LP38511TS-1.8EV National Semiconductor, LP38511TS-1.8EV Datasheet - Page 2
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LP38511TS-1.8EV
Manufacturer Part Number
LP38511TS-1.8EV
Description
BOARD EVAL FOR LP38511TS-1.8
Manufacturer
National Semiconductor
Specifications of LP38511TS-1.8EV
Channels Per Ic
1 - Single
Voltage - Output
1.8V
Current - Output
800mA
Voltage - Input
2.25 ~ 5.5V
Regulator Type
Positive Fixed
Operating Temperature
-40°C ~ 125°C
Board Type
Fully Populated
Utilized Ic / Part
LP38511
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
www.national.com
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
LP38511TS evaluation board the θ
30°C/W.
Although there is only approximately 0.28 square inches of
copper area immediately under the tab, the top copper sur-
face area is extended to additional copper area on the bottom
of the board by nine thermal vias.
With the 30°C/W thermal rating the LP38511TS 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
FIGURE 4. ERROR Flag when Pull-Up is from V
rating is approximately
FIGURE 5. ERROR Flag when Pull-Up is from V
IN
= 2.5V,
2
FIGURE 3. Maximum Power Dissipation vs. Ambient
OUT
IN
Temperature
30028208
30028207
30028206