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参数资料
| 型号： | LTC3405ES6#TRMPBF |
| 厂商： | Linear Technology |
| 文件页数： | 4/16页 |
| 文件大小： | 0K |
| 描述： | IC REG BUCK SYNC ADJ .3A SOT23-6 |
| 标准包装： | 1 |
| 类型： | 降压（降压） |
| 输出类型： | 可调式 |
| 输出数： | 1 |
| 输出电压： | 0.8 V ~ 6 V |
| 输入电压： | 2.5 V ~ 5.5 V |
| PWM 型： | 电流模式，混合 |
| 频率 - 开关： | 1.5MHz |
| 电流 - 输出： | 300mA |
| 同步整流器： | 是 |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | SOT-23-6 细型，TSOT-23-6 |
| 包装： | 标准包装 |
| 供应商设备封装： | TSOT-23-6 |
| 产品目录页面： | 1334 (CN2011-ZH PDF) |
| 其它名称： | LTC3405ES6#TRMPBFDKR |
LTC3405
TYPICAL PERFOR A CE CHARACTERISTICS
(From Figure 1a Except for the Resistive Divider Resistor Values)
Dynamic Supply Current
R DS(ON) vs Temperature
Dynamic Supply Current
vs Temperature
1.2
1.0 V
IN = 2.7V
V IN = 3.6V
V IN = 4.2V
1600
1400
V OUT = 1.8V
I LOAD = 0A
600
500
V IN = 3.6V
V OUT = 1.8V
I LOAD = 0A
1200
0.8
0.6
1000
800
400
300
PULSE SKIPPING MODE
0.4
600
PULSE SKIPPING MODE
200
400
0.2
0
–50 –25
0
SYNCHRONOUS SWITCH
MAIN SWITCH
25 50 75 100 125
200
0
2
Burst Mode OPERATION
3 4 5
6
100
0
–50 –25
0
Burst Mode OPERATION
25 50 75 100
125
TEMPERATURE ( ° C)
3405 G11
Switch Leakage vs Temperature
SUPPLY VOLTAGE (V)
3405 G12
Switch Leakage vs Input Voltage
TEMPERATURE ( ° C)
Burst Mode Operation
3405 G13
160
V IN = 5.5V
60
RUN = 0V
140 RUN = 0V
50
SW
120
100
80
40
30
SYNCHRONOUS
SWITCH
5V/DIV
V OUT
50mV/DIV
60
40
20
SYNCHRONOUS
SWITCH
MAIN SWITCH
20
10
MAIN SWITCH
AC COUPLED
I L
100mA/DIV
0
–50 –25
0
25
50
75
100
125
0
0
1
2 3 4
5
6
V IN = 3.6V
5 μ s/DIV
TEMPERATURE ( ° C)
3405 G14
INPUT VOLTAGE (V)
3405 G15
V OUT = 1.8V
I LOAD = 20mA
3405 G16
SW
5V/DIV
Pulse Skipping Mode Operation
RUN
2V/DIV
Start-Up from Shutdown
V OUT
100mV/DIV
AC
Load Step
COUPLED
V OUT
20mV/DIV
AC
COUPLED
I L
100mA/DIV
V OUT
1V/DIV
I L
200mA/DIV
I L
200mA/DIV
I LOAD
200mA/DIV
V IN = 3.6V
V OUT = 1.8V
I LOAD = 20mA
500ns/DIV
3405 G17
V IN = 3.6V
V OUT = 1.8V
I LOAD = 250mA
100 μ s/DIV
3405 G18
V IN = 3.6V 40 μ s/DIV
V OUT = 1.8V
I LOAD = 0mA TO 250mA
PULSE SKIPPING MODE
3405 G19
3405fa
4
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