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参数资料
| 型号： | TPS2590RSA |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 电源管理 |
| 英文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PQCC16 |
| 封装： | 4 X 4 MM, PLASTIC, QFN-16 |
| 文件页数： | 12/18页 |
| 文件大小： | 1021K |
| 代理商： | TPS2590RSA |
www.ti.com
SLUS960B – JULY 2009 – REVISED AUGUST 2010
ELECTRICAL CHARACTERISTICS
over operating free-air temperature range (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
IN
UVLO
VIN ↑
2.6
2.85
2.9
V
Hysteresis
150
mV
Bias current
EN = 2.4 V
25
100
mA
EN = 0 V
3.9
5
mA
OUT
RVIN-VOUT, IVOUT < IRLIM or IVOUT < (ISET x 1.25), 1
RON
29.5
42.0
m
A
≤ IVOUT ≤ 4.5 A
Power limit
VIN: 12 V, COUT = 1000 mF, EN: 3 V → 0 V
3
5
7.5
W
Reverse diode voltage
VOUT > VIN , EN = 5 V, IIN = - 1 A
0.77
1.0
V
IFLT
IVOUT ↑, ICT: sinking → sourcing, pulsed test (RRFLT
0.8
1
1.2
= 200 k
)
IVOUT ↑, ICT: sinking → sourcing, pulsed test (RRFLT
IFLT
Fault current threshold
1.8
2
2.2
A
= 100 k
)
IVOUT ↑, ICT: sinking → sourcing, pulsed test (RRFLT
3.6
4
4.4
= 49.9 k
)
ILIM
RRLIM = 100 k
1.6
2
2.4
Current limit program IVOUT ,
RRLIM = 66.5 k
2.6
3
3.4
A
VVIN-VOUT = 0.3 V, pulsed test
RRLIM = 40.2 k
4.6
5
5.4
CT
ICT sourcing, VCT = 1 V
29
35
41
Charge/discharge current
mA
ICT sinking, VCT = 1 V
1.0
1.4
1.8
VCT ↑
1.3
1.4
1.5
Threshold voltage
V
VCT ↓
0.1
0.16
0.3
ON/OFF fault duty cycle
VVOUT = 0 V
2.8
3.7
4.6
%
Copyright 2009–2010, Texas Instruments Incorporated
3
Product Folder Link(s): TPS2590
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