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参数资料
型号： TPS2392PW
厂商： TEXAS INSTRUMENTS INC
元件分类： 电源管理
英文描述： 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO14
封装： GREEN, PLASTIC, TSSOP-14
文件页数： 28/33页
文件大小： 596K
代理商： TPS2392PW
TPS2392
TPS2393
SLUS536C AUGUST 2002 REVISED AUGUST 2004
www.ti.com
4
ELECTRICAL CHARACTERISTICS
VI(VIN) = 48 V with respect to RTN, VI(EN) = 2.8 V, VI(INSA) = 0 V, VI(INSB) = 0 V, VI(UVLO) = 2.5 V, VI(OVLO) = 0 V, VI(ISENS) = 0 V, all outputs
unloaded, TA = 40°C to 85°C (unless otherwise noted)(1)(2)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
INPUT SUPPLY
ICC1
Supply current, RTN
VI(RTN) = 48 V
1050
1500
A
ICC2
Supply current, RTN
VI(RTN) = 80 V
1350
1700
A
VUVLO_L Internal UVLO threshold, VIN rising
To GATE pull-up
19
16
13
V
VHYS
Internal UVLO hysteresis
200
mV
ENABLE INPUT (EN)
VTH
Threshold voltage, VIN rising
To GATE pull-up
1.3
1.4
1.5
V
ISRC_EN EN pin switched pull-up current
12
10
8
A
UNDERVOLTAGE/OVERVOLTAGE COMPARATORS
VTH_UV
Threshold voltage, VIN rising, UVLO
To GATE pull-up
1.36
1.40
1.44
V
ISRC_UV UVLO pin switched pull-up current
VI(UVLO) = 2.5 V
11.7
10.0
8.3
A
IIL
UVLO low-level input current
VI(UVLO) = 1 V
1
A
VTH_OV
Threshold voltage, VIN rising, OVLO
To GATE pull-up
1.36
1.40
1.44
V
ISRC_OV OLVO pin switched pull-up current
VI(OVLO) = 2.5 V
11.7
10.0
8.3
A
IIL
OVLO low-level input current
VI(OVLO) = 1 V
1
A
INSERTION DETECTION
VTH
Threshold voltage, VIN rising, INSA, INSB
To GATE pull-down
1.0
1.4
1.8
V
ISRC_INSx INSA, INSB pin pull-up current
VI(INSA) = 0 V, VI(INSB) = 0 V
14
11
8
A
tD_INS
Insertion delay time, VIN falling, INSA, INSB
To GATE pull-up
1.5
2.5
4.1
ms
LINEAR CURRENT AMPLIFIER (LCA)
VOH
High-level output voltage, GATE
VI(ISENS) = 0 V, IO(GATE) = 10 A
11
14
17
V
ISINK
Output sink current, linear mode
VI(ISENS) = 80 mV, VO(GATE) = 5 V
VO(FLTTIME) = 2 V
5
10
mA
IFAULT
Output sink current, fault shutdown
VI(ISENS) = 80 mV, VO(GATE) = 5 V
VO(FLTTIME) > 4 V
50
100
mA
II
Input current, ISENS
0 V < VI(ISENS) < 0.2 V
1
A
VREF_K
Reference clamp voltage
VO(IRAMP) = OPEN
33
40
47
mV
VIO
Input offset voltage
VO(IRAMP) = 2 V
7
mV
RAMP GENERATOR
ISRC1
IRAMP source current, reduced rate turn-on
VO(IRAMP) = 0.25 V
850
600
400
nA
ISRC2
IRAMP source current, normal rate
VO(IRAMP) = 1 V
11
10
9
A
ISRC2
IRAMP source current, normal rate
VO(IRAMP) = 3 V
11
10
9
A
VOL
Low-level output voltage, IRAMP
VI(EN) = 0 V
2
mV
AV
Voltage gain, relative to ISENS
9.5
10.0
10.5
mV/V
OVERLOAD COMPARATOR
VTH_OL
Current overload threshold, ISENS
80
100
120
mV
tDLY
Glitch filter delay time
VI(ISENS) = 200 mV
2
4
7
s
(1)
All voltages are with respect to the VIN terminal, unless otherwise stated.
(2)
Currents are positive into and negative out of the specified terminals.
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