LP3875ET-ADJ/NOPB National Semiconductor, LP3875ET-ADJ/NOPB Datasheet - Page 12

• Manufacturer Part Number: LP3875ET-ADJ/NOPB
• Description: IC REG LDO 1.5A ADJ VOLT TO220-5
• Manufacturer: National Semiconductor

Specifications of LP3875ET-ADJ/NOPB

• Regulator Topology: Positive Adjustable
• Voltage - Output: Adjustable
• Voltage - Input: 2.5 ~ 7 V
• Voltage - Dropout (typical): 0.38V @ 1.5A
• Number Of Regulators: 1
• Current - Output: 1.5A (Max)
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Through Hole
• Package / Case: TO-220-5 (Bent and Staggered Leads)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Current - Limit (min): -
• Other names: *LP3875ET-ADJ; *LP3875ET-ADJ/NOPB; LP3875ET-ADJ

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Application Hints
HEATSINKING SOT223-5 PACKAGE
Figure 3 shows a curve for the θ
different copper area sizes, using a typical PCB with 1 ounce
copper and no solder mask over the copper area for heat
sinking.
FIGURE 3. θ
FIGURE 2. Maximum power dissipation vs ambient
temperature for TO-263 package
JA
vs Copper(1 Ounce) Area for SOT-223
package
(Continued)
JA
of SOT-223 package for
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The following figures show different layout scenarios for
SOT-223 package.
FIGURE 4. SCENARIO A, θ
FIGURE 5. SCENARIO B, θ
JA
JA
= 148˚C/W
= 125˚C/W
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