(Note 2) ............................................. –40°C to 125°C
Storage Temperature Range................... –65°C to 150°C
Lead Temperature (Soldering, 10 sec) .................. 300°C
(MSE package only)
PIN CONFIGURATION
TOP VIEW
TOP VIEW
BYP2
ADJ2
GND
ADJ1
BYP1
1
2
3
4
5
11
10 OUT2
9
SHDN2
8 IN
7
SHDN1
6 OUT1
BYP2
ADJ2
GND
ADJ1
BYP1
1
2
3
4
5
10
9
8
7
6
OUT2
SHDN2
IN
SHDN1
OUT1
11
DD PACKAGE
10-LEAD (3mm 3mm) PLASTIC DFN
T
JMAX
= 125°C,
θ
JA
= 40°C/W,
θ
JC
= 10°C/W
EXPOSED PAD (PIN 11) IS GND, MUST BE SOLDERED TO PCB
MSE PACKAGE
10-LEAD PLASTIC MSOP
T
JMAX
= 150°C,
θ
JA
= 40°C/W,
θ
JC
= 10°C/W
EXPOSED PAD (PIN 11) IS GND, MUST BE SOLDERED TO PCB
ORDER INFORMATION
LEAD FREE FINISH
LT3023EDD#PBF
LT3023IDD#PBF
LT3023EMSE#PBF
LT3023IMSE#PBF
LEAD BASED FINISH
LT3023EDD
LT3023IDD
LT3023EMSE
LT3023IMSE
TAPE AND REEL
LT3023EDD#TRPBF
LT3023IDD#TRPBF
LT3023EMSE#TRPBF
LT3023IMSE#TRPBF
TAPE AND REEL
LT3023EDD#TR
LT3023IDD#TR
LT3023EMSE#TR
LT3023IMSE#TR
PART MARKING*
LAJA
LAJA
LTAHZ
LTAHZ
PART MARKING*
LAJA
LAJA
LTAHZ
LTAHZ
PACKAGE DESCRIPTION
10-Lead (3mm
×
3mm) Plastic DFN
10-Lead (3mm
×
3mm) Plastic DFN
10-Lead Plastic MSOP
10-Lead Plastic MSOP
PACKAGE DESCRIPTION
10-Lead (3mm
×
3mm) Plastic DFN
10-Lead (3mm
×
3mm) Plastic DFN
10-Lead Plastic MSOP
10-Lead Plastic MSOP
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/
The
l
denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. (Note 2)
PARAMETER
Minimum Input Voltage
(Notes 3, 11)
ADJ1, ADJ2 Pin Voltage
(Note 3, 4)
CONDITIONS
I
LOAD
= 100mA
V
IN
= 2V, I
LOAD
= 1mA
2.3V < V
IN
< 20V, 1mA < I
LOAD
< 100mA
l
ELECTRICAL CHARACTERISTICS
MIN
TYP
1.8
MAX
2.3
1.235
1.250
UNITS
V
V
V
3023fa
l
1.205
1.190
1.220
1.220
2
LT3023
ELECTRICAL CHARACTERISTICS
PARAMETER
Line Regulation (Note 3)
Load Regulation (Note 3)
Dropout Voltage
V
IN
= V
OUT(NOMINAL)
(Notes 5, 6, 11)
CONDITIONS
ΔV
IN
= 2V to 20V, I
LOAD
= 1mA
V
IN
= 2.3V, ΔI
LOAD
= 1mA to 100mA
V
IN
= 2.3V, ΔI
LOAD
= 1mA to 100mA
I
LOAD
= 1mA
I
LOAD
= 1mA
I
LOAD
= 10mA
I
LOAD
= 10mA
I
LOAD
= 50mA
I
LOAD
= 50mA
I
LOAD
= 100mA
I
LOAD
= 100mA
GND Pin Current (Per Channel)
V
IN
= V
OUT(NOMINAL)
(Notes 5, 7)
I
LOAD
= 0mA
I
LOAD
= 1mA
I
LOAD
= 10mA
I
LOAD
= 50mA
I
LOAD
= 100mA
C
OUT
= 10μF C
BYP
= 0.01μF I
LOAD
= 100mA, BW = 10Hz to 100kHz
,
,
(Notes 3, 8)
V
OUT
= Off to On
V
OUT
= On to Off
V
SHDN
= 0V
V
SHDN
= 20V
V
IN
= 6V, V
SHDN
= 0V (Both
SHDN
Pins)
V
IN
= 2.72V (Avg), V
RIPPLE
= 0.5V
P-P
, f
RIPPLE
= 120Hz,
I
LOAD
= 50mA
V
IN
= 7V, V
OUT
= 0V
V
IN
= 2.3V, ΔV
OUT
= –5%
V
IN
= –20V, V
OUT
= 0V
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
1
0.10
0.17
0.24
0.30
20
55
230
1
2.2
20
30
0.25
0.8
0.65
0
1
0.01
55
65
200
110
1
5
10
100
1.4
0.5
3
0.1
MAX
10
12
25
0.15
0.19
0.22
0.29
0.28
0.38
0.35
0.45
45
100
400
2
4
UNITS
mV
mV
mV
V
V
V
V
V
V
V
V
μA
μA
μA
mA
mA
μV
RMS
nA
V
V
μA
μA
μA
dB
mA
mA
mA
μA
Output Voltage Noise
ADJ1/ADJ2 Pin Bias Current
Shutdown Threshold
SHDN1/SHDN2
Pin Current
(Note 9)
Quiescent Current in Shutdown
Ripple Rejection (Note 3)
Current Limit
Input Reverse Leakage Current
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 LT3023 is tested and specified under pulse load conditions
such that T
J
≅
T
A
. The LT3023E 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 LT3023I is guaranteed over the full
–40°C to 125°C operating junction temperature range.
Note 3:
The LT3023 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 LT3023 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.
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.
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 LT3023 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
1. Introduction
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DSP 与 ARM 处理器
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