(Note 2) ............................................. –40°C to 125°C
Storage Temperature Range
FE Package ........................................ –65°C to 150°C
DE Package ........................................ –65°C to 125°C
Lead Temperature (Soldering, 10 sec) .................. 300°C
(FE package only)
PIN CONFIGURATION
TOP VIEW
TOP VIEW
BYP1
OUT1
OUT1
GND
OUT2
BYP2
1
2
3
13
4
5
6
12 ADJ1
11
SHDN1
10 IN
9
8
7
IN
SHDN2
ADJ2
GND
BYP1
OUT1
OUT1
GND
OUT2
BYP2
GND
DE12 PACKAGE
12-LEAD (4mm 3mm) PLASTIC DFN
T
JMAX
= 150°C,
θ
JA
= 40°C/W,
θ
JC
= 10°C/W
EXPOSED PAD (PIN 13) IS GND, MUST BE SOLDERED TO PCB
1
2
3
4
5
6
7
8
17
16 GND
15 ADJ1
14
SHDN1
13 IN
12 IN
11
SHDN2
10 ADJ2
9
GND
FE PACKAGE
16-LEAD PLASTIC TSSOP
T
JMAX
= 150°C,
θ
JA
= 38°C/W,
θ
JC
= 8°C/W
EXPOSED PAD (PIN 17) IS GND, MUST BE SOLDERED TO PCB
ORDER INFORMATION
LEAD FREE FINISH
LT3024EDE#PBF
LT3024IDE#PBF
LT3024EFE#PBF
LT3024IFE#PBF
LEAD BASED FINISH
LT3024EDE
LT3024IDE
LT3024EFE
LT3024IFE
TAPE AND REEL
LT3024EDE#TRPBF
LT3024IDE#TRPBF
LT3024EFE#TRPBF
LT3024IFE#TRPBF
TAPE AND REEL
LT3024EDE#TR
LT3024IDE#TR
LT3024EFE#TR
LT3024IFE#TR
PART MARKING*
3024
3024
3024EFE
3024IFE
PART MARKING*
3024
3024
3024EFE
3024IFE
PACKAGE DESCRIPTION
12-Lead (4mm
×
3mm) Plastic DFN
12-Lead (4mm
×
3mm) Plastic DFN
16-Lead Plastic TSSOP
16-Lead Plastic TSSOP
PACKAGE DESCRIPTION
12-Lead (4mm
×
3mm) Plastic DFN
12-Lead (4mm
×
3mm) Plastic DFN
16-Lead Plastic TSSOP
16-Lead Plastic TSSOP
TEMPERATURE RANGE
–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
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/
3024fa
2
LT3024
ELECTRICAL CHARACTERISTICS
PARAMETER
Minimum Input Voltage
(Notes 3, 11)
ADJ1, ADJ2 Pin Voltage
(Note 3, 4)
Line Regulation (Note 3)
Load Regulation (Note 3)
CONDITIONS
Output 2, I
LOAD
= 100mA
Output 1, I
LOAD
= 500mA
V
IN
= 2V, I
LOAD
= 1mA
Output 2, 2.3V < V
IN
< 20V, 1mA < I
LOAD
< 100mA
Output 1, 2.3V < V
IN
< 20V, 1mA < I
LOAD
< 500mA
ΔV
IN
= 2V to 20V, I
LOAD
= 1mA
Output 2, V
IN
= 2.3V, ΔI
LOAD
= 1mA to 100mA
V
IN
= 2.3V, ΔI
LOAD
= 1mA to 100mA
Output 1, V
IN
= 2.3V, ΔI
LOAD
= 1mA to 500mA
V
IN
= 2.3V, ΔI
LOAD
= 1mA to 500mA
Dropout Voltage (Output 2)
V
IN
= V
OUT(NOMINAL)
(Notes 5, 6, 11)
I
LOAD
= 1mA
I
LOAD
= 1mA
I
LOAD
= 10mA
I
LOAD
= 10mA
I
LOAD
= 50mA
I
LOAD
= 50mA
I
LOAD
= 100mA
I
LOAD
= 100mA
Dropout Voltage (Output 1)
V
IN
= V
OUT(NOMINAL)
(Notes 5, 6, 11)
I
LOAD
= 10mA
I
LOAD
= 10mA
I
LOAD
= 50mA
I
LOAD
= 50mA
I
LOAD
= 100mA
I
LOAD
= 100mA
I
LOAD
= 500mA
I
LOAD
= 500mA
GND Pin Current (Output 2)
V
IN
= V
OUT(NOMINAL)
(Notes 5, 7)
I
LOAD
= 0mA
I
LOAD
= 1mA
I
LOAD
= 10mA
I
LOAD
= 50mA
I
LOAD
= 100mA
I
LOAD
= 0mA
I
LOAD
= 1mA
I
LOAD
= 50mA
I
LOAD
= 100mA
I
LOAD
= 250mA
I
LOAD
= 500mA
C
OUT
= 10μF C
BYP
= 0.01μF I
LOAD
= Full Current,
,
,
BW = 10Hz to 100kHz
ADJ1, ADJ2 (Notes 3, 8)
V
OUT
= Off to On
V
OUT
= On to Off
V
SHDN1
, V
SHDN2
= 0V
V
SHDN1
, V
SHDN2
= 20V
V
IN
= 6V, V
SHDN1
= 0V, V
SHDN2
= 0V
V
IN
= 2.72V (Avg), V
RIPPLE
= 0.5V
P-P
, f
RIPPLE
= 120Hz,
I
LOAD
= Full Current
55
l
l
l
l
l
l
l
l
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. (Note 2)
MIN
TYP
1.8
1.8
1.205
1.190
1.190
1.220
1.220
1.220
1
1
1
0.10
0.17
0.24
0.30
0.13
0.17
0.20
0.30
20
55
230
1
2.2
30
65
1.1
2
5
11
20
30
0.25
0.8
0.65
0
1
0.01
65
100
1.4
0.5
3
0.1
MAX
2.3
2.3
1.235
1.250
1.250
10
12
25
12
25
0.15
0.19
0.22
0.29
0.31
0.40
0.35
0.45
0.19
0.25
0.22
0.32
0.34
0.44
0.35
0.45
45
90
400
2
4
75
120
1.6
3
8
16
UNITS
V
V
V
V
V
mV
mV
mV
mV
mV
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
μA
μA
μA
mA
mA
μA
μA
mA
mA
mA
mA
μV
RMS
nA
V
V
μA
μA
μA
dB
GND Pin Current (Output 1)
V
IN
= V
OUT(NOMINAL)
(Notes 5, 7)
Output Voltage Noise
ADJ Pin Bias Current
Shutdown Threshold
SHDN1/SHDN2
Pin Current
(Note 9)
Quiescent Current in Shutdown
Ripple Rejection
3024fa
3
LT3024
ELECTRICAL CHARACTERISTICS
PARAMETER
Current Limit
CONDITIONS
Output 2, V
IN
= 7V, V
OUT
= 0V
V
IN
= 2.3V, ΔV
OUT
= –0.1V
Output 1, V
IN
= 7V, V
OUT
= 0V
V
IN
= 2.3V, ΔV
OUT
= –0.1V
Input Reverse Leakage Current
V
IN
= –20V, V
OUT
= 0V
Reverse Output Current (Notes 3,10) V
OUT
= 1.22V, V
IN
< 1.22V
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:
The LT3024 is tested and specified under pulse load conditions
such that T
J
≅
T
A
. The LT3024E is 100% tested at T
A
= 25°C. Performance
at – 40°C and 125°C is assured by design, characterization and correlation
with statistical process controls. The LT3024I is guaranteed over the full
–40°C to 125°C operating junction temperature range.
Note 3:
The LT3024 is tested and specified for these conditions with the
ADJ1/ADJ2 pin connected to the corresponding OUT1/OUT2 pin.
Note 4:
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 5:
To satisfy requirements for minimum input voltage, the LT3024 is
tested and specified for these conditions with an external resistor divider
(two 250k resistors) for an output voltage of 2.44V. The external resistor
divider will add a 5μA DC load on the output.
l
l
l
The
l
denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. (Note 2)
MIN
110
700
520
1
5
10
TYP
200
MAX
UNITS
mA
mA
mA
mA
mA
μA
Note 6:
Dropout voltage is the 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
IN
– V
DROPOUT
.
Note 7:
GND pin current is tested with V
IN
= 2.44V and a current source
load. This means the device is tested while operating in its dropout region
or at the minimum input voltage specification. This is the worst-case GND
pin current. The GND pin current will decrease slightly at higher input
voltages. Total GND pin current is equal to the sum of GND pin currents
from Output 1 and Output 2.
Note 8:
ADJ1 and ADJ2 pin bias current flows into the pin.
Note 9:
SHDN1
and
SHDN2
pin current flows into the pin.
Note 10:
Reverse output current is tested with the IN pin grounded and the
OUT pin forced to the rated output voltage. This current flows into the OUT
pin and out the GND pin.
Note 11:
For the LT3024 dropout voltage will be limited by the minimum
input voltage specification under some output voltage/load conditions.
See the curve of Minimum Input Voltage in the Typical Performance
嵌入式系统
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