LP38513S-1.8EV National Semiconductor, LP38513S-1.8EV Datasheet - Page 2

• Manufacturer Part Number: LP38513S-1.8EV
• Description: BOARD EVAL LP38513 1.8V
• Manufacturer: National Semiconductor

Specifications of LP38513S-1.8EV

• Channels Per Ic: 1 - Single
• Voltage - Output: 1.8V
• Current - Output: 3A
• Voltage - Input: 2.25 ~ 5.5V
• Regulator Type: Positive Fixed
• Operating Temperature: -40°C ~ 125°C
• Board Type: Fully Populated
• Utilized Ic / Part: LP38513
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

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1.25V the status of the ERROR flag output will not be reliable.
The ERROR Flag pin must be connected to ground if this
function is not used.
The timing diagram in Figure 4 shows the relationship be-
tween the ERROR flag and the output voltage when the pull-
up resistor is connected to the output voltage pin.
The timing diagram in Figure 5 shows the relationship be-
tween the ERROR flag and the output voltage when the pull-
up resistor is connected to the input voltage pin.
Power Dissipation
The TO-263 package alone has a junction to ambient thermal
resistance (θ
LP38513S evaluation board the θ
30°C/W.
Although there is only approximately 0.28 square inches of 1
ounce copper area immediately under the tab, the top copper
surface area is extended to an additional copper area, 1
square inch of 1 ounce copper, on the bottom of the board by
the use of nine thermal vias.
With the 30°C/W thermal rating the LP38513S-1.8 evaluation
board will deliver the rated 3A output current if V
V
OUT
= 1.8V, and T
JA
) rating of 60°C/W. When mounted on the
A
≤
25°C.
JA
rating is approximately
FIGURE 4. ERROR Flag when Pull-Up is from V
IN
= 2.5V,
2
FIGURE 3. Maximum Power Dissipation vs. Ambient
OUT
Temperature
20204606
20204608