CAUTION: Do not operate at or near the maximum ratings listed for extended periods of time. Exposure to such conditions may adversely impact product reliability and
result in failures not covered by warranty.
NOTE:
5.
JA
is measured in free air with the component mounted on a high effective thermal conductivity test board with “direct attach” features. See
Tech Brief TB379.
Electrical Specifications
T
A
= -40°C to +85°C; V
IN
= (V
O
+ 0.5V) to 5.5V with a minimum V
IN
of 1.5V; C
IN
= 1µF; C
O
= 1µF; Parameters
with MIN and/or MAX limits are 100% tested at +25°C, unless otherwise specified. Temperature limits
established by characterization and are not production tested.
SYMBOL
TEST CONDITIONS
MIN
TYP
MAX
UNIT
PARAMETER
DC CHARACTERISTICS
Supply Voltage
V
IN
Undervoltage Lockout
Threshold
Ground Current
Shutdown Current
Output Voltage Accuracy
V
IN
V
UVLO+
V
UVLO-
I
DD
I
DDS
V
IN
Rising
V
IN
Falling
Output Enabled; I
O
= 0; V
IN
= 1.5V to 5.5V
V
IN
= 5.5V, EN = Low, I
O
= 0
V
IN
= V
O
+ 0.5V to 5.5V, I
O
= 1mA to 150mA, T
J
= +25°C
I
MAX
I
LIM
V
DO
T
SD
I
O
= 250mA; V
O
> 1.8V
Continuous
1.5
1.425
1.3
1.375
35
0.1
-0.8
5.5
1.5
V
V
V
50
1.0
+0.8
+1.8
µA
µA
%
V
IN
= V
O
+ 0.5V to 5.5V, I
O
= 1mA to 150mA, T
J
= -40°C to +125°C -1.8
Maximum Output Current
Internal Current Limit
Dropout Voltage (Notes 6, 7)
Thermal Shutdown Temperature
Thermal Shutdown Hysteresis
AC CHARACTERISTICS
Ripple Rejection (Note 6)
V
IN
= 4.5V, V
O
= 3.3V @ 1kHz
V
IN
= 4.5V, V
O
= 3.3V @ 10kHz
V
IN
= 4.5V, V
O
= 3.3V @ 1MHz
Output Noise Voltage (Note 6)
DEVICE START-UP CHARACTERISTICS
Device Enable Time
LDO Soft-start Ramp Rate
EN LOGIC CHARACTERISTICS
Input Low Voltage
Input High Voltage
Input Leakage Current
NOTES:
6. Limits established by characterization and are not production tested.
7. Dropout voltage is measured as V
IN
- V
O
, when V
O
is 4% lower than the value of V
O
; when V
IN
= V
O
+ 0.5V.
V
IL
V
IH
I
IL,
I
IH
1.1
t
EN
t
SSR
Time from assertion of the EN pin to when the output voltage
reaches 95% of the V
O
(nom)
Slope of linear portion of LDO output voltage ramp during start-up
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