SMSA283R3SKR Datasheet, PDF (2/14 Pages) Crane Aerospace & Electronics. – SMSA Single and Dual DC/DC Converters

Crane Aerospace & Electronics Power Solutions
SMSA Single and Dual DC/DC Converters
28 Volt input – 5 Watt - Pending Revision F Release
Operating Conditions and
characteristics
Input Voltage Range
• 16 to 40 VDC continuous
• 50 V for up to 50 msec transient
Output Power
• 5 watts
Lead Soldering Temperature (10 sec per lead)
• 300°C
Storage Temperature Range (Case)
• -65°C to +135°C
Case Operating Temperature (Tc)
• -55°C to +125°C full power
• -55°C to +135°C absolute
Derating Output Power/Current (Tc)
• Linearly from 100% at 125°C to 0% at 135°C
Output Voltage Temperature Coefficient
• 100 ppm/°C typical
Input to Output Capacitance
• 50 pF typical
Isolation
• 100 megohm minimum at 500 VDC
• Any pin to case, except case pin
• Audio Rejection
• 50 dB typical
Conversion Frequency
• 500 kHz typical
• 450 kHz min, 600 kHz max
Inhibit
• Active low (output disabled)
--Active low voltage ≤0.8 V max
--Inhibit pin current 4 mA max
--Referenced to input common
• Active high (output enabled)
--Open collector
--Open pin voltage, 9 - 11 Volts
mechanical and environmental
Size (maximum)
• 1.075 x 1.075 x 0.270 inches (27.31 x 27.31 x 6.86 mm)
• See case C1 for dimensions.
Weight (maximum)
• 15 grams typical
Screening
Space Prototype (O), Class H, or Class K are radiation tolerant to
Radiation Hardness Assurance (RHA) levels of “-” (O) or “R”, per
MIL-STD-38534. Interpoint model numbers use an “O” in the RHA
designator position to indicate the “-” (dash) Radiation Hardness
Assurance level of MIL-PRF-38534, which is defined as “no RHA”.
See “Class H and K, MIL-PRF-38534 Screening” tables for more
information. Available configurations: OO, HP, KP, HR, KR
SMSA SINGLE AND DUAL
Positive ⁶
Input
Input Filter
Output Filter
1 _Positive
Output
Inhibit ⁵
Input
Common
7
Case ⁸
Ground
www.interpoint.com
PWM
Control
Error
Amp
VRef
2 _Output
Common
Feedback
Output Filter
= DUAL OUTPUT
Figure 1: SMSA Block Diagram
3 _Negative
Output
Page 2 of 14
Rev F - 20090318 - Pending Revision F Release