ADP170 Analog Devices, Inc., ADP170 Datasheet - Page 15
ADP170
Manufacturer Part Number
ADP170
Description
300 Ma, Low Quiescent Current, Cmos Linear Regulators
Manufacturer
Analog Devices, Inc.
Datasheet
1.ADP170.pdf
(20 pages)
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140
120
100
140
120
100
140
120
100
80
60
40
20
80
60
40
20
80
60
40
20
0
0
0
0.5
0.5
0.5
Figure 36. 500 mm
Figure 37. 100 mm
Figure 35. 0 mm
I
LOAD
I
LOAD
1.0
1.0
1.0
I
= 300mA
LOAD
T
T
I
LOAD
J
T
J
= 300mA
J
MAX
MAX
MAX
= 1mA
= 1mA
I
LOAD
2
1.5
1.5
1.5
of PCB Copper, T
2
2
V
V
I
V
LOAD
of PCB Copper, T
of PCB Copper, T
IN
OUT
OUT
I
= 1mA
LOAD
– V
– V
– V
I
= 25mA
LOAD
OUT
I
IN
IN
= 150mA
LOAD
(V)
(V)
(V)
2.0
2.0
2.0
= 300mA
I
I
LOAD
LOAD
= 10mA
I
LOAD
A
I
= 150mA
LOAD
= 25mA
I
A
A
= 25°C
I
I
LOAD
LOAD
LOAD
I
= 50°C
= 50°C
LOAD
I
= 10mA
LOAD
2.5
2.5
= 10mA
2.5
= 25mA
= 150mA
= 100mA
= 100mA
= 100mA
3.0
3.0
3.0
Rev. 0 | Page 15 of 20
In cases where board temperature is known, use the thermal
characterization parameter, Ψ
perature rise (see Figure 39). Maximum junction temperature
(T
dissipation (P
The typical value of Ψ
J
) is calculated from the board temperature (T
T
J
140
120
100
= T
140
120
100
80
60
40
20
80
60
40
20
0
0
0.5
0.4
B
I
+ (P
LOAD
D
I
I
I
I
LOAD
LOAD
LOAD
LOAD
Figure 38. 0 mm
) using the following formula:
D
= 300mA
0.8
× Ψ
= 1mA
= 10mA
= 50mA
= 100mA
1.0
JB
Figure 39. TSOT, T
T
JB
J
is 42.8°C/W for the 5-lead TSOT package.
)
MAX
1.2
I
LOAD
2
1.5
I
I
I
T
of PCB Copper, T
V
LOAD
LOAD
LOAD
V
J
JB
OUT
IN
I
MAX
, to estimate the junction tem-
LOAD
= 1mA
– V
1.6
= 150mA
= 250mA
= 300mA
– V
OUT
= 150mA
IN
A
= 85°C
(V)
(V)
ADP170/ADP171
2.0
2.0
I
LOAD
A
I
LOAD
= 50°C
I
LOAD
= 100mA
2.5
= 25mA
B
= 10mA
) and power
2.4
3.0
2.8
(5)