ARCH ST20-48-5S, ST20-48-3.3S, ST20-48-2.5S, ST20-24-5S, ST20-24-3.3S Datasheet

Encapsulated DC-DC Converter

ST20 SERIES 20 Watts

KEY FEATURES

 Power Modules for PCB Mounting

PRELIMINARY

 Synchronous Rectifier Topology
 Surface Mount Technology
 Remote ON/OFF Control (Optional)
 4:1 Input Range (Optional)
 Standard 2” x 1” Package and Pinout
 2-Year Product Warranty

ELECTRICAL SPECIFICATIONS

Model No. ST20-24-2.5S ST20-24-3.3S ST20-24-5S
Max. output wattage (W) 12.5W 14W 20W
Input voltage (V.DC.) 24V (18-36V) 24V (18-36V) 24V (18-36V)
Output voltage (V.DC.) 2.5V / 5000mA 3.3V / 4250mA 5V / 4000mA

Model No. ST20-48-2.5S ST20-48-3.3S ST20-48-5S
Max. output wattage (W) 12.5W 14W 20W
Input voltage (V.DC.) 48V (36-75V) 48V (36-75V) 48V (36-75V)
Output voltage (V.DC.) 2.5V / 5000mA 3.3V / 4250mA 5V / 4000mA

Model No.

Max output wattage (W)
Input Input filter

Output

Protection

Isolation

Environment

Physical

Voltage (V.DC.) 2.5 3.3 5
Voltage accuracy
Current (mA) max 4250 4000 4000
Line regulation (HL-LL) (typ.)
Load regulation (10-100%) (typ.)
Ripple <0.2% Vout +20mV max (Vp-p)
Noise <0.5% Vout +50mV max (Vp-p)
Efficiency 86% 87% 88%
Switching frequency 400KHz 400KHz 400KHz
Over current protection Works over 120% of rating and recovers automatically.
Over voltage protection Zener diode clamp
Short circuit protection Current limit, auto-recovery
Transient response
Voltage 1600 VDC.
Resistance
Capacitance 1000 pF
Operating temperature -25°C…+71°C
Storage temperature -55°C…+105°C
Case temperature +95°C max.
Temperature coefficient
Humidity 95% RH
MTBF >550,000 h @ 25°C (MIL-HDBK-217F)
Dimension (L x W x H) 2.0 x 1.0 x 0.413 Inches (50.8 x 25.4x 10.5 mm)
Case Material Nickel-Coated Copper with Non-Conductive base, six-side shielded.
Weight 30 g
Cooling method Free-air convection

ST20-24-2.5S
ST20-48-2.5S

12.5W 14W 20W

π type

±2% ±2% ±2%

±0.5% ±0.5% ±0.5%
±1% ±1% ±1%

≦500 us (100% to 50% full load at ±1% error band)

9

ohms

10

±0.02% Per°C

All specifications valid at nominal input voltage, full load and +25°C after warm-up time unless otherwise stated.

ST20-24-3.3S
ST20-48-3.3S

ST20-24-5S
ST20-48-5S

http://www.archcorp.com.tw

TEL: [phone] FAX: [phone] -1-

Encapsulated DC-DC Converter

ST20 SERIES 20 Watts

MECHANICAL DIMENSION (Top View)

PIN# Single

1 +-DC IN
2 -DC IN
3 REMOTE ON/OFF

DERATING

4 +DC OUT
5 NO PIN
6 -DC OUT

BLOCK DIAGRAM

http://www.archcorp.com.tw

TEL: [phone] FAX: [phone] -2-