Datasheet

LM3477
www.ti.com SNVS141K –OCTOBER 2000–REVISED MARCH 2013
Electrical Characteristics
(1)
(continued)
Specifications in Standard type face are for T
J
= 25°C, and in bold type face apply over the full Operating Temperature
Range. Unless otherwise specified, V
IN
= 12V.
Symbol Parameter Conditions Typical Limit Units
V
SD
Shutdown Threshold
(5)
Output = High 1.15 V
1.35 V (max)
Output = Low 0.65 V
0.3 V (min)
I
SD
Shutdown Pin Current V
SD
= 5V −1
µA
V
SD
= 0V +1
TSD Thermal Shutdown 165 °C
T
SH
Thermal Shutdown Hysteresis 10 °C
θ
JA
Thermal Resistance MM Package 200 °C/W
(5) The COMP/SD pin should be pulled to ground to turn the regulator off. The voltage on the COMP/SD pin must be below the limit for
Output = Low to keep the regulator off.
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