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參數(shù)資料
| 型號： | TPS2343DDPG3 |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 電源管理 |
| 英文描述： | 6-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO80 |
| 封裝： | GREEN, PLASTIC, HTSSOP-80 |
| 文件頁數(shù)： | 40/42頁 |
| 文件大?。?/td> | 942K |
| 代理商： | TPS2343DDPG3 |
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TPS2343
SLUS644B FEBRUARY 2005 MAY 2005
7
www.ti.com
ELECTRICAL CHARACTERISTICS,
P12VIN = 12 V, DIGVCC = 3.3 V, M12VIN = 12 V, 3VAUXIN = 3.3 V, V5IN = 5 V, RMISET = 6.04 k
, all outputs
unloaded, TA = 40_C to 85_C, (unless otherwise noted) (1)(2)(3)
12-V Main Supply
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
12-V internal switch on resistance
TA = TJ = 25_C, P12VG > 18 V
0.18
0.30
12-V internal switch on resistance
TA = 40 _C to 85 _C, P12VG > 18 V
0.4
12-V overcurrent threshold
1.25
1.50
1.75
A
P12VIN supply current, outputs off
PWREN = low
1.8
3
mA
P12VG gate good threshold
17.5
19.0
20.5
V
P12VO fault threshold
After P12VG and 5V3VG good
9.75
10.15
10.45
V
P12VG gate charge current
PWREN = high
5
10
20
A
P12VG gate discharge resistance
0.1 V < VP12VG < 0.5V
1.5
4
15
Turn-on time
PWREN = high to P12VO = 11.4 V,
CP12VG = 22 nF
28
55
ms
Turn-on time
PWREN = high to P12VO = 11.4 V,
CP12VG = 0 nF
0.5
2.0
ms
Turn-off time
PWREN = low to P12VO low comparator
trip, CP12VG = 22 nF
1.5
3.5
s
P12VO bleed current
PWREN = low, P12VO = 12 V
8
20
mA
P12VO low comparator threshold
PWREN = low
0.075
0.100
0.150
V
P12VO turn-on slew rate
CP12VG = 0 pF, 10% to 90% measurement
2
V/ms
12-V Main Supply
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
12-V internal switch on-resistance
TA = TJ = 25_C, steady state
0.50
0.75
12-V internal switch on-resistance
TA = 40 _C to 85 _C, steady state
0.9
12-V overcurrent threshold
0.15
0.20
0.25
A
M12VIN supply current, outputs off
PWREN = low
1000
2000
A
M12VO turn-on slew rate(4)
CP12VG = 22 nF, 10% to 90% measurement
0.30
0.68
1.10
V/ms
Turn-on time
CP12VG = 22 nF, PWREN = high to M12VO =
10.4 V, RL = 120
12
18
37
ms
Turn-off time
PWREN = low to M12VO low comparator trip
1.5
3.5
s
M12VO bleed current
PWREN = low, M12VO = 12 V
8
20
mA
M12VO low comparator threshold
PWREN = low
0.075
0.100
0.150
V
NOTES: (1). All voltages are with respect to DIGGND unless otherwise stated.
(2) Currents are positive into and negative out of the specified terminal.
(3) When references to lines of individual slots are given without the slot identifier, the statement applies to lines on each slot.
(4) 12-V main supply turn on is controlled by the +12-V main supply turn on, so the –12-V main supply slew rate is a function of CP12VG.
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