參數(shù)資料
型號: LQH32C
廠商: Linear Integrated Systems
英文描述: Dual Micropower DC/DC Converters with Schottky Diodes
中文描述: 雙微功率DC / DC轉(zhuǎn)換的肖特基二極管
文件頁數(shù): 2/8頁
文件大?。?/td> 193K
代理商: LQH32C
2
LT3463/LT3463A
3463f
ABSOLUTEW
(Note 1)
V
IN
, SHDN1, SHDN2 Voltage ................................... 15V
SW1, SW2, V
OUT1
Voltage ....................................... 42V
D2 Voltage............................................................. –42V
FB1, FB2 Voltage Range .............................. –0.3V to 2V
Junction Temperature...........................................125
°
C
Operating Ambient Temperature Range
(Note 2).............................................. –40
°
C to 85
°
C
Storage Temperature Range................. –65
°
C to 125
°
C
W
W
U
PACKAGE/ORDER IU
U
W
ORDER PART
NUMBER
LT3463EDD
LT3463AEDD
DD PART MARKING
ELECTRICAL CHARACTERISTICS
The
G
denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25
°
C. V
IN
= 2.5V, V
SHDN
= 2.5V unless otherwise noted.
PARAMETER
CONDITIONS
Minimum Input Voltage
Total Quiescent Current
For Both Switchers, Not Switching
Shutdown Current
V
SHDN1
= V
SHDN2
= 0V
V
REF
Pin Voltage
With 124k
to GND
V
REF
Pin Voltage Line Regulation
With 124k
to GND
FB1 Comparator Trip Voltage
High to Low Transition
FB1 Comparator Hysteresis
FB1 Line Regulation
2.5V < V
IN
< 15V
FB1 Pin Bias Current (Note 3)
V
FB1
= 1.3V
FB2 Comparator Trip Voltage
Low to High Transition
FB2 Comparator Hysteresis
FB2 Line Regulation (V
REF
– V
FB2
)
2.5V < V
IN
< 15V
FB2 Pin Bias Current (Note 4)
V
FB2
= –0.1V
SW1 Switch Off Time
V
OUT1
– V
IN
= 4V
V
OUT1
– V
IN
= 0V
SW2 Switch Off Time
V
FB2
< 0.1V
V
FB2
= 1V
Switch V
CESAT
(SW1, SW2)
I
SW
= 150mA
Switch Current Limit
(SW1)
Switch Current Limit (SW2)
LT3463
LT3463A
Swith Leakage Current
(SW1, SW2)
Switch Off, V
SW
= 42V
Schottky Forward Voltage (V
OUT1
, D2)
I
D
= 150mA
Schottky Reverse Leakage Current
V
OUT1
– V
SW
= 42V
V
D2
= –42V
SHDN1 Pin Current
V
SHDN1
= 2.5V
SHDN2 Pin Current
V
SHDN2
= 2.5V
SHDN1/SHDN2 Start-Up Threshold
MIN
TYP
2.2
40
0.1
1.25
0.05
1.25
8
0.05
20
3
8
0.05
20
300
1.5
300
1.5
180
250
250
400
0.01
750
1
1
4
4
1
MAX
2.4
60
1
1.27
0.10
1.275
UNITS
V
μ
A
μ
A
V
G
1.23
%/V
G
1.225
V
mV
%/V
nA
mV
mV
%/V
nA
ns
μ
s
ns
μ
s
mV
mA
mA
mA
μ
A
mV
μ
A
μ
A
μ
A
μ
A
0.10
50
12
G
G
0
0.10
50
G
180
180
320
320
320
460
1
5
5
10
10
1.5
0.3
V
Note 1:
Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2:
The LT3463/LT3463A are guaranteed to meet performance
specifications from 0
°
C to 70
°
C. Specifications over the –40
°
C to 85
°
C
T
JMAX
= 125
°
C,
θ
JA
= 43
°
C/W,
θ
JC
= 3
°
C/W
EXPOSED PAD (PIN 11) IS GND
AND MUST BE SOLDERED TO PCB
LAFC
LBJK
Consult LTC Marketing for parts specified with wider operating temperature ranges.
TOP VIEW
DD PACKAGE
10-LEAD (3mm
×
3mm) PLASTIC DFN
10
9
8
6
7
4
5
3
2
1
FB1
SHDN1
SHDN2
V
REF
FB2
V
OUT1
SW1
V
IN
SW2
D2
11
operating ambient temperature range are assured by design,
characterization and correlation with statistical process controls.
Note 3:
Bias current flows into the FB1 pin.
Note 4:
Bias current flows out of the FB2 pin.
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