Samsung RT40MA, Service Manual

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29
n
ELECTRICAL CHARACTERISTICS KA7812/I
(Refer to test circuit, T
MIN
<T
J
<T
MAX,
I
O
= 500mA, V
I
=19V, C
I
= 0.33
㎌
, C
O
= 0.1
㎌
, unless otherwise specified)
V
O
V
O
V
O
I
Q
I
Q
V
O
/ T
V
N
RR
V
O
R
O
I
SC
I
PK
T
J
= 25
℃
5.0mA ≤ 1.0A , P
D
≤ 15W
V
I
= 14.5V to 27V
V
I
= 15.5V to 27V
11.5
11.4
55
12
12
10
3.0
11
5.0
5.1
0.1
0.5
-1
76
71
2
18
230
2.2
12.5
12.6
240
120
240
120
8
0.5
1.0
11.5
11.4
55
12
12
10
3.0
11
5.0
5.1
0.1
0.5
-1
76
71
2
18
230
2.2
12.5
12.6
240
120
240
120
8
0.5
1.0
V
mV
mV
mA
mA
mV/
℃
㎶
dB
V
m
Ω
mA
A
T
J
= 25 ℃
I
O
= 5mA to 1.0A
V
I
= 14.5V to 30V
V
I
= 15V to 30V
I
O
= 5mA
f = 10Hz to 100KHz
,
T
A
=25
℃
f = 120Hz
V
I
= 15V to 25V
I
O
= 1A , T
J
= 25 ℃
f = 1KHz
V
I
= 35V , T
A
= 25 ℃
T
J
= 25
℃
T
J
= 25
℃
T
J
= 25 ℃
V
I
= 14.5 to 30V
V
I
= 16 to 22V
I
O
= 5mA to 1.5A
I
O
=250mA to 750mA
Characteristic Symbol Test Conditions
KA7812I KA7812I
Unit
Output Voltage
Line Regulation
Load Regulation
Quiescent Current
Quiescent Current Change
Output Voltage Drift
Output Noise Voltage
Ripple
Rejection
Dropout Voltage
Output Resistance
Short Circuit Current
Peak Current
T
MIN
T
J
T
MAX
KA78XXI : T
MIN
= -40 ℃, T
MAX
= 125 ℃
KA78XX
,
T
MIN
= 0
℃,
T
MAX
= 125
℃
Load and line regulation are specified at constant junction temperature.
Changes in V
O
due to heating effects must be taken into account separately.
Pulse testing with low duty is used.
Min Typ Max Min Typ Max