TPS40007 Datasheet, PDF (2/23 Pages) Texas Instruments – LOW-INPUT HIGH-EFFICIEDCY SYNCHRONOUS BUCK CONTROLLER

TPS40007
TPS40009
SLUS589B− NOVEMBER 2003 − REVISED FEBRUARY 2005
DESCRIPTION (continued)
The current-limit threshold is adjustable with a single resistor connected to the device. The TPS4000x
controllers implement a closed-loop soft start function. Startup ramp time is set by a single external capacitor
connected to the SS/SD pin. The SS/SD pin is also used for shutdown.
ORDERING INFORMATION
TA
−40°C to 85°C
FREQUENCY
300 kHz
600 kHz
PACKAGED DEVICES MSOP⁽¹⁾ (DGQ)
TPS40007DGQ
TPS40009DGQ
(1) _{The DGQ package is available taped and reeled. Add R suffix to device type (e.g.}
TPS40007DGQR) to order quantities of 2,500 devices per reel and 80 units per tube.
ABSOLUTE MAXIMUM RATINGS
over operating free-air temperature range unless otherwise noted(2)
TPS4000x
UNIT
BOOT
COMP, FB, ILIM, SS/SD
VSW + 6.5
−0.3 to 6.5
Input voltage range, VIN
SW
SWT (SW transient < 50 ns)
VDD
−3 to 10.5
V
−5
6.5
Operating junction temperature range, TJ
−40 to 150
Storage temperature, Tstg
−55 to 150
°C
Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds
260
(2) _{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.
ILIM
FB
COMP
SS/SD
GND
DGQ PACKAGE⁽³⁾⁽⁴⁾
(TOP VIEW)
1
10
2
9
3
8
4
7
5
6
BOOT
HDRV
SW
VDD
LDRV
ACTUAL SIZE
3,05mm x 4,98mm
(3) _{See technical brief SLMA002 for PCB guidelines for PowerPAD packages.}
(4) _{PowerPADt heat slug should be connected to GND (pin 5).}
2
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