SMSA SERIES
5 WATT
ABSOLUTE MAXIMUM RATINGS
Input Voltage
• 16 to 40 V
Output Power
• 5 watts
Lead Soldering Temperature (10 sec per lead)
• 300°C
Storage Temperature Range (Case)
• –65°C to +135°C
DC/DC C
ONVERTERS
INHIBIT
Inhibit TTL Open Collector
• Logic low (output disabled)
Logic low voltage
≤0.8
V max
Inhibit pin current 4 mA max
• Referenced to input common
• Logic high (output enabled)
Open collector
TYPICAL CHARACTERISTICS
Output Voltage Temperature Coefficient
• 100 ppm/°C typical
Input to Output Capacitance
• 50 pF typical
Isolation
• 100 megohm minimum at 500 V
Audio Rejection
• 50 dB typical
Conversion Frequency
• 550 kHz typical
450 kHz min, 600 kHz max
Inhibit Pin Voltage (unit enabled)
• 9 to 11 V
RECOMMENDED OPERATING CONDITIONS
Input Voltage Range
• 16 to 40 VDC continuous
• 50 V for up to 50 msec transient
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
Electrical Characteristics: 25°C Tc, 28 VDC Vin, 100% load, radiation level O, unless otherwise specified.
SINGLE OUTPUT MODELS
PARAMETER
CONDITIONS
OUTPUT VOLTAGE
Tc = –55°C TO +125°C
OUTPUT CURRENT
Tc = –55°C TO +125°C
V
IN
= 16 TO 40 VDC
OUTPUT POWER
OUTPUT RIPPLE
VOLTAGE
LINE REGULATION
LOAD REGULATION
INPUT VOLTAGE
V
IN
= 16 TO 40 VDC
Tc = –55°C TO +125°C
10 kHz - 2 MHz
V
IN
= 16 TO 40 VDC
Tc = –55°C TO +125°C
NO LOAD TO FULL
Tc = –55°C TO +125°C
Tc = –55°C TO +125°C
NO LOAD TO FULL
CONTINUOUS
TRANSIENT
3
50 ms
NO LOAD
FULL LOAD
INHIBITED
10 kHz - 10 MHz
Tc = –55°C TO +125°C
POWER DISSIPATION
RECOVERY
50% - 100% - 50%
TRANSIENT
RECOVERY
2, 3
TRANSIENT
16 TO 40 V
IN
40 TO 16 V
IN
RECOVERY
16 TO 40 V
IN
40 TO 16 V
IN
START-UP
DELAY
OVERSHOOT
3
—
—
—
—
—
300
10
10
4
600
50
50
—
—
—
—
—
150
10
10
5
450
50
50
—
—
—
—
—
125
10
10
5
500
50
50
—
—
—
—
—
150
10
10
5
600
50
50
W
mV p-p
mV
mV
SMSA283R3S
MIN TYP MAX
3.25 3.30 3.35
0
—
1200
SMSA2805S
MIN TYP MAX
4.95 5.00 5.05
0
—
1000
SMSA2812S
MIN TYP MAX
11.88 12.00 12.12
0
—
417
SMSA2815S
MIN TYP MAX
14.85 15.00 15.15
0
—
333
UNITS
VDC
mA
INPUT CURRENT
INPUT RIPPLE
CURRENT
EFFICIENCY
LOAD FAULT
1, 2
SHORT CIRCUIT
STEP LOAD
RESPONSE
STEP LINE
RESPONSE
2, 3
16
0
—
—
—
—
—
60
—
—
—
—
—
—
—
—
—
—
28
—
35
250
3
50
60
—
1.5
12.5
200
200
200
200
400
400
10
0
40
50
60
—
5
200
300
—
2.4
25
500
500
500
500
1000
1000
75
200
16
0
—
—
—
—
—
68
—
—
—
—
—
—
—
—
—
—
28
—
35
250
3
50
60
74
1.5
12.5
200
200
200
200
400
400
10
0
40
50
60
—
5
200
300
—
2.0
25
500
500
500
500
1000
1000
75
200
16
0
—
—
—
—
—
69
—
—
—
—
—
—
—
—
—
—
28
—
35
235
3
50
60
74
1.2
1
300
400
200
250
700
700
10
0
40
50
60
—
5
200
300
—
1.9
10
750
1000
800
600
1300
1300
75
500
16
0
—
—
—
—
—
%
—
—
—
—
—
—
—
—
—
—
28
—
35
235
3
50
60
1.2
1
400
400
200
200
500
500
10
0
40
50
60
—
5
200
300
1.8
10
1000
1000
500
500
1300
1300
75
500
VDC
V
mA
mA p-p
W
ms
mV pk
µs
mV pk
µs
ms
mV pk
Notes
1. Indefinite short circuit protection not guaranteed above 125°C (case).
2. Recovery time is measured from application of the transient to point at which
V
OUT
is within 1% of V
OUT
at final value.
3. Guaranteed but not tested.
®
46
INTERPOINT [ INTERPOINT CORPORATION COMPANY ]
