參數(shù)資料
型號： TPS2551DBVR
廠商： TEXAS INSTRUMENTS INC
元件分類： 電源管理
英文描述： 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO6
封裝： GREEN, PLASTIC, SOT-23, 6 PIN
文件頁數(shù)： 23/32頁
文件大?。?/td> 1402K
代理商： TPS2551DBVR
RECOMMENDED OPERATING CONDITIONS
ELECTRICAL CHARACTERISTICS
www.ti.com ........................................................................................................................................ SLVS736B – FEBRUARY 2008 – REVISED NOVEMBER 2008
MIN
MAX
UNIT
VIN
Input voltage, IN
2.5
6.5
V
VEN
TPS2550
0
6.5
Enable voltage
V
V/EN
TPS2551
0
6.5
IOUT
Continuous output current, OUT
0
1.1
A
RILIM
Current-limit set resistor from ILIM to GND
14.3
80.6
k
I/FAULT
FAULT sink current
0
10
mA
Operating virtual junction
TJ
DRV & DBV
–40
125
°C
temperature
over recommended operating junction temperature range, 2.5 V
≤ VIN ≤ 6.5 V, RILIM = 14.3 k, V/EN = 0 V, or VEN = 5.0 V
(unless otherwise noted)
PARAMETER
TEST CONDITIONS(1)
MIN
TYP
MAX
UNIT
POWER SWITCH
DBV package, TJ = 25 °C
85
95
DBV package, –40 °C
≤TJ ≤125 °C
135
rDS(on)
Static drain-source on-state resistance
DRV package, TJ = 25 °C
100
115
m
DRV package, –40 °C
≤TJ ≤105 °C
145
DRV package, –40 °C
≤TJ ≤125 °C
150
VIN = 6.5 V
1.0
1.5
tr
Rise time, output
VIN = 2.5 V
0.65
1.0
CL = 1 F, RL = 100 ,
ms
(see Figure 2)
VIN = 6.5 V
0.2
0.5
tf
Fall time, output
VIN = 2.5 V
0.2
0.5
ENABLE INPUT EN OR EN
VIH
High-level input voltage
1.1
V
VIL
Low-level input voltage
0.66
IEN
Input current
VEN = 0 V or 6.5 V, V/EN = 0 V or 6.5 V
–0.5
0.5
A
ton
Turnon time
3
ms
CL = 1 F, RL = 100 , (see Figure 2)
toff
Turnoff time
3
ms
CURRENT LIMIT
RILIM = 80.6 k
110
215
300
IOS
Short-circuit current, OUT connected to GND
RILIM = 38.3 k
300
500
650
RILIM = 15 k
1050
1400
1650
mA
RILIM = 80.6 k
290
315
340
IOC
Current-limit threshold (Maximum DC output current IOUT delivered to load)
RILIM = 38.3 k
620
665
705
RILIM = 15 k
1550
1650
1750
tIOS
Response time to short circuit
VIN = 5.0 V (see Figure 3)
2
s
REVERSE-VOLTAGE PROTECTION
Reverse-voltage comparator trip point
95
135
190
mV
(VOUT – VIN)
Time from reverse-voltage condition to
VIN = 5.0 V
3
5
7
ms
MOSFET turn off
SUPPLY CURRENT
VIN = 6.5 V, No load on OUT, VEN = 6.5 V or VEN = 0 V, 14.3 k
IIN_off
Supply current, low-level output
0.1
1
A
≤ RILIM ≤ 80.6 k
RILIM = 15 k
150
A
VIN = 6.5 V, No load on OUT, VEN = 0 V or
IIN_on
Supply current, high-level output
VEN = 6.5 V
RILIM = 80.6 k
130
A
IREV
Reverse leakage current
VOUT = 6.5 V, VIN = 0 V
TJ = 25 °C
0.01
1
A
(1)
Pulse-testing techniques maintain junction temperature close to ambient temperature; thermal effects must be taken into account
separately.
Copyright 2008, Texas Instruments Incorporated
3
Product Folder Link(s): TPS2550 TPS2551
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