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參數(shù)資料
| 型號(hào)： | LTC3427EDC#PBF |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類(lèi)： | 穩(wěn)壓器 |
| 英文描述： | 0.5 A SWITCHING REGULATOR, 1500 kHz SWITCHING FREQ-MAX, PDSO6 |
| 封裝： | 2 X 2 MM, LEAD FREE, PLSTIC, DFN-6 |
| 文件頁(yè)數(shù)： | 6/12頁(yè) |
| 文件大小： | 202K |
| 代理商： | LTC3427EDC#PBF |
3
LTC3427
3427fa
TYPICAL PERFOR A CE CHARACTERISTICS
UW
2-Cell Alkaline to 3.3V Efficiency
Li-Ion to 5V Efficiency
2-Cell Alkaline to 5V Efficiency
Inrush Current Control
Load Transient Response
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 LTC3427E is guaranteed to meet performance specifications
from 0
°C to 70°C. Specifications over the –40°C to 85°C operating
temperature range are assured by design, characterization and correlation
with statistical process controls.
Note 3: Current is measured into the V
OUT pin since the supply current is
bootstrapped to the output. The current will reflect to the input supply by:
(V
OUT/VIN) Efficiency. The outputs are not switching.
ELECTRICAL CHARACTERISTICS
Note 4: Specification is guaranteed by design and not 100% tested in
production.
Note 5: The LTC3427 includes an overtemperature shutdown that is
intended to protect the device during momentary overload conditions.
Junction temperature will exceed 125
°C when the overtemperature
shutdown is active. Continuous operation above the specified maximum
operating junction temperature may impair device reliability.
LOAD CURRENT (mA)
1
70
EFFICIENCY
(%)
75
80
85
90
10
100
1000
3427 G01
65
60
55
50
95
100
VIN = 3.1V
VIN = 1.8V
VIN = 2.4V
LOAD CURRENT (mA)
1
70
EFFICIENCY
(%)
75
80
85
90
10
100
1000
3427 G02
65
60
55
50
95
100
VIN = 4.2V
VIN = 3.1V
VIN = 3.6V
LOAD CURRENT (mA)
1
70
EFFICIENCY
(%)
75
80
85
90
10
100
1000
3427 G03
65
60
55
50
95
100
VIN = 3.2V
VIN = 1.8V
VIN = 2.4V
VOUT
1V/DIV
SHDN
5V/DIV
VIN = 2.4V
COUT = 22F
L = 4.7
H
500
s/DIV
3427 G04
INDUCTOR
CURRENT
100mA/DIV
VOUT
100mV/DIV
AC COUPLED
IOUT
40mA
TO 100mA
VIN = 1.8V
VOUT = 3.3V
COUT = 4.7F
L = 4.7
H
100
s/DIV
3427 G05
TA = 25°C unless otherwise specified.
10mV/DIV
500ns/DIV
VIN = 2.4V
VOUT = 3.3V
L = 4.7
H
CIN = 2.2F
COUT = 4.7F
3427 G13
ILOAD
10mA
ILOAD
50mA
ILOAD
100mA
VOUT Ripple, AC Coupled
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