Datasheet

LP3991
SNVS296H –DECEMBER 2006–REVISED MAY 2013 www.ti.com
MAXIMUM SUPPLY VOLTAGE AND THERMAL CONSIDERATIONS
Maximum recommended input voltage is 3.6V. The device may be operated at 4.0V V
IN
if proper care is given to
the board design in regard to thermal dissipation. As a guide please refer to the following table for ambient
temperature at 2 input voltages and 2 load currents for the example board types.
θ
JA
V
IN
V
OUT
I
OUT
P
D
Ambient Temp.
88ºC/W 3.6V 2.8V 160mA 0.130W 113ºC
250mA 0.200W 107ºC
4.0V 2.8V 160mA 0.190W 108ºC
250mA 0.300W 98ºC
160ºC/W 3.6V 2.8V 160mA 0.130W 104ºC
250mA 0.200W 93ºC
4.0V 2.8V 160mA 0.190W 94ºC
250mA 0.300W 77ºC
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