●SI-8000E Series SI-8000E Series Full-Mold, Separate Excitation Switching Type ■Features • • • • • • Compact full-mold package (equivalent to TO220) High efficiency: 80 to 88% Requires only 4 external components Phase correction and output voltage adjustment performed internally Built-in reference oscillator (60kHz) Built-in overcurrent and thermal protection circuits ■Applications • Power supplies for telecommunication equipment • Onboard local power supplies ■Lineup Part Number SI-8050E SI-8090E SI-8120E VO(V) 5.0 9.0 12.0 IO(A) 0.6 ■Absolute Maximum Ratings Parameter Symbol Ratings Unit VIN 43 V PD1 14(With infinite heatsink) W PD2 1.5(Without heatsink, stand-alone operation) W Tj +125 °C Storage Temperature Tstg –40 to +125 °C SW Terminal Applied Reverse Voltage VSW –1 V Thermal Resistance(junction to case) Rth(j-c) 7.0 °C/W Thermal Resistance(junction to ambient air) Rth(j-a) 66.7 °C/W DC Input Voltage Power Dissipation Junction Temperature ■Recommended Operating Conditions Parameter Ratings Symbol Unit SI-8050E SI-8090E SI-8120E 7 to 40 11 to 40 14 to 40 DC Input Voltage Range VIN Output Current Range IO 0 to 0.6 A Operating Junction Temperature Range Tjop –30 to +125 °C Operating Temperature Range Top –30 to +125 °C 76 V ●SI-8000E Series ■Electrical Characteristics (Ta=25°C) Ratings Parameter Symbol SI-8050E VO Output Voltage min. typ. max. min. typ. max. 4.80 5.00 5.20 8.64 9.00 9.36 11.52 12.00 12.48 VIN=20V, IO=0.3A η 86 88 VIN=21V, IO=0.3A VIN=24V, IO=0.3A 60 60 60 VIN=21V, IO=0.3A VIN=24V, IO=0.3A 80 90 100 VIN=10 to 30V, IO=0.3A ∆VOLOAD Load Regulation 30 Conditions Temperature Coefficient of Output Voltage 120 VIN=14 to 30V, IO=0.3A 40 50 kHZ 130 80 70 95 VIN=21V, IO=0.1 to 0.4A VIN=24V, IO=0.1 to 0.4A ∆VO/∆Ta ±0.5 ±1.0 ±1.5 RREJ 45 45 45 f=100 to 120HZ f=100 to 120HZ f=100 to 120HZ Conditions Overcurrent Protection IS1 0.61 Conditions Starting Current 0.61 VIN=10V mV VIN=17 to 30V, IO=0.3A VIN=20V, IO=0.1 to 0.4A Ripple Rejection 0.61 VIN=14V ■Outline Drawing mV mV/°C dB A VIN=17V (unit: mm) φ 3.2±0.2 ±0.2 0.5 4.2 ±0.2 2.8 Part Number Lot Number (2.0) ±0.15 (8.0) +0.2 0.85 –0.1 (4.6) 0.95 +0.2 0.45 –0.1 P1.7±0.7×4=6.8±0.7 3.9±0.7 5.0±0.6 2.6±0.1 (17.9) 16.9±0.3 4.0±0.2 7.9±0.2 10.0±0.2 % VIN=20V, IO=0.3A 100 V VIN=24V, IO=0.3A 80 ∆VOLINE Conditions VIN=21V, IO=0.3A VIN=20V, IO=0.3A f Conditions Line Regulation Unit max. Conditions Switching Frequency SI-8120E typ. Conditions Efficiency SI-8090E min. (4.3) 8.2±0.7 Plastic Mold Package Type Flammability: UL94V-0 Weight: Approx. 2.3g q w e r t VIN SWOUT GND VOS N.C 1 2 3 4 5 Forming No. 1101 77 ●SI-8000E Series ■Block Diagram VIN ■Standard External Circuit 1 5V : 200µH 9V,12V: 300µH 2 SWOUT OCP VIN 1 Reg. OSC 2 VIN TSD Reset Drive + SI-8000E C1 100µF Comp. 4 VOS Amp. 3 NC VO + C2 330µF 4 5 GND 3 GND D1 AK06 (Sanken) VOS GND VREF L1 SWOUT GND 5 N.C ■Ta-PD Characteristics PD=VO•IO Infinite heatsink 0× 20 10 2m 0× 10 C/ 2m m W ) /W .2° 5× ) (7. 6° C /W Without heatsink 25 °C (5 .3 m (2 5 m 0× 2m 75 ×7 0 VO VIN The efficiency depends on the input voltage and the output current. Thus, obtain the value from the efficiency graph on page 79 and substitute the percentage in the formula above. 0× 10 0 –30 –VF•IO 1– With Silicon Grease Heatsink: Aluminum 20 Power Dissipation PD (W) 15 100 –1 ηχ ) 50 75 100 125 Ambient Operating Temperature Ta (°C) VO : Output voltage VIN : Input voltage IO : Output current ηx : Efficiency (%) VF : Diode forward voltage 0.4V(AK06) Thermal design for D1 must be considered separately. ■Selecting External Components 1. Inductor L1 1) It must be suited for switching regulators. Do not use inductors as noise filters as they generate excessive heat. 2) It must have the appropriate inductance value. If the inductance is too small (150µH or lower), abnormal oscillation may occur causing operation problems in the overcurrent protection circuit within the rated current range. 3) The rated current must be satisfied. If the rated current is exceeded, magnetic saturation leads to overcurrent. 2. Capacitors C1 and C2 1) They must satisfy the withstand voltage and allowable ripple current. Exceeding the ratings of these capacitors or using them without derating shortens their service lives and may also cause abnormal oscillation of the IC. 2) C2 must be a low-impedance type capacitor. A low-impedance type capacitor is recommended for C2 to ensure minimum ripple voltage and stable switching operation. 3. Diode D1 The Sanken AK06 diode is recommended for D1. If you intended to use an equivalent diode, be sure to use a Schottky Barrier diode and make sure that the reverse voltage applied to terminal 2 of the IC does not exceed the value (–1V) given in the absolute maximum ratings. If you use a fast recovery diode or any other diode, application of a reverse voltage generated from the recovery or ON voltage of the diode may damage the IC. Application Variable output voltage Output voltage can be adjusted in the same way as SI-8000S in page 85. 78 ●SI-8000E Series ■Typical Characteristics Efficiency Characteristics(SI-8050E) Rise Characteristics(SI-8050E) (Ta=25°C) 5 N= VI 0V 1 0V 2 V 30 V 40 70 60 50 0.1A 4 0.3A 3 2 5.1 VIN=40V 5.0 20V 10V 7V 4.9 1 40 0.2 0.3 0.4 0.5 0 0.6 0 Overcurrent Protection Characteristics(SI-8050E) V Frequency f (kHz) VIN 40 =7 V 20V 3 2 1 0 0 0.5 1.0 1.5 Output Current IO (V) 6 8 4.8 0 10 2.0 90 80 5.2 5 f 5.0 4.9 50 4.8 40 4.7 0 0 0 50 0.3 0.4 0.5 0.6 100 Ambient Temperature Ta (°C) VIN=20V, IO=20mA 6 5.1 VO 60 0.2 Thermal Protection Characteristics(SI-8050E) 5.3 η 70 0.1 Output Current IO (V) (VIN=20V, IO=0.3A) 100 Efficiency η (%) 5 4 4 Temperature Characteristics(SI-8050E) (Ta=25°C) 6 2 Input Voltage VIN (V) Output Current IO (A) 0 150 Output Voltage VO (V) 0.1 Output Voltage VO (V) 0 0 Output Voltage VO (V) (Ta=25°C) 5.2 Output Voltage VO (V) 80 0A 7V IO= Output Voltage VO (V) Efficiency η (%) 90 Load Regulation(SI-8050E) (Ta=25°C) 6 0.6 A 100 4 3 2 1 0 0 50 100 150 200 Case Temperature TC (°C) Note on Thermal Protection: The thermal protection circuit is intended for protection against heat during instantaneous shortcircuiting. Its operation is not guaranteed for shortcircuiting over extended periods of time. 79