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參數(shù)資料
| 型號： | TPS2049DRG4 |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 電源管理 |
| 英文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO8 |
| 封裝： | GREEN, PLASTIC, MS-012AA, SOIC-8 |
| 文件頁數(shù)： | 8/14頁 |
| 文件大?。?/td> | 471K |
| 代理商： | TPS2049DRG4 |
ELECTRICAL CHARACTERISTICS
www.ti.com......................................................................................................................................... SLVS713A – OCTOBER 2006 – REVISED SEPTEMBER 2007
over recommended operating junction temperature range, VI(IN) = 5.5 V, IO = 90 mA, VI(EN) = 0 V (unless otherwise noted)
PARAMETER
TEST CONDITIONS(1)
MIN
TYP MAX
UNIT
POWER SWITCH
Static drain-source
on-state resistance, 5-V
rDS(on)
VI(IN) = 2.7 V or 5.5 V,
IO = 90 A,
–40
°C < T
J < 125°C
400
650
m
operation and 2.7-V
operation
tr
Rise time, output
VI(IN) = 2.7 V
CL = 1 F,
RL = 50 , TJ = 25°C
0.1
0.4
ms
tf
Fall time, output
VI(IN) = 2.7 V
CL = 1 F,
RL = 50 , TJ = 25°C
0.03
0.3
ms
ENABLE INPUT EN
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(EN) = 0 V or VI(EN) = VI(IN)
–0.5
0.5
A
ton
Turnon time
CL = 1 F, RL = 50 , TJ = 25°C
1
ms
toff
Turnoff time
CL = 1 F, RL = 50 , TJ = 25°C
1
ms
CURRENT LIMIT
Short-circuit output
VI(IN) = 5 V, OUT connected to GND, Device enabled into
IOS
100
150
200
mA
current
short-circuit, 10
°C < T
J < 40°C
IOC_trip
Overcurrent trip threshold
10
°C < T
J < 40°C, 100 A/sec current rate increase
325
mA
Short-circuit response
2
s
time
SUPPLY CURRENT
TJ = 25°C
0.5
1
Supply current, low-level output
No load on OUT
VI(EN) = 5.5 V
A
–40C
≤ TJ ≤ 125°C
0.5
5
TJ = 25°C
43
60
Supply current, high-level output
No load on OUT
VI(EN) = 0 V
A
–40C
≤ TJ ≤ 125°C
43
70
OUT connected to
Leakage current
VI(EN) = 5.5 V,
–40C
≤ TJ ≤ 125°C
1
A
ground
VI(OUT) = 5.5 V,
Reverse leakage current
IN = ground
TJ = 25°C
0
A
VI(EN) = 0 V
UNDERVOLTAGE LOCKOUT
IN
Low-level input voltage
2
2.5
V
IN
Hysteresis
TJ = 25C
75
mV
OVERCURRENT OC
VOL(OC)
Output low voltage
IO(OC) = 5 mA
0.4
V
Off-state current
VO(OC) = 5 V or 3.3 V
1
A
OC deglitch
OC assertion or de-assertion
4
8
15
ms
THERMAL SHUTDOWN(2)
Thermal shutdown threshold
135
°C
Recovery from thermal shutdown
125
°C
Hysteresis
10
°C
(1)
Pulse-testing techniques maintain junction temperature close to ambient temperature; thermal effects must be taken into account
separately.
(2)
The thermal shutdown only reacts under overcurrent conditions.
Copyright 2006–2007, Texas Instruments Incorporated
3
Product Folder Link(s): TPS2049
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