Integrated Triple Supply Power Management Ic For Xilinx R Spartan Tm -3 Fpgas
Part No : TPS75003 pinout File Size : 113 KB Pages : 29 Pages
Other Part Numbers in this pdf fileTPS75003RHLTG4 TPS75003RHLT TPS75003RHLRG4 TPS75003RHLR |  How to draw an electrical schematic online find TPS75003 datasheet |
TPS75003
www.ti.com
SBVS052G – OCTOBER 2004 – REVISED JUNE 2007
DEVICE INFORMATION (continued)
RHL PACKAGE
4.5mm x 3.5mm QFN
(TOP VIEW)
DGND
AGND
SW1
EN1
SS3
SS1
IN1
13
IS1
12
11
DGND
OUT3
1
10
FB2
19
18
17
16
15
IN3
20
14
FB1
2
3
4
5
6
7
8
IN2
FB3
EN3
EN2
SS2
SW2
TERMINAL FUNCTIONS
TERMINAL
NAME
DGND
AGND
IN1
IN2
IN3
EN1
EN2
EN3
SS1
SS2
SS3
IS1
IS2
SW1
SW2
FB1
FB2
FB3
OUT3
RHL
6, 15, PAD
18
13
8
20
17
4
3
16
5
19
12
9
14
7
11
10
2
1
DESCRIPTION
Ground connection for BUCK1 and BUCK2 converters. Pins 6 and 15 should be connected to the back
side exposed pad by a short metal trace as shown in the
PCB Layout
section of this data sheet.
Ground connection for LDO.
Input supply to BUCK1.
Input supply to BUCK2.
Input supply to LDO.
Driving the enable pin (ENx) high turns on BUCK1 Regulator Driving this pin low puts it into shutdown
mode, reducing operating current. The enable pin does not trigger on fast negative going transients.
Same as EN1 but for BUCK2 controller.
Same as EN1 but for LDO.
Connecting a Capacitor between this pin and ground increases start-up time of the BUCK1 Regulator by
slowing the ramp-up of current limit. This high-impedance pin is noise-sensitive; careful layout is
important. See
Typical Characteristics, Applications
and
PCB Layout
sections for details.
Same as SS1 but for BUCK2 Regulator
Connecting a Capacitor from this pin to ground slows the start-up time of the LDO reference, therby
slowing output voltage ramp-up. See
Applications
section for details.
Current sense input for BUCK1 Regulator The voltage difference between this pin and IN1 is
compared to an internal reference to set current limit. For a robust output start-up ramp, careful layout
and bypassing are required. See
Applications
section for details.
Same as IS1 but compared to IN2 and used for BUCK2 controller.
Gate drive pin for external BUCK1 P-channel MOSFET.
Same as SW1 but for BUCK2 controller.
Feedback pin. Used to set the output voltage of BUCK1 Regulator
Same as FB1 but for BUCK2 controller.
Same as FB1 but for LDO.
Regulated LDO output. A small ceramic Capacitor (≥ 2.2μF) is needed from this pin to ground to
ensure stability.
6
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DGND
IS2
9