S-8337ACIA-P8T1G

Package / Case:	8-SMD, Flat Lead
Supplier Device Package:	8-SON (A) (2.9x2.8)
Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Not For New Designs
Output Type:	Transistor Driver
Function:	Step-Up
Output Configuration:	Positive
Topology:	Boost
Number of Outputs:	1
Output Phases:	1
Voltage - Supply (Vcc/Vdd):	1.8 V ~ 6 V
Frequency - Switching:	257.4kHz ~ 1.134MHz
Duty Cycle (Max):	89%
Synchronous Rectifier:	No
Clock Sync:	No
Serial Interfaces:	--
Control Features:	Current Limit, Enable, Frequency Control
Operating Temperature:	-40°C ~ 85°C (TA)

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S-8337ACIA-P8T1G application field and working principle

The S-8337ACIA-P8T1G is part of the voltage regulators family and it made by ROHM Semiconductor. It belongs to DC DC switching controllers group.

Application Field

The S-8337ACIA-P8T1G is designed for applications in power supplies and displays,such as small monitors and LCD televisions, notebook computers. It can also be used in renewable energy sources, such as solar and wind-powered systems, where it can effectively provide a power boost to increase power efficiency.
Main features include high voltage protection circuit, ESD performance, output over-current protection, output voltage accuracy, power sequence control and power good delay.

Working Principle

The S-8337ACIA-P8T1G works by using voltage switch cutting technology. The switching chip is directly activated by an external signal, and is then fed open or closed by a pulse width modulation (PWM). This controls the voltage output and current.
The voltage switching controller has an internal DC-DC converter for power input, and the output depends on the input voltage. When the output voltage does not meet the demand, then the controller will adjust the duty cycle of PWM.
The S-8337ACIA-P8T1G is equipped with an adjustable frequency oscillator that can reach up to 500kHz. This allows for faster frequency response time and more accurate control of input and output voltage.
The controller also has an on-chip driver for MOSFETs, which enables the switching to be controllable and faster than other controllers. It also helps to minimize power dissipation and reduce the amount of heat generated when the controller is working.
In addition, the S-8337ACIA-P8T1G can control a maximum of three phases, each with its own adjustable frequency depending on the current phase being operated. This helps to improve system efficiency and makes it easy to adapt the controller to different applications.
The S-8337ACIA-P8T1G also features an internal voltage correction circuit that compensates for the output voltage fluctuations due to environmental changes. This ensures that the output voltage remains within a certain range and ensures the stability of the entire system.
The S-8337ACIA-P8T1G also has a low input voltage protection circuit, which monitors the input voltage and de-energizes the controller if the input voltage falls below a preset threshold. This helps to protect the components and the entire system.
The S-8337ACIA-P8T1G also offers adjustable output current and over-current protection. This protects the system from over-current conditions and ensures that the output current does not exceed the maximum current allowed by the system.
To summarize, the S-8337ACIA-P8T1G is an efficient and powerful switching controller, which is designed for applications in power supplies and displays. Its adjustable frequency oscillator, voltage correction circuit, and protection circuits make it suitable for different applications, and its low input voltage protection ensures the stabilization of the entire system.

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