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參數(shù)資料
| 型號： | TPS79285 |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | 200mA Low Quiescent Current, Ultra-Low Noise, High PSRR, Low Dropout Linear Regulator |
| 中文描述： | 200mA低靜態(tài)電流，超低噪聲，高PSRR，低壓差線性穩(wěn)壓 |
| 文件頁數(shù)： | 4/18頁 |
| 文件大小： | 377K |
| 代理商： | TPS79285 |
www.ti.com
ELECTRICAL CHARACTERISTICS
Over operating temperature range (T
J
= – 40°C to +125°C), V
IN
= V
OUT(TYP)
+ 0.3V or 2.7V, whichever is greater; I
OUT
= 1mA,
V
EN
= V
IN
, C
OUT
= 2.2μF, C
NR
= 0.01μF, unless otherwise noted. For TPS79901, V
OUT
= 3.0V.
Typical values are at T
J
= +25°C.
TPS79901, TPS79915, TPS79916, TPS79918
TPS79925, TPS79927, TPS79928, TPS799285
TPS79929, TPS79930, TPS79932, TPS79933
SBVS056C–JANUARY 2005–REVISED MAY 2005
PARAMETER
Input voltage range
(1)
Internal reference (TPS79901)
Output voltage range (TPS79901)
Output accuracy
TEST CONDITIONS
MIN
2.7
1.169
V
FB
-1.0
TYP
MAX
6.5
1.217
6.5-V
DO
+1.0
UNIT
V
V
V
%
V
IN
V
FB
V
OUT
V
OUT
1.193
Nominal
Over V
,
I
OUT
, Temp
T
J
= +25°C
V
+ 0.3V
≤
V
≤
6.5V
500μA
≤
I
OUT
≤
200mA
V
OUT(NOM)
+ 0.3V
≤
V
IN
≤
6.5V
500μA
≤
I
OUT
≤
200mA
V
OUT
Output accuracy
(1)
-2.0
±1.0
+2.0
%
V
OUT
%/
V
IN
V
OUT
%/
I
OUT
Load regulation
Line regulation
(1)
0.02
0.002
%/V
%/mA
Dropout voltage
(2)
(V
IN
= V
OUT(NOM)
- 0.1V)
Dropout voltage
(V
IN
= V
OUT(NOM)
- 0.1V)
Output current limit
Ground pin current
Shutdown current (I
GND
)
Feedback pin current (TPS79901)
V
DO
V
OUT
< 3.3V I
OUT
= 200mA
100
175
mV
V
DO
V
OUT
≥
3.3V
I
OUT
= 200mA
90
160
mV
I
CL
I
GND
I
SHDN
I
FB
V
OUT
= 0.9 × V
OUT(NOM)
500μA
≤
I
OUT
≤
200mA
V
EN
≤
0.4V, 2.7V
≤
V
IN
≤
6.5V
200
400
40
0.15
600
60
1.0
0.5
mA
μA
μA
μA
dB
dB
dB
dB
μV
RMS
μV
RMS
μs
μs
μs
μs
V
V
μA
°C
°C
°C
V
mV
-0.5
f = 100Hz
f = 1kHz
f = 10kHz
f = 100kHz
C
NR
= 0.01μF
C
NR
= none
C
NR
= 0.001μF
C
NR
= 0.047μF
C
NR
= 0.01μF
C
NR
= none
70
66
51
38
Power-supply rejection ratio
V
IN
= 3.85V, V
OUT
= 2.85V,
C
NR
= 0.01μF, I
OUT
= 100mA
PSRR
29.5
263
45
45
50
50
Output noise voltage
BW = 10Hz – 100kHz, V
OUT
= 2.8V
V
N
Startup time
V
OUT
= 2.85V,
R
L
= 14
, C
OUT
= 2.2μF
T
STR
V
EN(HI)
V
EN(LO)
I
EN(HI)
Enable high (enabled)
Enable low (shutdown)
Enable pin current, enabled
1.2
V
IN
0.4
1.0
0
V
EN
= V
IN
= 6.5V
Shutdown, temperature increasing
Reset, temperature decreasing
0.03
165
145
TSD
Thermal shutdown temperature
T
J
Operating junction temperature
Under voltage lockout
Hysteresis
-40
1.90
+125
2.50
V
IN
rising
V
IN
falling
2.20
70
UVLO
(1)
(2)
Minimum V
= V
+ V
or 2.7V, whichever is greater.
V
DO
is not measured for devices with V
OUT(NOM)
< 2.8V because minimum V
IN
= 2.7V.
4
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