Datasheet

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SLUS589B− NOVEMBER 2003 − REVISED FEBRUARY 2005
2
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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
T
A
FREQUENCY PACKAGED DEVICES MSOP
(1)
(DGQ)
−40°C to 85°C
300 kHz TPS40007DGQ
−40°C to 85°C
600 kHz 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 V
SW
+ 6.5
COMP, FB, ILIM, SS/SD −0.3 to 6.5
Input voltage range, V
IN
SW −3 to 10.5
V
Input voltage range, V
IN
SW
T
(SW transient < 50 ns) −5
V
VDD 6.5
Operating junction temperature range, T
J
−40 to 150
Storage temperature, T
stg
−55 to 150
°C
Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds 260
C
(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.
ACTUAL SIZE
3,05mm x 4,98mm
1
2
3
4
5
10
9
8
7
6
ILIM
FB
COMP
SS/SD
GND
BOOT
HDRV
SW
VDD
LDRV
DGQ PACKAGE
(3)(4)
(TOP VIEW)
(3)
See technical brief SLMA002 for PCB guidelines for PowerPAD packages.
(4)
PowerPADt heat slug should be connected to GND (pin 5).