TPS54980 Datasheet, PDF (2/17 Pages) Texas Instruments – 3-V TO 4-V INPUT 9-A OUTPUT TRACKING SYNCHRONOUS BUCK PWM SWITCHER WITH INTEGRATED FETS FOR SEQUENCING

TPS54980
SLVS452A − FEBRUARY 2003 − REVISED FEBRUARY 2005
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.
ORDERING INFORMATION
TA
−40°C to 85°C
OUTPUT VOLTAGE
0.9 V to 2.5 V
PACKAGE
Plastic HTSSOP (PWP)(1)
PART NUMBER
TPS54980PWP
(1) _{The PWP package is also available taped and reeled. Add an R suffix to the device type (i.e., TPS54980PWPR). See the application section of}
the data sheet for PowerPAD drawing and layout information.
(2) _{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.
ABSOLUTE MAXIMUM RATINGS
over operating free-air temperature range unless otherwise noted(1)
TPS54980
UNIT
VIN
−0.3 V to 4.5 V
ENA
−0.3 V to 7 V
Input voltage range, VI
RT
VSENSE, TRACKIN
−0.3 V to 6 V
V
−0.3 V to 4V
BOOT
−0.3 V to 10 V
Output voltage range, VO
VBIAS, COMP, PWRGD
PH
−0.3 V to 7 V
V
−0.6 V to 6 V
Source current, IO
PH
COMP, VBIAS
Internally Limited
6
mA
PH
16
A
Sink current, IS
COMP
ENA, PWRGD
6
mA
10
Voltage differential
AGND to PGND
±0.3
V
Operating virtual junction temperature range, TJ
−40 to 125
°C
Storage temperature, Tstg
−65 to 150
°C
Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds
300
°C
(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
Input voltage, VI
Operating junction temperature, TJ
MIN NOM MAX UNIT
3
4V
−40
125 °C
DISSIPATION RATINGS⁽¹⁾⁽²⁾
PACKAGE
THERMAL IMPEDANCE
JUNCTION-TO-AMBIENT
TA = 25°C
TA = 70°C
TA = 85°C
POWER RATING POWER RATING POWER RATING
28 Pin PWP with solder
14.4 °C/W
6.94 W(3)
3.81 W
2.77 W
28 Pin PWP without solder
27.9 °C/W
3.58 W
(1) _{For more information on the PWP package, refer to TI technical brief, literature number SLMA002.}
(2) _{Test board conditions:}
1. 3” x 3”, 4 layers, thickness: 0.062”
2. 1.5 oz. copper traces located on the top of the PCB
3. 1.5 oz. copper ground plane on the bottom of the PCB
4. 0.5 oz. copper ground planes on the two internal layers
5. 12 thermal vias (see “Recommended Land Pattern” in applications section of this data sheet)
(3) _{Maximum power dissipation may be limited by over current protection.}
1.97 W
1.43 W
2