Datasheet

DESCRIPTION (CONTINUED)
ABSOLUTE MAXIMUM RATINGS
RECOMMENDED OPERATING CONDITIONS
ELECTROSTATIC DISCHARGE (ESD) PROTECTION
TPS40077
SLUS714D – JANUARY 2007 – REVISED APRIL 2009 ..................................................................................................................................................... www.ti.com
The TPS40077 drives external N-channel MOSFETs using second-generation, predictive-gate drive to minimize
conduction in the body diode of the low-side FET and maximize efficiency. Pre-biased outputs are supported by
not allowing the low-side FET to turn on until the voltage commanded by the closed-loop soft start is greater than
the pre-bias voltage. Voltage feed-forward provides good response to input transients and provides a constant
PWM gain over a wide input-voltage operating range to ease compensation requirements. Programmable
short-circuit protection provides fault-current limiting and hiccup recovery to minimize power dissipation with a
shorted output. The 16-pin PowerPAD package gives good thermal performance and a compact footprint.
ORDERING INFORMATION
PACKAGE ORDERABLE PART NUMBER
Plastic HTSSOP (PWP) Tube TPS40077PWP
Plastic HTSSOP (PWP) Tape and reel TPS40077PWPR
over operating free-air temperature range unless otherwise noted
(1)
TPS40077 UNIT
VDD, ILIM 30
COMP, FB, KFF, PGD, LVBP – 0.3 to 6
V
VDD
Input voltage range V
SW – 0.3 to 40
SW, transient < 50 ns – 2.5
COMP, KFF, RT, SS – 0.3 to 6
VBOOST 50
V
OUT
Output voltage range V
DBP 10.5
LVBP 6
Output current source LDRV, HDRV 1.5
I
OUT
LDRV, HDRV 2 A
Output current sink
KFF 10
RT 1
Output current mA
LVBP 1.5
T
J
Operating junction temperature range – 40 to 125
T
stg
Storage temperature – 55 to 150 ° C
Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds 260
(1) Stresses beyond those listed under " absolute maximum ratings " may cause permanent damage to the device. These are stress ratings
only, and functional operation of the device at these or any other conditions beyond those indicated under " recommended operating
conditions " is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
MIN NOM MAX UNIT
V
DD
Input voltage 4.5 28 V
T
A
Operating free-air temperature – 40 85 ° C
UNIT
Human body model (HBM) 2000 V
Charged device model (CDM) 1500 V
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