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| 型号： | TPS2051BDR |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 电源管理 |
| 英文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO8 |
| 封装： | GREEN, PLASTIC, MS-012AA, SOIC-8 |
| 文件页数： | 34/51页 |
| 文件大小： | 1451K |
| 代理商： | TPS2051BDR |
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SLVS514K – JUNE 2010 – REVISED DECEMBER 2008
www.ti.com
ELECTRICAL CHARACTERISTICS (continued)
over recommended operating junction temperature range, VI(IN) = 5.5 V, IO = 0.5 A, VI(/ENx) = 0 V (unless otherwise noted)
PARAMETER
TEST CONDITIONS(1)
MIN
TYP
MAX
UNIT
SUPPLY CURRENT (TPS2042B, TPS2052B)
TJ = 25°C
0.5
1
Supply current, low-level output
No load on OUT, VI(ENx) = 5.5 V
mA
-40°C
≤ TJ ≤ 125°C
0.5
5
TJ = 25°C
50
70
Supply current, high-level output
No load on OUT, VI(ENx) = 0 V
mA
-40°C
≤ TJ ≤ 125°C
50
90
Leakage current
OUT connected to ground, VI(ENx) = 5.5 V
-40°C
≤ TJ ≤ 125°C
1
mA
Reverse leakage current
VI(OUTx) = 5.5 V, IN = ground
(3)
TJ = 25°C
0.2
mA
SUPPLY CURRENT (TPS2043B, TPS2053B)
TJ = 25°C
0.5
2
Supply current, low-level output
No load on OUT, VI(ENx) = 0 V
mA
-40°C
≤ TJ ≤ 125°C
0.5
10
TJ = 25°C
65
90
Supply current, high-level output
No load on OUT, VI(ENx) = 5.5 V
mA
-40°C
≤ TJ ≤ 125°C
65
110
Leakage current
OUT connected to ground, VI(ENx) = 0 V
-40°C
≤ TJ ≤ 125°C
1
mA
Reverse leakage current
VI(OUTx) = 5.5 V, INx = ground
(3)
TJ = 25°C
0.2
mA
SUPPLY CURRENT (TPS2044B, TPS2054B)
TJ = 25°C
0.5
2
No load on OUT, VI(ENx) = 5.5 V,
Supply current, low-level output
mA
or VI(ENx) = 0 V
-40°C
≤ TJ ≤ 125°C
0.5
10
TJ = 25°C
75
110
No load on OUT, VI(ENx) = 0 V,
Supply current, high-level output
mA
or VI(ENx) = 5.5 V
-40°C
≤ TJ ≤ 125°C
75
140
OUT connected to ground, VI(ENx) = 5.5 V,
Leakage current
-40°C
≤ TJ ≤ 125°C
1
mA
or VI(ENx) = 0 V
Reverse leakage current
VI(OUTx) = 5.5 V, INx = ground
(3)
TJ = 25°C
0.2
mA
UNDERVOLTAGE LOCKOUT
Low-level input voltage, IN, INx
2
2.5
V
Hysteresis, IN, INx
TJ = 25°C
75
mV
OVERCURRENT OC and OCx
Output low voltage, VOL(/OCx)
IO(OCx) = 5 mA
0.4
V
Off-state current(3)
VO(OCx) = 5 V or 3.3 V
1
mA
OC deglitch(3)
OCx assertion or deassertion
4
8
15
ms
THERMAL SHUTDOWN(4)
Thermal shutdown threshold(3)
135
°C
Recovery from thermal shutdown(3)
125
°C
Hysteresis(3)
10
°C
(3)
Not tested in production, specified by design.
(4)
The thermal shutdown only reacts under overcurrent conditions.
4
Copyright 2010–2008, Texas Instruments Incorporated
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