Datasheet

LTC3026
3
3026ff
elecTrical characTerisTics
The l denotes the specifications which apply over the full operating junction temperature range, otherwise specifications are at
T
J
= 25°C. V
IN
= 1.5V, V
OUT
= 1.2V, C
IN
= C
BST
= 4.7µF, C
OUT
= 10µF (all capacitors ceramic) unless otherwise noted.
(BOOST ENABLED, L
SW
= 10µH)
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
V
IN
Operating Voltage (Note 2)
l
1.14 5.5 V
I
IN
Operating Current I
OUT
= 100µA, V
SHDN
= V
IN
, 1.2V ≤ V
IN
≤ 5V
l
95 200 µA
I
INSHDN
Shutdown Current V
SHDN
= 0V, V
IN
= 3.5V
l
0.6 20 µA
V
BST
Boost Operating Voltage (Note 7) V
SHDN
= V
IN
l
4.5 5 5.5 V
V
BSTUVLO
Undervoltage Lockout
l
4.0 4.25 4.4 V
I
BST
Boost Operating Current I
OUT
= 100µA, V
SHDN
= V
IN
l
175 275 µA
I
BSTSHDN
Boost Shutdown Current V
SHDN
= 0V 1 5 µA
The l denotes the specifications which apply over the full operating junction temperature range, otherwise specifications are at
T
J
= 25°C. V
IN
= 1.5V, V
OUT
= 1.2V, V
BST
= 5V, C
IN
= C
BST
= 1µF, C
OUT
= 10µF (all capacitors ceramic) unless otherwise noted.
(BOOST DISABLED, V
SW
= 0V or Floating)
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
V
ADJ
Regulation Voltage (Note 5) 1mA ≤ I
OUT
≤ 1.5A, 1.14V ≤ V
IN
≤ 3.5V, V
BST
= 5V, V
OUT
= 0.8V
1mA ≤ I
OUT
≤ 1.5A, 1.14V ≤ V
IN
≤ 3.5V, V
BST
= 5V, V
OUT
= 0.8V
l
0.397
0.395
0.4
0.4
0.403
0.405
V
V
OUT Programming Range
l
0.4 2.6 V
Dropout Voltage (Note 6) V
IN
= 1.5V, V
ADJ
= 0.38, I
OUT
= 1.5A
l
100 250 mV
I
ADJ
ADJ Input Current V
ADJ
= 0.4V
l
–100 100 nA
I
OUT
Continuous Output Current V
SHDN
= V
IN
l
1.5 A
I
LIM
Output Current Current Limit 3 A
e
n
Output Voltage Noise f = 10Hz to 100kHz, I
L
= 800mA
Boost Disabled
Boost Enabled
110
210
µV
RMS
µV
RMS
The l denotes the specifications which apply over the full operating junction temperature range, otherwise specifications are at
T
J
= 25°C. V
IN
= 1.5V, V
OUT
= 1.2V, C
IN
= C
BST
= 1µF, C
OUT
= 10µF (all capacitors ceramic) unless otherwise noted.
(BOOST ENABLED or DISABLED)
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
V
IN
Operating Voltage (Note 2)
l
1.14 3.5 V
I
IN
Operating Current I
OUT
= 0mA, V
OUT
= 0.8V, V
SHDN
= V
IN
, V
IN
= 1.2V
I
OUT
= 0mA, V
OUT
= 1.2V, V
SHDN
= V
IN
, V
IN
= 1.5V
I
OUT
= 0mA, V
OUT
= 1.2V, V
SHDN
= V
IN
, V
IN
= 2.5V
I
OUT
= 0mA, V
OUT
= 1.2V, V
SHDN
= V
IN
, V
IN
= 3.5V
1160
950
640
400
µA
µA
µA
µA
I
INSHDN
Shutdown Current V
SHDN
= 0V, V
IN
= 3.5V
l
0.6 20 µA
Inductor Size Requirement
Inductor Peak Current Requirement
4.7
150
10 40 µH
mA
V
BST
Boost Output Voltage Range V
SHDN
= V
IN
4.8 5 5.2 V
V
BSTUVLO
Boost Undervoltage Lockout
l
4.0 4.2 4.4 V
Boost Output Drive (Note 3) V
IN
< 1.4V
V
IN
≥ 1.4V
7
10
mA
mA