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参数资料
| 型号： | TPS2540RTET |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 电源管理 |
| 英文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PQCC16 |
| 封装： | GREEN, PLASTIC, WQFN-16 |
| 文件页数： | 32/37页 |
| 文件大小： | 999K |
| 代理商： | TPS2540RTET |
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SLVSAG2A
– OCTOBER 2010 – REVISED APRIL 2011
ELECTRICAL CHARACTERISTICS
Conditions are -40
≤ TJ ≤ 125°C unless otherwise noted. VEN (if TPS2540 or TPS2540A) = VDSC (if TPS2541) = VIN = 5 V,
RFAULT = 10 kΩ, RILIM0 = 210 kΩ, RILIM1 = 20 kΩ, ILIM_SEL = 0 V, CTL1 = CTL2 = GND, CTL3 = VIN (TPS2540/40A) or CTL3 =
GND (TPS2541), 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(1)
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
RDS(on)
m
Ω
on-state resistance (1)
-40
°C ≤ TA = TJ ≤ 85°C, IOUT = 2 A, VILIM_SEL = Logic HI
73
105
TA = TJ = 25°C, IOUT = 2 A, VILIM_SEL = Logic HI
73
84
tr
Rise time, output
CL = 1 F, RL = 100 Ω, (see Figure 2)
1
1.5
ms
tf
Fall time, output
CL = 1 F, RL = 100 Ω, (see Figure 2)
0.2
0.5
OUT discharge
RDIS
400
500
630
Ω
resistance
IREV
Reverse leakage current
VOUT = 5.5 V, VIN = VEN = 0 V , TJ = 25°C
0
1
A
Enable Input EN (TPS2540/40A), Output Discharge Input DSC (TPS2541)
Enable pin turn on/off
VEN
0.9
1.1
1.65
V
threshold, falling
VEN_HYS
EN Hysteresis
200
mV
IEN
Input current
VEN = 0 V or 5.5 V
-0.5
0.5
A
DSC pin turn on/off
VDSC
0.9
1.1
1.65
V
threshold, falling
VDSC_HYS
DSC Hysteresis
200
mV
IDSC
Input current
VDSC = 0 V or 5.5 V
-0.5
0.5
A
tON
Turn-on time
3.4
5
ms
tOFF
Turn-off time
1.7
3
Current Limit
ILIM_SEL turn on/off
VILIM_SEL
0.9
1.1
1.65
V
threshold, falling
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
RILIM1 = 20 kΩ
2150
2430
2650
Maximum DC output
ISHORT
VILIM_SEL = Logic HI
mA
current from IN to OUT
RILIM1 = 16.9 kΩ
2550
2840
3100
RILIM0 = 698 kΩ
VILIM_SEL = Logic LO
25
55
85
-40
≤ TJ ≤ 85°C
Response time to
tIOS
1.5
s
short-circuit
Supply Current
Supply current, switch
ICCL
VEN = VDSC = 0 V, OUT grounded, -40 ≤ TJ ≤ 85°C
0.1
2
disabled
VILIM_SEL = Logic
A
150
185
HI
ICCH
Supply current, operating
VEN = VDSC = VIN,
130
170
(1)
Pulse-testing techniques maintain junction temperature close to ambient temperature; thermal effects must be taken into account
separately.
4
Copyright
2010–2011, Texas Instruments Incorporated
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