AN78xx/AN78xxF Series

Transcription

1 3-pin positive output voltage regulator ( type) Overview The N7xx series and the N7xxF series are 3- pin, fixed positive output type monolithic voltage regulators. Stabilized fixed output voltage is obtained from unstable DC input voltage without using any external components. types of fixed output voltage are available; 5, 6, 7,, 9,,, 5,,, and. They can be used widely in power circuits with current capacity of up to. Features No external components : 5, 6, 7,, 9,,, 5,,, Built-in overcurrent limit circuit Built-in thermal overload protection circuit Built-in SO (area of safe operation) protection circuit N7xx series φ3.7±. N7xxF series HSIP3-P- : mm (.35).5±..±.3.± ±.3.5±.3 φ5.3 (.3) (.5).7±. 5.± (3.6) φ3.±. (.) (.5).9±..5±. 7.±. 6.±. 9.± : mm (.73).77±.3.±.5 : Input : Common 3: Output 3.6±.5.5±.5 6.7±.3 7.±.5.7±.3 3.±.5 Block Diagram.5 3 (.).±..±. HSIP3-P-.±.5.5±.5.5± : Input : Common 3: Output Input Pass Tr Current Source Current Limiter Q RSC 3 Output Starter oltage Reference + Error mp. Thermal Protection R R Common

2 bsolute Maximum Ratings at T a = 5 C Parameter Symbol Rating Input voltage I 35 * * Power dissipation N7xx series 5 * 3 P D N7xxF series.5 * 3 W Operating ambient temperature T opr 3 to + C Storage temperature 55 to +5 C * N75/F, N76/F, N77/F, N7/F, N79/F, N7/F, N7/F, N75/F, N7/F * N7/F, N7/F *3 Follow the derating curve. When T j exceeds 5 C, the internal circuit cuts off the output. T stg Electrical Characteristics at T a = 5 C N75, N75F (5 type) O T j = 5 C tolerance O I = to, I O = 5 to, T j = to 5 C, P D * I = 7.5 to 5, T j = 5 C 3 m I = to, T j = 5 C 5 m I O = 5 to.5, T j = 5 C 5 m I O = 5 to 75, T j = 5 C 5 5 m T j = 5 C 3.9 fluctuation to input (IN) I = 7.5 to 5, T j = 5 C.3 fluctuation to load (L) I O = 5 to, T j = 5 C no f = Hz to khz µ RR I = to, I O =, f = Hz 6 DIF(min) I O =, T j = 5 C f = khz 7 I = 5, T j = 5 C T j = 5 C temperature coefficient O/T a I O = 5, T j = to 5 C m/ C Note ) The specified condition T j = 5 C means that the test should be carried out within so short a test time (within ms) that the Note ) Unless otherwise specified, I =, I O = 5, C I =.33µF and C O =.µf. * N7xx series: 5W, N7xxF series:.5w.3

3 Electrical Characteristics at T a = 5 C (continued) N76, 76F (6 type) O T j = 5 C tolerance O I = 9 to, I O = 5 to, T j = to 5 C, P D * fluctuation to input fluctuation to load temperature coefficient I =.5 to 5, T j = 5 C 5 m I = 9 to 3, T j = 5 C.5 6 m (IN) I O = 5 to.5, T j = 5 C I O = 5 to 75, T j = 5 C T j = 5 C I =.5 to 5, T j = 5 C (L) I O = 5 to, T j = 5 C no f = Hz to khz µ RR I = 9 to 9, I O =, f = Hz 59 DIF(min) I O =, T j = 5 C f = khz T j = 5 C I = 5, T j = 5 C O/T a I O = 5, T j = to 5 C m m m/ C Note ) The specified condition T j = 5 C means that the test should be carried out within so short a test time (within ms) that the Note ) Unless otherwise specified, I =, I O = 5, C I =.33µF and C O =.µf. * N7xx series: 5W, N7xxF series:.5w N77, 77F (7 type) O T j = 5 C tolerance O I = to, I O = 5 to, T j = to 5 C, P D * fluctuation to input fluctuation to load temperature coefficient I = 9.5 to 5, T j = 5 C 5 m I = to 5, T j = 5 C.5 7 m (IN) I O = 5 to.5, T j = 5 C I O = 5 to 75, T j = 5 C T j = 5 C I = 9.5 to 5, T j = 5 C (L) I O = 5 to, T j = 5 C no f = Hz to khz 6 µ RR I = to, I O =, f = Hz 57 I O =, T j = 5 C DIF(min) f = khz T j = 5 C I = 5, T j = 5 C O/T a I O = 5, T j = to 5 C m m m/ C Note ) The specified condition T j = 5 C means that the test should be carried out within so short a test time (within ms) that the Note ) Unless otherwise specified, I =, I O = 5, C I =.33µF and C O =.µf. * N7xx series: 5W, N7xxF series:.5w 3

4 Electrical Characteristics at T a = 5 C (continued) N7, 7F ( type) O T j = 5 C tolerance O I = to 3, I O = 5 to, T j = to 5 C, P D * 7.6. fluctuation to input fluctuation to load temperature coefficient I =.5 to 5, T j = 5 C 6 6 m I = to 7, T j = 5 C m (IN) I O = 5 to.5, T j = 5 C I O = 5 to 75, T j = 5 C T j = 5 C I =.5 to 5, T j = 5 C (L) I O = 5 to, T j = 5 C no f = Hz to khz 5 µ RR I =.5 to.5, I O =, f = Hz 56 DIF(min) I O =, T j = 5 C f = khz T j = 5 C I = 5, T j = 5 C O/T a I O = 5, T j = to 5 C m m m/ C Note ) The specified condition T j = 5 C means that the test should be carried out within so short a test time (within ms) that the Note ) Unless otherwise specified, I =, I O = 5, C I =.33µF and C O =.µf. * N7xx series: 5W, N7xxF series:.5w N79, 79F (9 type) O T j = 5 C tolerance O I = to, I O = 5 to, T j = to 5 C, P D * I =.5 to 6, T j = 5 C 7 I = to, T j = 5 C 9 fluctuation to input fluctuation to load temperature coefficient (IN) (L) I O = 5 to, T j = 5 C no f = Hz to khz 57 µ RR I = to, I O =, f = Hz 56 DIF(min) O/T a I O = 5 to.5, T j = 5 C I O = 5 to 75, T j = 5 C T j = 5 C I =.5 to 6, T j = 5 C I O =, T j = 5 C f = khz I = 6, T j = 5 C T j = 5 C I O = 5, T j = to 5 C m m m m m/ C Note ) The specified condition T j = 5 C means that the test should be carried out within so short a test time (within ms) that the Note ) Unless otherwise specified, I = 5, I O = 5, C I =.33µF and C O =.µf. * N7xx series: 5W, N7xxF series:.5w

5 Electrical Characteristics at T a = 5 C (continued) N7, 7F ( type) O T j = 5 C 9.6. tolerance O I = 3 to 5, I O = 5 to, T j = to 5 C, P D * I =.5 to 7, T j = 5 C I = 3 to 9, T j = 5 C.5 fluctuation to input fluctuation to load temperature coefficient (IN) m m m m (L) I O = 5 to, T j = 5 C no f = Hz to khz 63 µ RR I = 3 to 3, I O =, f = Hz 56 DIF(min) O/T a I O = 5 to.5, T j = 5 C I O = 5 to 75, T j = 5 C T j = 5 C I =.5 to 7, T j = 5 C I O =, T j = 5 C f = khz I = 7, T j = 5 C T j = 5 C I O = 5, T j = to 5 C m/ C Note ) The specified condition T j = 5 C means that the test should be carried out within so short a test time (within ms) that the Note ) Unless otherwise specified, I = 6, I O = 5, C I =.33µF and C O =.µf. * N7xx series: 5W, N7xxF series:.5w N7, 7F ( type) O T j = 5 C.5.5 tolerance O I = 5 to 7, I O = 5 to, T j = to 5 C, P D *..6 I =.5 to 3, T j = 5 C I = 6 to, T j = 5 C 3 fluctuation to input fluctuation to load temperature coefficient (IN) m m m m (L) I O = 5 to, T j = 5 C no f = Hz to khz 75 µ RR I = 5 to 5, I O =, f = Hz 55 DIF(min) O/T a I O = 5 to.5, T j = 5 C I O = 5 to 75, T j = 5 C T j = 5 C I =.5 to 3, T j = 5 C I O =, T j = 5 C f = khz I = 3, T j = 5 C T j = 5 C I O = 5, T j = to 5 C. m/ C Note ) The specified condition T j = 5 C means that the test should be carried out within so short a test time (within ms) that the Note ) Unless otherwise specified, I = 9, I O = 5, C I =.33µF and C O =.µf. * N7xx series: 5W, N7xxF series:.5w 5

6 Electrical Characteristics at T a = 5 C (continued) N75, 75F (5 type) tolerance O O T j = 5 C I = to 3, I O = 5 to, T j = to 5 C, P D * I = 7.5 to 3, T j = 5 C 3 I = to 6, T j = 5 C 3 5 fluctuation to input fluctuation to load temperature coefficient (IN) (L) no RR DIF(min) O/T a I O = 5 to.5, T j = 5 C I O = 5 to 75, T j = 5 C T j = 5 C I = 7.5 to 3, T j = 5 C I O = 5 to, T j = 5 C f = Hz to khz I =.5 to.5, f = Hz I O =, T j = 5 C f = khz I = 3, T j = 5 C T j = 5 C I O = 5, T j = to 5 C m m m m µ m/ C Note ) The specified condition T j = 5 C means that the test should be carried out within so short a test time (within ms) that the Note ) Unless otherwise specified, I = 3, I O = 5, C I =.33µF and C O =.µf. * N7xx series: 5W, N7xxF series:.5w N7, 7F ( type) O T j = 5 C tolerance O I = to 33, I O = 5 to, T j = to 5 C, P D * 7..9 I = to 33, T j = 5 C 36 I = to 3, T j = 5 C fluctuation to input fluctuation to load temperature coefficient (IN) m m m m (L) I O = 5 to, T j = 5 C no f = Hz to khz µ RR I = to 3, I O =, f = Hz 53 DIF(min) O/T a I O = 5 to.5, T j = 5 C I O = 5 to 75, T j = 5 C T j = 5 C I = to 33, T j = 5 C I O =, T j = 5 C f = khz I = 35, T j = 5 C T j = 5 C I O = 5, T j = to 5 C m/ C Note ) The specified condition T j = 5 C means that the test should be carried out within so short a test time (within ms) that the Note ) Unless otherwise specified, I = 7, I O = 5, C I =.33µF and C O =.µf. * N7xx series: 5W, N7xxF series:.5w 6

7 Electrical Characteristics at T a = 5 C (continued) N7, 7F ( type) O T j = 5 C 9.. tolerance O I = to 35, I O = 5 to, T j = to 5 C, P D * 9 I = 3 to 35, T j = 5 C 5 I = 6 to 3, T j = 5 C 5 fluctuation to input fluctuation to load temperature coefficient (IN) m m m m (L) I O = 5 to, T j = 5 C no f = Hz to khz µ RR I = to 3, I O =, f = Hz 53 DIF(min) O/T a I O = 5 to.5, T j = 5 C I O = 5 to 75, T j = 5 C T j = 5 C I = 3 to 35, T j = 5 C I O =, T j = 5 C f = khz I = 35, T j = 5 C T j = 5 C I O = 5, T j = to 5 C.. m/ C Note ) The specified condition T j = 5 C means that the test should be carried out within so short a test time (within ms) that the Note ) Unless otherwise specified, I = 9, I O = 5, C I =.33µF and C O =.µf. * N7xx series: 5W, N7xxF series:.5w N7, 7F ( type) O T j = 5 C 3 5 tolerance O I = to 3, I O = 5 to, T j = to 5 C, P D *. 5. I = 7 to 3, T j = 5 C I = 3 to 36, T j = 5 C 6 fluctuation to input fluctuation to load temperature coefficient (IN) m m m m (L) I O = 5 to, T j = 5 C no f = Hz to khz 7 µ RR I = to 3, I O =, f = Hz 5 DIF(min) O/T a I O = 5 to.5, T j = 5 C I O = 5 to 75, T j = 5 C T j = 5 C I = 7 to 3, T j = 5 C I O =, T j = 5 C f = khz I = 3, T j = 5 C T j = 5 C I O = 5, T j = to 5 C.. m/ C Note ) The specified condition T j = 5 C means that the test should be carried out within so short a test time (within ms) that the Note ) Unless otherwise specified, I = 33, I O = 5, C I =.33µF and C O =.µf. * N7xx series: 5W, N7xxF series:.5w 7

8 Main Characteristic Curve Power dissipation PD (W) 6 6 P D T a (N7xx series) () () (3) () 6 mbient temperature T a ( C) Power dissipation PD (W) 6 6 P D T a (N7xxF series) () () (3) () 6 mbient temperature T a ( C) DIF(min.) () DIF(min.) T j IO = 5 6 Junction temperature T j ( C) Thermal resistance value: R th(j-c) = 5 C/W (max.) R th(j-a) = 65 C/W (max.) Thermal resistance value: R th(j-c) =. C/W (max.) R th(j-a) = 65 C/W (max.) Installation condition to heat sink Tightening torque 6kg cm Heat radiation compound used () Infinite heat sink: 5.W () 5 C/W heat sink:.5w (3) 5 C/W heat sink: 6.3W () Without heat sink:.93w Installation condition to heat sink Tightening torque 6kg cm Heat radiation compound used () Infinite heat sink:.5w () 5 C/W heat sink: 7.3W (3) 5 C/W heat sink:.5w () Without heat sink:.93w fluctuation (m) Input transient response N75 6 Time t (µs) 5 5 Input voltage I () fluctuation () Load transient response N Time t (µs) Load current IO () O () Current limiting characteristic I = Tj = 5 C N Output current I O ()

9 Basic Regulator Circuit Input C I 3 N7xx N7xxF Common Output C O C I : C I is necessary when the input line is long. C O: C O improves the transient response. Usage Notes. Cautions for a basic circuit I C I D i 3 Figure C O O C I : When a wiring from a smoothing circuit to a three-pin regulator is long, it is likely to oscillate in output. capacitor of.µf to.7µf should be connected near an input pin. C O : When any sudden change of load current is likely to occur, connect an electrolytic capacitor of µf to µf to improve a transitional response of output voltage. D i : Normally unnecessary. But add it in the case that there is a residual voltage at the output capacitor Co even after switching off the supply power because a current is likely to flow into an output pin of the IC and damage the IC.. Other caution items ) Short-circuit between the input pin and GND pin If the input pin is short-circuitted to GND or is cut off when a large capacitance capacitor has been connected to the IC's load, a voltage of a capacitor connected to an output pin is applied between input/output of the IC and this likely results in damage of the IC. It is necessary, therefore, to connect a diode, as shown in figure, to counter the reverse bias between input/output pins. Figure ) Floating of GND pin If a GND pin is made floating in an operating mode, an unstabilized input voltage is outputted. In this case, a thermal protection circuit inside the IC does not normally operate. In this state, if the load is short-circuited or overloaded, it is likely to damage the IC. pplication Circuit Examples. Current bootstrap circuit. djustable output regulator In 3 GND Out + CO Output I.33µF 3Ω Q 3 N7xx N7xxF I O.µF O I O 3 N7xx N7xxF O' R O = O' + + O' R R R Note) O varies due to sample to sample variation of. Never fail to adjust individually with R. 9

10 Request for your special attention and precautions in using the technical information and semiconductors described in this material () n export permit needs to be obtained from the competent authorities of the Japanese Government if any of the products or technologies described in this material and controlled under the "Foreign Exchange and Foreign Trade Law" is to be exported or taken out of Japan. () The technical information described in this material is limited to showing representative characteristics and applied circuit examples of the products. It does not constitute the warranting of industrial property, the granting of relative rights, or the granting of any license. (3) The products described in this material 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 material are subject to change without notice for reasons of 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. (5) When designing your equipment, comply with the guaranteed values, in particular those of maximum rating, the range of operating power supply voltage and heat radiation characteristics. 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, redundant design is recommended, so that such equipment may not violate relevant laws or regulations because of the function of our products. (6) When using products for which dry packing is required, observe the conditions (including shelf life and after-unpacking standby time) agreed upon when specification sheets are individually exchanged. (7) No part of this material may be reprinted or reproduced by any means without written permission from our company. Please read the following notes before using the datasheets. These materials are intended as a reference to assist customers with the selection of Panasonic semiconductor products best suited to their applications. Due to modification or other reasons, any information contained in this material, such as available product types, technical data, and so on, is subject to change without notice. Customers are advised to contact our semiconductor sales office and obtain the latest information before starting precise technical research and/or purchasing activities. B. Panasonic is endeavoring to continually improve the quality and reliability of these materials but there is always the possibility that further rectifications will be required in the future. Therefore, Panasonic will not assume any liability for any damages arising from any errors etc. that may appear in this material. C. These materials are solely intended for a customer's individual use. Therefore, without the prior written approval of Panasonic, any other use such as reproducing, selling, or distributing this material to a third party, via the Internet or in any other way, is prohibited. MR