SMSA SERIES
5 WATT
DC/DC CONVERTERS
Electrical Characteristics: 25°C Tc, 28 VDC Vin, 100% load, radiation level O, unless otherwise specified.
DUAL OUTPUT MODELS
SMSA 2805D
SMSA2812D
SMSA2815D
MIN TYP
PARAMETER
CONDITIONS
MIN
4.95
4.9
TYP
5.00
5.0
MAX
MIN
TYP
11.88 12.00
11.76 12.00
MAX
12.12
12.24
MAX
UNITS
OUTPUT VOLTAGE
+V
5.05
5.1
14.85 15.00 15.15
14.70 15.00 15.30
OUT
VDC
–V
OUT
1
OUTPUT CURRENT
V
= 16 to 40 VDC
IN
Tc = –55°C to +125°C
—
500
800
—
208
333
—
167
267
mA
1
OUTPUT POWER
V
= 16 to 40 VDC
IN
Tc = –55°C to +125°C
10 kHz - 2 MHz
—
—
—
—
5
—
—
—
5
—
—
—
5
W
OUTPUT RIPPLE VOLT.
LINE REGULATION
300
80
300
120
300
mV p-p
Vin = 16 to 40 VDC
Tc = –55°C to +125°C
+V
—
—
20
40
100
200
—
—
20
40
100
200
—
—
10
40
50
OUT
mV
–V
180
OUT
LOAD REGULATION
NO LOAD TO FULL
Tc = –55°C to +125°C
+V
—
—
10
120
400
—
—
10
120
400
—
—
10
50
50
OUT
mV
%
–V
100
100
200
OUT
2
CROSS REGULATION
+P = 30 - 70 %, –P =70 - 30%
O
O
—
5
8
—
3.7
28
6
—
3
6
–P = 30 - 70 %, +P = 70 - 30%
O
O
NO LOAD TO FULL
CONTINUOUS
INPUT VOLTAGE
INPUT CURRENT
16
28
40
16
40
16
28
40
VDC
V
5
TRANSIENT 50 msec
—
—
—
50
50
—
—
—
50
63
—
—
—
50
60
NO LOAD
30
40
38
FULL LOAD
INHIBITED
—
—
—
—
65
248
3
—
5
—
—
—
—
67
235
3
—
5
—
—
—
—
68
235
3
—
5
mA
INPUT RIPPLE
CURRENT
10 kHz TO 10 MHz
Tc = –55°C to +125°C
50
60
70
200
300
—
50
60
73
200
300
—
50
60
73
200
300
—
mA p-p
%
EFFICIENCY
3, 4
LOAD FAULT
POWER DISSIPATION
SHORT CIRCUIT
—
—
1.3
—
1.8
50
—
—
1.3
1
1.7
30
—
—
1.3
1
1.6
50
W
RECOVERY
ms
STEP LOAD
RESPONSE
50% - 100% - 50% BALANCED
TRANSIENT
—
—
200
200
550
500
—
—
200
200
550
500
—
—
220
200
600
500
mV
µs
4, 5
RECOVERY
4, 5
STEP LINE RESP.
16 TO 40 VDC
—
—
200
200
500
500
—
—
200
200
500
500
—
—
600
600
1500
1500
mV pk
µs
TRANSIENT
40 TO 16 VDC
16 TO 40 VDC
—
—
—
—
300
800
10
750
2000
30
—
—
—
—
300
800
10
750
2000
30
—
—
—
—
500
500
10
1200
1200
25
RECOVERY
40 TO 16 VDC
START-UP
DELAY
ms
5
OVERSHOOT
0
500
0
500
0
500
mV pk
Notes
1. Up to 4 watts (80% of full power) is available from either output providing the
opposite output is carrying 20% of total power.
3. Indefinite short circuit protection not guaranteed above 125°C (case).
4. Recovery time is measured from application of the transient to point at which
2. Shows regulation effect on the minus output during the defined cross loading
conditions, with 80% and 20% referring to the total output power of the
converter. See Figures 15 and 16.
V
is within 1% of V at final value.
OUT
OUT
5. Guaranteed but not tested.
3
CRANE [ Crane Aerospace & Electronics. ]
