UNISONIC TECHNOLOGIES CO., LTD 278RXX LINEAR INTEGRATED CIRCUIT 4 TERMINAL 2A OUTPUT LOW DROP VOLTAGE REGULATOR DESCRIPTION 1 The UTC 278RXX Series are Low Drop Voltage Regulator suitable for various electronic equipments. It provides constant voltage power source with TO-220F-4 terminal lead full molded PKG. The Regulator has multi function such as over current protection, overheat protection and ON/OFF control. TO-220F-4 FEATURES * 2.0A Output Low Drop Voltage Regulator. * Built in ON/OFF Control Terminal. * Built in Over Current Protection, Over Heat Protection Function. ORDERING INFORMATION Note: Ordering Number Lead Free Halogen Free 278RXXL-TF4-T 278RXXG-TF4-T xx: Output Voltage, refer to Marking Information. 278RXXL-TF4-T Package Packing TO-220F-4 Tube (1)Packing Type (1) T: Tube (2)Package Type (2) TF4: TO-220F-4 (3)Green Package (3) L: Lead Free, G: Halogen Free and Lead Free (4)Voltage Code (4) XX: Refer to Marking Information www.unisonic.com.tw Copyright © 2015 Unisonic Technologies Co., Ltd 1 of 8 QW-R102-048.D 278RXX LINEAR INTEGRATED CIRCUIT MARKING INFORMATION PACKAGE VOLTAGE CODE TO-220F-4 05: 5.0V 08: 8.0V 12: 12V 33: 3.3V PIN CONFIGURATION PIN DESCRIPTION PIN NO. 1 2 3 4 PIN NAME VIN VOUT GND Control MARKING DESCRIPTION Input DC supply voltage Output voltage pin Ground pin for the IC ON/OFF control pin UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 2 of 8 QW-R102-048.D 278RXX LINEAR INTEGRATED CIRCUIT BLOCK DIAGRAM VIN 1 2 VO BANDGAP REFERENCE Control 4 ASO PROTECTION OUTPUT ON/OFF CONTROL OVER HEAT PROTECTION 3 GND UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 3 of 8 QW-R102-048.D 278RXX LINEAR INTEGRATED CIRCUIT ABSOLUTE MAXIMUM RATING (TA=25°C, unless otherwise specified) PARAMETER SYMBOL REMARK RATINGS UNIT Input Voltage VIN 35 V ON/OFF Control Voltage VC 35 V Output Current IO 2 A Power Dissipation 1 PD1 No heatsink 1.5 W Power Dissipation 2 PD2 with heatsink 15 W Junction Temperature TJ 125 °C Operating Temperature TOPR -20~80 °C Storage Temperature TSTG -30~125 °C Soldering Temperature (10sec) TSOL 260 °C Note: Absolute maximum ratings are those values beyond which the device could be permanently damaged. Absolute maximum ratings are stress ratings only and functional device operation is not implied. ELECTRICAL CHARACTERISTICS (TA=25°C, IO=1.0A, unless otherwise specified) For 278R05 (VIN=7V) PARAMETER Output Voltage Load Regulation Line Regulation Temperature Coefficient of Output Voltage Ripple Rejection Drop Out Voltage (Note) Output ON State for Control Voltage Output ON State for Control Current Output OFF State for Control Voltage Output OFF State for Control Current Quiescent Current SYMBOL VO Reg Load Reg Line TC VO R·R VD VC(ON) IC(ON) VC(OFF) IC(OFF) IQ For 278R08 (VIN=10V) PARAMETER Output Voltage Load Regulation Line Regulation Temperature Coefficient of Output Voltage Ripple Rejection Drop Out Voltage (Note) Output ON State for Control Voltage Output ON State for Control Current Output OFF State for Control Voltage Output OFF State for Control Current Quiescent Current SYMBOL VO Reg Load Reg Line TC VO R·R VD VC(ON) IC(ON) VC(OFF) IC(OFF) IQ UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw TEST CONDITIONS MIN 4.875 IO=5mA~2A VIN=6~12V TJ=0~125°C 45 IO=2A TYP MAX 5.0 5.125 0.1 2.0 0.5 2.5 ±0.02 ±0.05 55 0.5 2.0 VC=2.7V 20 0.8 -0.4 10 VC=0.4V IO=0 TEST CONDITIONS MIN 7.800 IO=5mA~2A VIN=9~15V TJ=0~125°C 45 IO=2A TYP MAX 8.0 8.200 0.1 2.0 0.5 2.5 ±0.02 ±0.05 55 0.5 2.0 VC=2.7V VC=0.4V IO=0 20 0.8 -0.4 10 UNIT V % % %/°C dB V V μA V mA mA UNIT V % % %/°C dB V V μA V mA mA 4 of 8 QW-R102-048.D 278RXX LINEAR INTEGRATED CIRCUIT ELECTRICAL CHARACTERISTICS (Cont.) For 278R12 (VIN=18V) PARAMETER Output Voltage Load Regulation Line Regulation Temperature Coefficient of Output Voltage Ripple Rejection Drop Out Voltage (Note) Output ON State for Control Voltage Output ON State for Control Current Output OFF State for Control Voltage Output OFF State for Control Current Quiescent Current SYMBOL VO Reg Load Reg Line TC VO R·R VD VC(ON) IC(ON) VC(OFF) IC(OFF) IQ TEST CONDITIONS MIN 11.70 IO=5mA~2A VIN=13~29V TJ=0~125°C 45 IO=2A TYP MAX 12.0 12.30 0.1 2.0 0.5 2.5 ±0.02 ±0.05 55 0.5 2.0 VC=2.7V VC=0.4V IO=0 20 0.8 -0.4 10 For 278R33 (VIN=5V) PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX Output Voltage VO 3.218 3.3 3.383 Load Regulation Reg Load IO=5mA~2A 0.1 2.0 Line Regulation Reg Line VIN=6~12V 0.5 2.5 ±0.02 ±0.05 Temperature Coefficient of Output Voltage TC VO TJ=0~125°C R·R Ripple Rejection 45 55 Drop Out Voltage (Note) VD IO=2A 0.5 Output ON State for Control Voltage VC(ON) 2.0 Output ON State for Control Current IC(ON) VC=2.7V 20 Output OFF State for Control Voltage VC(OFF) 0.8 Output OFF State for Control Current IC(OFF) VC=0.4V -0.4 Quiescent Current IQ IO=0 10 Note: Input voltage shall be the value when output voltage is 95% in comparison with the initial value. UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw UNIT V % % %/°C dB V V μA V mA mA UNIT V % % %/°C dB V V μA V mA mA 5 of 8 QW-R102-048.D 278RXX LINEAR INTEGRATED CIRCUIT TEST CIRCUIT UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 6 of 8 QW-R102-048.D 278RXX LINEAR INTEGRATED CIRCUIT TYPICAL APPLICATION CIRCUIT VIN 1 2 VO CO Specific IC L o a d 3 4 ON/OFF Signal High or Open:Output ON Low :Output OFF CMOS or TTL UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 7 of 8 QW-R102-048.D 278RXX TYPICAL CHARACTERISTICS Dynamic Load Response Dynamic Load Response CH1: 2V/div) CH2: 20mV VIN=5V, IO=5mA~3A, Ton=10ms, Toff=10ms CH1=VIN 0 CH2=VOUT CH3: 2.5A/div CH3: 2.5A/div CH1: 2V/div) CH2: 20mV VIN=5V, IO=5mA~2A, Ton=10ms, Toff=10ms CH3=IO 0 0 10 Time (2ms/div) 20 CH1=VIN 0 CH2=VOUT CH3=IO 0 0 Power Supply Rejection CH2=VOUT VIN=5V, △Vip=0.5V(rms), f=1KHz 0 5 Time (1ms/div) 10 CH1: 500mV/div 0 20 CH1=VIN 0 CH2: 10mV/div CH1: 500mV/div 0 10 Time (2ms/div) Power Supply Rejection CH1=VIN CH2: 10mV/div LINEAR INTEGRATED CIRCUIT 0 CH2=VOUT VIN=5V, △Vip=0.5V(rms), f=1KHz 0 5 Time (1ms/div) 10 UTC assumes no responsibility for equipment failures that result from using products at values that exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other parameters) listed in products specifications of any and all UTC products described or contained herein. UTC products are not designed for use in life support appliances, devices or systems where malfunction of these products can be reasonably expected to result in personal injury. Reproduction in whole or in part is prohibited without the prior written consent of the copyright owner. The information presented in this document does not form part of any quotation or contract, is believed to be accurate and reliable and may be changed without notice. UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 8 of 8 QW-R102-048.D