Datasheet

LT3014B
3
3014bfa
ELECTRICAL CHARACTERISTICS
SYMBOL CONDITIONS MIN TYP MAX UNITS
Minimum Input Voltage I
LOAD
= 20mA
l
3 3.3 V
ADJ Pin Voltage
(Notes 2, 3)
V
IN
= 3.3V, I
LOAD
= 100μA
3.3V < V
IN
< 80V, 100μA < I
LOAD
< 20mA
l
1.200
1.180
1.220
1.220
1.240
1.260
V
V
Line Regulation
ΔV
IN
= 3.3V to 80V, I
LOAD
= 100μA (Note 2)
l
110 mV
Load Regulation
V
IN
= 3.3V, ΔI
LOAD
= 100μA to 20mA (Note 2)
V
IN
= 3.3V, ΔI
LOAD
= 100μA to 20mA
l
13 25
40
mV
mV
Dropout Voltage
V
IN
= V
OUT(NOMINAL)
(Notes 4, 5)
I
LOAD
= 100μA
I
LOAD
= 100μA
l
120 180
250
mV
mV
I
LOAD
= 1mA
I
LOAD
= 1mA
l
200 270
360
mV
mV
I
LOAD
= 10mA
I
LOAD
= 10mA
l
300 350
450
mV
mV
I
LOAD
= 20mA
I
LOAD
= 20mA
l
350 410
570
mV
mV
GND Pin Current
V
IN
= V
OUT(NOMINAL)
(Notes 4, 6)
I
LOAD
= 0mA
I
LOAD
= 100μA
I
LOAD
= 1mA
I
LOAD
= 10mA
I
LOAD
= 20mA
l
l
l
l
l
7
12
40
250
650
20
30
100
450
1000
μA
μA
μA
μA
μA
Output Voltage Noise C
OUT
= 0.47μF, I
LOAD
= 20mA, BW = 10Hz to 100kHz 115 μV
RMS
ADJ Pin Bias Current (Note 7) 410 nA
Ripple Rejection V
IN
= 7V (Avg), V
RIPPLE
= 0.5V
P-P
, f
RIPPLE
= 120Hz, I
LOAD
= 20mA 60 70 dB
Current Limit V
IN
= 7V, V
OUT
= 0V
V
IN
= 3.3V, ΔV
OUT
= –0.1V (Note 2)
l
25
70 mA
mA
Input Reverse Leakage Current V
IN
= –80V, V
OUT
= 0V
l
6mA
Reverse Output Current (Note 8) V
OUT
= 1.22V, V
IN
< 1.22V (Note 2) 2 4 μA
The l denotes the specifi cations which apply over the full operating
temperature range, otherwise specifi cations are at T
J
= 25°C.
Note 1: Stresses beyond those listed under Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to any Absolute
Maximum Rating condition for extended periods may affect device
reliability and lifetime.
Note 2: The LT3014B is tested and specifi ed for these conditions with the
ADJ pin connected to the OUT pin.
Note 3: Operating conditions are limited by maximum junction
temperature. The regulated output voltage specifi cation will not apply
for all possible combinations of input voltage and output current. When
operating at maximum input voltage, the output current range must be
limited. When operating at maximum output current, the input voltage
range must be limited.
Note 4: To satisfy requirements for minimum input voltage, the LT3014B
is tested and specifi ed for these conditions with an external resistor
divider (249k bottom, 392k top) for an output voltage of 3.3V. The external
resistor divider adds a 5µA DC load on the output.
Note 5: Dropout voltage is the minimum input to output voltage differential
needed to maintain regulation at a specifi ed output current. In dropout, the
output voltage is equal to (V
IN
– V
DROPOUT
).
Note 6: GND pin current is tested with V
IN
= V
OUT
(nominal) and a current
source load. This means the device is tested while operating in its dropout
region. This is the worst-case GND pin current. The GND pin current
decreases slightly at higher input voltages.
Note 7: ADJ pin bias current fl ows into the ADJ pin.
Note 8: Reverse output current is tested with the IN pin grounded and the
OUT pin forced to the rated output voltage. This current fl ows into the OUT
pin and out of the GND pin.
Note 9: The LT3014B is tested and specifi ed under pulse load conditions
such that T
J
≅ T
A
. The LT3014BE is 100% tested at T
A
= 25°C.
Performance at –40°C to 125°C is assured by design, characterization,
and statistical process controls. The LT3014BI is guaranteed over the full
–40°C to 125°C operating junction temperature range.
Note 10: This IC includes overtemperature protection that is intended
to protect the device during momentary overload conditions. Junction
temperature will exceed 125°C when overtemperature protection is active.
Continuous operation above the specifi ed maximum operating junction
temperature may impair device reliability.