參數(shù)資料
型號(hào)： TPS2051BQDRQ1
廠商： TEXAS INSTRUMENTS INC
元件分類： 電源管理
英文描述： 2-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO8
封裝： GREEN, PLASTIC, MS-012AA, SOIC-8
文件頁數(shù)： 26/31頁
文件大?。?/td> 695K
代理商： TPS2051BQDRQ1
SLVS782A – NOVEMBER 2007 – REVISED JUNE 2010
www.ti.com
ELECTRICAL CHARACTERISTICS
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
Power Switch
Static drain-source on-state
resistance, 5-V or 3.3-V
VI(IN) = 5 V or 3.3 V, IO = 0.5 A
–40°C
≤ TJ ≤ 125°C
70
135
operation
rDS(on)
m
Static drain-source on-state
VI(IN) = 2.7 V, IO = 0.5 A
–40°C
≤ TJ ≤ 125°C
75
150
resistance, 2.7-V operation(2)
VI(IN) = 5.5 V
0.6
1.5
tr
Rise time, output(2)
VI(IN) = 2.7 V
0.4
1
CL = 1 mF,
TJ = 25°C
ms
RL = 10
VI(IN) = 5.5 V
0.05
0.5
tf
Fall time, output(2)
VI(IN) = 2.7 V
0.05
0.5
Enable Input (EN, ENx )
VIH
High-level input voltage
2.7 V
≤ VI(IN) ≤ 5.5 V
2
V
VIL
Low-level input voltage
2.7 V
≤ VI(IN) ≤ 5.5 V
0.8
V
II
Input current
VI( ENx ) = 0 V or 5.5 V
–0.5
0.5
mA
ton
Turn-on time(2)
CL = 100 mF, RL = 10
3
ms
toff
Turn-off time(2)
CL = 100 mF, RL = 10
10
ms
Current Limit
TJ = 25°C
0.65
1
1.25
VI(IN) = 5 V, OUT connected to GND,
IOS
Short-circuit output current
A
device enabled into short-circuit
–40°C
≤ TJ ≤ 125°C
0.6
1
1.3
Supply Current (TPS2041B/TPS2051B)
TJ = 25°C
0.5
1
No load on OUT,
Supply current, low-level output
mA
VI(EN) = 5.5 V or VI(EN) = 0 V
–40°C
≤ TJ ≤ 125°C
0.5
5
TJ = 25°C
43
60
No load on OUT,
Supply current, high-level output
mA
VI(EN) = 0 V or VI(EN) = 5.5 V
–40°C
≤ TJ ≤ 125°C
43
70
OUT connected to ground,
Leakage current
–40°C
≤ TJ ≤ 125°C
1
mA
VI(EN) = 5.5 V or VI(EN) = 0 V
Reverse leakage current
VI(OUTx) = 5.5 V, IN = ground
(2)
TJ = 25°C
0
mA
Supply Current (TPS2042B)
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
(2)
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, OCx )
Output low voltage, VOL(/OCx)
IO( OCx ) = 5 mA
0.4
V
Off-state current(2)
VO( OCx ) = 5 V or 3.3 V
1
mA
OC deglitch(2)
OCx assertion or deassertion
4
8
15
ms
Thermal Shutdown(3)
Thermal shutdown threshold(2)
135
°C
Recovery from thermal shutdown(2)
125
°C
Hysteresis(2)
10
°C
(1)
Pulse-testing techniques maintain junction temperature close to ambient temperature; thermal effects must be accounted for separately.
(2)
Specified by design
(3)
The thermal shutdown only reacts under overcurrent conditions.
4
Copyright 2007–2010, Texas Instruments Incorporated
Product Folder Link(s): TPS2041B-Q1 TPS2042B-Q1 TPS2051B-Q1
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