Datasheet

SM72485
www.ti.com SNVS697D –JANUARY 2011–REVISED APRIL 2013
These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam
during storage or handling to prevent electrostatic damage to the MOS gates.
Absolute Maximum Ratings
(1)(2)
V
IN
to GND -0.3V to 100V
BST to GND -0.3V to 114V
SW to GND (Steady State) -1V
ESD Rating
(3)
Human Body Model 2kV
BST to V
CC
100V
BST to SW 14V
V
CC
to GND 14V
All Other Inputs to GND -0.3 to 7V
Lead Temperature (Soldering 4 sec)
(4)
260°C
Storage Temperature Range -55°C to +150°C
(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 ensured specifications and test conditions, see the Electrical Characteristics.
(2) If Military/Aerospace specified devices are required, please contact the TI Sales Office/ Distributors for availability and specifications.
(3) 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.
(4) For detailed information on soldering plastic VSSOP and WSON packages, refer to http://www.ti.com/lit/SNOA549.
Operating Ratings
(1)
V
IN
6V to 95V
Operating Junction Temperature −40°C to + 125°C
(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 ensured specifications and test conditions, see the Electrical Characteristics.
Electrical Characteristics
Specifications with standard typeface are for T
J
= 25°C, and those with boldface type apply over full Operating Junction
Temperature range. V
IN
= 48V, unless otherwise stated
(1)
.
Symbol Parameter Conditions Min Typ Max Units
VCC Supply
Vcc Reg Vcc Regulator Output Vin = 48V 6.6 7 7.4 V
Vin – Vcc 6V < Vin < 8.5V 100 mV
Vcc Bypass Threshold Vin Increasing 8.5 V
Vcc Bypass Hysteresis 300 mV
Vcc Output Impedance Vin =6V 100 Ω
Vin = 10V 8.8 Ω
Vin = 48V 0.8 Ω
Vcc Current Limit Vin = 48V 9.2 mA
Vcc UVLO Vcc Increasing 5.3 V
Vcc UVLO hysteresis 190 mV
Vcc UVLO filter delay 3 µs
Iin Operating current FB = 3V, Vin = 48V 550 750 µA
Iin Shutdown Current RT/SD = 0V 110 176 µA
Switch Characteristics
Buckswitch Rds(on) Itest = 200 mA 2.2 4.6 Ω
Gate Drive UVLO Vbst – Vsw Rising 2.8 3.8 4.8 V
Gate Drive UVLO hysteresis 490 mV
(1) All limits are ensured. All electrical characteristics having room temperature limits are tested during production with T
A
= T
J
= 25°C. All
hot and cold limits are ensured by correlating the electrical characteristics to process and temperature variations and applying statistical
process control.
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