® M78SA Switching Regulator 0.5A, SMD Package FEATURES ►Industrial SMD Package ►Fully Regulated Output Voltage ►Low Ripple & Noise ►Excellent Efficiency up to 97% ►Operating Ambient Temp. Range -40°C to +90°C ►No Min. Load Requirement ►Over Temp. and Short Circuit Protection ►Remote ON/OFF Control, Output Voltage Trim ►Qualified for Lead-free Reflow Solder Process According to IPC/JEDEC J-STD-020D.1 ►Tape & Reel Package Available PRODUCT OVERVIEW The MINMAX M78SA series is a new range of switching regulators designed as a drop-in replacement for old LM78xx linear regulators with low efficiency.The very high efficiency of these step-down converters allow an operating temperature up to 80°C at full-load without need of any heatsink. The high efficiency and low stand-by power consumption of these switching regulators offer the designer a new, cost-efficient solution for many applications. Model Selection Guide Model Number Input Voltage Range(6) VDC M78SAR015-0.5 M78SAR018-0.5 M78SAR025-0.5 M78SAR033-0.5 M78SAR05-0.5 M78SAR065-0.5 M78SAR09-0.5 M78SAR12-0.5 M78SAR15-0.5 4.75 ~ 32 6.5 ~ 32 8 ~ 32 11 ~ 32 15 ~ 32 18 ~ 32 Output Voltage Output Current Normal Adjust Range(8) Max. VDC 1.5 1.8 2.5 3.3 5 6.5 9 12 15 VDC 1.4~2.5 1.5~3 1.5~3 3~5.5 3~8 3.3~11 4.5~12.6 4.5~13.5 4.5~15.5 mA 500 500 500 500 500 500 500 500 500 Max. capacitive Load μF 220 220 220 220 220 220 220 220 220 Efficiency (typ.) Efficiency (typ.) @Min. Vin @Max. Vin % 73 82 87 91 94 95 96 97 97 % 63 71 77 81 86 88 92 94 95 Input Specifications Parameter Conditions Input Surge Voltage (1 sec. max.) Min. Typ. Max. Unit -0.3 --- 34 VDC Internal Filter Type Capacitor Input Filter All Models Short Circuit Input Power Input Current @No Load Internal Capacitor --- --- 1.5 W --- 5 --- mA Typ. Max. Unit --- 35 μA Remote On/Off Control Parameter Conditions Converter On Converter Off GND or 0<Vr<1.6V Standby Input Current Supply Off & 24 Vin E-mail:[email protected] 2015/07/31 REV:7 Min. Open or 2.4V<Vr<5V Tel:886-6-2923150 Page 1 of 6 --- ® M78SA Switching Regulator 0.5A, SMD Package Output Specifications Parameter Output Voltage Setting Accuracy Line Regulation Conditions Min. ----------- 1.5V to 6.5V 9V to 15V 1.5V to 6.5V Io=10% to 100% 9V to 15V No minimum Load Requirement 1.5V to 6.5V --0-20MHz Bandwidth 9V to 15V ----50% Load Step Change ----Continuous, Automatic Recovery Vin=Min. to Max. @Full Load Load Regulation Minimum Load Ripple & Noise Transient Recovery Time Transient Response Deviation Temperature Coefficient Short Circuit Protection Typ. ±2.0 ±0.2 ±0.1 ±0.4 ±0.25 Max. ±3.0 ±0.4 ±0.2 ±0.6 ±0.4 Unit %Vnom. % % % % ----100 ±2 --- 30 40 ----±0.015 mV P-P mV P-P μsec % %/℃ Max. Unit General Specifications Parameter I/O Isolation Voltage Switching Frequency MTBF(calculated) Moisture Sensitivity Level (MSL) Conditions Min. none 280 MIL-HDBK-217F@25℃, Ground Benign IPC/JEDEC J-STD-020D.1 Typ. 330 380 2,000,000 Level 2 KHz Hours Environmental Specifications Parameter Conditions Min. Typ. Max. Unit Natural Convection -40 --- +90 ℃ Case Temperature --- --- +100 ℃ Storage Temperature -55 --- +125 ℃ --- 160 --- ℃ --- --- 95 % rel. H Operating Ambient Temperature Range (See Power Derating Curve) Thermal Shutdown Internal IC junction Humidity (non condensing) Cooling Natural Convection Lead-free reflow solder process IPC/JEDEC J-STD-020D.1 EMC Specifications Parameter EMI EMS Standards & Level Radiation without adding any external components Conduction with external components ESD Radiated immunity Fast transient(4) Conducted immunity PFMF E-mail:[email protected] 2015/07/31 REV:7 Tel:886-6-2923150 Page 2 of 6 Performance EN55022, FCC part 15 EN61000-4-2 Air±8kV EN61000-4-3 3V/m EN61000-4-4 ±0.5kV EN61000-4-6 3Vrms EN61000-4-8 3A/m Class B A A A A A ® M78SA Switching Regulator 0.5A, SMD Package EMI Filter meets Conducted EMI EN55022 class B; FCC part 15 level A L1 +Vout +Vin M78SA Module C1 C2 C3 Load GND Class C1 C2 C3 Class A --- 4.7μF/50V 1206 MLCC 4.7μF/50V 1206 MLCC Class B 4.7μF/50V 1206 MLCC 4.7μF/50V 1206 MLCC 4.7μF/50V 1206 MLCC L1 Wurth Elektronik NO. 744774033 Wurth Elektronik NO. 74477410 Power Derating Curve 100 Output Power (%) 80 Natural Convection 20LFM 60 40 20 0 ~ -40 0 20 40 60 80 100 110 Ambient Temperature C Notes 1 2 3 4 5 6 7 8 Specifications typical at Ta=+25℃, resistive load, nominal input voltage, rated output current unless otherwise noted. Other input and output voltage may be available, please contact factory. We recommend to protect the converter by a slow blow fuse in the input supply line. The M78SA series can meet EN61000-4-4 by adding a capacitor across the input pins. Suggested capacitor CHEMI-CON KY 330μF/100V. That “natural convection” is about 20LFM but is not equal to still air (0 LFM). With a input capacitor 22μF/50V for input voltage >28VDC, the input voltage allows 32VDC, max. Input voltage must be higher than output voltage set:>1.5V for 3.3V~5V and >3V for 6.5V~15V. Specifications are subject to change without notice. E-mail:[email protected] 2015/07/31 REV:7 Tel:886-6-2923150 Page 3 of 6 ® M78SA Switching Regulator 0.5A, SMD Package Adjustment Resistor Values M78SAR015-0.5 M78SAR018-0.5 M78SAR025-0.5 M78SAR033-0.5 M78SAR05-0.5 M78SAR065-0.5 M78SAR09-0.5 M78SAR12-0.5 1.5VDC 1.8VDC 2.5VDC 3.3VDC 5.0VDC 6.5VDC 9.0VDC 12VDC Vout(nom.) Vout(adj) R1 1.4 (V) 1 KΩ R2 1.5 (V) R1 R2 R1 3KΩ 1.8 (V) 6.49 KΩ 2.5 (V) 0.47 KΩ R2 R1 44.2KΩ 88.4KΩ R2 R1 R2 R1 R2 R1 R2 R1 M78SAR15-0.5 15VDC R2 R1 200Ω 12KΩ 11.8KΩ 3.0 (V) 4.64KΩ 17KΩ 3.3 (V) 3.6 (V) 60.4KΩ 27KΩ 15KΩ 42KΩ 21.5KΩ 3.9 (V) 28KΩ 58KΩ 30.1KΩ 4.5 (V) 11.3KΩ 180KΩ 56.3KΩ 26KΩ 17KΩ 10.5 KΩ 4.9 (V) 7.15KΩ 850KΩ 78.7KΩ 36KΩ 24KΩ 15.8 KΩ 5.0 (V) 6.34KΩ 86KΩ 39KΩ 26KΩ 17.4 KΩ 5.1 (V) 5.9KΩ 231KΩ 97KΩ 42KΩ 28KΩ 18.7 KΩ 5.5 (V) 3.9KΩ 56.2KΩ 154KΩ 56KΩ 36KΩ 24.9 KΩ 112KΩ 63KΩ 42.2 KΩ 400KΩ 125KΩ 78.7 KΩ 6.5 (V) 14KΩ 8.0 (V) 2.32KΩ 22.6KΩ 9.0 (V) 9.53KΩ 10 (V) 3.92KΩ 11 (V) 825Ω 200KΩ 113 KΩ 54.9KΩ 345KΩ 160 KΩ 16.5KΩ 740KΩ 232 KΩ 12 (V) 3.6KΩ 12.6 (V) 0Ω 13.5 (V) 15.5 (V) 340 KΩ 180KΩ 464 KΩ 57.6 KΩ 787 KΩ 300 KΩ +Vin +Vo Switching Regulator R1 On/Off Adj R2 -Vin E-mail:[email protected] 2015/07/31 REV:7 R2 Tel:886-6-2923150 Page 4 of 6 -Vo ® M78SA Switching Regulator 0.5A, SMD Package Package Specifications Connecting Pin Patterns 2.54x4 [0.10x4] 6 TOP View 1 2 3 4 5 9.6 [0.38] 7 11.7 [0.46] 8 9.6 [0.38] 9 10.16 [0.40] 12.35 [0.49] 10 2.1 [0.08] 15.3 [0.60] 2.57 [0.10] 13.8 [0.54] Mechanical Dimensions 0.44 [0.02] 0.55 [0.02] 2.54 [0.10] 9.24 [0.36] 8.8 [0.35] 1.30 [0.05] 1.2 [0.05] S SEATING PLANE 4 0~ ►All dimensions in mm 0.1 S ►Tolerance: X.X±0.5 (inches) (X.XX±0.02) X.XX±0.25 ( X.XXX±0.01) ►Pins ±0.05(±0.002) Pin Connections Pin 1 Function : 15.3x9.6x8.8mm (0.60x0.38x0.35 inches) Case Material : Non-Conductive Black Plastic (flammability to UL 94V-0 rated) Pin Material : phosphor bronze Weight : 1.7g +Vin 2 +Vin 3 GND 4 +Vout 5 +Vout 6 Vadj. 7 GND 8 GND 9 GND 10 Remote On/Off E-mail:[email protected] 2015/07/31 REV:7 Physical Characteristics Case Size Tel:886-6-2923150 Page 5 of 6 ® M78SA Switching Regulator 0.5A, SMD Package Test Setup Peak-to-Peak Output Noise Measurement Test Use a Cout 0.47μF ceramic capacitor. Scope measurement should be made by using a BNC socket, measurement bandwidth is 0-20 MHz. Position the load between 50 mm and 75 mm from the DC/DC Converter. +Vin + +Out Copper Strip Switching Regulator DC Power Source Cout GND - Scope Resistive Load Copper Strip Technical Notes Output Ripple Reduction A good quality low ESR capacitor placed as close as practicable across the load will give the best ripple and noise performance. To reduce output ripple, it is recommended to use 3.3μF capacitors at the output. + + Out +Vin Switching Regulator DC Power Source Cout Load GND - Maximum Capacitive Load The M78SA series has limitation of maximum connected capacitance on the output. The power module may operate in current limiting mode during start-up, affecting the ramp-up and the startup time. The maximum capacitance can be found in the data sheet. 18, Sin Sin Road, An-Ping Industrial District, Tainan 702, Taiwan Tel: 886-6-2923150 Fax: 886-6-2923149 E-mail: [email protected] Minmax Technology Co., Ltd. 2015/07/31 REV:7 Page 6 of 6