0.5 A Ultra Low Dropout Voltage Regulator LD78DM15 - LD78DM50 0.5A Ultra Low Dropout Voltage Regulator General Description • LD78DMxx is three terminal fixed positive ultra low dropout voltage regulator with a dropout voltage below 0.6V at 0.5A output current. DPAK (TO-252) • They are used to provide a stabilized output voltage from a fluctuating DC input voltage. LD78DMxx is available in 7 fixed output voltages:1.5V/1.8V/2.0V/2.5V/3.0V/3.3V/5.0V. • LD78DMxx has multi functions such as over current protection and over heat protection. It is suitable for various applications that required supply current up to 0.5 A. • The LD78DMxx is available in DPAK (TO-252) ,TO-220F and SOT-223 Packages TO-220F . SOT-223 Features • Output Current up to 0.5 A • • • • • • Input Voltage up to 16V Low Drop Output Voltage:below 0.6V at 0.5A output current Over Current Protection function Over Heat Protection function Low Quiescent Current :Typical 0.8mA RoHS Compliance and Halogen Free Applications • High Efficiency Linear Regulator • Post Regulation for Switching Supply • Microprocessor Power Supply • Mother Board 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. B/LX Page 1 of 13 0.5A Ultra Low Dropout Voltage Regulator LD78DM15 - LD78DM50 Ordering Information Pin Configuration Block Diagram DPAK (TO-252) 1: INPUT 2: GND 3: OUTPUT TO-220F 1: INPUT 2: GND 3: OUTPUT SOT-223 1: INPUT 2: GND 3: OUTPUT Rev. B/LX www.taitroncomponents.com Page 2 of 13 0.5A Ultra Low Dropout Voltage Regulator LD78DM15 - LD78DM50 Absolute Maximum Ratings(TJ=25° C, Unless Otherwise Specified) Description Ratings Unit VIN Input Voltage 16 V IO Output Current 0.5 A Symbol Power Dissipation (No Heatsink) PD Power Dissipation (Infinite Heatsink) DPAK (TO-252) TO-220F SOT-223: (Note) DPAK (TO-252) TO-220F SOT-223: 1.3 2.0 1.0 W 13 TJ Junction Temperature 20.8 8.3 125 TOPR Operation Temperature Range -20 to 80 °C TSTG Storage Temperature Range -30 to 125 °C TLEAD Soldering Temperature (10Sec) 260 °C °C (Note):Package mounted on FR-4 PCB 36x18x1.5mm3 :Mounting pad for GND lead min 6mm2 . Rev. B/LX www.taitroncomponents.com Page 3 of 13 0.5A Ultra Low Dropout Voltage Regulator LD78DM15 - LD78DM50 Electrical Characteristics (TJ=25° C, VIN=3.8V,Unless Otherwise Specified) Symbol Description LD78DM15 Unit Test Conditions 1.55 V 1.5 1.566 V VIN=3.8V,IO=0.25A 2.8V≤VIN≤12V, 5mA ≤IO ≤0.5A 0°C≤Ti≤125°C Min. Typ. Max. 1.45 1.5 1.434 VO Output Voltage ∆VLINE Line Regulation - 5 20 mV 2.8V≤VIN≤12V,IO=0.25A ∆VLOAD Load Regulation - 5 20 mV VIN=3.8V ,5mA ≤IO ≤0.5A - 0.5 0.7 - 0.6 - - 0.8 1.8 Dropout Voltage VD V Quiescent Current IQ ISQ PSRR Power Supply Ripple Rejection Ratio IO=0.5A 2.8V≤VIN≤12V,IO=0A mA - 10 20 - 0.7 5 - 10 30 - 75 - µV 53 65 - dB Starting Quiescent Current Output Noise Voltage eN IO=0.25A mA 2.8V≤VIN≤12V,IO=0.5A VIN=2.1V, IO=0A VIN=2.5V, IO=0.5A 10Hz≤f≤100KHz VIN=3.8V,IO=50mA 2.8V≤VIN≤12V, IO=50mA , f=120Hz Electrical Characteristics (TJ=25° C, VIN=3.8V, Unless Otherwise Specified) Symbol Description LD78DM18 Unit Test Conditions 1.85 V 1.8 1.868 V VIN=3.8V,IO=0.25A 2.8V≤VIN≤12V, 5mA ≤IO ≤0.5A 0°C≤Ti≤125°C Min. Typ. Max. 1.75 1.8 1.732 VO Output Voltage ∆VLINE Line Regulation - 5 20 mV 2.8V≤VIN≤12V,IO=0.25A ∆VLOAD Load Regulation - 5 20 mV VIN=3.8V ,5mA ≤IO ≤0.5A - 0.3 0.5 - 0.5 - VD Dropout Voltage IO=0.25A V IO=0.5A Rev. B/LX www.taitroncomponents.com Page 4 of 13 0.5A Ultra Low Dropout Voltage Regulator LD78DM15 - LD78DM50 - 0.8 Quiescent Current IQ ISQ PSRR mA - 10 20 - 0.7 5 - 10 30 - 75 - µV 53 65 - dB Starting Quiescent Current Output Noise Voltage eN Power Supply Ripple Rejection Ratio 2.8V≤VIN≤12V,IO=0A 1.8 mA 2.8V≤VIN≤12V,IO=0.5A VIN=2.1V, IO=0A VIN=2.5V, IO=0.5A 10Hz≤f≤100KHz VIN=3.8V,IO=50mA 2.8V≤VIN≤12V, IO=50mA , f=120Hz Electrical Characteristics (TJ=25° C, VIN=4V,Unless Otherwise Specified) Symbol Description LD78DM20 Unit Test Conditions 2.05 V 2.0 2.07 V VIN=4V,IO=0.25A 3V≤VIN≤12V, 5mA ≤IO ≤0.5A 0°C≤Ti≤125°C Min. Typ. Max. 1.95 2.0 1.93 VO Output Voltage ∆VLINE Line Regulation - 5 20 mV 3V≤VIN≤12V,IO=0.25A ∆VLOAD Load Regulation - 5 20 mV VIN=4V ,5mA ≤IO ≤0.5A - 0.3 0.5 - 0.5 - - 0.8 1.8 VD IQ ISQ eN PSRR Dropout Voltage V Quiescent Current Power Supply Ripple Rejection Ratio IO=0.5A 3V≤VIN≤12V,IO=0A mA - 10 20 - 0.7 5 - 10 30 - 80 - µV 53 65 - dB Starting Quiescent Current Output Noise Voltage IO=0.25A mA 3V≤VIN≤12V,IO=0.5A VIN=2.1V, IO=0A VIN=2.5V, IO=0.5A 10Hz≤f≤100KHz VIN=4V,IO=50mA 2.8V≤VIN≤12V, IO=50mA , f=120Hz Rev. B/LX www.taitroncomponents.com Page 5 of 13 0.5A Ultra Low Dropout Voltage Regulator LD78DM15 - LD78DM50 Electrical Characteristics (TJ=25° C, VIN=4.5 V, Unless Otherwise Specified) Symbol Description LD78DM25 Unit Typ. Max. 2.438 2.5 2.562 V 2.412 2.5 2.588 V 3.5V≤VIN≤12V, 5mA ≤IO≤0.5A 0°C≤Ti≤125°C Output Voltage VO Test Conditions Min. VIN =4.5V, IO =0.25A ∆VLINE Line Regulation - 5 20 mV 3.5V≤VIN≤12V, IO=0.25A ∆VLOAD Load Regulation - 5 20 mV VIN =4.5V ,5mA ≤IO≤0.5A - 0.3 0.5 Dropout Voltage VD V - 0.5 - - 0.8 1.8 - 10 20 - 0.9 5 - 12 30 - 95 - µV 53 64 - dB Quiescent Current IQ ISQ PSRR Power Supply Ripple Rejection Ratio IO =0.5A 3.5V≤VIN≤12V, IO=0A mA Starting Quiescent Current Output Noise Voltage eN IO =0.25A mA 3.5V≤VIN≤12V, IO=0.5A VIN =2.1V, IO=0A VIN =2.7V, IO=0.5A 10Hz≤f≤100KHz VIN =4.5V, IO =50mA 3.5V≤VIN≤12V, IO =50mA , f=120Hz Electrical Characteristics(TJ=25° C, VIN=4.5 V, Unless Otherwise Specified) Symbol Description LD78DM30 Unit Test Conditions 3.075 V 3.0 3.105 V VIN=5V,IO=0.25A 4V≤VIN≤12V, 5mA ≤IO ≤0.5A 0°C≤Ti≤125°C Min. Typ. Max. 2.925 3.0 2.895 VO Output Voltage ∆VLINE Line Regulation - 5 20 mV 4V≤VIN≤12V,IO=0.25A ∆VLOAD Load Regulation - 5 20 mV VIN=5V,5mA ≤IO ≤0.5A - 0.3 0.5 VD Dropout Voltage V IO=0.25A IO=0.5A - 0.5 - Rev. B/LX www.taitroncomponents.com Page 6 of 13 0.5A Ultra Low Dropout Voltage Regulator LD78DM15 - LD78DM50 - 0.8 Quiescent Current IQ ISQ PSRR mA - 10 20 - 1.1 5 - 13 30 - 110 - µV 50 63 - dB Starting Quiescent Current Output Noise Voltage eN Power Supply Ripple Rejection Ratio 4V≤VIN≤12V,IO=0A 1.8 mA 4V≤VIN≤12V,IO=0.5A VIN=2.1V, IO=0A VIN=2.8V, IO=0.5A 10Hz≤f≤100KHz VIN=5V,IO=50mA 4V≤VIN≤12V, IO=50mA , f=120Hz Electrical Characteristics (TJ=25° C, VIN=4.5 V, Unless Otherwise Specified) Symbol Description LD78DM33 Unit Test Conditions 3.382 V 3.0 3.416 V VIN=5.3V,IO=0.25A 4.3V≤VIN≤12V, 5mA ≤IO ≤0.5A 0°C≤Ti≤125°C Min. Typ. Max. 3.218 3.3 3.184 VO Output Voltage ∆VLINE Line Regulation - 5 20 mV 4.3V≤VIN≤12V,IO=0.25A ∆VLOAD Load Regulation - 5 20 mV VIN=5.3V,5mA ≤IO ≤0.5A - 0.3 0.5 - 0.5 - - 0.8 1.8 VD IQ ISQ eN PSRR Dropout Voltage V Quiescent Current Power Supply Ripple Rejection Ratio IO=0.5A 4.3V≤VIN≤12V,IO=0A mA - 10 20 - 1.1 5 - 13 30 - 115 - µV 48 61 - dB Starting Quiescent Current Output Noise Voltage IO=0.25A mA 4.3V≤VIN≤12V,IO=0.5A VIN=2.1V, IO=0A VIN=2.9V, IO=0.5A 10Hz≤f≤100KHz VIN=5.3V,IO=50mA 4.3V≤VIN≤12V, IO=50mA , f=120Hz Rev. B/LX www.taitroncomponents.com Page 7 of 13 0.5A Ultra Low Dropout Voltage Regulator LD78DM15 - LD78DM50 Electrical Characteristics (TJ=25° C, VIN=7V, Unless Otherwise Specified) Symbol Description LD78DM50 Unit Test Conditions 5.12 V 5.0 5.17 V VIN=7V,IO=0.25A 6V≤VIN≤12V, 5mA ≤IO ≤0.5A 0°C≤Ti≤125°C Min. Typ. Max. 4.88 5.0 4.83 VO Output Voltage ∆VLINE Line Regulation - 5 20 mV 6V≤VIN≤12V,IO=0.25A ∆VLOAD Load Regulation - 5 20 mV VIN=7V,5mA ≤IO ≤0.5A - 0.3 0.5 - 0.5 - - 0.8 1.8 VD IQ ISQ eN PSRR Dropout Voltage V Quiescent Current Power Supply Ripple Rejection Ratio IO=0.5A 6V≤VIN≤12V,IO=0A mA - 10 20 - 1.3 5 - 14 30 - 150 - µV 48 60 - dB Starting Quiescent Current Output Noise Voltage IO=0.25A mA 6V≤VIN≤12V,IO=0.5A VIN=2.1V, IO=0A VIN=3.0V, IO=0.5A 10Hz≤f≤100KHz VIN=7V,IO=50mA 6V≤VIN≤12V, IO=50mA , f=120Hz Rev. B/LX www.taitroncomponents.com Page 8 of 13 0.5A Ultra Low Dropout Voltage Regulator LD78DM15 - LD78DM50 Typical Standard Application Circuit Standard Test Circuit Ripple Rejection Test Circuit Rev. B/LX www.taitroncomponents.com Page 9 of 13 0.5A Ultra Low Dropout Voltage Regulator POWER DISSIPATION PD（W） Fig.1 PD-Ta (Outline:DPAK) POWER DISSIPATION PD（W） LD78DM15 - LD78DM50 AMBIENT TEMPERATURE TA (° C) AMBIENT TEMPERATURE TA (° C) Fig.3 PD-Ta (Outline:SOT-223) Fig.4 VO-Tj LD78DM33 VIN=5.3V IO=5mA OUTPUT VOLTAGE VO(V ) POWER DISSIPATION PD（W） Fig.2 PD-Ta (Outline:TO-220F) JUNCTION TEMPERATURE T j (° C) AMBIENT TEMPERATURE TA (° C) Fig.6 IQ-VIN LD78DM-33 TJ=25°C INPUT VOLTAGE VIN(V) QUIESCENT CURRENT IQ(mA ) OUTPUT VOLTAGE VO(V ) Fig.5 VO-VIN LD78DM33 TJ=25°C INPUT VOLTAGE VIN(V) Rev. B/LX www.taitroncomponents.com Page 10 of 13 0.5A Ultra Low Dropout Voltage Regulator LD78DM15 - LD78DM50 LD78DM33 VIN=5.3V LD78DM33 VIN=5.3V TJ=25°C JUNCTION TEMPERATURE TJ (° C) OUTPUT CURRENT IO (A) Fig.7 VO-IO Fig.8 VD-TJ LD78DM33 VIN=5.3V TJ=25°C OUTPUT CURRENT IO (A) Fig.11 PSRR- f POWER SUPPLY RIPPLE REJECTION RATIO PSRR(dB) QUIESCENT CURRENT IQ(mA ) Fig.8 IQ-IO DROPOUT VOLTAGE VD( V ) OUTPUT VOLTAGE Vo( V ) QUIESCENT CURRENT IQ(mA ) Fig.7 IQ-TJ LD78DM33 JUNCTION TEMPERATURE TJ (° C) LD78DM33 VIN=5.3V Io=50mA TJ=25°C INPUT RIPPLE FREQUENCY f (KHz) Rev. B/LX www.taitroncomponents.com Page 11 of 13 0.5A Ultra Low Dropout Voltage Regulator LD78DM15 - LD78DM50 Dimensions in mm (inch) DPAK (TO-252 ) TO-220F SOT-223 Rev. B/LX www.taitroncomponents.com Page 12 of 13 0.5A Ultra Low Dropout Voltage Regulator LD78DM15 - LD78DM50 How to contact us: 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: [email protected] 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 REPRESENTAÇÕES DO BRASIL LTDA RUA DOMINGOS DE MORAIS, 2777, 2.ANDAR, SALA 24 SAÚDE - SÃO PAULO-SP 04035-001 BRAZIL Tel: +55-11-5574-7949 Fax: +55-11-5572-0052 TAITRON COMPONETS INCORPORATED, SHANGHAI REPRESENTATIVE OFFICE METROBANK PLAZA, 1160 WEST YAN’ AN ROAD, SUITE 1503, SHANGHAI, 200052, CHINA Tel: +86-21-5424-9942 Fax: +86-21-5424-9931 Rev. B/LX www.taitroncomponents.com Page 13 of 13