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TPS2346
 
SLUS529  MAY 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 TTL/CMOS-compatible
ENABLE
 input and the board power good signal (PG
) can interface directly to the individual backplane slot
control and status signals. A precharge pin (PRECHG) provides a 1-V bias supply for the I/O signals.
absolute maximum ratings over operating free-air temperature (unless otherwise noted)
 
Input voltage range,  VIN1, VIN2, VIN3, ENABLE
, PG
, PRECHG
0.3 V to 15 V
. . . . . . . . . . . . . . . . . . . . . . . . .
VS1, VS2, VS3, CS1, CS2, CS3
0.3 V to V
IN
 +0.3 V of corresponding channel
. . . . .
CPUMP, GATE1, GATE2, GATE3
0.3 V to 25 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
VIN4, VS4, GATE4, CS4
15 V to 0.3 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
IRAMP
0.3 V to V
I(VIN1)
 +0.3 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating junction temperature range, T
J
55癈 to 150癈
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Storage temperature range, T
stg
65癈 to 150癈
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Lead temperature soldering 1,6 mm (1/16 inch) from case for 10 seconds
300癈
. . . . . . . . . . . . . . . . . . . . . . . .
 
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
PACKAGED DEVICES
T
A
TSSOP (PW)
40_C to 85_C
TPS2346PW
{The PW package is available taped and reeled. Add TR suffix to device type
(e.g. TPS2346PWTR) to order quantities of 2,000 devices per reel and 90
units per tube.
1
2
3
4
5
6
7
8
9
10
11
12
24
23
22
21
20
19
18
17
16
15
14
13
GATE1
VS1
VIN1
CS1
IRAMP
ENABLE
RGND
PRECHG
CS3
VIN3
VS3
GATE3
GATE2
VS2
VIN2
CS2
CPUMP
CPGND
AGND
PG
CS4
VIN4
VS4
GATE4
PW PACKAGE
(TOP VIEW)
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