S-8338AAAB-T8T1G

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S-8338AAAB-T8T1G is a DC DC Switching Controller produced by ROHM Co., Ltd. It is integrated with the general-purpose power supply controller, PWM controller and voltage monitor, which can improve system efficiency and reduce the design efforts using a voltage regulator. This product can be used for both step-up and step-down applications like LED drivers, small power supplies, portable devices, and laptop and other battery-powered equipment.

Its Features include:

• Low Startup Voltage: 0.9V Max
• Power Supply Voltage: 1.9V to 5.5V
• Output Current Max: 950mA
• Light Load Current: 3.5uA
• Integrated PWM Controller
• Integrated Power MOSFETs
• 3-to-1 Input for Synchronous Rectification
• High-Speed Response
• 2.2MHz Switching Frequency

The S-8338AAAB-T8T1G is an ideal device for applications that require a high power efficiency such as LED backlight, motor control, battery charge/discharge, DC-DC converters and white goods. It is also suitable for portable equipment and battery-powered device applications.

The S-8338AAAB-T8T1G operates under a buck-boost or buck-buck PWM switching control mode. It consists of an internal oscillator, voltage reference, comparator, and error amplifier circuit. The internal power MOSFETs are rated to 470mOhms RDS(ON)maximum and can handle up to 950mA output current with a wide threshold voltage range. The parts have integrated protection circuits for overcurrent protection, overvoltage protection, and thermal protection.

The S-8338AAAB-T8T1G also includes a timer function with adjustable charge time. This feature allows the controller to automatically turn off or on the power supply by setting a timer. Moreover, it has a lightweight current consumption of only 3.5uA in light load condition, among the lowest in the industry.

In the output voltage regulation mode, the system enters into an idle cycle (Standby mode) when the output voltage reaches the regulation voltage. The low power consumption during the idle cycle is beneficial to system efficiency. May PWM control modes are available, allowing design flexibility. These modes include PWM distribution frequency, burst control, and fixed frequency/fixed duty cycle modes.

The S-8338AAAB-T8T1G offers excellent flexibility and efficiency. It is ideal for situations where high efficiency and flexibility is critical such as LED backlight, motor control, and much more. The PWM control block provides a variable frequency, variable duty cycle control mode for more accurate regulation. Along with the integrated power MOSFETs and overprotection circuits, the S-8338AAAB-T8T1G makes an excellent choice for regulating DC-DC power conversion environments.

In conclusion, the S-8338AAAB-T8T1G is a high efficiency DC DC Switching Controller designed for LED drivers, portable devices, and much more. It features excellent flexibility, low current consumption, a wide voltage regulation range, and integrated protection and timer function. The controller is easy to use and provides a high level of performance and reliability.

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