 |
|
| If you can't view the Datasheet, Please click here to try to view without PDF Reader . |
|
|
|
| If you can't view the Datasheet, Please click here to try to view without PDF Reader . |
|
|
| Datasheet File OCR Text: |
| NJM317 ADJUSTABLE 3-TERMINAL POSITIVE VOLTAGE REGULATOR GENERAL DESCRIPTION The NJM317 is adjustable 3-terminal positive voltage regulator IC. It is capable of adjustment from typical 1.25V to 37V output voltage range with two resistors. It is capable of supplying in excess of 1.5A with heat sink. The NJM317 is suitable for the power supply of VCR, CD player and others. PACKAGE OUTLINE FEATURES * Operating Voltage (+4.25V to +40V) * Adjustable Output Down to 1.2V * Guarantee'd 1.5A Output Current * Line Regulation typically (0.01%/V) * Load Regulation typically (0.1%) * 80dB Ripple Rejection * Package Outline TO-220F * Bipolar Technology NJM317F NJM317DL1 1. Adjustment 2. Output 3. Input EQUIVALENT CIRCUIT Ver.2003-07-18 -1- NJM317 ABSOLUTE MAXIMUM RATINGS PARAMETER Input-Output Differential Voltage Power Dissipation Operating Temperature Range (Junction) (Ambient) Storage Temperature Range SYMBOL VIN - VO PD Topr (j) Topr (a) Tstg RATINGS 40 (TC=25C) TO-220F 16 (TC70C) TO-252 10 (Tc25C) 1 (Ta25C) -40 to +150 -40 to +85 -50 to +150 (Ta=25C) UNIT V W C C THERMAL CHARACTERISTICS TO-220F Junction-To-Ambient Thermal Resistance Junction-To-Case jc 5 12.5 ja 60 TO-252 125 C/W ELECTRICAL CHARACTERISTICS (VIN - VO =5V, IO=500mA, CIN=0.1F, CO=1F, Tj=25C) Measurement is to be conducted in pulse testing. PARAMETER SYMBOL VREF VREF-VIN VREF-IO VREF-T IADJ IADJ - VIN IADJ - IO VO - VIN VO - IO IO(MIN) IO(PEAK) VNO RR 3V (VIN - VO) 40V, IO=100mA 10mA IO 1.5A (TO-220F) 10mA IO 500mA (TO-252) 3V (VIN - VO) 40V, IO=100mA 10mA IO 1.5A (TO-220F) 10mA IO 500mA (TO-252) VO 5V VO > 5V (VIN - VO) = 40V 5V (VIN - VO) 15V (VIN - VO) = 40V 10Hz f 10kHz (RMS) VO =10V, f= 120Hz, VIN =1Vrms CADJ=0 CADJ=10F TEST CONDITION 3V (VIN - VO) 40V, IO=100mA 10mA IO 1.5A (TO-220F) 10mA IO 500mA (TO-252) 0 Tj 125C MIN. 1.2 1.2 1.2 1.2 TYP. 1.25 1.25 1.25 1.25 5 50 0.2 0.2 0.2 0.01 MAX. 1.3 1.3 1.3 1.3 100 5 5 5 0.04 UNIT Reference Voltage Reference Voltage Thermal Change Adjustment Pin Current Adjustment Pin Current Change Line Regulation Load Regulation Minimum Load Current Peak Output Current RMS Output Noise Voltage Ripple Rejection Ratio V mV A A %/V 1.5 0.15 66 5 0.1 3.5 2.2 0.4 0.001 65 80 25 0.5 10 - mV % mA A %/VO dB -2- Ver.2003-07-18 NJM317 TEST CIRCUIT 1) (Reference Voltage Thermal Change), (Adjustment Pin Current Change), (Line Regulation), (Load Regulation), (Peak Output Current), (RMS Output Noise Current) 2) Minimum Load Current IOMIN: Minimum Io for VO = VREF (Typical 1.25V) (VIN = 40 + VREF) 3) Ripple Rejection Ripple Rejection = 20log10 eIN [dB] eo Ver.2003-07-18 -3- NJM317 TYPICAL APPLICATIONS 1) VO = 1.25V to 37V Adjustable Voltage Regulator VO = VREF x R2 1 + R1 + R2 x IADJ 2) Selected Output Voltage The transistors Q3 are switched by selective signal inputs and the output voltage VO is controlled by the transistor on or off. (Example) When all transistor is off, VO * * VREF x = R2 1 + R1 When the transistor Q3 is on, and others are off. VO * * VREF x = *IADJ ignore. Selective Signal Inputs 3) Regulater with Protection Diodes R2 x R3 1 + (R2 + R3) x R1 D1 protects about CO D2 protects about CADJ -4- Ver.2003-07-18 NJM317 4) Constant Current Regulator R1 125 10mA IO 1.5A IO = VREF R1 NJM317FA NJM317DL1 Ver.2003-07-18 -5- NJM317 TYPICAL CHARACTERISTICS Minimum Load Current Peak Output Current vs. Input-Output Differential Voltage Output Voltage vs. Input Voltage. Ripple Rejection vs. Frequency Ripple Rejection vs. Output Voltage Ripple Rejection vs. Output Current -6- Ver.2003-07-18 NJM317 TYPICAL CHARACTERISTICS Adjustment Pin Current vs. Temperature Reference Voltage vs. Temperature Load Regulation vs. Temperature Line Regulation vs. Temperature Thermal Shutdown [CAUTION] The specifications on this databook are only given for information , without any guarantee as regards either mistakes or omissions. The application circuits in this databook 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. Ver.2003-07-18 -7- |
Price & Availability of NJM317
 |
|
|
|
|
All Rights Reserved © IC-ON-LINE 2003 - 2022 |
| [Add Bookmark] [Contact Us] [Link exchange] [Privacy policy] |
|
Mirror Sites : [www.datasheet.hk]
[www.maxim4u.com] [www.ic-on-line.cn]
[www.ic-on-line.com] [www.ic-on-line.net]
[www.alldatasheet.com.cn]
[www.gdcy.com]
[www.gdcy.net] |