EXPOSED PAD (PIN 7) IS GND, MUST BE SOLDERED TO PCB
*ADJ FOR LTC3025-1, SENSE FOR LTC3025-2, LTC3025-3, LTC3025-4
ORDER INFORMATION
LEAD FREE FINISH
LTC3025EDC-1#PBF
LTC3025IDC-1#PBF
LTC3025EDC-2#PBF
LTC3025IDC-2#PBF
LTC3025EDC-3#PBF
LTC3025IDC-3#PBF
LTC3025EDC-4#PBF
LTC3025IDC-4#PBF
LEAD BASED FINISH
LTC3025EDC-1
LTC3025IDC-1
LTC3025EDC-2
LTC3025IDC-2
LTC3025EDC-3
LTC3025IDC-3
LTC3025EDC-4
LTC3025IDC-4
TAPE AND REEL
LTC3025EDC-1#TRPBF
LTC3025IDC-1#TRPBF
LTC3025EDC-2#TRPBF
LTC3025IDC-2#TRPBF
LTC3025EDC-3#TRPBF
LTC3025IDC-3#TRPBF
LTC3025EDC-4#TRPBF
LTC3025IDC-4#TRPBF
TAPE AND REEL
LTC3025EDC-1#TR
LTC3025IDC-1#TR
LTC3025EDC-2#TR
LTC3025IDC-2#TR
LTC3025EDC-3#TR
LTC3025IDC-3#TR
LTC3025EDC-4#TR
LTC3025IDC-4#TR
PART MARKING*
LDDW
LDDW
LDMK
LDMK
LDQS
LDQS
LDPQ
LDPQ
PART MARKING*
LDDW
LDDW
LDMK
LDMK
LDQS
LDQS
LDPQ
LDPQ
PACKAGE DESCRIPTION
6-Lead (2mm
×
2mm) Plastic DFN
6-Lead (2mm
×
2mm) Plastic DFN
6-Lead (2mm
×
2mm) Plastic DFN
6-Lead (2mm
×
2mm) Plastic DFN
6-Lead (2mm
×
2mm) Plastic DFN
6-Lead (2mm
×
2mm) Plastic DFN
6-Lead (2mm
×
2mm) Plastic DFN
6-Lead (2mm
×
2mm) Plastic DFN
PACKAGE DESCRIPTION
6-Lead (2mm
×
2mm) Plastic DFN
6-Lead (2mm
×
2mm) Plastic DFN
6-Lead (2mm
×
2mm) Plastic DFN
6-Lead (2mm
×
2mm) Plastic DFN
6-Lead (2mm
×
2mm) Plastic DFN
6-Lead (2mm
×
2mm) Plastic DFN
6-Lead (2mm
×
2mm) Plastic DFN
6-Lead (2mm
×
2mm) Plastic DFN
TEMPERATURE RANGE
–40°C to 125°C
–40°C to 125°C
–40°C to 125°C
–40°C to 125°C
–40°C to 125°C
–40°C to 125°C
–40°C to 125°C
–40°C to 125°C
TEMPERATURE RANGE
–40°C to 125°C
–40°C to 125°C
–40°C to 125°C
–40°C to 125°C
–40°C to 125°C
–40°C to 125°C
–40°C to 125°C
–40°C to 125°C
Consult LTC Marketing for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container.
For more information on lead free part marking, go to:
http://www.linear.com/leadfree/
For more information on tape and reel specifications, go to:
http://www.linear.com/tapeandreel/
The
l
denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. V
IN
= 1.5V, V
BIAS
= 3.6V, C
OUT
= 1μF C
IN
= 0.1μF C
BIAS
= 0.1μF
,
,
(all capacitors ceramic) unless otherwise noted.
PARAMETER
V
IN
Operating Voltage (Note 4)
CONDITIONS
LTC3025-1
LTC3025-2
LTC3025-3
LTC3025-4
l
l
l
l
ELECTRICAL CHARACTERISTICS
MIN
0.9
1.4
1.7
2.0
TYP
MAX
5.5
5.5
5.5
5.5
UNITS
V
V
V
V
30251234fc
2
LTC3025-1/LTC3025-2/
LTC3025-3/LTC3025-4
ELECTRICAL CHARACTERISTICS
PARAMETER
V
BIAS
Operating Voltage (Note 4)
CONDITIONS
LTC3025-1
LTC3025-2
LTC3025-3
LTC3025-4
V
BIAS
Undervoltage Lockout
V
IN
Operating Current
V
IN
Operating Current
V
BIAS
Operating Current
V
BIAS
Operating Current
V
IN
Shutdown Current
V
BIAS
Shutdown Current
V
ADJ
Regulation Voltage (Note 5)
V
SENSE
Regulation Voltage (Note 5)
V
SENSE
Regulation Voltage (Note 5)
V
SENSE
Regulation Voltage (Note 5)
I
ADJ
ADJ Input Current
OUT Load Regulation
I
OUT
= 10μA, V
OUT
= 1.2V, LTC3025-1
I
OUT
= 0μA, LTC3025-2/LTC3025-3/LTC3025-4
I
OUT
= 10μA, V
OUT
= 1.2V, LTC3025-1
I
OUT
= 0μA, LTC3025-2/LTC3025-3/LTC3025-4
V
SHDN
= 0V
V
SHDN
= 0V
1mA ≤ I
OUT
≤ 500mA, V
OUT
= 1.2V, 1.5V ≤ V
IN
≤ 5V, LTC3025-1
1mA ≤ I
OUT
≤ 500mA, V
OUT
= 1.2V, 1.5V ≤ V
IN
≤ 5V, LTC3025-1
1mA ≤ I
OUT
≤ 500mA, 1.5V ≤ V
IN
≤ 5V, LTC3025-2
1mA ≤ I
OUT
≤ 500mA, 1.5V ≤ V
IN
≤ 5V, LTC3025-2
1mA ≤ I
OUT
≤ 500mA, 1.7V ≤ V
IN
≤ 5V, LTC3025-3
1mA ≤ I
OUT
≤ 500mA, 1.7V ≤ V
IN
≤ 5V, LTC3025-3
1mA ≤ I
OUT
≤ 500mA, 2.0V ≤ V
IN
≤ 5V, LTC3025-4
1mA ≤ I
OUT
≤ 500mA, 2.0V ≤ V
IN
≤ 5V, LTC3025-4
V
ADJ
= 0.45V, LTC3025-1
ΔI
OUT
= 1mA to 500mA, LTC3025-2
ΔI
OUT
= 1mA to 500mA, LTC3025-3
ΔI
OUT
= 1mA to 500mA, LTC3025-4
V
IN
= 1.5V to 5V, V
BIAS
= 3.6V, V
OUT
= 1.2V,
I
OUT
= 1mA, LTC3025-1
V
IN
= 1.5V to 5V, V
BIAS
= 3.6V, I
OUT
= 1mA, LTC3025-2
V
IN
= 1.8V to 5V, V
BIAS
= 3.6V, I
OUT
= 1mA, LTC3025-3
V
IN
= 2.1V to 5V, V
BIAS
= 3.6V, I
OUT
= 1mA, LTC3025-4
V
IN
= 1.5V, V
BIAS
= 2.7V to 5V, V
OUT
= 1.2V, I
OUT
= 1mA,
LTC3025-1
V
IN
= 1.5V, V
BIAS
= 2.7V to 5V, I
OUT
= 1mA, LTC3025-2
V
IN
= 1.8V, V
BIAS
= 3.0V to 5V, I
OUT
= 1mA, LTC3025-3
V
IN
= 2.1V, V
BIAS
= 3.3V to 5V, I
OUT
= 1mA, LTC3025-4
V
BIAS
= 2.8V, V
IN
= 1.5V, I
OUT
= 500mA,
V
ADJ
= 0.37V(LTC3025-1), V
SENSE
= 1.15V(LTC3025-2)
V
BIAS
= 3.1V, V
IN
= 1.7V, I
OUT
= 500mA,
V
SENSE
= 1.45V(LTC3025-3)
V
BIAS
= 3.4V, V
IN
= 2.0V, I
OUT
= 500mA,
V
SENSE
= 1.75V(LTC3025-4)
LTC3025-1
V
ADJ
= 0V(LTC3025-1),
V
SENSE
= 0V(LTC3025-2/LTC3025-3/LTC3025-4)
f = 10Hz to 100kHz, I
OUT
= 300mA
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
The
l
denotes the specifications which apply over the full operating
,
,
temperature range, otherwise specifications are at T
A
= 25°C. V
IN
= 1.5V, V
BIAS
= 3.6V, C
OUT
= 1μF C
IN
= 0.1μF C
BIAS
= 0.1μF
(all capacitors ceramic) unless otherwise noted.
MIN
2.5
2.7
3.0
3.3
2.2
4
4
50
50
1
0.01
0.395
0.392
1.185
1.176
1.481
1.470
1.777
1.764
–50
0.4
0.4
1.2
1.2
1.5
1.5
1.8
1.8
0
–0.35
–1
–1.3
–1.5
0.07
0.21
0.26
0.32
4.5
4.5
4.5
4.5
85
90
90
16.5
16.5
16.5
16.5
120
170
130
185
130
185
1.5
500
1130
80
TYP
MAX
5.5
5.5
5.5
5.5
2.5
10
10
80
80
5
1
0.405
0.408
1.215
1.224
1.519
1.530
1.823
1.836
50
UNITS
V
V
V
V
V
μA
μA
μA
μA
μA
μA
V
V
V
V
V
V
V
V
nA
mV
mV
mV
mV
mV
mV
mV
mV
mV
mV
mV
mV
mV
mV
mV
mV
mV
mV
V
mA
mA
μV
RMS
30251234fc
OUT Load Regulation (Referred to ADJ Pin)
ΔI
OUT
= 1mA to 500mA, LTC3025-1
V
IN
Line Regulation (Referred to ADJ Pin)
V
IN
Line Regulation
V
BIAS
Line Regulation
V
BIAS
Line Regulation
V
IN
to V
OUT
Dropout Voltage (Notes 4, 6)
V
IN
to V
OUT
Dropout Voltage (Notes 4, 6)
V
IN
to V
OUT
Dropout Voltage (Notes 4, 6)
V
BIAS
to V
OUT
Dropout Voltage (Note 4)
I
OUT
Continuous Output Current
I
OUT
Current Limit
e
n
Output Voltage Noise
3
LTC3025-1/LTC3025-2/
LTC3025-3/LTC3025-4
The
l
denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. V
IN
= 1.5V, V
BIAS
= 3.6V, C
OUT
= 1μF C
IN
= 0.1μF C
BIAS
= 0.1μF
,
,
(all capacitors ceramic) unless otherwise noted.
PARAMETER
V
IH
SHDN
Input High Voltage
V
IL
SHDN
Input Low Voltage
I
IH
SHDN
Input High Current
I
L
SHDN
Input Low Current
SHDN
= 1.2V
SHDN
= 0V
CONDITIONS
l
l
ELECTRICAL CHARACTERISTICS
MIN
0.9
TYP
MAX
0.3
UNITS
V
V
μA
μA
–1
–1
1
1
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.
Note 2:
This IC includes overtemperature protection that is intended
to protect the device during momentary overload conditions. Junction
temperature will exceed 125°C when overtemperature protection is active.
Continuous operation above the specified maximum operating junction
temperature may impair device reliability.
Note 3:
The LTC3025-X regulators are tested and specified under pulse
load conditions such that T
J
≈ T
A
. The LTC3025E-X are guaranteed to
meet performance specifications from 0°C and 125°C. Specifications over
the –40°C to 125°C operating junction temperature range are assured by
design, characterization and correlation with statistical process controls.
The LTC3025I-X are guaranteed to meet performance specifications over
the full –40°C to 125°C operating junction temperature range.
Note 4:
For the LTC3025-1, a regulated output voltage will only be available
when the minimum IN and BIAS operating voltages as well as the IN to
OUT and BIAS to OUT dropout voltages are all satisfied. For the
LTC3025-2/LTC3025-3/LTC3025-4 the minimum IN operating voltage
assumes I
OUT
= 500mA. For correct regulation at I
OUT
< 500mA the
minimum IN operating voltage decreases to the maximum V
SENSE
Regulation Voltage as I
OUT
decreases to 0mA (i.e. V
INMIN
= 1.312V at I
OUT
= 250mA for the LTC3025-2).
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.
Note 6:
Dropout voltage is minimum input to output voltage differential
needed to maintain regulation at a specified output current. In dropout, the
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