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参数资料
| 型号： | TPS2394PWR |
| 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： | PLASTIC, TSSOP-14 |
| 文件页数： | 13/18页 |
| 文件大小： | 356K |
| 代理商： | TPS2394PWR |
SLVSAA9 – AUGUST 2010
www.ti.com
ELECTRICAL CHARACTERISTICS (continued)
SOURCE = -48 V, UV = 2.5 V, OV = 0.5 V, SENSE = 0 V, RAMP = 0 V, TA = 40°C to 85°C (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
RAMP GENERATOR
ISRC1
RAMP source current, slow turn-on rate
RAMP – SOURCE = 0.25 V
–800
–550
–300
nA
ISRC2
RAMP source current, normal rate
RAMP – SOURCE = 1 V and 3 V
–11.3
–10
–8.5
A
VOL
Low-level output voltage
UV = SOURCE
5
mV
AV
Voltage gain, relative to SENSE
0 V < RAMP – SOURCE < 5 V
9.5
10
10.7
mV/V
OVERLOAD COMPARATOR
VTH_OL
SENSE current overload threshold
100
120
140
mV
tRSP
Response time
SENSE – SOURCE = 200 mV
2
4
7
s
FAULT TIMER
VOL
FLTTIM low
level output voltage, to SOURCE
UV = –48 V
5
mV
ICHG
FLTTIM charging current, current limit mode
FLTTIM – SOURCE = 2 V
–54
–50
–41
A
VFLT
FLTTIM fault threshold voltage to SOURCE
3.75
4.00
4.25
V
VRST
Fault reset threshold to SOURCE
0.5
IDSG
FLTTIM Discharge current, retry mode
FLTTIM – SOURCE = 2 V
0.38
0.75
A
SENSE
SOURCE = 80 mV,
D
Output duty cycle during retry cycles
1%
1.5%
FLTTIM – SOURCE = 2 V
IRST
FLTTIM discharge current, timer reset mode
FLTTIM – SOURCE = 2 V, SENSE = V
1
mA
LOGIC OUTPUTS (FLT, PG)
IOHFLT
FLT high-level output leakage current
UV = –48 V, FLT – SOURCE = 80 V
–10
10
A
IOHPG
PG high-level output leakage current
UV = –45 V, PG – SOURCE = 80 V
–10
10
SENSE–SOURCE = 80 mV,
FLT ON resistance
50
80
FLTTIM–SOURCE = 5 V, I(FLT) = 1 mA
RDS(on)
PG ON resistance
UV = –48 V, IO(PG) = 1 mA
50
80
4
Copyright 2010, Texas Instruments Incorporated
Product Folder Link(s): TPS2394
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