rev. page 1 of 3 date 08/2007 DESCRIPTION: DC/DC converter PART NUMBER: VSCD25 series features ·14.4 to 25W isolated output ·efficiency up to 91% ·fixed 300KHz switching frequency ·regulated outputs ·2:1 input range ·continuous short circuit protection ·six-sided metal case or openframe ·2" X 1.6" size ·industry standard pin-out model number VSCD25-D24-S1R8 VSCD25-D24-S2R5 VSCD25-D24-S3R3 VSCD25-D24-S5 VSCD25-D24-S12 VSCD25-D24-S15 VSCD25-D48-S1R8 VSCD25-D48-S2R5 VSCD25-D48-S3R3 VSCD25-D48-S5 VSCD25-D48-S12 VSCD25-D48-S15 input voltage 18-36VDC 18-36VDC 18-36VDC 18-36VDC 18-36VDC 18-36VDC 36-75VDC 36-75VDC 36-75VDC 36-75VDC 36-75VDC 36-75VDC output voltage 1.8VDC 2.5VDC 3.3VDC 5.0VDC 12VDC 15VDC 1.8VDC 2.5VDC 3.3VDC 5.0VDC 12VDC 15VDC output current 8A 8A 6A 5A 2A 1.6A 8A 8A 6A 5A 2A 1.6A input current no load full load 70mA 723mA 70mA 970mA 70mA 940mA 70mA 1170mA 50mA 1136mA 50mA 1136mA 50mA 353mA 50mA 479mA 50mA 465mA 50mA 572mA 30mA 562mA 30mA 562mA efficiency 83% 86% 88% 89% 88% 88% 85% 87% 89% 91% 89% 89% GENERAL SPECIFICATIONS efficiency isolation voltage isolation resistance see table 1500VDC max. 10 8 Ohm min. switching frequency 300KHz, Typ operating temperature range -40°C to +85°C case temperature 100°C max. storage temperature range -55°C to +125°C thermal shutdown, case temp. 100°C Typ. dimensions: metal case material: metal case 2.00x1.60x0.45 inches open frame 1.95x1.55x0.35 inches black coated copper with non-conductive base 20050 SW 112th Ave. Tualatin, Oregon 97062 phone 503.612.2300 fax 503.612.2382 size SC SC SC SC SC SC SC SC SC SC SC SC rev. page 2 of 3 date 08/2007 DESCRIPTION: DC/DC converter PART NUMBER: VSCD25 series INPUT input voltage range undervoltage lockout 24Vin power up 24Vin power down 48Vin power up 48Vin power down positive logic remote on/off 3,4 input filter 24V 18-36V 48V 36-75V 17V 16V 34V 32V PI type OUTPUT voltage accuracy transient response recovery time error band output voltage adjustment range, %Vo ripple and noise, 20MHz BW (measured with 0.1µF MLCC) 1.8V & 2.5V & 3.3V & 5V 12V & 15V temperature coefficient output line regulation 1 output load regulation 2 output over voltage protection (Zener diode clamp) 1.8V & 2.5V 3.3V 5V 12V 15V output current limit,% nominal output output short circuit protection ±1% max. 75-100% step load change <300µ sec. ± 5%Vout nominal 90-110% 20mV RMS, max. 75mV pk-pk, max. 20mV RMS, max. 100mV pk-pk, max. ±0.02% / °C ±0.5 max. ±0.5 max. 3.3V 3.9V 6.2V 15V 18V 110%-150% continuous (hiccup mode) NOTE : 1. measured from high line to low line 2. measured from full load to 10% load 3. logic compatibility (CMOS or open collector TTL, ref. to -Vin -module on >3.5Vdc or open circuit - module off <1.8Vdc 4. suffix “N” to the model number with negative logic remote on/off -module on <1.8Vdc -module off >3.5Vdc or open circuit 20050 SW 112th Ave. Tualatin, Oregon 97062 phone 503.612.2300 fax 503.612.2382 rev. page 3 of 3 date 08/2007 DESCRIPTION: DC/DC converter PART NUMBER: VSCD25 series DIMENSIONS (mm) Open Frame (Suffix "O") Metal Case 4 3 1 1.60 (40.64) 0.70 0.50 (17.78) (12.70) 0.30 0.10 (7.62) (2.54) 0.040 (1.02) 0.70 (17.78) 0.070 (1.78) 0.600 (15.24) 0.200 (5.08) 8 6 7 0.22min. (5.60) 5 1.95 (49.50) 1.80 (45.72) 0.04 DIA (1.02) 1.80 (45.72) BOTTOM VIEW 2.00 (50.80) 4 7 6 0.100 (2.54) 0.300 (7.62) 0.14 (3.60) 0.15 (3.80) 5 0.70 (17.78) 1.55 (39.40) 0.70 (17.78) 3 1 0.45 (11.43) 0.20 (5.08) 0.60 (15.24) 0.40 (10.16) PIN CONNECTION Pin All Dimensions In Inches(mm) Tolerances: .XX±.04 .XXX±.010 Function 1. On/Off Control -V Input 3. +V Input 4. Trim 5. -V Output 6. +V Output 7. No Pin 8. Remote ON/OFF Control External Output Trim ON/OFF (1) +Vout (7) +Vout (7) TRIM DOWN 10K ohms TRIMPOT TRIM (5) TRIM (5) HIGH SIGNAL HERE DISABLE OUTPUT -VIN (3) TRIM UP -Vout (6) -Vout (6) DERATING CURVE 120% Output Load(%) 100% 71 -40 80% 60% Vo=3.3V Others 40% 20% 100 0% -40 -20 0 20 40 60 80 100 Ambient Temperature(˚C) 20050 SW 112th Ave. Tualatin, Oregon 97062 phone 503.612.2300 fax 503.612.2382