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| 1.0A Adjustable Positive Voltage Regulator LA317 1.0A Adustable Positive Voltage Regulator General Description * The LA317 is an adjustable 3-terminal positive voltage regulator with a very low dropout of 1.2V at 1A output current. Using 2 external resistors, the LA317 can provide an adjustable output voltage down to 1.25V. * The LA317 is available in standard SOT-223, D-PACK, TO-220 and D2-PACK packages. TO-220 D2-PACK (TO-263) SOT-223 D-PACK (TO-252) Features * * * * * * * Typical 1% output voltage tolerance Typical 0.01%/V line reglation Typical 0.2% Load Regulation Very low dropout voltage: 1.2V at 1A output current Trimmed current limit On-chip thermal protection RoHS Compliance Applications * * * * PC Motherboard LCD Monitor Graphic Card DVD Player * Network Interface Card/Switch * Telecom Equipment * Printer and other Peripheral Equipment Ordering Information TAITRON COMPONENTS INCORPORATED www.taitroncomponents.com Tel: Fax: (800)-TAITRON (800)-824-8766 (800)-TAITFAX (800)-824-8329 (661)-257-6060 (661)-257-6415 Rev. A/DX 2007-06-04 Page 1 of 9 1.0A Adjustable Positive Voltage Regulator LA317 Pin Configuration Outline: H SOT-223 Outline: D D-PACK (TO-252) Outline: T TO-220 Outline: MC D2-PACK (TO-263) Block Diagram Rev. A/DX 2007-06-04 www.taitroncomponents.com Page 2 of 9 1.0A Adjustable Positive Voltage Regulator LA317 Absolute Maximum Ratings (Ta=25 C, unless otherwise specified) Symbol VIN-VOUT IO TJ TOPR TSTG TLEAD ESD Description Input - Output Voltage Differential Max. Output Current Operating Junction Temperature Operating Temperature Range Storage Temperature Range Lead Temperature (Soldering, 10sec.) ESD, Human Body Model (Max.) Ratings 15 1 150 0 ~ 125 -65 ~ 150 300 4000 Unit V A C C C C V Electrical Characteristics (Typicals and limits apply for TJ=25C, P Maximum Power Dissipation unless otherwise specified)(Note) Symbol VREF Description Reference Input Voltage LA317 Min. Typ. Max. Unit V %/V % %/W V A A A mA dB % % % Conditions 10mAIOUT1A VIN-VOUT10V, 3V 1.20 1.2 60 - 1.25 0.01 0.2 0.04 1.2 1.5 50 0.2 3.5 75 1 0.3 0.003 1.30 0.04 0.4 0.07 1.3 1.8 100 5 10 - VOUT/VOUT Line Regulation VOUT V ILIMIT IADJ IADJ IL(MIN) PSRR Load Regulation Thermal Regulation Dropout Voltage Current Limit Adjustable Pin Current Adjustable Pin Current Change Minimum Load Current Ripple Rejection Temperature Stability Long Term Stability RMS Output Noise (% of VOUT) IOUT20mA, 3VVIN-VOUT10V, VIN-VOUT=2V, 10mAIOUT1A 20ms Pulse IOUT=1A VIN-VOUT=2V 1.4VVIN-VOUT10V, 10mAIOUT1A 3VVIN-VOUT15V f=120Hz, COUT=1F Tantalum, VIN-VOUT=3V, IOUT=1A TJ=125 C, 1000 Hours TJ=25 C, 10Hzf10KHz Rev. A/DX 2007-06-04 www.taitroncomponents.com Page 3 of 9 1.0A Adjustable Positive Voltage Regulator LA317 Symbol Description LA317 Min. Typ. Max. Unit Conditions SOT-223 Thermal Resistance Junction to Case Thermal Shutdown - 15 10 4.5 4 150 C C/W TO-252 TO-220 TO-263 Junction Temperature Note: Thermal Shutdown C Hysteresis Maximum Power Dissipation is Package Type and Case Temperature dependent. Pls see Fig.8. Typical Characteristics Curves Fig.1- Dropout Voltage vs. Output Current Output Voltage Deviation (%) Output Current (A) Fig.3- Reference Voltage vs. Temperature Output Voltage (V) Fig.2- Load Regulation vs. Temperature Ambient Temperature ( C) Fig.4- Output Voltage vs. Temperature Reference Voltage (V) Ambient Temperature ( C) Output Voltage (V) Ambient Temperature ( C) Rev. A/DX 2007-06-04 www.taitroncomponents.com Page 4 of 9 1.0A Adjustable Positive Voltage Regulator LA317 Typical Characteristics Curves (Continued) Fig.5- Minimum Load Current vs. Temperature Minimum Load Current (mA) Fig.6- Adjust Pin Current vs. Temperature Adjust Current (A) Ambient Temperature ( C) Ambient Temperature ( C) Fig.7- Short-Circuit Current vs. Temperature Short-Circuit Current (A) Fig.8- Maximum Power Dissipation Power (W) Junction Temperature ( C) Case Temperature ( C) Rev. A/DX 2007-06-04 www.taitroncomponents.com Page 5 of 9 1.0A Adjustable Positive Voltage Regulator LA317 Typical Characteristics Curves (Continued) Fig.9- Ripple Rejection vs. Frequency Fig.10- Line Transient Response Ripple Rejection (dB) Frequency (Hz) VOUT (200mV/Div) Time (200s/Div) Fig.11- Load Transient Response VOUT (200mV/Div) Time (200s/Div) Rev. A/DX 2007-06-04 www.taitroncomponents.com Page 6 of 9 1.0A Adjustable Positive Voltage Regulator LA317 Typical Application Dimensions in inches (mm) SOT-223 Rev. A/DX 2007-06-04 www.taitroncomponents.com Page 7 of 9 1.0A Adjustable Positive Voltage Regulator LA317 Dimensions in inches (mm) (Continued) D-PACK (TO-252) TO-220 Rev. A/DX 2007-06-04 www.taitroncomponents.com Page 8 of 9 1.0A Adjustable Positive Voltage Regulator LA317 How to contact us: D2-PACK (TO-263) US HEADQUARTERS 28040 WEST HARRISON PARKAWAY, VALENCIA, CA 91355-4162 Tel: (800) TAITRON (800) 824-8766 (661) 257-6060 Fax: (800) TAITFAX (800) 824-8329 (661) 257-6415 Email: taitron@taitroncomponents.com Http://www.taitroncomponents.com TAITRON COMPONENTS MEXICO, S.A .DE C.V. BOULEVARD CENTRAL 5000 INTERIOR 5 PARQUE INDUSTRIAL ATITALAQUIA, HIDALGO C.P. 42970 MEXICO Tel: +52-55-5560-1519 Fax: +52-55-5560-2190 TAITRON COMPONETS INCORPORATED E REPRESENTACOES DO BRASIL LTDA RUA DOMINGOS DE MORAIS, 2777, 2.ANDAR, SALA 24 SAUDE - SAO PAULO-SP 04035-001 BRAZIL Tel: +55-11-5574-7949 Fax: +55-11-5572-0052 TAITRON COMPONETS INCORPORATED, SHANGHAI REPRESENTATIVE OFFICE CROSS REGION PLAZA, 899 LINGLING ROAD, SUITE 18C, SHANGHAI, 200030, CHINA Tel: +86-21-5424-9942 Fax: +86-21-5424-9931 Rev. A/DX 2007-06-04 www.taitroncomponents.com Page 9 of 9 |
Price & Availability of LA317H-XX-TR30
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