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参数资料
| 型号： | TPS2554DRCT |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 电源管理 |
| 英文描述： | POWER SUPPLY SUPPORT CKT, PDSO10 |
| 封装： | PLASTIC, SON-10 |
| 文件页数： | 20/23页 |
| 文件大小： | 1035K |
| 代理商： | TPS2554DRCT |
Charge
Pump
Driver
Current
Limit
Thermal
Sense
UVLO
8-ms
Deglitch
IN
EN
OUT
ILIM_SEL
ILIM0
ILIM1
FAULT
GND
Current
Sense
(TPS2555)
(TPS2554)
2/3
5
8/9
4
7
6
10
1
RDIS
Charge
Pump
Driver
Current
Limit
Thermal
Sense
UVLO
8-ms
Deglitch
IN
EN
OUT
ILIM_SEL
ILIM0
ILIM1
FAULT
GND
Current
Sense
(TPS2555)
(TPS2554)
2/3
5
8/9
4
7
6
10
1
RDIS
SLVSAM0
– JUNE 2011
DEVICE INFORMATION
Pin Functions
PIN
I/O
DESCRIPTION
NAME
TPS2554
TPS2555
EN
5
-
I
Enable input, logic high turns on power switch (TPS2554).
EN
-
5
I
Enable input, logic low turns on power switch (TPS2555).
GND
1
Ground connection; connect externally to PowerPAD
.
2, 3
I
Input voltage; connect a 100-nF, or greater, ceramic capacitor
IN
from IN to GND as close to the device as possible.
10
19
O
Active-low, open-drain output, asserted during overcurrent or
FAULT
over-temperature conditions.
OUT
8, 9
O
Power-switch output
7
I
External resistor used to set current-limit threshold when
ILIM0
ILIM_SEL = LO
6
I
External resistor used to set current-limit threshold when
ILIM1
ILIM_SEL = HI
4
I
Logic-level input that selects between ILIM0 and ILIM1
ILIM_SEL
current-limit threshold setting
Internally connected to GND; used to heat-sink the device to the
PowerPAD
–
circuit board traces. Connect PowerPAD
to GND pin externally.
TPS2554/TPS2555 Functional Block Diagram
6
Copyright
2011, Texas Instruments Incorporated
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