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3-TERMINAL ADJUSTABLE REGULATOR
SLVS044R – SEPTEMBER 1997 – REVISED APRIL 2007
Recommended Operating Conditions
MIN
V
I
– V
O
I
O
T
J
Input-to-output differential voltage
Output current
Operating virtual junction temperature
0
3
MAX
40
1.5
125
UNIT
V
A
°C
Electrical Characteristics
over recommended ranges of operating virtual junction temperature (unless otherwise noted)
PARAMETER
Line regulation
(2)
V
I
– V
O
= 3 V to 40 V
C
ADJ
= 10
µF,
(3)
T
J
= 25°C
T
J
= 0°C to 125°C
Thermal regulation
ADJUST terminal current
Change in
ADJUST terminal current
Reference voltage
Output-voltage
temperature stability
Minimum load current
to maintain regulation
Maximum output current
V
I
– V
O
= 2.5 V to 40 V, P
D
≤
20 W, I
O
= 10 mA to 1500 mA
V
I
– V
O
= 3 V to 40 V, P
D
≤
20 W, I
O
= 10 mA to 1500 mA
T
J
= 0°C to 125°C
V
I
– V
O
= 40 V
V
I
– V
O
≤
15 V,
V
I
– V
O
≤
40 V,
P
D
< P
MAX (4)
P
D
< P
MAX
T
J
= 25°C
f = 120 Hz
C
ADJ
= 0
µF
(3)
C
ADJ
= 10
µF
(3)
62
(4)
,
TEST CONDITIONS
(1)
T
J
= 25°C
T
J
= 0°C to 125°C
V
O
≤
5 V
V
O
≥
5 V
V
O
≤
5 V
V
O
≥
5 V
MIN
TYP
0.01
0.02
0.1
20
0.3
0.03
50
0.2
MAX
0.04
0.07
25
0.5
70
1.5
0.07
100
5
1.3
UNIT
%/V
mV
%V
O
mV
%V
O
%V
O
/W
µA
µA
V
%V
O
Load regulation
I
O
= 10 mA to 1500 mA
20-ms pulse,
T
J
= 25°C
1.2
1.25
0.7
3.5
10
mA
A
%V
O
dB
1.5
T
J
= 25°C
0.15
2.2
0.4
0.003
57
64
0.3
1
RMS output noise voltage
f = 10 Hz to 10 kHz,
(% of V
O
)
Ripple rejection
Long-term stability
(1)
(2)
(3)
(4)
V
O
= 10 V,
T
J
= 25°C
%/1k hr
Unless otherwise noted, the following test conditions apply: |V
I
– V
O
| = 5 V and I
OMAX
= 1.5 A, T
J
= 0°C to 125°C. Pulse testing
techniques are used to maintain the junction temperature as close to the ambient temperature as possible.
Line regulation is expressed here as the percentage change in output voltage per 1-V change at the input.
C
ADJ
is connected between the ADJUST terminal and GND.
Maximum power dissipation is a function of T
J
(max),
θ
JA
, and T
A
. The maximum allowable power dissipation at any allowable ambient
temperature is P
D
= (T
J
(max) – T
A
)/θ
JA
. Operating at the absolute maximum T
J
of 150°C can affect reliability.
3
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