參數(shù)資料
型號： TPS79428DGNR
廠商： Texas Instruments, Inc.
英文描述： ULTRALOW-NOISE, HIGH PSRR, FAST RF 250-mA LOW-DROPOUT LINEAR REGULATORS
中文描述： 超低噪聲，高PSRR，快速射頻250毫安低壓降線性穩(wěn)壓器
文件頁數(shù)： 4/15頁
文件大?。?/td> 487K
代理商： TPS79428DGNR
www.ti.com
ELECTRICAL CHARACTERISTICS
Over recommended operating temperature range (T
J
= -40
°
C to 125
°
C), V
EN
= V
IN
, V
IN
= V
OUT(nom)
+ 1 V
(1)
, I
OUT
= 1mA,
C
OUT
= 10μF, C
NR
= 0.01 μF, unless otherwise noted. Typical values are at 25
°
C.
TPS79401, TPS79418
TPS79425, TPS79428
TPS79430, TPS79433
SLVS349D–NOVEMBER 2001–REVISED OCTOBER 2004
PARAMETER
TEST CONDITIONS
MIN
2.7
TYP
MAX
5.5
250
1.230
UNIT
V
mA
V
V
%
V
IN
I
OUT
V
FB
V
OUT
Input voltage
(1)
Continuous output current
Internal reference
Output voltage range
Accuracy
(1)
Output voltage line regulation
(
V
OUT
%/
V
IN
)
(1)
Load regulation (
V
OUT
%/
I
OUT
)
0
TPS79401
TPS79401
T
J
= 25
°
C
1.220
V
FB
-3.0
1.225
5.5 - V
DO
V
OUT
+ 1 V
≤
V
IN
≤
5.5 V
0 mA
≤
I
OUT
≤
250 mA
+3.0
V
OUT
+ 1 V < V
IN
≤
5.5 V
0.05
0.12
%/V
0 μA < I
OUT
< 250 mA
I
OUT
= 250 mA
I
OUT
= 250 mA
I
OUT
= 250 mA
V
OUT
= 0 V
0 μA < I
OUT
< 250 mA
V
EN
= 0 V
V
FB
= 1.8 V
f = 100 Hz
f = 10 kHz
f = 100 kHz
10
155
155
145
925
170
0.07
mV
TPS79428
TPS79430
TPS79433
210
210
200
Dropout voltage
(2)
V
IN
= V
OUT(nom)
- 0.1 V
mV
Output current limit
Ground pin current
Shutdown current
(3)
FB pin current
mA
μA
μA
μA
220
2.7 V < V
IN
< 5.5 V
1
1
I
OUT
= 250 mA
I
OUT
= 250 mA
I
OUT
= 250 mA
C
NR
= 0.001 μF
C
NR
= 0.0047 μF
C
NR
= 0.01 μF
C
NR
= 0.1 μF
C
NR
= 0.001 μF
C
NR
= 0.0047 μF
C
NR
= 0.01 μF
65
60
40
55
36
33
32
50
70
100
Power-supply ripple
rejection
TPS79428
dB
BW = 100 Hz to 100
kHz, I
OUT
= 250 mA
Output noise voltage (TPS79428)
μV
RMS
Time, start-up (TPS79428)
R
L
- 14
, C
OUT
= 1 μF
μs
High-level enable input voltage
Low-level enable input voltage
EN pin current
UVLO threshold
UVLO hysteresis
2.7 V < V
IN
< 5.5 V
2.7 V < V
IN
< 5.5 V
V
EN
= 0
V
CC
rising
1.7
V
IN
0.7
V
V
μA
V
mV
0
1
1
2.25
2.65
100
(1)
(2)
(3)
Minimum V
is 2.7 V or V
+ V
, whichever is greater.
Dropout is not measured for the TPS79418 and TPS79425 since minimum V
= 2.7 V.
For adjustable versions, this applies only after V
IN
is applied; then V
EN
transitions high to low.
4
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參數(shù)描述
TPS79428DGNRG4 功能描述:低壓差穩(wěn)壓器 - LDO High PSRR Fast RF High-Enable 250-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(fù)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
TPS79428DGNT 功能描述:低壓差穩(wěn)壓器 - LDO High PSRR Fast RF High-Enable 250-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(fù)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
TPS79428DGNTG4 功能描述:低壓差穩(wěn)壓器 - LDO High PSRR Fast RF High-Enable 250-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(fù)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
TPS79430DCQ 功能描述:低壓差穩(wěn)壓器 - LDO High PSRR Fast RF High-Enable 250-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(fù)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
TPS79430DCQG4 功能描述:低壓差穩(wěn)壓器 - LDO Sgl Output 250mA Fixed 3.0V Hi PSRR 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(fù)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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