MCP1825S-1802E/EB Microchip Technology, MCP1825S-1802E/EB Datasheet - Page 22
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MCP1825S-1802E/EB
Manufacturer Part Number
MCP1825S-1802E/EB
Description
500 MA CMOS LDO, Vout=1.8V, Extended Temp Range 3 DDPAK TUBE
Manufacturer
Microchip Technology
Datasheet
1.MCP1825T-ADJEDC.pdf
(38 pages)
Specifications of MCP1825S-1802E/EB
Regulator Topology
Positive Fixed
Voltage - Output
1.8V
Voltage - Input
2.1 ~ 6 V
Voltage - Dropout (typical)
0.21V @ 500mA
Number Of Regulators
1
Current - Output
500mA (Min)
Operating Temperature
-40°C ~ 125°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
Current - Limit (min)
-
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
MCP1825/MCP1825S
5.3.1.2
To estimate the internal junction temperature, the
calculated temperature rise is added to the ambient or
offset temperature. For this example, the worst-case
junction temperature is estimated below:
5.3.1.3
From this table, you can see the difference in maximum
allowable power dissipation between the TO-220-5
package and the DDPAK-5 package.
DS22056B-page 22
TO-220-5 (29.3°C/W Rθ
DDPAK-5 (31.2°C/Watt Rθ
P
P
P
P
D(MAX)
D(MAX)
D(MAX)
D(MAX)
T
T
T
J
J
J
Junction Temperature Estimate
Maximum Package Power
Dissipation at 60°C Ambient
Temperature
= T
= 15.06°C + 60.0°C
= 75.06°C
= (125°C – 60°C) / 29.3°C/W
= 2.218W
= (125°C – 60°C)/ 31.2°C/W
= 2.083W
JRISE
+ T
JA
A(MAX)
):
JA
):
© 2008 Microchip Technology Inc.