参数资料
型号: LTC3402EMS#TR
厂商: Linear Technology
文件页数: 3/16页
文件大小: 0K
描述: IC REG BOOST SYNC ADJ 2A 10MSOP
标准包装: 2,500
类型: 升压(升压)
输出类型: 可调式
输出数: 1
输出电压: 2.6 V ~ 5.5 V
输入电压: 0.5 V ~ 5 V
PWM 型: 电流模式,混合
频率 - 开关: 2MHz
电流 - 输出: 2A
同步整流器:
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 10-TFSOP,10-MSOP(0.118",3.00mm 宽)
包装: 带卷 (TR)
供应商设备封装: 10-MSOP
LTC3402
ELECTRICAL CHARACTERISTICS
The ● 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
PGOOD Low Voltage
PGOOD Leakage
SHDN Input High
CONDITIONS
I PGOOD = 1mA
V OUT = 1V, I PGOOD = 20 μ A
V PGOOD = 5.5V
V IN = V SHDN
MIN
1
TYP
0.1
0.1
0.01
MAX
0.2
0.4
1
UNITS
V
V
μ A
V
SHDN Input Low
0.4
V
SHDN Input Current
V SHDN = 5.5V
0.01
1
μ A
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 LTC3402E is guaranteed to meet performance specifications
from 0 ° C to 70 ° C. Specifications over the –40 ° C to 85 ° C operating
with statistical process controls.
Note 3: Current is measured into the V OUT pin since the supply current is
bootstrapped to the output pin and in the application will reflect to the
input supply by (V OUT /V IN ) ? I/Efficiency. The outputs are not switching.
Note 4: Once the output is started, the IC is not dependent upon the V IN
supply.
temperature range are assured by design, characterization and correlation
TYPICAL PERFOR A CE CHARACTERISTICS (T A = 25 ° C unless otherwise noted)
SW Pin and Inductor Current (I C )
in Discontinuous Mode. Ringing
Control Circuitry Eliminates High
SW
1V/DIV
Switching Waveform on SW Pin
I L
50mA/DIV
0A
SW
1V/DIV
0V
Frequency Ringing
V OUT
100mV/DIV
50mA
I OUT
5mA
Transient Response 5mA to 50mA
50ns/DIV
3402 G01
200ns/DIV
3402 G02
C OUT = 22 μ F
L = 3.3 μ H
200 μ s/DIV
3402 G03
f OSC = 1MHz
Transient Response 50mA to 500mA
Burst Mode Operation
Burst Mode Operation
V OUT
200mV/DIV
550mA
V OUT
AC
100mV/DIV
SW
1V/DIV
V OUT
AC
100mV/DIV
SW
1V/DIV
50mA
C OUT = 22 μ F
L = 3.3 μ H
f OSC = 1MHz
200 μ s/DIV
3402 G04
V IN = 1.2V 5ms/DIV
V OUT = 3.3V
C OUT = 100 μ F
I OUT = 250 μ A
3402 G05
V IN = 1.2V 200 μ s/DIV
V OUT = 3.3V
C OUT = 100 μ F
I OUT = 20mA
3402 G06
MODE/SYNC PIN = HIGH
MODE/SYNC PIN = HIGH
3402fb
3
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