LTC3026EMSE-1#PBF Linear Technology, LTC3026EMSE-1#PBF Datasheet - Page 4

• Manufacturer Part Number: LTC3026EMSE-1#PBF
• Description: 1.5a vldo in dfn... ic reg ldo adj 1.5a...
• Manufacturer: Linear Technology

elecTrical characTerisTics
LTC3026
The
T
SYMBOL PARAMETER
V
V
I
I
V
I
PG
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. This IC has overtemperature protection that is
intended to protect the device during momentary overload conditions.
Junction temperatures will exceed 125°C when overtemperature is active.
Continuous operation above the specified maximum operating junction
temperature may impair device reliability.
Note 2: Minimum Operating Voltage required for regulation is:
Note 3: When using BST to drive loads other than LTC3026s, the load
must be high impedance during start-up (i.e. prior to PG going high).
Note 4: PG threshold expressed as a percentage difference from the
“V
Note 5: Operating conditions are limited by maximum junction temperature.
The regulated output voltage specification 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.
Typical perForMance characTerisTics
4
IHSHDN
ILSHDN
OHPG
J
IHSHDN
ILSHDN
OLPG
V
ADJ
= 25°C. V
IN
1.50
1.25
1.00
0.75
0.50
0.25
l
≥ V
Regulation Voltage” as given in the table.
0
denotes the specifications which apply over the full operating junction temperature range, otherwise specifications are at
1.0
IN Supply Current with Boost
Converter Enabled
OUT(MIN)
SHDN Input High Voltage
SHDN Input Low Voltage
SHDN Input High Current
SHDN Input Low Current
PG Output Low Voltage
PG Output High Leakage Current V
Output Threshold (Note 4)
IN
1.5
= 1.5V, V
–40°C
+ V
25°C
85°C
DROPOUT
2.0
V
IN
OUT
(V)
2.5
= 1.2V, C
3.0
IN
= C
3026 G01
CONDITIONS
1.14V ≤ V
3.5V ≤ V
1.14V ≤ V
SHDN = V
SHDN = 0V
I
PG High to Low
PG Low to High
3.5
PG
BST
PG
= 2mA
= 5.5V
= 1µF , C
IN
IN
IN
IN
200
150
100
≤ 5.5V
50
≤ 3.5V
≤ 5.5V
0
1.0
BST Supply Current with Boost
Converter Disabled
OUT
1.5 2.0 2.5
= 10µF (all capacitors ceramic) unless otherwise noted.
(BOOST ENABLED or DISABLED)
3.0
V
IN
Note 6: Dropout voltage is minimum input to output voltage differential
needed to maintain regulation at a specified output current. In dropout, the
output voltage will be equal to V
Note 7: To maintain correct regulation
Note 8: The LTC3026 is tested under pulsed load conditions such
that T
0°C to 125°C junction temperature. Specifications over the –40°C to
125°C operating junction temperature range are assured by design,
characterization and correlation with statistical process controls. The
LTC3026I is guaranteed over the –40°C to 125°C operating junction
temperature range. Note that the maximum ambient temperature
consistent with these specifications is determined by specific operating
conditions in conjunction with board layout, the rated package thermal
impedance and other environmental factors. The junction temperature
(T
power dissipation (P
(V)
3.5
J
, in °C) is calculated from the ambient temperature (T
V
T
impedance.
OUT
J
J
4.0 4.5 5.0
= T
≈ T
≤ V
A
V
A
BST
+ (P
. The LTC3026E is guaranteed to meet specifications from
BST
–40°C
125°C
25°C
85°C
= 5V
D
– 2.4V
3026 G02
• θ
5.5
JA
D
, in watts) according to the formula:
), where θ
200
150
100
50
l
l
l
l
0
IN
JA
1.0
IN Supply Current with Boost
Converter Disabled
– V
(in °C/W) is the package thermal
1.5 2.0 2.5
DROPOUT
MIN
–12
–10
1.0
1.2
–1
–1
.
0.01
TYP
0.1
–9
–7
3.0
V
IN
(V)
3.5
A
, in °C) and
4.0 4.5 5.0
MAX
0.4
0.4
–6
–4
1
1
1
V
BST
–40°C
125°C
25°C
85°C
= 5V
UNITS
3026 G03
3026ff
5.5
µA
µA
µA
%
%
V
V
V
V