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TPS40001 Datasheet

  • TPS40001

  • 低輸入電壓模式同步降壓控制器

  • 25頁(yè)

  • TI

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SLUS507C 鈭?JANUARY 2002 鈭?REVISED JUNE 2004
TPS40000, TPS40001
TPS40002, TPS40003
TPS40004, TPS40005
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
PACKAGED DEVICES MSOP
(2)
(DGQ)
APPLICATION
TA
鈭?0擄C to 85擄C
(2)
(3)
FREQUENCY
300 kHz
600 kHz
SOURCE
ONLY
TPS40000DGQ
TPS40002DGQ
SOURCE/SINK
WITH PREBIAS
(3)
TPS40001DGQ
TPS40003DGQ
SOURCE/SINK
(3)
TPS40004DGQ
TPS40005DGQ
The DGQ package is available taped and reeled. Add R suffix to device type (e.g.
TPS40000DGQR) to order quantities of 2,500 devices per reel and 80 units per tube.
See Application Information section, p. 8.
ABSOLUTE MAXIMUM RATINGS
over operating free-air temperature range unless otherwise noted(1)
TPS4000x
BOOT
COMP, FB, ILIM, SS/SD
Input voltage range, VIN
SW
SWT (SW transient < 50 ns)
VDD
Operating junction temperature range, TJ
Storage temperature, Tstg
VSW + 6.5
鈭?.3 to 6
鈭?.7 to 10.5
鈭?.5
6
鈭?0 to 150
鈭?5 to 150
擄C
C
V
UNIT
Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds
260
(1) Stresses beyond those listed under 鈥渁bsolute maximum ratings鈥?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 鈥渞ecommended operating conditions鈥?/div>
is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
DGQ PACKAGE
(4).(5
)
(TOP VIEW)
ILIM
FB
COMP
SS/SD
GND
1
2
3
4
5
10
9
8
7
6
BOOT
HDRV
SW
VDD
LDRV
ACTUAL SIZE
3,05mm x 4,98mm
(4)
(5)
See technical brief SLMA002 for PCB guidelines for PowerPAD packages.
PowerPADt heat slug can be connected to GND (pin 5).
2
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