參數(shù)資料
型號(hào): LTC3424
廠商: Linear Integrated Systems
英文描述: Low Output Voltage 3MHz Micropower Synchronous Boost Converters
中文描述: 低輸出電壓3MHz的微功率同步升壓轉(zhuǎn)換器
文件頁(yè)數(shù): 3/12頁(yè)
文件大小: 203K
代理商: LTC3424
3
LTC3423/LTC3424
34234f
The
G
denotes specifications that apply over the full operating temperature range, otherwise specifications are at T
A
= 25
°
C.
V
IN
= 1.2V, V
OUT
= 3.3V unless otherwise noted.
PARAMETER
CONDITIONS
SHDN Input High
V
SHDN
= V
IN
= V
OUT
SHDN Input Low
SHDN Input Current
V
SHDN
= 5.5V
Note 1:
Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2:
The LTC3423/LTC3424 are 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.
MIN
1
TYP
MAX
UNITS
V
V
0.4
1
0.01
μ
A
ELECTRICAL CHARACTERISTICS
Note 3:
Current is measured into V
DD
since the supply current is
bootstrapped to the V
DD
pin. The outputs are not switching.
Note 4:
Once the output is started, the IC is not dependant upon the V
IN
supply.
Switching Waveform on SW Pin
TYPICAL PERFOR U
Transient Response
150mA to 450mA
SW
0.5V/DIV
I
LOAD
= 500mA
V
OUT
1.8V
100ns/DIV
3423/24 G01
I
OUT
C
= 44
μ
F
L = 2.2
μ
H
f
OSC
= 1MHz
200
μ
s/DIV
3423/24 G02
V
100mV/DIV
AC COUPLED
450mA
150mA
Burst Mode Operation
at 500
μ
A Load
Burst Mode Operation
at 10mA Load
V
100mV/DIV
AC COUPLED
V
IN
= 1.2V
V
OUT
= 1.8V
C
= 44
μ
F
MODE/SYNC PIN = HIGH
1ms/DIV
3423/24 G03
SW
1V/DIV
V
100mV/DIV
AC COUPLED
V
IN
= 1.2V
V
OUT
= 1.8V
C
= 44
μ
F
MODE/SYNC PIN = HIGH
500
μ
s/DIV
3423/24 G04
SW
1V/DIV
0V
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