Datasheet
TPS79015, TPS79018, TPS79025, TPS79028, TPS79030
ULTRALOW-POWER LOW-NOISE 50-mA
LOW-DROPOUT LINEAR REGULATORS
SLVS299B – SEPTEMBER 2000 – REVISED MAY 2001
4
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
recommended operating conditions
MIN NOM MAX UNIT
Input voltage, V
I
(see Note 2) 2.7 10 V
Continuous output current, I
O
(see Note 3) 0 50 mA
Operating junction temperature, T
J
–40 125 °C
NOTES: 2. To calculate the minimum input voltage for your maximum output current, use the following formula:
V
I
(min) = V
O
(max) + V
DO
(max load)
3. Continuous output current and operating junction temperature are limited by internal protection circuitry, but it is not recommended
that the device operate under conditions beyond those specified in this table for extended periods of time.
electrical characteristics over recommended operating free–air temperature range,
V
I
= V
O(typ)
+ 1 V, I
O
= 1 mA, EN = 0V, C
o
= 4.7 µF (unless otherwise noted)
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
TPS79015
T
J
= 25°C, 2.7 V < V
I
< 10 V 1.5
TPS79015
T
J
= –40°C to 125°C, 2.7 V < V
I
< 10 V 1.455 1.545
TPS79018
T
J
= 25°C, 2.8 V < V
I
< 10 V 1.8
TPS79018
T
J
= –40°C to 125°C, 2.8 V < V
I
< 10 V 1.746 1.854
Output volta
g
e (10
µ
A to 50 mA load)
TPS79025
T
J
= 25°C, 3.5 V < V
I
< 10 V 2.5
V
g( µ )
(see Note 4)
TPS79025
T
J
= –40°C to 125°C, 3.5 V < V
I
< 10 V 2.425 2.575
V
TPS79028
T
J
= 25°C, 3.8 V < V
I
< 10 V 2.8
TPS79028
T
J
= –40°C to 125°C, 3.8 V < V
I
< 10 V 2.716 2.884
TPS79030
T
J
= 25°C, 4.0 V < V
I
< 10 V 3
TPS79030
T
J
= –40°C to 125°C, 4.0 V < V
I
< 10 V 2.910 3.090
Quiescent current (GND current) (see Note 4)
EN = 0 V, 10 µA < I
O
< 50 mA,
T
J
= 25°C
17
µA
Quiescent
current
(GND
current)
(see
Note
4)
EN = 0 V, I
O
= 50 mA,
T
J
= –40°C to 125°C
28
µ
A
Load regulation
EN = 0 V, I
O
= 10 µA to 50 mA,
T
J
= 25°C
8 mV
Out
p
ut voltage line regulation (∆V
O
/V
O
)
V
O
+ 1 V < V
I
≤ 10 V, T
J
= 25°C 0.04
Output
voltage
line
regulation
(∆V
O
/V
O
)
(see Notes 4 and 5)
V
O
+ 1 V < V
I
≤ 10 V,
T
J
= –40°C to 125°C
0.1
%/V
Output noise voltage (TPS79030)
BW = 300 Hz to 50 kHz, C
(byp)
= 0.01 µF,
C
o
= 10 µF, I
O
= 50 mA, T
J
= 25°C
56 µVrms
Output current limit V
O
= 0 V, See Note 4 350 750 mA
Standby current
EN = V
I
, 2.7 < V
I
< 10 V 1 µA
Standby
current
T
J
= –40°C to 125°C 2 µA
NOTES: 4. The minimum IN operating voltage is 2.7 V or V
O
(typ) + 1 V, whichever is greater. The maximum IN voltage is 10 V. The minimum
output current is 10 µA and the maximum output current is 50 mA.
5. If V
O
≤ 1.8 V then V
Imin
= 2.7 V, V
Imax
= 10 V:
Line Reg. (mV) % V
V
O
V
Imax
2.7 V
100
1000
If V
O
≥ 2.5 V then V
Imin
= V
O
+ 1 V, V
Imax
= 10 V:
Line Reg. (mV) % V
V
O
V
Imax
V
O
1V
100
1000