Datasheet

LT3070
4
3070fb
For more information www.linear.com/LT3070
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
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
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
, MARGSEL, MARGTOL
Input Falling
l
0.25 V
V
IZ
Input Range (Logic-Z State),
V
O2
, V
O1
, V
O0
, MARGSEL, MARGTOL
l
0.75 V
BIAS
– 0.9 V
V
IH
Input Threshold (Logic-1 State),
V
O2
, V
O1
, V
O0
, MARGSEL, MARGTOL
Input Rising
l
V
BIAS
– 0.25 V
Input Hysteresis (Both Thresholds),
V
O2
, V
O1
, V
O0
, MARGSEL, MARGTOL
60 mV
Input Current High,
V
O2
, V
O1
, V
O0
, MARGSEL, MARGTOL
V
IH
= V
BIAS
= 2.5V, Current Flows Into Pin
l
25 40 µA
Input Current Low,
V
O2
, V
O1
, V
O0
, MARGSEL, MARGTOL
V
IL
= 0V, V
BIAS
= 2.5V, Current Flows Out of Pin
l
25 40 µA
EN Pin Threshold V
OUT
= Off to On, V
BIAS
= 2.5V
V
OUT
= On to Off, V
BIAS
= 2.5V
V
OUT
= Off to On, V
BIAS
=2.2V to 3.6V
V
OUT
= On to Off, V
BIAS
=2.2V to 3.6V
l
l
l
l
0.9
0.36 • V
BIAS
1.4
0.56 • V
BIAS
V
V
V
V
EN Pin Logic High Current V
EN
= V
BIAS
= 2.5V
l
2.5 4.0 6.5 µA
EN Pin Logic Low Current V
EN
= 0V
l
0.1 µA