Datasheet
LT3012
3
3012fd
ELECTRICAL CHARACTERISTICS
PARAMETER CONDITIONS MIN TYP MAX UNITS
Minimum Input Voltage I
LOAD
= 250mA
l
4 4.75 V
ADJ Pin Voltage (Notes 2, 3) V
IN
= 4V, I
LOAD
= 1mA
4.75V < V
IN
< 80V, 1mA < I
LOAD
< 250mA
l
1.225
1.2
1.24
1.24
1.255
1.28
V
V
Line Regulation ΔV
IN
= 4V to 80V, I
LOAD
= 1mA (Note 2)
l
0.1 5 mV
Load Regulation (Note 2) V
IN
= 4.75V, ΔI
LOAD
= 1mA to 250mA
V
IN
= 4.75V, ΔI
LOAD
= 1mA to 250mA
l
712
25
mV
mV
Dropout Voltage
V
IN
= V
OUT(NOMINAL)
(Notes 4, 5)
I
LOAD
= 10mA
I
LOAD
= 10mA
l
160 230
300
mV
mV
I
LOAD
= 50mA
I
LOAD
= 50mA
l
250 340
420
mV
mV
I
LOAD
= 250mA
I
LOAD
= 250mA
l
400 490
620
mV
mV
GND Pin Current
V
IN
= 4.75V (Notes 4, 6)
I
LOAD
= 0mA
I
LOAD
= 100mA
I
LOAD
= 250mA
l
l
40
3
10
100
18
μA
mA
mA
Output Voltage Noise C
OUT
= 10μF, I
LOAD
= 250mA, BW = 10Hz to 100kHz 100 μV
RMS
ADJ Pin Bias Current (Note 7) 30 100 nA
Shutdown Threshold V
OUT
= Off to On
V
OUT
= On to Off
l
l
0.3
1.3
0.8
2V
V
SHDN Pin Current (Note 8) V
SHDN
= 0V
V
SHDN
= 6V
0.3
0.1
2
1
μA
μA
Quiescent Current in Shutdown V
IN
= 6V, V
SHDN
= 0V 1 5 μA
Ripple Rejection V
IN
= 7V(Avg), V
RIPPLE
= 0.5V
P-P,
f
RIPPLE
= 120Hz, I
LOAD
= 250mA 65 75 dB
Current Limit V
IN
= 7V, V
OUT
= 0V
V
IN
= 4.75V, ΔV
OUT
= –0.1V (Note 2)
l
250
400 mA
mA
Reverse Output Current (Note 9) V
OUT
= 1.24V, V
IN
< 1.24V (Note 2) 12 25 μA
The l
denotes the specifi cations which apply over the –40°C to 125°C operating temperature range, otherwise specifi cations are at T
J
= 25°C.
(LT3012E)
ELECTRICAL CHARACTERISTICS
PARAMETER CONDITIONS MIN TYP MAX UNITS
Minimum Input Voltage I
LOAD
= 200mA
l
4 4.75 V
ADJ Pin Voltage (Notes 2, 3) V
IN
= 4V, I
LOAD
= 1mA
4.75V < V
IN
< 80V, 1mA < I
LOAD
< 200mA
l
1.225
1.2
1.24
1.24
1.255
1.28
V
V
Line Regulation ΔV
IN
= 4V to 80V, I
LOAD
= 1mA (Note 2)
l
0.1 5 mV
Load Regulation (Note 2) V
IN
= 4.75V, ΔI
LOAD
= 1mA to 200mA
V
IN
= 4.75V, ΔI
LOAD
= 1mA to 200mA
l
612
30
mV
mV
Dropout Voltage
V
IN
= V
OUT(NOMINAL)
(Notes 4, 5)
I
LOAD
= 10mA
I
LOAD
= 10mA
l
160 230
320
mV
mV
I
LOAD
= 50mA
I
LOAD
= 50mA
l
250 340
450
mV
mV
I
LOAD
= 200mA
I
LOAD
= 200mA
l
360 490
630
mV
mV
GND Pin Current
V
IN
= 4.75V (Notes 4, 6)
I
LOAD
= 0mA
I
LOAD
= 100mA
I
LOAD
= 200mA
l
l
40
3
7
110
18
μA
mA
mA
The l
denotes the specifi cations which apply over the –40°C to 140°C operating temperature range, otherwise specifi cations are at T
J
= 25°C.
(LT3012H)