參數(shù)資料
型號(hào)： TPS73715
廠商： Texas Instruments, Inc.
英文描述： 1A Low-Dropout Regulator with Reverse Current Protection
中文描述： 1A低壓差穩(wěn)壓器的反向電流保護(hù)
文件頁(yè)數(shù)： 3/18頁(yè)
文件大?。?/td> 578K
代理商： TPS73715
www.ti.com
ELECTRICAL CHARACTERISTICS
Over operating temperature range (T
J
= –40
°
C to +125
°
C), V
IN
= V
OUT(nom)
+ 1.0V
(1)
, I
OUT
= 10mA, V
EN
= 2.2V, and
C
OUT
= 2.2
μ
F, unless otherwise noted. Typical values are at T
J
= +25
°
C.
TPS737xx
SBVS067C–JANUARY 2006–REVISED AUGUST 2006
PARAMETER
Input voltage range
(1)(2)
Internal reference (TPS73701)
Output voltage range
(TPS73701)
TEST CONDITIONS
MIN
2.2
1.198
TYP
MAX
5.5
1.210
UNIT
V
V
V
IN
V
FB
T
J
= +25
°
C
1.20
V
FB
5.5 – V
DO
V
V
OUT
Nominal
over V
IN
, I
OUT
,
and T
T
J
= +25
°
C
V
+ 0.5V
≤
V
IN
≤
5.5V;
10mA
≤
I
OUT
≤
1A
V
OUT(nom)
+ 0.5V
≤
V
IN
≤
5.5V
1mA
≤
I
OUT
≤
1A
10mA
≤
I
OUT
≤
1A
–1.0
+1.0
Accuracy
(1)(3)
%
–3.0
±
0.5
+3.0
V
OUT
%/
V
IN
Line regulation
(1)
0.01
0.002
0.0005
%/V
V
OUT
%/
I
OUT
Load regulation
%/mA
Dropout voltage
(4)
(V
IN
= V
OUT(nom)
– 0.1V)
Output impedance in dropout
Output current limit
Short-circuit current
Reverse leakage current
(5)
(–I
IN
)
V
DO
I
OUT
= 1A
130
500
mV
Z
O
(DO)
I
CL
I
SC
I
REV
2.2V
≤
V
IN
≤
V
OUT
+ V
DO
V
OUT
= 0.9
×
V
OUT(nom)
V
OUT
= 0V
V
EN
≤
0.5V, 0V
≤
V
IN
≤
V
OUT
I
OUT
= 10mA (I
Q
)
I
OUT
= 1A
V
EN
≤
0.5V, V
OUT
≤
V
IN
≤
5.5
0.25
1.6
450
0.1
400
800
20
0.1
A
mA
μ
A
1.05
2.2
I
GND
Ground pin current
μ
A
I
SHDN
I
FB
Shutdown current (I
GND
)
FB pin current (TPS73701)
nA
μ
A
0.6
f = 100Hz, I
= 1A,
V
IN
= V
OUT
+ 1V
f = 10kHz, I
= 1A,
V
IN
= V
OUT
+ 1V
58
Power-supply rejection ratio
(ripple rejection)
PSRR
dB
37
Output noise voltage
BW = 10Hz – 100KHz
Startup time
Enable high (enabled)
Enable low (shutdown)
Enable pin current (enabled)
V
N
C
OUT
= 10
μ
F
27
×
V
OUT
μ
V
RMS
t
STR
V
EN(HI)
V
EN(LO)
I
EN(HI)
V
OUT
= 3V, R
L
= 30
, C
OUT
= 1
μ
F
600
μ
s
V
V
nA
1.7
0
V
IN
0.5
V
EN
= 5.5V
Shutdown, temperature increasing
Reset, temperature decreasing
20
+160
+140
T
SD
Thermal shutdown temperature
°
C
T
J
Operating junction temperature
–40
+125
°
C
(1)
(2)
Minimum V
IN
= V
+ V
or 2.2V, whichever is greater.
For V
< 1.6V, when V
≤
1.6V, the output will lock to V
IN
and may result in an over-voltage condition on the output. To avoid this
situation, disable the device before powering down V
.
Tolerance of external resistors not included in this specification.
V
is not measured for fixed output versions with V
OUT(nom)
< 2.3V since minimum V
IN
= 2.2V.
Refer to the
Applications
section for more information.
(3)
(4)
(5)
3
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