SM72485 Datasheet, PDF (4/16 Pages) National Semiconductor (TI) – SolarMagic 100V, 150 mA Constant On-Time Buck Switching Regulator

Symbol
Parameter
Minimum Off Time
Minimum Off Timer
Regulation and OV Comparators
FB Reference Threshold
FB Over-Voltage Threshold
FB Bias Current
Thermal Shutdown
Tsd
Thermal Shutdown Temp.
Thermal Shutdown Hysteresis
Thermal Resistance
θ_JA
Junction to Ambient
Conditions
FB = 0V
Internal reference
Trip point for switch ON
Trip point for switch OFF
SDC Package
MUA Package
Min
2.445
Typ
300
2.5
2.875
100
165
25
40
200
Max
2.550
Units
ns
V
V
nA
°C
°C
°C/W
Note 1: Absolute Maximum Ratings are limits beyond which damage to the device may occur. Operating Ratings are conditions under which operation of the
device is intended to be functional. For guaranteed specifications and test conditions, see the Electrical Characteristics.
Note 2: For detailed information on soldering plastic MSOP and LLP packages, refer to the Packaging Data Book available from National Semiconductor
Corporation.
Note 3: All limits are guaranteed. All electrical characteristics having room temperature limits are tested during production with T_A = T_J = 25°C. All hot and cold
limits are guaranteed by correlating the electrical characteristics to process and temperature variations and applying statistical process control.
Note 4: The V_CC output is intended as a self bias for the internal gate drive power and control circuits. Device thermal limitations limit external loading.
Note 5: The human body model is a 100pF capacitor discharged through a 1.5kΩ resistor into each pin. The ESD rating for pin 2, pin 7, and pin 8 is 1 kV for HBM
and 150V for MM.
Note 6: For devices procured in the LLP-8 package the Rds(on) limits are guaranteed by design characterization data only.
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