NJW4154GM1-A Application Board

Transcription

1 Board Information Board Name: NJW4154 CG659 Function: Switching Regulator IC for Buck Converter Current Mode Control w/ 40V/3A MOSFET Application Spec IC: Input voltage: Output voltage: Output current: Oscillator Frequency: ON/OFF Function: NJW4154GM1-A 12V 5V 3A 300kHz typ. Operate with high at EN/SYNC pin, and standby with low. Board Image - 1 -

2 Application Circuit VIN+=12V C IN 10 F/50V VIN- EN/SYNC High: ON Low: OFF (Standby) PG VPG R PG (Optional) EN/SYNC PG Pow er Good (NJW4154GM1 only) V + NJW4154 IN- SW GND SBD L 4.7 H/5.6A C FB 15pF R FB 0 C OUT (Short) 100 F/6.3V VOUT+=5V R2 160k R1 30k VOUT- The circuit operates when EN/SYNC pin is high. The IC operates with 1.6V or higher at EN/SYNC pin

3 PCB Layout - 3 -

4 Efficiency η (%) Output Voltage V OUT (V) NJW4154GM1-A Application Board BOM Reference Qty. Part Number Description Manufacturer IC 1 NJW4154GM1-A Internal 3A MOSFET SW.REG. IC New JRC L 1 CDRH8D43NP-4R7N Inductor 4.7 H, 5.6A Sumida SBD 1 MBRS540T3G Schottky Diode 40V, 5A ON semiconductor C IN 1 UMK325BJ106MM Ceramic Capacitor F, 50V, X5R Taiyo Yuden C OUT 1 GRM32EB30J107ME16 Ceramic Capacitor F, 6.3V, B Murata C FB 1 15pF Ceramic Capacitor pF, 50V, CH Std. R1 1 30k Resistor k, 1%, 0.1W Std. R k Resistor k, 1%, 0.1W Std. R FB 1 0 (Short) Resistor , 0.1W Std. R PG 0 (Optional) Optional The resistor of the back side are 0 (Short). Application Characteristics Efficiency vs. Output Current (A ver., V IN =12V, V OUT =5V, Ta=25 C) f=300khz L=4.7 H Output Voltage vs. Output Current (A ver., V IN =12V, Ta=25 C) f=300khz L=4.7 H Output Current I OUT (ma) Output Current I OUT (ma) - 4 -

5 Notes 1. The product specifications and descriptions listed in this document and/or related document are subject to change at any time, without notice. 2. New JRC strives to produce reliable and high quality products. New JRC's products are intended for specific applications and require proper maintenance and handling. To enhance the performance and service of New JRC's products, the devices, machinery or equipment into which they are integrated should undergo preventative maintenance and inspection at regularly scheduled intervals. Failure to properly maintain equipment and machinery incorporating these products can result in catastrophic system failures. 3. The specifications on this document and/or related document are only given for information, without any guarantee as regards either mistakes or omissions. The application circuits in this document and/or related document are described only to show representative usages of the product and not intended for the guarantee or permission of any right including the industrial rights. All other trademarks mentioned herein are property of their respective companies. 4. To ensure the highest levels of reliability, New JRC products must always be properly handled. The introduction of external contaminants (e.g. dust, oil or cosmetics) can result in failures of products. 5. New JRC offers a variety of products intended for particular applications. It is important that customer select the proper component for your intended application. You may contact New JRC's sale's office if you are uncertain about the products listed in this document and/or related document. 6. Special care is required in designing devices, machinery or equipment which demands high levels of reliability. This is particularly important when designing critical components or systems whose failure can foreseeably result in situations that could adversely affect health or safety. In designing such critical devices, equipment or machinery, careful consideration should be given to, amongst other things, their safety design, fail-safe design, back-up and redundancy systems, and diffusion design. 7. The products listed in the document and/or related document may not be appropriate for use in certain equipment where reliability is critical or where the products may be subjected to extreme conditions. You should consult our sales office before using the products in any of the following types of equipment. Aerospace Equipment Equipment Used in the Deep sea Power Generator Control Equipment (Nuclear, Steam, Hydraulic) Life Maintenance Medical Equipment Fire Alarm/Intruder Detector Vehicle Control Equipment (automobile, airplane, railroad, ship, etc.) Various Safety Devices 8. New JRC s products described in this document and/or related document are designed not to have radiation resistance. 9. New JRC's products have been designed and tested to function within controlled environmental conditions. Do not use products under conditions that deviate from methods or applications specified in this document and/or related document. Failure to employ New JRC products in the proper applications can lead to deterioration, destruction or failure of the products. New JRC shall not be responsible for any bodily injury, fires or accident, property damage or any consequential damages resulting from misuse or misapplication of its products. Products are sold without warranty of any kind, either express or implied, including but not limited to any implied warranty of merchantability or fitness for a particular purpose. 10. Warning for handling Gallium and Arsenic (GaAs) Products (Applying to GaAs MMIC, Photo Reflector). Those Products uses Gallium (Ga) and Arsenic (As) which are specified as poisonous chemicals by law. For the prevention of a hazard, does not burn, destroy, or process chemically to make them as gas or power. When the product is disposed, please follow the related regulation and do not mix this with general industrial waste or household waste. 11. Please use the product according to applicable environmental laws and regulations such as RoHS directive. For details including RoHS compatibility, please contact our sales office. We are not responsible for any damage or loss resulting from none compliance applicable laws or regulations. 12. In providing the products and technologies described in this document and/or related document to other countries, customer must comply with the procedures and provisions stipulated in all applicable export laws and regulations