N00, N00S Overvoltage Protective Circuits Built-in Switching Power Supply Overview The N00 and the N00S enables high-speed control up to 00 khz and have various protective functions for overcurrent, overvoltage, and thermal protection in order to improve reliability of the power supply. Features 00 khz PWM control frequency and miniaturized Capable of directly driving the large-capacity MOS FET Provided with -channel overcurrent protective function for positive side and negative side, and intermittent operating function as protection when an over-current state advanced further Provided with over-voltage protective and over-heat protective functions Provided with the ON/OFF function to start/stop operating the power supply with external signals and the error amlifier required for secondarry control -DIP package for the N00 and SONF-0D for the N00S Block Diagram Fin Remote Latch Thermal Protection OSC 0 CC Stop Clock Duty Control Meets to F Start N00.±0. N00S (0.) 0.±0.. to I/ Int. mp. + Ref Convert.. Output Cut OFF DC CTL. Signal Triangular PWM Wave Osc. Clock.±0..±0. 0.±0..±0...±0..0±0. 0. + 0. 0.0.±0. Unit : mm -pin DIL Plastic Package (-DIP (B)) (DIP0-P-000D) 0.±0. (0.).±0..±0. +CLM Timer Latch F Output Cut OFF CLM Latch GND The number in square shape is pin number of N00S 0 0.±0. + 0. 0. 0.0 0.±0..0±0. Unit : mm.±0. 0-pin PNFLT Plastic Package (SONF-0D) (SOP00-P-000) includes following four Product lifecycle stage.
bsolute Maximum Ratings (Ta= C) Parameter Symbol Rating Unit Supply voltage Peak output current Maximum continuous output current Power dissipation Operationg ambient temperature N00 Storage temperature N00S CC I O (peak) I O (max.) P D T opr T stg ± ±0.. * 0 to + to + 0 to + * For the N00S, Ta <= C when mounting onto the glass epoxy substrate (substrate size=cm cm 0.cm) Recommended Operating Range (Ta= C) Parameter Symbol Range Operating supply voltage range CC Stop voltage to Electrical Characteristics (Ta= C) Parameter Symbol Condition min typ max Unit Operating voltage renge CC Start voltage CC (start).. Stop voltage CC (stop). Start/stop voltage difference D CC D CC= CC (start) CC (stop) Prestart circuit current CC=. 0 0 0 µ Ta= C I CCL N00 CC=. 0 C Ta C 0 0 0 µ <= < = Circuit current I CCO CC= m ON/OFF pin H threshold voltage TH ON/OFF... ON/OFF pin L threshold voltage... TL ON/OFF ON/OFF pin hysteresis voltage D T ON/OFF 0. 0. 0. Oscillation frequency fosc R=kΩ, R=kΩ, CF=0pF 0 00 0 khz Duty ratio G DUTY R=kΩ, R=kΩ, CF=0pF % Oscillation waveform upper limit voltage OSCH.. Oscillation waveform lower limit voltage Oscilation waveform upper/lower limit voltage difference Output low voltage Output high voltage Overheat protection operating temperature OSCL.. D OSC... OL CC=, I O=m 0.0 0. OL CC=, I O=0m 0.. OL CC=, I O=m 0. OL CC=, I O=0m. OH CC=, I O= m OH CC=, I O= 0m.. T TS 0 0 0 includes following four Product lifecycle stage. W C C C
Pin Descriptions Pin No. DIL SO 0 Symbol Description C Pin to apply the supply voltage to the output transistor OUT OUT-COM F ON/OFF OP IN I IN T ON C F T OFF C T GND CLM CLM + CC pplication Circuit IC output pin. Drives the MOS-FET or bipolar transistor. Output transistor ground pin Detects the mean level of output pulses and provides output duty control and timer control. Pin to turn on/off the IC. The IC stops at H (output= L ) and starts at L. Detects an over-voltage and stops the IC ; the stop state is held. Pin to feed back the output voltage of the power supply. It has internal gain. Pin to feed back the output voltage of the power supply. Pin to connect the resistor which determines the tilting of the charge period of an internally oscillated triangular wave. Pin to connect the capacitance which determines the frequency of an internally oscillated triangular wave. Pin to connect the resistor which determines the tilting of the discharge period of an internally oscillated triangular wave. Pin to connect the capacitance which determines a timer control frequency. Ground pin for the system. Overcurrent detection pin on the negative potential side. Overcurrent detection pin on the positive potential side. Pin to apply the supply voltage. Detects the start and stop voltage. ) N00 flyback application C IN N00 OP F/B CC includes following four Product lifecycle stage. OUT
pplication Circuit (cont.) ) N00 feed-forward application C Power Dissipation PD (mw) 000 00 00 00 00 00 00 00 00 00 Supplementary Descriptions Characteristic Charts N00 P D Ta 0 0 0 0 0 0 0 0 0 mbient Temperature Ta ( C) Thermal Resistance : θj a=. C/W IN N00 Power Dissipation PD (mw) 000 00 00 00 00 00 00 00 00 00 CC N00S P D Ta Mounting onto PCB : Material G Material Glass Epoxy Substrate. Size 0.mm, Thermal Resistance 0 0 0 0 0 0 0 0 0 mbient Temperature Ta ( C) OP F/B ON/OFF includes following four Product lifecycle stage. OUT OUT
Supplementary Descriptions (cont.) Timing Charts In Case of Normal Operation Feedback oltage from IN or I IN PWM Output Internal Clock OUT Output In Case of Current Limiting Operation (Note ) Feedback oltage from IN or I N + CLM CLM OUT Output includes following four Product lifecycle stage. Note ) The F pin voltage should be higher than the T OFF (max.) control start voltage ( <= )... CC.. +0. 0. CC
Supplementary Descriptions (cont.) Timing Charts (cont.) In Case of T OFF (max.) Note ) Control Operation Feedback oltage from IN or I IN Y F Pin oltage Timer Pin oltage OUT Output waveform In Case of Timer Control Operation Timer Pin oltage OUT Output waveform Note ) Y F Pin oltage TOFF (max.) Control Start OSC Start Timer Control Start OUT Start OSC Stop OUT Stop Timer Control Start Note ) In case of current limiting operation (CLM+ >= 0. and CLM = > 0.), T OFF (max.) control and timer control work. Note ) Even during timer control operation, the OFF period of OSC ( OUT) is controlled by T OFF (max.) control. includes following four Product lifecycle stage... CC... CC
Request for your special attention and precautions in using the technical information and semiconductors described in this book () If any of the products or technical information described in this book is to be exported or provided to non-residents, the laws and regulations of the exporting country, especially, those with regard to security export control, must be observed. () The technical information described in this book is intended only to show the main characteristics and application circuit examples of the products, and no license is granted under any intellectual property right or other right owned by our company or any other company. Therefore, no responsibility is assumed by our company as to the infringement upon any such right owned by any other company which may arise as a result of the use of technical information described in this book. () The products described in this book are intended to be used for standard applications or general electronic equipment (such as office equipment, communications equipment, measuring instruments and household appliances). Consult our sales staff in advance for information on the following applications: Special applications (such as for airplanes, aerospace, automobiles, traffic control equipment, combustion equipment, life support systems and safety devices) in which exceptional quality and reliability are required, or if the failure or malfunction of the products may directly jeopardize life or harm the human body. ny applications other than the standard applications intended. () The products and product specifications described in this book are subject to change without notice for modification and/or improvement. t the final stage of your design, purchasing, or use of the products, therefore, ask for the most up-to-date Product Standards in advance to make sure that the latest specifications satisfy your requirements. () When designing your equipment, comply with the range of absolute maximum rating and the guaranteed operating conditions (operating power supply voltage and operating environment etc.). Especially, please be careful not to exceed the range of absolute maximum rating on the transient state, such as power-on, power-off and mode-switching. Otherwise, we will not be liable for any defect which may arise later in your equipment. Even when the products are used within the guaranteed values, take into the consideration of incidence of break down and failure mode, possible to occur to semiconductor products. Measures on the systems such as redundant design, arresting the spread of fire or preventing glitch are recommended in order to prevent physical injury, fire, social damages, for example, by using the products. () Comply with the instructions for use in order to prevent breakdown and characteristics change due to external factors (ESD, EOS, thermal stress and mechanical stress) at the time of handling, mounting or at customer's process. When using products for which damp-proof packing is required, satisfy the conditions, such as shelf life and the elapsed time since first opening the packages. () This book may be not reprinted or reproduced whether wholly or partially, without the prior written permission of Matsushita Electric Industrial Co., Ltd. includes following four Product lifecycle stage.