POWER MANAGER. TPS2346 Datasheet

TPS2346 Datasheet PDF, Equivalent


Part Number

TPS2346

Description

OPTICAL NETWORK HOT SWAP POWER MANAGER

Manufacture

etcTI

Total Page 30 Pages
PDF Download
Download TPS2346 Datasheet PDF


TPS2346 Datasheet
TPS2346
OPTICAL NETWORK
HOT SWAP POWER MANAGER
SLUS529 – MAY 2002
FEATURES
D Enables Hot Swap in High Availability Optical
Network Systems
D Programmable Current Slew Rate
D Power Supply Sequencing
D Sense Resistors Set Peak Current (IMAX)
D Overcurrent Circuit Breaker at 2× IMAX
D Precharge Output
D Logic Low Power Good Output
D Logic Low Enable Input
D On-Chip Charge Pump
D Low Sleep Mode Current
D Undervoltage Lockout (UVLO)
D Minimal External Parts Count
D 24-pin TSSOP Package
TYPICAL APPLICATION
DESCRIPTION
The TPS2346 Optical Network Hot Swap Power
Manager (HSPM) provides highly-integrated supply
control of three positive (3.3-V, 5-V, and 5.15-V) and one
negative (–5.2-V) supply rails with a minimum number
of external components. A linear current amplifier (LCA)
in each of the four device channels provides
closed-loop control of load current during insertion and
extraction events. This allows the designer to configure
the plug-in card’s maximum inrush slew rate and
magnitude according to the requirements of the system
supplies.
APPLICATIONS
D Hot Swap of ONET Modules
D Supply Power-Up/Power-Down Sequencing
5.15V
5V
ENABLE
PG
GND
3.3 V
–5.2 V
AD[00]
AD[XX:01]
R1 Q1
PLUG–IN MODULE
3 m
R2
2 m
Q2
R6 R7
10 k1.2 k
C1
0.1 µF
C2
0.39 µF
D2 6.8 V
D1
6.8 V
VIN1
CS1 GATE1 VS1
VIN2
ENABLE
PG
RGND
TPS2346
IRAMP
PRECHG
VIN4
CS4 GATE4 VS4 VIN3
CS2
GATE2
VS2
CPUMP
AGND
CPGND
VS3
GATE3
CS3
5.15 V
5V
C3
0.1 µF
R8
10
R4
0.2
R5
10 k
Q4
R3
2 m
RP BRIDGE DEVICE
EXAMPLE SIGNAL LINE AD[00]
Q3
3.3 V
–5.2 V
ADDRESS/DATA BUS
AD[XX:01]
UDG–02080
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
www.ti.com
Copyright 2002, Texas Instruments Incorporated
1

TPS2346 Datasheet
TPS2346
SLUS529 MAY 2002
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 VIN +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 VI(VIN1) +0.3 V
Operating junction temperature range, TJ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55°C to 150°C
Storage temperature range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 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 ratingsmay 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 conditionsis 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
TA
40_C to 85_C
PACKAGED DEVICES
TSSOP (PW)
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.
PW PACKAGE
(TOP VIEW)
GATE1
VS1
VIN1
CS1
IRAMP
ENABLE
RGND
PRECHG
CS3
VIN3
VS3
GATE3
1
2
3
4
5
6
7
8
9
10
11
12
24 GATE2
23 VS2
22 VIN2
21 CS2
20 CPUMP
19 CPGND
18 AGND
17 PG
16 CS4
15 VIN4
14 VS4
13 GATE4
2 www.ti.com


Features Datasheet pdf TPS2346 OPTICAL NETWORK HOT SWAP POWER MANAGER SLUS529 – MAY 2002 FEATURES D Enables Hot Swap in High Availabilit y Optical Network Systems D Programmabl e Current Slew Rate D Power Supply Sequ encing D Sense Resistors Set Peak Curre nt (IMAX) D Overcurrent Circuit Breaker at 2× IMAX D Precharge Output D Logic Low Power Good Output D Logic Low Enab le Input D On-Chip Charge Pump D Low Sl eep Mode Current D Undervoltage Lockout (UVLO) D Minimal External Parts Count D 24-pin TSSOP Package TYPICAL APPLICAT ION DESCRIPTION The TPS2346 Optical Ne twork Hot Swap Power Manager (HSPM) pro vides highly-integrated supply control of three positive (3.3-V, 5-V, and 5.15 -V) and one negative (–5.2-V) supply rails with a minimum number of external components. A linear current amplifier (LCA) in each of the four device chann els provides closed-loop control of loa d current during insertion and extracti on events. This allows the designer to configure the plug-in card’s maximum inrush slew rate and magnitude .
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