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STR2A100 Dataheets PDF



Part Number STR2A100
Manufacturers Sanken
Logo Sanken
Description power IC
Datasheet STR2A100 DatasheetSTR2A100 Datasheet (PDF)

STR2A100 SERIES APPLICATION NOTE STR2A100 Series Application Note (Rev.0.3) Rev. 0.3 The contents in this application note are preliminary, and are subject to changes without notice. SANKEN ELECTRIC CO., LTD. http://www.sanken-ele.co.jp Copy Right: SANKEN ELECTRIC CO., LTD. Page.1 STR2A100 SERIES APPLICATION NOTE Rev. 0.3 Contents 1. General Descriptions -----------------------------------------------------------------------3 2. Features and Production lineup-----------------------------.

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Document
STR2A100 SERIES APPLICATION NOTE STR2A100 Series Application Note (Rev.0.3) Rev. 0.3 The contents in this application note are preliminary, and are subject to changes without notice. SANKEN ELECTRIC CO., LTD. http://www.sanken-ele.co.jp Copy Right: SANKEN ELECTRIC CO., LTD. Page.1 STR2A100 SERIES APPLICATION NOTE Rev. 0.3 Contents 1. General Descriptions -----------------------------------------------------------------------3 2. Features and Production lineup----------------------------------------------------------3 3. Functional Block Diagram and Terminal List ----------------------------------------4 4. Package Information -----------------------------------------------------------------------5 5. Electrical Characteristics ------------------------------------------------------------------6 6. Typical Application Circuit ---------------------------------------------------------------8 7. Functional Descriptions --------------------------------------------------------------------9 7.1 Startup Operation-------------------------------------------------------------------9 7.2 Constant Output Voltage Control --------------------------------------------- 11 7.3 Soft-Start Function---------------------------------------------------------------- 12 7.4 Automatic Standby Mode Function ------------------------------------------- 12 7.5 Random Switching Function---------------------------------------------------- 13 7.6 Latch Function --------------------------------------------------------------------- 13 7.7 Overcurrent Protection Function (OCP) ------------------------------------- 13 7.8 Overvoltage Protection Function (OVP) ------------------------------------- 14 7.9 Overload Protection Function (OLP) ----------------------------------------- 15 7.10 Thermal Shutdown Protection Function (TSD) ---------------------------- 15 8. Design Notes -------------------------------------------------------------------------------- 16 WARNING The contents in this document are subject to changes, for improvement and other purposes, without notice. Make sure that this is the latest version of the document before use. The operation and circuit examples in this document are provided for reference purposes only. Sanken assumes no liability for violation of industrial property, intellectual property, or other rights of Sanken or third parties, that stem from these examples. The user must take responsibility for considering and determining which objects the products in this document are used with. Although Sanken will continue to improve the quality and reliability of its products, semiconductor products, by their nature, have certain fault and failure rates. The user must take responsibility for designing and checking to secure the device and system so that a part failure may not lead to human injury, fire, damages, or other losses. The products in this document are intended for normal electronic devices (such as home appliances, office equipment, communication terminals, or measurement devices). If you are considering using Sanken’s products for a device that requires high reliability (such as transport machines and their control units, traffic light control systems, disaster prevention, and security equipment or any kind of safety equipment), make sure that you consult Sanken sales representative. Do not use these products for devices that require extremely high reliability (such as aerospace instruments, nuclear power control units, or life support systems) without Sanken’s written consent. The products in this document are not designed to be radiation-proof. The contents in this document must not be transcribed or copied without Sanken’s written consent. Copy Right: SANKEN ELECTRIC CO., LTD. Page.2 STR2A100 SERIES APPLICATION NOTE Rev. 0.3 1. General Descriptions The STR2A100 series are power ICs for switching power supplies, incorporating a power MOSFET and a current mode PWM controller IC in one package. Including a startup circuit and a standby function in the controller, the product achieves low power consumption, low standby power and high cost-effectiveness power supply systems with few external components. 2. Features and Production lineup Features and benefits include the following • DIP8 package, connecting one side (pin5 to pin8) with a power MOSFET drain. The distance between high voltage terminal and low voltage terminal is 0.762mm (0.3inches), and the wider drain trace is available to enhance thermal dissipation of the IC. • Current Mode PWM control • Built-in Random Switching Function, reducing EMI noise, and simplifying EMI filters, by the slight random change of PWM frequency, fOSC. • Auto Standby Function (Input Power, PIN < 25mW at no load) Normal load operation ----------- PWM mode Light load operation -------------- Standby mode (Burst oscillation) • Built-in Audible Noise Suppression Function for standby mode • Built-in Startup Circuit, reducing power consumption in standby operation, and.


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