參數(shù)資料
型號： TPS77450
英文描述： 250mA Low Dropout (LDO) Regulator and Power Good Output in MSOP8 package
中文描述： 250mA的低壓降（LDO）穩(wěn)壓器和MSOP8電源良好輸出包
文件頁數(shù)： 8/21頁
文件大?。?/td> 318K
代理商： TPS77450
TPS77301/315/316/318/327/328/333/350 WITH RESET OUTPUT
TPS77401
/
415
/
418
/
427
/
428
/
433
/
450 WITH POWER GOOD OUTPUT
250-mA LDO REGULATORS WITH 8-PIN MSOP PACKAGING
SLVS281E
–
FEBRUARY 2000
–
REVISED JULY 2001
8
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
electrical characteristics over recommended operating junction temperature range (T
J
=
–
40
°
C to
125
°
C), V
I
= V
O(typ)
+ 1 V, I
O
= 1 mA, EN = 0 V, C
O
= 10
μ
F (unless otherwise noted) (continued)
PARAMETER
TEST CONDITIONS
I(PG) = 300
μ
A,
VO decreasing
Measured at VO
VI = 2.7 V,
V(PG) = 5 V
I(RESET) = 300
μ
A
VO decreasing
Measured at VO
VI = 2.7 V,
V(RESET) = 5 V
MIN
TYP
1.1
MAX
UNIT
V
Minimum input voltage for valid PG
V(PG)
≤
0.8 V
PG
(TPS774xx)
Trip threshold voltage
79
85
%VO
%VO
V
μ
A
V
Hysteresis voltage
0.5
Output low voltage
I(PG) = 1 mA
0.15
0.4
Leakage current
1
Minimum input voltage for valid RESET
1.1
Trip threshold voltage
92
98
%VO
%VO
V
μ
A
ms
Reset
(TPS773xx)
Hysteresis voltage
0.5
Output low voltage
I(RESET) = 1 mA
0.15
0.4
Leakage current
1
RESET time-out delay
220
2 8 V Output
2.8-V Output
IO = 250 mA,
IO = 250 mA
IO = 250 mA,
IO = 250 mA
IO = 250 mA,
IO = 250 mA
TJ = 25
°
C
270
V
Dropout voltage (see Note 5)
475
3 3 V Output
3.3-V Output
TJ = 25
°
C
200
mV
330
VDO
Dropout voltage (see Note 5)
5 0 V Output
5.0-V Output
TJ = 25
°
C
125
190
NOTE 5: IN voltage equals VO(typ)
–
100 mV; 1.5 V, 1.6 V, 1.8-V, and 2.7-V dropout voltage limited by input voltage range limitations (i.e., 3.3
V input voltage needs to drop to 3.2 V for purpose of this test).
TYPICAL CHARACTERISTICS
Table of Graphs
FIGURE
2, 3
VO
Output voltage
vs Output current
vs Junction temperature
4, 5
Ground current
vs Junction temperature
6
Power supply rejection ratio
vs Frequency
7
Output spectral noise density
vs Frequency
8
Zo
Output impedance
vs Frequency
9
VDO
Dropout voltage
vs Input voltage
10
vs Junction temperature
11
Line transient response
12, 14
Load transient response
13, 15
Output voltage and enable pulse
vs Time
16
Equivalent series resistance (ESR)
vs Output current
18
–
21
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
TPS77450DGK 功能描述:低壓差穩(wěn)壓器 - LDO 250mA LDO RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動電壓（最大值）:307 mV 輸出電流:1 A 負載調(diào)節(jié):0.3 % 輸出端數(shù)量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-20
TPS77450DGKG4 功能描述:低壓差穩(wěn)壓器 - LDO 250mA LDO RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動電壓（最大值）:307 mV 輸出電流:1 A 負載調(diào)節(jié):0.3 % 輸出端數(shù)量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-20
TPS77450DGKR 功能描述:低壓差穩(wěn)壓器 - LDO 250mA LDO RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動電壓（最大值）:307 mV 輸出電流:1 A 負載調(diào)節(jié):0.3 % 輸出端數(shù)量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-20
TPS77450DGKRG4 功能描述:低壓差穩(wěn)壓器 - LDO 250mA LDO RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動電壓（最大值）:307 mV 輸出電流:1 A 負載調(diào)節(jié):0.3 % 輸出端數(shù)量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-20
TPS77501D 功能描述:低壓差穩(wěn)壓器 - LDO Fast-Tran-Res 500-mA RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動電壓（最大值）:307 mV 輸出電流:1 A 負載調(diào)節(jié):0.3 % 輸出端數(shù)量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-20
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