TPS2345

SLUS503B – MARCH 2002 – REVISED AUGUST 2002

2

www.ti.com

description (continued)

Fully programmed sequencing control ramps the back-end plane voltages in order, and during shutdown from

a healthy state, turns off the back-end supplies in the reverse order. In addition, electronic circuit breakers

provide continuous protection for the system supplies during the plug-in operation. The control and status pins

can interface directly to the back-plane BD_SEL# and HEALTHY# signals. A precharge pin (PRECHG) provides

a 1-V bias supply for the I/O signals.

Input voltage range, VIN1, VIN2, VIN3, BD_SEL#, HEALTHY#, PRECHG

–0.3 V to 15 V

. . . . . . . . . . . . . . . .

VS1, VS2, VS3, CS1, CS2, CS3

. . . . .

CPUMP, GATE1, GATE2, GATE3

–0.3 V to 25 V

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

VIN4, VS4, GATE4, CS4

–15 V to 0.3 V

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

IRAMP

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

–55

°C to 150°C

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

–65

°C to 150°C

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Lead temperature soldering 1,6 mm (1/16 inch) from case for 10 seconds

300

°C

. . . . . . . . . . . . . . . . . . . . . . .

† 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. All voltages are with respect to GND.

Currents are positive into, and negative out of the specified terminal.

AVAILABLE OPTIONS

T

PACKAGED DEVICES

TA

TSSOP (PW)

–40

_C to 85_C

TPS2345PW

{The PW package is available taped and reeled. Add TR suffix to device type

(e.g. TPS2345PWTR) to order quantities of 2,000 devices per reel and 90

units per tube.

1

2

3

4

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6

7

8

9

10

11

12

24

23

22

21

20

19

18

17

16

15

14

13

GATE1

VS1

VIN1

CS1

IRAMP

BD_SEL#

RGND

PRECHG

CS3

VIN3

VS3

GATE3

GATE2

VS2

VIN2

CS2

CPUMP

CPGND

AGND

HEALTHY#

CS4

VIN4

VS4

GATE4

PW PACKAGE

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