) Step-Down DC-DC Controller is a highly reliable, adjustable, and feature rich DC-DC controller. It is capable of providing a stable output voltage with a wide range of load current, and offers an extensive array of protection features and load-dependent voltage range capabilities. It is suitable for a wide variety of applications, and is a great choice for anyone looking for an efficient and reliable DC-DC regulator.

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