SC1566IM-2.5TRT Semtech, SC1566IM-2.5TRT Datasheet - Page 8

• Manufacturer Part Number: SC1566IM-2.5TRT
• Description: IC LDO REG 2.5V 3A TO-263-3
• Manufacturer: Semtech

Specifications of SC1566IM-2.5TRT

• Regulator Topology: Positive Fixed
• Voltage - Output: 2.5V
• Voltage - Input: Up to 5.5V
• Voltage - Dropout (typical): 0.35V @ 3A
• Number Of Regulators: 1
• Current - Output: 3A
• Current - Limit (min): 3A
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: TO-263-3, D²Pak (3 leads + Tab), TO-263AA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: SC1566IM-2.5TR

Using this figure, and assuming T
calculate the maximum thermal impedance allowable to
maintain T
R
R
POWER MANAGEMENT
Applications Information (Cont.)
therefore
0.001
Co=2.2uF, Stable Region:
TH
TH
2005 Semtech Corp.
J (
J (
A
C
)(
)(
MAX
MAX
Unstable Region:
R
)
0.01
)
J
TH
(
3
S
150°C (see page 7):
T
A
ESR(Ohms)
( J
C
)(
MAX
MAX
/
P
W
0.1
)
D
)
(
MAX
and
T
33
A
)
(
MAX
R
C
TH
)
/
(
1
C
W
S
)
150
0.001
Co=220uF, Stable Region:
. 1
0
A(MAX)
81
C
10
85
3mA
30mA
300mA
3A
/
W
Figure 1. Phase-margin Contour Plot
= 85°C, we can
Unstable Region:
0.01
,
36
Load
ESR(Ohms)
C
/
W
0.1
8
This should be achievable for the TO-263 package using
pcb copper area to aid in conducting the heat away from
the device, such as a large (~2 squ. inch) pad connected
to the tab of the device. Internal ground/power planes
and air flow will also assist in removing heat. For higher
power dissipations it may be necessary to use a small
heatsink and the TO-220 package.
1
0.001
Co=22uF, Stable Region:
Unstable Region:
10
3mA
30mA
300mA
3A
0.01
Load
ESR(Ohms)
0.1
1
10
3mA
30mA
300mA
3A
SC1566
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Load