Datasheet

LM3495
www.ti.com SNVS410F –FEBRUARY 2006–REVISED APRIL 2013
Electrical Characteristics (continued)
Specifications with standard type are for T
J
= 25°C only; limits in boldface type apply over the full Operating Junction
Temperature (T
J
) range. Minimum and Maximum limits are specified through test, design, or statistical correlation. Typical
values represent the most likely parametric norm at T
J
= 25°C, and are provided for reference purposes only. Unless
otherwise indicated, V
IN
= 12V.
Symbol Parameter Conditions Min Typ
(1)
Max Units
I
SOURCE
COMP/SD Pin Source Current V
FB
= 0.5V, COMP/SD = 1.5V 40 µA
I
SINK
COMP/SD Pin Sink Current V
FB
= 0.7V, COMP/SD = 1.5V 40 µA
V
COMP-HI
COMP/SD Pin Voltage High Clamp V
FB
= 0.5V 2 V
V
COMP-LO
COMP/SD Pin Voltage Low Clamp V
FB
= 0.7V 0.9 V
TRACKING
V
TEND
Track End Threshold 0.6 V
V
TRACK-OS
Track to FB Offset TRACK = 0.55V 15 mV
INTERNAL VOLTAGE REGULATOR
V
IN
= 12V, VLIN5 Current = 25 mA 4.72 V
V
VLIN5
Voltage at VLIN5 Pin
(2)
V
IN
= 3.3V, VLIN5 Current = 25 mA 3.0 V
LOGIC INPUTS AND OUTPUTS
V
SD-HI
COMP/SD Pin Logic High Trip Point COMP/SD Pin Voltage Rising 0.3 0.4 V
V
SD-LO
COMP/SD Pin Logic Low Trip Point COMP/SD Pin Voltage Falling 0.2 0.26 V
THERMAL CHARACTERISTICS
Junction-to-Ambient Thermal
θ
JA
155 °C/W
Resistance
T
SD
Thermal Shutdown Threshold 150 °C
T
SD-HYS
Thermal Shutdown Hysteresis 15 °C
(2) VLIN5 provides self bias for the internal gate drive and control circuits. Device thermal limitations limit external loading.
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