参数资料
型号: LTC3425EUH#PBF
厂商: Linear Technology
文件页数: 4/24页
文件大小: 0K
描述: IC REG BOOST SYNC ADJ 5A 32QFN
标准包装: 73
类型: 升压(升压)
输出类型: 可调式
输出数: 1
输出电压: 2.4 V ~ 5.25 V
输入电压: 0.5 V ~ 4.5 V
PWM 型: 电流模式,混合
频率 - 开关: 100kHz ~ 2MHz
电流 - 输出: 5A
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: 32-WFQFN 裸露焊盘
包装: 管件
供应商设备封装: 32-QFN 裸露焊盘(5x5)
LTC3425
TYPICAL PERFOR A CE CHARACTERISTICS
SW Pin and Inductor Current in
Discontinous Mode. Antiring
SWA, SWB, SWC, SWD
Circuit Eliminates High Frequency
SWA TO SWD
5V/DIV
at 1MHz/Phase
SWA
2V/DIV
SYNCOUT
2V/DIV
SW Pin and Oscillator SYNCOUT
I L
0.2A/DIV
SW
2V/DIV
Ringing
250ns/DIV
3425 G01
250ns/DIV
3425 G02
V IN = 2.4V
250ns/DIV
3425 G03
V OUT = 3.3V
C OUT = 220 μ F
V OUT AC
100mV/DIV
LOAD
CURRENT
0.5A/DIV
Transient Response 0.5A to 1.5A
Fixed Frequency Mode Operation
V OUT AC
50mV/DIV
Output Voltage Ripple at 2.5A
Load with Only Four 4.7 μ F
Ceramic Capacitors
V OUT AC
10mV/DIV
Output Voltage Ripple at 2.5A
Load with a 47 μ F Ceramic Bulk
Capacitor
V IN = 2.4V
100 μ s/DIV
3425 G04
V IN = 2.4V 500ns/DIV
3425 G05
V IN = 2.4V 500ns/DIV
3425 G06
I IN
0.5A/DIV
SS Pin
1V/DIV
V OUT
2V/DIV
V OUT = 3.3V
C OUT = 220 μ F
Soft-Start and Inrush Current
Limiting
SWA
2V/DIV
V OUT AC
50mV/DIV
V OUT = 3.3V
FREQUENCY = 1MHz/PHASE
Burst Mode Operation
I OUT
1A/DIV
BURST PIN
1V/DIV
V OUT AC
200mV/DIV
V OUT = 3.3V
FREQUENCY = 1MHz/PHASE
Transient Response 10mA to 1A
Automatic Burst Mode Operation
V IN = 2.4V 500 μ s/DIV
V OUT = 3.3V
C SOFTSTART = 0.015 μ F
3425 G07
V IN = 2.4V
V OUT = 3.3V
C OUT = 220 μ F
25 μ s/DIV
3425 G08
V IN = 2.4V
V OUT = 3.3V
C OUT = 220 μ F
1ms/DIV
3425 G10
3425f
4
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