參數(shù)資料
型號： TPS2346PWG4
廠商： TEXAS INSTRUMENTS INC
元件分類： 電源管理
英文描述： 4-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO24
封裝： GREEN, TSSOP-24
文件頁數(shù)： 26/30頁
文件大?。?/td> 490K
代理商： TPS2346PWG4
TPS2346
SLUS529 – MAY 2002
5
www.ti.com
electrical characteristics VI(VIN1) = 5.15 V, VI(VIN2) = 5 V, VI(VIN3) = 3.3 V, VI(VIN4) = –5.2 V,
TA = –40_C to 85_C (unless otherwise noted) (continued)
PG output
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
IOH
High–level output (leakage) current
VI(ENABLE) = 5 V,
VOH = 5 V
1
A
VOL
Low-level output voltage
VI(ENABLE) = 0 V,
ISINK = 0.1 mA
0.5
V
IOL
Low-level output (sink) current
VI(ENABLE) = 0 V,
VOL = 0.5 V
4
10
mA
Terminal Functions
TERMINAL
I/O
DESCRIPTION
NAME
NO.
I/O
DESCRIPTION
AGND
18
I
Analog ground
ENABLE
6
I
Logic low enable input for back-end power
CPGND
19
I
Charge pump ground
CPUMP
20
I/O
Charge pump resevoir capacitor connection
CS1
4
I
Channel 1 (5.15-V) current sense input
CS2
21
I
Channel 2 (5-V) current sense input
CS3
9
I
Channel 3 (3.3-V) current sense input
CS4
16
I
Channel 4 (–5.2-V) current sense input
GATE1
1
O
Gate drive for Channel 1 (5.15-V) external pass FET
GATE2
24
O
Gate drive for Channel 2 (5-V) external pass FET
GATE3
12
O
Gate drive for Channel 3 (3.3-V) external pass FET
GATE4
13
O
Gate drive for Channel 4 (–5.2-V) external pass FET
PG
17
O
Open drain output asserted low for back-end power good
IRAMP
5
O
Current ramp programming pin
PRECHG
8
O
Bias supply of 1V for bus signal precharge
RGND
7
I
Reference ground
VIN1
3
I
Channel 1 supply (5.15-V) input voltage sense
VIN2
22
I
Channel 2 supply (5-V) input voltage sense
VIN3
10
I
Channel 3 supply (3.3-V) input voltage sense
VIN4
15
I
Channel 4 supply (–5.2-V) input voltage sense
VS1
2
I
5.15-V supply back-end voltage sense
VS2
23
I
5-V supply back-end voltage sense
VS3
11
I
3.3-V supply back-end voltage sense
VS4
14
I
–5.2-V supply back-end voltage sense
DISSIPATION RATING TABLE
PACKAGE
TA 25_C
DERATING FACTOR
TA = 85_C
TSSOP (PW)
800 mW
10 mW/
_C
200 mW
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