STR2000 Series Switching Type Chopper • Self Oscillation Type Features ● ● ● ● ● Requires only 3 external components Small size and high efficiency Low switching noise Variable output voltage Use of SANKEN's semiconductor elements ensures high reliability Applications ● For power supplies in office equipment such as electronic typewriters, printers, and copiers ● For power supplies in VCRs and personal CB radios (fixed station) External View ■ Absolute Maximum Ratings (Ta=25°C) Parameter Ratings Symbol Unit STR2005 STR2012 STR2013 STR2015 STR2024 DC Input Voltage VIN 45 DC Output Current IO 2.0 (pulse 3.0) Power Dissipation 50 V A 75 (TC=25°C) PD W 15 (TC=100°C) Operating Temperature Top –20 to +100 °C Storage Temperature Tstg –20 to +125 °C Rth(j-c) 1.25 °C/W Thermal Resistance ( junction-to-case) ■ Electrical Characteristics (Ta=25°C) Ratings Parameter Symbol STR2005 min DC Input Voltage Range VIN STR2012 typ max min typ 11 40 18 max min 45 Condition Output Voltage VO η 5.0 5.1 72 ∆VOLINE ∆VOLOAD RREJ f 45 45 45 85 VIN=24V, IO=1.0A 60 21 Unit typ max 30 50 100 VIN=35V, IO=1.0A 85 85 VIN=27V, IO=1.0A VIN=35V, IO=1.0A 60 60 V 45 V % mV VIN=23 to 31V, IO=1.0A VIN=30 to 40V, IO=1.0A 100 VIN=24V, IO=0.5 to 1.5A 45 VIN=27V, IO=1.0A 60 VIN=20 to 28V, IO=1.0A 100 Condition Switching Frequency typ max min VIN=24V, IO=1.0A 50 Condition VIN=20V, IO=0.5 to 1.5A Ripple Rejection typ max min 19 85 Condition VIN=15 to 25V, IO=1.0A Load Regulation STR2024 5.2 11.8 12.0 12.2 12.8 13.0 13.2 14.8 15.0 15.2 23.7 24.0 24.3 Condition VIN=20V, IO=1.0A Line Regulation STR2015 IO=1.0A Condition VIN=20V, IO=1.0A Efficiency STR2013 100 100 mV VIN=27V, IO=0.5 to 1.5A VIN=35V, IO=0.5 to 1.5A 45 45 25 25 dB f=100 to 120Hz 25 Condition V IN=20V, I O=1.0A 25 25 V IN =24V, I O=1.0A kHz VIN=27V, IO=1.0A VIN=35V, IO =1.0A 9 STR2000 Series ■ Outline Drawing/Terminal Connections (unit:mm) 2.0±0.2 21.2±0.3 4.7max. Type 2.0 +0.2 Terminal Connections q w e r t 3.0 20.0min. 12.0±0.3 Lot Number Plastic Mold Package Type Flammability: UL94V-0 φ 3.2±0.1 6.0max. 24.4±0.2 3 0° 36.0±0.3 +0.2 0.6 –0.1 1.0 –0.1 q 3.5 w e r t 5.45×4 5.45 Switching Output (backside of case) Output Voltage Adjustment Ground Output Voltage Detection Input Weight: Approx. 14.5g ■ Ta-PD Characteristics ■ Block Diagram Tr1 5 Without Mica 150×150×2(3.3°C/W) With Silicone Grease Heatsink: Aluminum Unit: mm 24 1 R1 Power Dissipation PD(W) Ref. Voltage Circuit D1 R2 R3 M1 4 Tr2 R5 R4 R7 R6 2 C1 20 16 100×100×2(5.2°C/W) 12 75×75×2(7.6°C/W) 8 R8 C2 Without heatsink 4 3 0 –20 L Vout 1 5 4 DC Input 100 ■ Variable Output Voltage Circuit ■ Standard External Circuit VIN 60 80 20 40 Ambient Temperature Ta(°C) 0 3 DC Output + L VIN + 1000µF 1000µF – 4 DC Input VOUT 1 5 3 2 DC Output VR1 + GND GND – + 1000 µF 1000 µF VR2 GND Type STR2005 STR2012 STR2013 STR2015 STR2024 10 Inductance L 200µH 300µH 300µH 350µH 400µH GND VR1 : VOUT down VR2 : VOUT up STR2000 Series Typical Characteristics (Ta=25°C) ■ STR2005 Rise Characteristics Efficiency Characteristics 10 100 90 VIN=11V 20V 80 6 Efficiency η (%) Output Voltage VO (V) 8 IO=0A 1A, 2A 4 70 60 30V 40V 50 40 2 30 0 0 2 4 6 8 10 12 14 16 18 0 20 0 0.5 Input Voltage VIN (V) 1.0 1.5 2.0 2.5 Output Current IO (A) ■ STR2012 Rise Characteristics Efficiency Characteristics 20 100 IO=0A, 1A 2A Efficiency η (%) Output Voltage VO (V) 90 15 10 80 VIN=18V 24V 30V 35V 45V 40V 70 60 50 5 40 0 0 5 10 15 20 25 30 35 40 0 45 0 Input Voltage VIN (V) 0.5 1.0 1.5 2.0 2.5 Output Current IO (A) ■ STR2024 Rise Characteristics Efficiency Characteristics 30 100 IO=0A, 1A 2A 90 Efficiency η (%) Output Voltage VO (V) 25 20 15 10 80 VIN=30V 35V 40V 45V 50V 70 60 50 5 0 40 0 5 10 15 20 25 30 Input Voltage VIN (V) 35 40 45 0 0 0.5 1.0 1.5 2.0 2.5 Output Current IO (A) 11