Datasheet

TPS77001, TPS77012, TPS77015, TPS77018, TPS77025
TPS77027, TPS77028, TPS77030, TPS77033, TPS77050
ULTRALOW-POWER 50-mA LOW-DROPOUT LINEAR REGULATORS
SLVS210D – JUNE 1999 – REVISED MAY 2001
5
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
electrical characteristics over recommended operating free–air temperature range, V
I
= V
O(typ)
+
1 V, I
O
= 50 mA, EN = 0V, C
o
= 4.7 µF (unless otherwise noted) (continued)
PARAMETER TEST CONDITIONS
MIN TYP MAX UNIT
FB input current FB = 1.224 V (TPS77001) –1 1 µA
High level enable input voltage 2.7 V < V
I
< 10 V 1.7 V
Low level enable input voltage 2.7 V < V
I
< 10 V 0.9 V
Power supply ripple rejection
f = 1 kHz, C
O
= 10 µF,
T
J
= 25°C, See Note 4
60 dB
In
p
ut current (EN)
EN = 0 V –1 0 1 µA
Input
current
(EN)
EN = V
I
–1 1 µA
TPS77028
I
O
= 50 mA, T
J
= 25°C 60
TPS77028
I
O
= 50 mA T
J
= –40°C to 125°C 125
TPS77030
I
O
= 50 mA, T
J
= 25°C 57
Dro
p
out voltage (see Note 6)
TPS77030
I
O
= 50 mA T
J
= –40°C to 125°C 115
mV
Dropout
voltage
(see
Note
6)
TPS77033
I
O
= 50 mA, T
J
= 25°C 48
mV
TPS77033
I
O
= 50 mA T
J
= –40°C to 125°C 100
TPS77050
I
O
= 50 mA, T
J
= 25°C 35
TPS77050
I
O
= 50 mA T
J
= –40°C to 125°C 85
NOTES: 4. Minimum IN operating voltage is 2.7 V or V
O
(typ) + 1 V, whichever is greater. Maximum IN voltage 10 V, minimum output current
10 µA, maximum output current 50 mA.
6. IN voltage equals V
O
(Typ) –100mV; TPS77001 output voltage set to 3.3 V nominal with external resistor divider. TPS77012,
TPS77015, TPS77018, TPS77025, and TPS77027 dropout voltage limited by input voltage range limitations.
TYPICAL CHARACTERISTICS
Table of Graphs
FIGURE
V
O
Out
p
ut voltage
vs Output current 1, 2, 3
V
O
Output
voltage
vs Free-air temperature 4, 5, 6
Ground current vs Free-air temperature 7
Output spectral noise density vs Frequency 8
Z
o
Output impedance vs Frequency 9
V
DO
Dropout voltage vs Free-air temperature 10
Ripple rejection vs Frequency 11
LDO startup time 12
Line transient response 13, 15
Load transient response 14, 16
Equivalent series resistance (ESR)
vs Output current 17, 19
Equivalent
series
resistance
(ESR)
vs Added ceramic capacitance 18, 20