參數(shù)資料
型號(hào)： TPS2341PHPR
廠商： TEXAS INSTRUMENTS INC
元件分類： 電源管理
英文描述： 4-CHANNEL POWER SUPPLY SUPPORT CKT, PQFP48
封裝： POWERPAD, HTQFP-48
文件頁數(shù)： 26/31頁
文件大?。?/td> 649K
代理商： TPS2341PHPR
TPS2341
SLUS513A MAY 2003 REVISED JULY 2004
4
www.ti.com
electrical characteristics over recommended operating temperature range, P12VINA = P12VINB =
12 V, V5IN = 5 V, V3IN = 3.3 V, DIGVCC = 3.3 V, M12VINA = M12VINB = 12 V, 3VSTBYIN = 3.3 V, all
outputs unloaded, 40
°C to 85°C, TA = TJ (unless otherwise noted) (continued)
input/output control
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
P12VINA, P12VINB supply current
PWRENx = LOW,
P12VIN = 12 V
2
mA
V5IN supply current
V5IN = 5 V
1
mA
V3IN supply current
V3IN = 3.3 V
1000
M12VINA, M12VINB supply current
PWRENx = LOW,
M12VIN 12 V
250
A
3VSTBYIN supply current
3VSTBYIN = 3.3 V
200
A
DIGVCC supply current
DIGVCC = 3.3 V
200
Overcurrent fault response time
500
960
ns
V3IN start-up threshold voltage
2.6
2.8
3.05
V3IN stop threshold voltage
2.35
2.55
2.80
V5IN start-up threshold voltage
4.1
4.4
4.65
V
V5IN stop threshold voltage
3.75
4.00
4.35
V
P12VIN start-up threshold voltage
10.1
10.8
11.3
P12VIN stop threshold voltage
9.5
10.0
11.0
3.3 VAUX
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
V3IN slow overcurrent shutdown
Load applied for > 1 ms,
TA = TJ = 25°C
0.7
1.0
1.3
A
V3IN slow overcurrent shutdown
Load applied for > 1 ms
0.6
1.0
1.4
A
V3IN slow overcurrent fault response time
0.3
1.0
2.0
ms
V3IN fast overcurrent shutdown
Load applied for < 100
s, TA = TJ = 25°C
1.15
1.5
1.85
A
V3IN fast overcurrent shutdown
Load applied for < 100
s
1.0
1.5
2.0
A
V3IN fast overcurrent fault response time
5
10
35
s
3VSTBYIN overcurrent shutdown
20
40
60
mA
3VSTBYIN overcurrent fault response time
10
25
50
s
V3IN to 3VAUXA, 3VAUXB main switch on-resistance
I3VAUXx = 500 mA
300
425
m
3VSTBYIN to 3VAUXA, 3VAUXB standby switch
on-resistance
I3VAUXx = 10 mA
10
20
3VSTBYIN undervoltage lockout
2.0
2.5
2.9
V
V3IN to 3VAUXA, 3VAUXB turn-on slew rate
5
V/ms
3VSTBYIN to 3VAUXA, 3VAUXB turn-on slew rate
0.1
V/ms
3VAUXA, 3VAUXB turn-on time from SWA/SWB
from SWx < 0.8 V,
C3VAUXx = 150 F
3
ms
3VAUXA, 3VAUXB turn-off time from SWA/SWB
from SWx > 2 V
2.5
ms
3VSTBYIN to V3IN crossover time
10
s
V3IN to 3VSTBYIN crossover time
100
s
3VSTBYIN to V3IN crossover threshold
2.8
2.9
3.0
V
3VSTBYIN to V3IN crossover hysteresis
50
mV
3VAUXA, 3VAUXB bleed current
3VAUXx = 3 V
150
A
ac switching characteristics
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
fMAX operating clock frequency
0
≤ TA ≤ 70°C
0
100
400
kHz
Recommended input rise and fall times
10% to 90% of DIGVCC
0.2
1
ns
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