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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： | 18/23页 |
| 文件大小： | 1035K |
| 代理商： | TPS2554DRCT |
SLVSAM0
– JUNE 2011
ELECTRICAL CHARACTERISTICS
Conditions are -40
°C ≤ TJ ≤ 125°C unless otherwise noted VEN (if TPS2554) = VIN = 5 V, VEN (if TPS2555) = 0 V, RFAULT = 10
k
Ω, RILIM0 = 210 kΩ, RILIM1 = 20 kΩ, ILIM_SEL = 0 V unless otherwise noted. Positive currents are into pins. Typical values
are at 25
°C. All voltages are with respect to GND unless otherwise noted.
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
Power Switch
IOUT = 2 A, VILIM_SEL = Logic HI
73
120
IOUT = 100 mA, VILIM_SEL = Logic LO
73
120
Static drain-source on-state
-40
°C ≤ TA = TJ ≤ 85 °C, IOUT = 2 A, VILIM_SEL
RDS(on)
m
Ω
73
105
resistance
= Logic HI
TA = TJ = 25 °C, IOUT = 2 A, VILIM_SEL = Logic
73
84
HI
tr
Rise time, output
CL = 1 F, RL = 100 Ω
1
1.5
ms
tf
Fall time, output
CL = 1 F, RL = 100 Ω
0.2
0.5
RDIS
OUT discharge resistance
400
500
630
Ω
VOUT = 5.5 V, VIN = VEN = 0 V or VOUT = VEN
IREV
Reverse leakage current
0
1
A
= 5.5 V, VIN = 0 V, TJ = 25 °C
Enable Input EN (TPS2554), Enable Input
EN (TPS2555)
VEN, VEN
EN, EN pin threshold, falling
0.9
1.1
1.65
V
VEN_HYS
EN, EN Hysteresis
200
mV
IEN, IEN
Input current
VEN, VEN = 0 V or 5.5 V
-0.5
0.5
A
tON
Turn-on time
CL = 1 F, RL = 100 Ω
3.4
5
ms
tOFF
Turn-off time
CL = 1 F, RL = 100 Ω
1.7
3
Current Limit
VILIM_SEL
ILIM_SEL threshold, falling
0.9
1.1
1.65
V
VILIM_HYS ILIM_SEL Hysteresis
200
mV
ILIM_SEL input current
VILIM_SEL = 0 V or 5.5 V
-0.5
0.5
A
RILIM0 = 210 kΩ
185
230
265
VILIM_SEL = Logic LO
RILIM0 = 100 kΩ
420
480
530
Maximum DC output current from
ISHORT
mA
IN to OUT
RILIM1 = 20 kΩ
2150
2430
2650
VILIM_SEL = Logic HI
RILIM1 = 16.9 kΩ
2550
2840
3100
tIOS
Response time to short circuit
VIN = 5.0 V
1.5
s
Supply Current
VEN = 0 V, VEN = VIN; OUT grounded; -40 °C ≤
ICCL
Supply current, switch disabled
0.1
3.8
TJ ≤ 85 °C
90
115
A
ICCH
Supply current, operating
VEN = 0 V, VEN = VIN
VILIM_SEL =
110
135
Logic HI
Undervoltage Lockout
VUVLO
Low-level input voltage, IN
VIN rising
3.9
4.1
4.3
V
Hysteresis, IN
100
mV
FAULT
Output low voltage, FAULT
IFAULT = 1 mA
100
mV
Off-state leakage
VFAULT = 5.5 V
1
A
FAULT assertion or negation due to
FAULT deglitch
5
8.5
12
ms
overcurrent condition
Thermal Shutdown
Thermal shutdown threshold
155
Thermal shutdown threshold in
135
°C
current-limit
Hysteresis
10
4
Copyright
2011, Texas Instruments Incorporated
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