B78C03-2R0-R1

B78CXX-2R0-R1 Series Non-isolated DC-DC Converters Features  4.75~36Vin(3.3Vout).6.5-36Vin(5.0Vout).15-36Vin(12.0Vout)  Fixed Output: 3.3 or 5 or 12V@ 2A  Vertical SIP, small footprint package  “No heat sink” direct replacement for Description The B78CXX-2R0 Series are non-isolated DC/DC converters suited to replace 2Amp LM78xx linear regulators. Designed with highly efficiency, allow the operating temperature range of these units to be -40°C to +85°C in a 11.6*8.5*17.5mm. Further features include wide 4.75~36VDC input voltage range, short-circuits protection and over temperature protection. 3-terminal78xx-series linear regulators  High efficiency with no external components  Short circuit protection  Outstanding thermal derating performance  UL/EN/IEC 60950-1, 2nd Edition safety meets Technical Specification All specifications are typical at nominal input, full load and 25°C unless otherwise stated. Model Number B78C03-2R0-R1 B78C05-2R0-R1 B78C12-2R0–R1 B78C03-2R0 B78C05-2R0 B78C12-2R0 Input Voltage Range 4.75-36V Nominal:12V 6.5-36V Nominal:12V 15-36V Nominal:24V 4.75-36V Nominal:12V 6.5-36V Nominal:12V 15-36V Nominal:24V E-mail: sales@bothhand.com.tw Output Output Current (mA) Voltage Min. Load (1) Full. Load (V) Eff .(2) (%) Vin_min Vin_max. Capacitive Load, max. (3) (uF) 3.3 0 2000 90 86 1200 5 0 2000 93 90 660 12 0 2000 97 93 470 3.3 0 2000 90 86 1200 5 0 2000 93 90 660 12 0 2000 97 93 470 https://www.bothhandww.com 20210115 Rev:A0 Page 1 of 7 Input Specifications Input voltage B78C03-2R0-R1 B78C05-2R0-R1 B78C12-2R0-R1 12V nominal input 12V nominal input 24V nominal input 4.75-36V 6.5-36V 15-36V Input filter Input Reverse Polarity Capacitor type None, install external fuse(2A Fast blow) No Load Input Current 10mA Typ. Hot swap is not supported Environmental Specifications Operating ambient temperature -40°C to +85°C (with derating) Storage temperature range -55°C to +125°C Relative humidity 5% TO 95% RH max. Temperature coefficient ±0.02% / °C Typ. RoHS Compliant RoHS 2.0 Output Specifications Output current Voltage accuracy 2A max. At 50% load -4% Min. +4% Max. Minimum load (No minimum load) Line regulation Vin=min. to max. Vout=nom. Load Regulation 10 -100% load 0mA ±0.4% Typ ±0.8% max. ±0.5% Typ ±1.5% max Ripple and Noise (20MHz Bandwidth) 75mVp-p max. Capacitive load 2200uS max 200% Typ 250% max Over Current Protection(OCP) 100%=1A Short Circuit Protection(SCP) Continuous, autorecovery General Specifications Efficiency See table Switching frequency (Fixed) Pulse width modulation (PWM) 410kHz Typ Dynamic load response 75-100-75% 25%load step 100uS Typ Reliability, calculated MTBF B78C03-2R0/ B78C05-2R0 2.0×106Hrs Safety(5) UL-60950-1,IEC/EN60950-1,2nd Edition meet Physical Specifications Dimensions 0.45 × 0.33 × 0.68 Inch (11.6 × 8.5 × 17.5 mm) Weight 4g (0.142oz) typ. Efficiency Curve E-mail: sales@bothhand.com.tw https://www.bothhandww.com 20210115 Rev:A0 Page 2 of 7 B78C03-2R0-R1 B78C05-2R0-R1 Efficiency vs Line Voltage and Load Current@+25°C(Vout=Vnom.) 0 0.2 0.4 0.6 0.8 1.0 1.2 Efficiency vs Line Voltage and Load Current@+25°C(Vout=Vnom.) 1.6 2.0 0 0.2 0.4 Load Current (Amp) 0.6 0.8 1.0 1.2 1.6 2.0 Load Current (Amp) Power Derating Curve Maximum Current Temperature Derating at sea level(Vin=6.5V to 36V) Output Current (Amps) 3.00 2.00 1.00 0.00 20 25 30 35 40 45 50 55 60 65 70 75 80 85 Ambient Temperature (°C) Note 1. Io below this value will not damage these converters, however, they may not meet all listed specifications. 2. Typical value, tested at nominal input and full load. 3. Specifications subject to change without notice. 4. This power module is not internally fused. The input line fuse must always be used. 5. Input Back Ripple Current is tested and specified over a 5 Hz to 20 MHz bandwidth. Input filtering is Cin=2x 100 uF, Cbus=1000 uF, Lbus=1 uH. All caps are low ESR types. E-mail: sales@bothhand.com.tw https://www.bothhandww.com 20210115 Rev:A0 Page 3 of 7 Mechanical Dimensions FRONT VIEW SIDE VIEW Pin Assignment Pin Define 1 Positive Input 2 Common(Ground) 3 Positive Output BOTTOM VIEW Unit: mm Tolerance: XX.X=±0.5, XX.XX=±0.25 Package Information 27.84±0.30 6.81±0.30 11.73±0.30 20.6±0.30 0.6±0.30 PS: Unit: mm [inch] L= 220 mm[8.66 inch] ; ONE TUBE = 16 PCS EMI Filter ( Recommended Filter for EN55032 class A Compliance ) E-mail: sales@bothhand.com.tw https://www.bothhandww.com 20210115 Rev:A0 Page 4 of 7 The components used in the above figure, together with the manufacturers’ part numbers for these components, are as follows: Models C1 C2 L1 B78C03-2R0-R1 10uF/50V 10uF/50V PCM090704S-701 SMD B78C05-2R0-R1 MLCC MLCC Common mode choke 10uF/50V 10uF/50V PCM090704S-102 SMD MLCC MLCC Common mode choke B78C12-2R0-R1 EMI Filter ( Recommended Filter for EN55032 class B Compliance ) E-mail: sales@bothhand.com.tw https://www.bothhandww.com 20210115 Rev:A0 Page 5 of 7 The components used in the above figure, together with the manufacturers’ part numbers for these components, are as follows: Models C1 C2,C3 C4,C5 100uF/50V C7,C8,C9 100uF/50V B78C03-2R0-R1 Aluminum 10uF/50V B78C05-2R0-R1 electrolytic solid MLCC N/A capacitors B78C12-2R0-R1 C6 Aluminum 10uF/50V electrolytic solid MLCC capacitors 100uF/50V 100uF/50V 100uF/50V Aluminum Aluminum 10uF/50V Aluminum electrolytic solid electrolytic solid MLCC electrolytic solid capacitors capacitors L1 PCM090704S-701 SMD Common mode choke PCM090704S-102 10uF/50V MLCC capacitors SMD Common mode choke Test Configurations All specifications are typical at nominal input, full load and 25°C unless otherwise stated. A A DC Power Supply V DC/DC converter V Load ◎DC Power Supply: It offers a wide voltage and current range precisely. ◎Current meter (A): Accuracy 200μA ~ 200mA 4 ranges+(0.2% rdg + 2 digits) 2000mA ~ 20A 2 ranges+(0.3% rdg + 2 digits). ◎Voltage meter (V): Accuracy +(0.03% rdg + 4 digits). ◎Load: At full load. ◎Wires: The resistance of the wires must be small. 1. Ripple and Noise: as shown below. The bandwidth is 0-20MHz. E-mail: sales@bothhand.com.tw https://www.bothhandww.com 20210115 Rev:A0 Page 6 of 7 Ripple&Noise Noise Ripple Output Ripple&Noise measurement test circuit: as shown below. Copper strip DC/DC converter Co Load Oscilloscope Copper strip Co: usually 10uF to 47uF use low-ESR ceramic. 2. Temperature derating curve: The DC-DC converter will operate over a wider temperature range if less power is drawn from the output and the device is already running. The temperature derating curve shows the operating power-temperature range. As shown below. Maximum Current Temperature Derating at sea level(Vin=6.5V to 36V) Output Current (Amps) 2.00 1.00 0.00 20 25 30 35 40 45 50 55 60 65 70 75 80 85 Ambient Temperature (°C) 3. Application circuit: as shown below. C1=100uF/50V, C2 =47uF/16V MLCC. +Vin 1 C1 DC-DC converter 2 3 +Vout C2 Load GND E-mail: sales@bothhand.com.tw https://www.bothhandww.com 20210115 Rev:A0 Page 7 of 7