Datasheet

LT3071
3
3071fc
For more information www.linear.com/LT3071
ELECTRICAL CHARACTERISTICS
The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. C
OUT
= 15µF (Note 9), V
IN
= V
OUT
+ 0.3V (Note 5), V
BIAS
= 2.5V unless
otherwise noted.
PARAMETER CONDITIONS MIN TYP MAX UNITS
Regulated Output Voltage Margining
(Note 3)
MARGA = 1.2V
MARGA = 0V
l
l
9.5
–10.5
10
–10
10.5
–9.5
%
%
Line Regulation to V
IN
V
OUT
= 0.8V, ∆V
IN
= 1.05V to 2.7V, V
BIAS
= 3.3V, I
OUT
= 10mA
V
OUT
= 1.8V, ∆V
IN
= 2.05V to 2.7V, V
BIAS
= 3.3V, I
OUT
= 10mA
l
l
1.0
1.0
mV
mV
Line Regulation to V
BIAS
V
OUT
= 0.8V, ∆V
BIAS
= 2.2V to 3.6V, V
IN
= 1.1V, I
OUT
= 10mA
V
OUT
= 1.8V, ∆V
BIAS
= 3.25V to 3.6V, V
IN
= 2.1V, I
OUT
= 10mA
l
l
2.0
1.0
mV
mV
Load Regulation,
∆I
OUT
= 10mA to 5A
V
BIAS
= 2.5V, V
IN
= 1.05V, V
OUT
= 0.8V
l
–1.5 –3.0
–5.5
mV
mV
V
BIAS
= 2.5V, V
IN
= 1.25V, V
OUT
= 1.0V
l
–2 –4.0
–7.5
mV
mV
V
BIAS
= 3.3V, V
IN
= 1.45V, V
OUT
= 1.2V
l
–2 –4.0
–7.5
mV
mV
V
BIAS
= 3.3V, V
IN
= 1.75V, V
OUT
= 1.5V
l
–2.5 –5.0
–9.0
mV
mV
V
BIAS
= 3.3V, V
IN
= 2.05V, V
OUT
= 1.8V
l
–3 –7.0
–13
mV
mV
Dropout V
oltage,
V
IN
= V
OUT(NOMINAL)
(Note 6)
I
OUT
= 1A, V
OUT
= 1V
l
20 35 mV
I
OUT
= 2.5A, V
OUT
= 1V
l
50 65
85
mV
mV
I
OUT
= 5A, V
OUT
= 1V
l
85 120
150
mV
mV
SENSE Pin Current V
IN
= 1.1V, V
SENSE
= 0.8V
V
BIAS
= 3.3V, V
IN
= 2.1V, V
SENSE
= 1.8V
l
l
35
200
50
300
65
400
µA
µA
Ground Pin Current,
V
IN
= 1.3V, V
OUT
= 1V
I
OUT
= 10mA
I
OUT
= 5A
l
l
0.65
0.9
1.1
1.35
1.8
2.3
mA
mA
BIAS Pin Current in Nap Mode
EN = Low
l
120 200 320 µA
BIAS Pin Current,
V
IN
= 1.3V, V
OUT
= 1V
I
OUT
= 10mA
I
OUT
= 100mA
I
OUT
= 500mA
I
OUT
= 1A
I
OUT
= 2.5A
I
OUT
= 5A
l
l
l
l
l
l
0.75
1.25
2.0
2.6
3.5
4.5
1.08
1.8
3.0
3.8
5.2
6.9
1.5
2.4
4.0
5.0
7.0
10.0
mA
mA
mA
mA
mA
mA
Current
Limit (Note 5) V
IN
– V
OUT
< 0.3V, V
BIAS
= 3.3V
V
IN
– V
OUT
= 1.0V, V
BIAS
= 3.3V
V
IN
– V
OUT
= 1.7V, V
BIAS
= 3.3V
l
l
l
5.1
3.2
1.2
6.4
4.5
2.5
7.7
5.8
4.3
A
A
A
I
MON
Full-Scale Output Current (Note 3) I
OUT
= 5A, V
IN
– V
OUT
= 0.3V, V
OUT
= 0.8V, 1.8V
l
1.6 2.0 2.4 mA
I
MON
/I
OUT
Scale (Note 3) 1A ≤ I
OUT
≤ 5A, V
IN
– V
OUT
= 0.3V, V
OUT
= 0.8V, 1.8V
l
340 400 460 µA/A
Reverse Output Current (Note 8) V
IN
= 0V, V
OUT
= 1.8V
l
300 450 µA
PWRGD V
OUT
Threshold Percentage of V
OUT(NOMINAL)
, V
OUT
Rising
Percentage of V
OUT(NOMINAL)
, V
OUT
Falling
l
l
87
82
90
85
93
88
%
%
PWRGD V
OL
I
PWRGD
= 200µA (Fault Condition)
l
50 150 mV
V
BIAS
Undervoltage Lockout V
BIAS
Rising
V
BIAS
Falling
l
l
1.1
0.9
1.55
1.4
2.1
1.7
V
V
V
IN
-V
OUT
Servo Voltage by VIOC
l
250 300 350 mV
VIOC Output Current V
IN
= V
OUT(NOMINAL)
+ 150mV, Sourcing Out of the Pin
V
IN
= V
OUT(NOMINAL)
+ 450mV, Sinking Into the Pin
l
l
160
170
235
255
310
340
µA
µA
V
IL
Input Threshold (Logic-0 State),
V
O2
, V
O1
, V
O0
Input Falling
l
0.25 V
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