TYPICAL PERFORMANCE CURVES
DHC2803S
EFFICIENCY CONTOURS
50
INPUT VOLTAGE, V
IN
(V)
30%
EFFICIENCY CONTOURS
50
30%
EFFICIENCY CONTOURS
50
INPUT VOLTAGE, V
IN
(V)
30%
40%
INPUT VOLTAGE, V
IN
(V)
40%
TEMP = 25°C
50%
55%
60%
TEMP = –55°C
40%
50%
55%
TEMP =
125°C
50%
55%
60%
62%
40
40
40
30
63%
65%
67%
30
60%
63%
65%
30
64%
20
70%
68%
69%
20
66%
67%
68%
20
66%
67%
65%
11
.18 .36
.72
1.08
1.44
1.8
OUTPUT CURRENT, I
OUT
(A)
68%
11
.18 .36
.72
1.08
1.44
1.8
OUTPUT CURRENT, I
OUT
(A)
11
.18 .36
.72
1.08
1.44
1.8
OUTPUT CURRENT, I
OUT
(A)
OUTPUT RESPONSE, X
OUT
(1V/DIV)
V
(UNITS/DIV)
16
OUTPUT DC
CURRENT RATING
1V
14
1.8A
500mA
1V
V
OUT
V
OUT
(1V/DIV)
OUTPUT RESPONSE, X (UNITS/DIV)
LOW LINE DROP OUT
INPUT VOLTAGE, V
IN
(V)
LOAD TRANSIENT RESPONSE
LOAD TRANSIENT RESPONSE 100µF
V
OUT
1.8A
500mA
12
.9A
I
OUT
NO OUTPUT BUS CAPCITANCE
.9A
I
OUT
INCLUDES 100µF ON OUTPUT BUS
10
0.0
0.5
1.0
1.5
2.0
OUTPUT CURRENT, I
OUT
(A)
TIME, t (100µsec/DIV)
OUTPUT RESPONSE,
V
OUT
(50mV/DIV)
X (UNITS/DIV)
10V
50mV
OUTPUT RESPONSE,
V
OUT
(100mV/DIV)
X (UNITS/DIV)
TIME, t (200µsec/DIV)
OUTPUT RESPONSE, X
OUT
(1V/DIV)
V
(UNITS/DIV)
LOAD TRANSIENT RESPONSE 1000µF
LINE TRANSIENT RESPONSE
LINE TRANSIENT RESPONSE
100mV
1V
V
OUT
V
OUT
V
OUT
1.8A
500mA
40V
80V
.9A
I
OUT
INCLUDES 1000µF ON OUTPUT BUS
V
IN
16V
TIME, t (500µsec/DIV)
TIME, t (200µsec/DIV)
20V
V
IN
11V
TIME, t (200µsec/DIV)
TURN ON THRESHOLD
28
RESPONSE, X
V
OUT
(1V/DIV)
(UNITS/DIV)
10 V
1V
TURN ON VOLTAGE, E
TO
(V)
TURN ON RESPONSE
0
LOAD 1.8A
3.3V
AUDIO REJECTION, A
V
(dB)
AUDIO REJECTION
V
IN
= 28V
I
OUT
= 2.0A
–20
–40
–60
–80
24
V
OUT
0V
28V
20
16
12
10K
20K 30K 40K 60K 90K
SET POINT RESISTOR, R
SP
(Ω)
0V V
IN
INCLUDES 100µF ON
OUTPUT BUS
TIME, t (5msec/DIV)
–100
100 200 400 1K 2K 4K 10K 20K 40K 100K
FREQUENCY, f (Hz)
7
Rev. G 8/06
MSK [ M.S. KENNEDY CORPORATION ]
