The TPS731xx family of low-dropout (LDO) linear voltage regulators uses a new topology: an NMOS pass element in a voltage-follower configuration

 

TPS73101

Manufacturer Part NumberTPS73101
DescriptionThe TPS731xx family of low-dropout (LDO) linear voltage regulators uses a new topology: an NMOS pass element in a voltage-follower configuration
ManufacturerTexas Instruments
TPS73101 datasheets

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Specifications of TPS73101

Iout(max)(a)0.1Vdo(typ)(mv)30
Iq(typ)(ma)0.4Vin(min)(v)1.7
Vin(max)(v)5.5Vout Adj(min)(v)1.2
Vout Adj(max)(v)5.5Accuracy(%)1
Output Capacitor TypeCapacitor FreeVout(min)(v)1.2
Vout(max)(v)5.5Pin/package5SOT-23
Regulated Outputs(#)1  
1
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..........................................................................................................................................
ELECTRICAL CHARACTERISTICS
Over operating temperature range (T
J
C
= 0.1μF, unless otherwise noted. Typical values are at T
OUT
PARAMETER
(1)
V
Input voltage range
IN
V
Internal reference (TPS73101)
FB
Output voltage range (TPS73101)
Nominal
V
OUT
(1) (3)
Accuracy
V
, I
IN
(1)
ΔV
%/ΔV
Line regulation
OUT
IN
ΔV
%/ΔI
Load regulation
OUT
OUT
(4)
Dropout voltage
V
DO
(V
= V
(nom) – 0.1V)
IN
OUT
Z
(DO)
Output impedance in dropout
O
I
Output current limit
CL
I
Short-circuit current
SC
I
Reverse leakage current
REV
I
GND pin current
GND
I
Shutdown current (I
)
SHDN
GND
I
FB pin current (TPS73101)
FB
Power-supply rejection ratio
PSRR
(ripple rejection)
Output noise voltage
V
N
BW = 10Hz - 100kHz
t
Startup time
STR
V
(HI)
EN pin high (enabled)
EN
V
(LO)
EN pin low (shutdown)
EN
I
(HI)
EN pin current (enabled)
EN
T
Thermal shutdown temperature
SD
T
Operating junction temperature
J
(1) Minimum V
= V
+ V
or 1.7V, whichever is greater.
IN
OUT
DO
(2) TPS73101 is tested at V
= 2.5V.
OUT
(3) Tolerance of external resistors not included in this specification.
(4) V
is not measured for fixed output versions with V
DO
(5) Fixed-voltage versions only; refer to the
Copyright © 2003–2009, Texas Instruments Incorporated
= -40°C to +125°C), V
= V
+ 0.5V
IN
OUT(nom)
= +25°C.
J
TEST CONDITIONS
T
= +25°C
J
(2)
T
= +25°C
J
V
+ 0.5V ≤ V
≤ 5.5V;
OUT
IN
, and T
OUT
10 mA ≤ I
≤ 150mA
OUT
V
+ 0.5V ≤ V
≤ 5.5V
OUT(nom)
IN
1mA ≤ I
≤ 150mA
OUT
10mA ≤ I
≤ 150mA
OUT
I
= 150mA
OUT
1.7 V ≤ V
≤ V
+ V
IN
OUT
DO
V
= 0.9 × V
OUT
OUT(nom)
V
= 0V
OUT
(5)
(–I
)
V
≤ 0.5V, 0V ≤ V
≤ V
IN
EN
IN
OUT
I
= 10mA (I
)
OUT
Q
I
= 150mA
OUT
V
≤ 0.5V, V
≤ V
≤ 5.5,
EN
OUT
IN
–40°C ≤ T
≤ +100°C
J
f = 100Hz, I
= 150 mA
OUT
f = 10kHz, I
= 150 mA
OUT
C
= 10μF, No C
OUT
NR
C
= 10μF, C
= 0.01μF
OUT
NR
V
= 3V, R
= 30Ω
OUT
L
C
= 1μF, C
= 0.01μF
OUT
NR
V
= 5.5V
EN
Shutdown
Temp increasing
Reset
Temp decreasing
< 1.8V since minimum V
OUT(nom)
Applications
section for more information.
TPS731xx
SBVS034M – SEPTEMBER 2003 – REVISED AUGUST 2009
(1)
, I
= 10mA, V
= 1.7V, and
OUT
EN
MIN
TYP
MAX
1.7
5.5
1.198
1.20
1.210
V
5.5 – V
FB
DO
–0.5
+0.5
–1.0
±0.5
+1.0
0.01
0.002
0.0005
30
100
0.25
150
360
500
200
0.1
10
400
550
550
750
0.02
1
0.1
0.3
58
37
27 × V
OUT
8.5 × V
OUT
600
1.7
V
IN
0
0.5
0.02
0.1
+160
+140
–40
+125
= 1.7V.
IN
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UNIT
V
V
V
%
%/V
%/mA
mV
Ω
mA
mA
μA
μA
μA
μA
dB
μV
RMS
μs
V
V
μA
°C
°C
3

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