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| qSTR9000 Series STR9000 Series 5-Terminal, Low Dropout Voltage Dropper Type sFeatures * * * * * * 5-terminal regulator with two screw mount package Output current: 4.0A Low dropout voltage :VDIF1V (at IO=4A) Fine adjustment of output voltage Output ON/OFF control Built-in foldback overcurrent protection circuits sApplications * For stabilization of the secondary stage of switching power supplies * Electronic equipment sAbsolute Maximum Ratings Parameter DC Input Voltage DC Output Current Power Dissipation Junction Temperature Ambient Operating Temperature Storage Temperature Thermal Resistance (junction to case) Symbol VIN IO PD1 PD2 Tj Top Tstg Rth(j-c) Ratings STR9005 25 4.0 75(TC=25C) 3.2(Without heatsink, stand-alone operation) -30 to +125 -20 to +100 -30 to +125 1.25 STR9012/9015 30 Unit V V W W C C C C/W (Ta=25C) sElectrical Characteristics Ratings Parameter Input Voltage Output Voltage Symbol min. VIN VO Conditions VDIF Dropout Voltage Conditions 1.0 Conditions Line Regulation Load Regulation Temperature Coefficient of Output Voltage Ripple Rejection Overcurrent Protection Starting Current Output ON/OFF Control Voltage (Voltage between terminal No.3 and 5) Voltage with Output Off VOLINE Conditions VOLOAD Conditions VO/Ta RREJ Conditions IS1 Conditions VO(ON) VO(OFF) VO Conditions VIN=8V, IO=0A 2.0 0.5 VIN=15V, IO=0A 4.1 VIN=8V 0.6 2.0 0.5 VIN=20V, IO=0A 4.1 VIN=16V 0.6 2.0 0.5 10 40 0.5 54 30 100 VIN=6 to 15V, IO=2.0A VIN=8V, IO=0 to 3.0A IO=4.0A 30 80 1.5 54 f=100 to 120HZ 4.1 VIN=20V 0.6 80 200 50 100 1.5 54 100 200 6 4.9 5.0 VIN=8V, IO=2.0A 0.5 IO=2.0A 1.0 1.0 STR9005 typ. max. 15 5.1 min. 13 11.8 12.0 VIN=16V, IO=2.0A 0.5 STR9012 typ. max. 25 12.2 min. 16 14.8 15.0 VIN=20V, IO=2.0A 0.5 STR9015 typ. max. 25 15.2 (Ta=25C) Unit V V V mV mV mV/C dB A V V V VIN=13 to 25V, IO=2.0A VIN=16V, IO=0 to 3.0A VIN=16 to 25V, IO=2.0A VIN=20V, IO=0 to 3.0A *Output is turned on when voltage between terminal No.3 and 5 is less than 0.6V, and turned off if more than 2.0V. 66 qSTR9000 Series sOutline Drawing 0.3 0.2 (unit:mm) 36.0 24.4 6.0max. 2.0 0.2 30 0.3 12.0 Part Number 21.2 Lot Number 0.3 3.2 0.1 Plastic Mold Package Type Flammability: UL94V-0 Weight: Approx. 14.5g 3.0 0.6 -0.1 +0.2 4.7max. 20.0min. 2.0 1.0 -0.1 +0.2 Terminal Connections q w e r t Output (backside of case) Output Fine Adjustment Output ON/OFF Control Input Ground q 3.5 w e 5.45x4 5.45 r t sBlock Diagram 4 Tr1 1 R2 M R4 R1 2 Drive Amp. Reg. R6 Protection VREF Tr2 R7 R5 R3 R8 3 5 67 qSTR9000 Series sStandard External Circuit C1: Oscillation prevention capacitor (approx. 0.33F) Connection to terminal No.4 must be made as short as possible. C2: Output capacitor (47 to 100F) Connection to terminal No.1 must be made as short as possible. D1: Protection diode (RM1Z) Required for protection against reverse biasing of input and output. Note 1: Prevention of oscillation at low temperatures At low temperatures, oscillation may occur unless an output capacitor with good tan is used. Be sure to connect a tantalum capacitor (approx. 10F) in parallel with output capacitor C2. Note 2: An isolation type diode is provided from input to ground and also from output to ground. These may be destroyed if the device is reverse biased. In this case, use a diode with low VF to protect them. D1 VIN 4 DC input 3 C1 STR9000 5 2 + C2 1 VO DC output sTa-PD Characteristics 24 150x150x2(3.3C/W) Power Dissipation PD (W) 20 16 100x100x2(5.2C/W) 12 75x75x2(7.6C/W) 8 4 0 -20 Without heatsink Without Mica With Slicon Grease Heatsink: Aluminum Unit: mm 0 25 50 75 100 Ambient Temperature Ta (C) 68 qSTR9000 Series External Variable Output Voltage Circuit 1. Variable output voltage with a single external resistor The output voltage of the STR9000 series may be decreased by inserting a resistor between terminals No.1 (output terminal) and No.2 (output fine adjustment terminals). Alternatively, the output voltage may be increased by inserting a resistor between terminals No.2 and No.5 (ground terminal). VIN VO 4 STR9000 + 3 5 2 1 REX for Vo down + REX for Vo up Output Voltage VO (V) 14 5.3 5.2 5.1 5.0 4.9 4.8 q Typical Characteristics of Variable Output Voltage STR9005 (Ta=25C) Output Voltage VO (V) Variable Output Voltage Range 4.7 20K 50K 100K 500K 1M 5M 10M 50M External Resistor REX () STR9012 (Ta=25C) 13 Variable Output Voltage Range GND Select either one of the external resistor. GND 12 11 2. Fine adjustment of output voltage The output voltage may be finely adjusted by using terminals No.1, No.2 and No. 5 as shown in the following connections. 10 9 20K 50K 100K 500K 1M 5M 10M 50M External Resistor REX () STR9015 VIN VO 4 STR9000 + 3 5 2 VR R2 1 Output Voltage VO (V) 17 (Ta=25C) R1 + 16 15 Variable Output Voltage Range 14 GND GND 13 Note: The fine adjustment range of output voltage for the STR9000 series is 0.5V max for STR9012 and +1.0V/-2.0V max for STR9015. Adjustment exceeding these values may cause start-up errors. 12 20K 50K 100K 500K 1M 5M 10M 50M External Resistor REX () : Insertion of resistor between terminals No. 2 and No. 5 : Insertion of resistor between terminals No. 2 and No. 1 w Typical Characteristics of Fine Output Voltage Adjustment STR9005 (Ta=25C) STR9012 14 (Ta=25C) STR9015 20 (Ta=25C) 5.4 R1=150 k R2=150 k R1=100 k R2= 30 k 13 18 R1=100 k R2= 20 k Output Voltage VO (V) Output Voltage VO (V) Output Voltage VO (V) 0 100 200 300 400 500 5.2 16 5.0 12 14 4.8 11 12 4.6 0 100 200 300 400 500 10 10 0 100 200 300 400 500 VR (k) VR (k) VR (k) 69 qSTR9000 Series sTypical Characteristics (Ta=25C) IO vs. VDIF Characteristics 1.0 Temperature Coefficient of Output Voltage(STR9005) 5.04 VIN=8V lO=10mA Circuit Current(STR9005) 70 VO=5V 60 Dropout Voltage VDIF (V) Ground Current lG (mA) 0.8 5.02 Output Voltage VO (V) 50 40 30 20 10 lO=4A 3A 2A 1A 0A 0.6 5.00 0.4 4.98 0.2 4.96 0 0 1.0 3.0 3.0 4.0 4.94 -20 0 20 40 60 80 100 120 140 0 0 5 10 15 17.5 Output Current lO (A) Ambient Temperature Ta (C) Input Voltage VIN (V) Rise Characteristics(STR9005) 7 6 Rise Characteristics(STR9012) 15 Rise Characteristics(STR9015) 17.5 15 Output Voltage VO (V) Output Voltage VO (V) Output Voltage Vo (V) 5 4 lO=0A 3 2 1 0 1A 2A 3A 4A 10 lO=0A 1A 2A 3A 4A lO=0A 1A 10 2A 3A 4A 5 5 0 5 10 15 20 0 0 5 10 15 20 22.5 0 0 5 10 15 20 22.5 Input Voltage VIN (V) Input Voltage VIN (V) Input Voltage VIN (V) Overcurrent Protection Characteristics(STR9005) 7 6 Overcurrent Protection Characteristics(STR9012) 15 Overcurrent Protection Characteristics(STR9015) 17.5 15 25V 20V =16 VIN Output Voltage VO (V) Output Voltage VO (V) 5 Output Voltage VO (V) 20V VIN 25V 16V 15V V =13 V VIN =6V 10 8V 4 3 2 1 0 10 5 5 0 1 2 3 4 5 6 7 8 0 0 1 2 3 4 5 6 7 8 9 0 0 1 2 3 4 5 6 7 8 9 Output Current lO (A) Output Current lO (A) Output Current lO (A) 70 |
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