VER : A_0 update : 94.03.21 Encapsulated DC-DC Converter NI25 SERIES 25 Watts KEY FEATURES Non-Isolation Output Synchronous-rectifier Topologies High Efficiency High Power Density 2-Years Product Warranty ELECTRICAL SPECIFICATIONS Model No. Max. Output Wattage (W) Input Voltage (V.DC.) Output Voltage (V.DC.) NI25-3-1.5S 15W 3V (3.0-3.6V) 1.5V / 10,000mA NI25-3-1.8S 18W 3V (3.0-3.6V) 1.8V / 10,000mA NI25-3-2.1S 21W 3V (3.0-3.6V) 2.1V / 10,000mA NI25-3-2.5S 25W 3V (3.0-3.6V) 2.5V / 10,000mA Efficiency 80% 84% 86% 88% Model No. Max. Output Wattage (W) Input Voltage (V.DC.) Output Voltage (V.DC.) NI25-5-1.5S 15W 5V (4.5-5.5V) 1.5V / 10,000mA NI25-5-1.8S 18W 5V (4.5-5.5V) 1.8V / 10,000mA NI25-5-2.1S 21W 5V (4.5-5.5V) 2.1V / 10,000mA NI25-5-2.5S 25W 5V (4.5-5.5V) 2.5V / 10,000mA NI25-5-3.3S 33W 5V (4.5-5.5V) 3.3V / 10,000mA Efficiency 83% 86% 88% 90% 92% Model No. Max Output Wattage (W) Input Input Filter Voltage (V.DC.) Voltage Accuracy Current (mA) max Line Regulation (LL-HL) (typ.) Output Load Regulation (10-100%) (typ.) Ripple Noise Switching Frequency Over Power Protection Protection Short Circuit Protection Operating Temperature Storage Temperature Environment Temperature Coefficient Humidity MTBF Dimension (L x W x H) Case Material Physical Weight Cooling Method NI25-3-1.5S NI25-3-1.8S NI25-3-2.1S NI25-3-2.5S NI25-5-1.5S NI25-5-1.8S NI25-5-2.1S NI25-5-2.5S 15W 18W 21W 25W 33W 2.5 3.3 10,000 10,000 Capacitor 1.5 1.8 2.1 ±2% 10,000 10,000 10,000 ±0.5% ±1% 50mV max (Vp-p) 100mV max (Vp-p) 500KHz Works over 120% of rating and shut down Current limit, shut down -25°C…+50°C (with derating) -55°C…+105°C ±0.02% Per°C 95% RH >1,000,000 h @ 25°C (MIL-HDBK-217F) 2.0 x 0.34 x 0.55 Inches ( 51.0 x 8.6 x 14.0 mm ) Tolerance ±0.5 mm Open Frame 10 g Free-air convection NI25-5-3.3S All specifications valid at nominal input voltage, full load and +25°C after warm-up time unless otherwise stated. http://www.archcorp.com.tw TEL: +886-2-26989508 FAX: +886-2-26981319 -1- VER : A_0 update : 94.03.21 Encapsulated DC-DC Converter NI25 SERIES MECHANICAL DIMENSION 25 Watts ( Top View ) DERATING PIN# Single 1 +VOUT 2 +VOUT 3 NC 4 +VOUT 5 GND 6 GND 7 +VIN 8 +VIN 9 NC 10 TRIM 11 REMOTE ON / OFF BLOCK DIAGRAM http://www.archcorp.com.tw TEL: +886-2-26989508 FAX: +886-2-26981319 -2-