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參數(shù)資料
| 型號： | TPS2074 |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 電源管理 |
| 英文描述： | 4-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO24 |
| 封裝： | PLASTIC, SSOP-24 |
| 文件頁數(shù)： | 20/24頁 |
| 文件大?。?/td> | 389K |
| 代理商： | TPS2074 |
TPS2074, TPS2075
FOUR-PORT USB HUB POWER CONTROLLERS
SLVS288 – SEPTEMBER 2000
5
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
detailed description (continued)
OC1, OC2, OC3, OC4
OCx is an output signal that is asserted (active low) when an overcurrent or overtemperature condition is
encountered for the corresponding channel. OCx will remain asserted until the overcurrent or overtemperature
condition is removed.
EN1, EN2, EN3, EN4,
The active-low logic input ENx enables or disables the power switches in the device. The enable input is
compatible with both TTL and CMOS logic levels. The switches will not turn on until 3.3V_OUT is above the PG
threshold.
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
Input voltage range: VI(BP), VI(SP), VI(ENx), VI(BP_DIS)
–0.3 V to 6 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Output voltage range: VO(OUTx)
–0.3 V to 6 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
VO(3.3V_OUT), VO(PG_DLY), VO(OCx), VO(BPMODE),
VO(DP0_RST), VO(PG)
–0.3 V to VO (3.3V_OUT) 0.3 V
. . . . . . . . . . . . . . . . . . . . . . . . . . .
Continuous output current: IO(OUTx)
internally limited
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
IO(3.3V_OUT)
internally limited
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Maximum output current:
IO(BPMODE) or IO(BPMODE), IO(DP0_RST), IO(PG), IO(OCx)
±10 mA
. . . . . . . . . .
Continuous total power dissipation
See Dissipation Rating Table
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating virtual junction temperature range, TJ
–40
°C to 125°C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Storage temperature range, Tstg
–65
°C to 150°C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Lead temperature soldering 1,6 mm (1/16 inch) from case for 10 seconds
260
°C
. . . . . . . . . . . . . . . . . . . . . . .
Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and
functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not
implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
All voltages are with respect to GND.
DISSIPATION RATING TABLE
PACKAGE
TA ≤ 25°C
POWER RATING
DERATING FACTOR
ABOVE TA = 25°C
TA = 70°C
POWER RATING
TA = 85°C
POWER RATING
24 DB
889.7 mW
8.9 mW/
°C
489.3 mW
355.9 mW
recommended operating conditions
MIN
MAX
UNIT
VI(BP)
4.5
5.5
Input voltage
VI(SP)
0
5.5
V
Input voltage
VI(BP_DIS)
0
5.5
V
VI(ENx)
0
5.5
BP to OUTx (per switch)
100
Continuous output current, IO SP to OUTx (per switch)
500
mA
O
BP to 3.3V_OUT
100
Operating virtual junction temperature, TJ
-40
125
°C
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