Datasheet
TPS40195
SLUS720E –FEBRUARY 2007–REVISED JULY 2012
www.ti.com
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.
DESCRIPTION (CONTINUED)
The threshold is set with a single external resistor connected from ILIM to GND. Pulse-by-pulse limiting (to
prevent current runaway) is provided by sensing the voltage across the high-side MOSFET when it is on and
terminating the cycle when the voltage drop rises above a fixed threshold of 550 mV. When the controller senses
an output short circuit, both MOSFETs are turned off and a timeout period is observed before attempting to
restart. This provides limited power dissipation in the event of a sustained fault. Synchronization on this device is
bi-directional. Devices can be synchronized 180° out of phase to a chosen master TPS40195 running at a fixed
250 kHz or 500 kHz, or can be synchronized to an outside clock source anywhere in the 100 kHz to 600 kHz
range.
ORDERING INFORMATION
T
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PACKAGE QUANTITY PACKAGING
(1)
PART NUMBER
90 Tube TPS40195PW
Plastic 16-Pin TSSOP
(PW)
2000 Reel TPS40195PWR
-40°C to 85°C
250 Tape TPS40195RGYT
Plastic 16-Pin QFN
(RGY)
3000 Reel TPS40195RGYR
(1) For the most current package and ordering information, see the Package Option Addendum at the end of this document, or see the TI
website at www.ti.com.
DEVICE RATINGS
ABSOLUTE MAXIMUM RATINGS
over operating free-air temperature range unless otherwise noted
(1)
TPS40195 UNIT
VDD –0.3 to 22
SW –5 to 25
BOOT –0.3 to 30
Input voltage range HDRV –5 to 30 V
BOOT–SW, HDRV–SW (Differential from BOOT or HDRV to SW) –0.3 to 6
EN, FB, BP, LDRV, PGOOD, ILIM, SYNC, UVLO, SS_SEL, RT –0.3 to 6
COMP –0.3 to 3
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Operating junction temperature range –40 to 150
°C
T
stg
Storage temperature –55 to 150
(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.
RECOMMENDED OPERATING CONDITIONS
MIN NOM MAX UNIT
V
VDD
Input voltage 4.5 20 V
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Operating junction temperature -40 125 °C
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