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参数资料
| 型号： | LTC3405ES6#TRPBF |
| 厂商： | Linear Technology |
| 文件页数： | 3/16页 |
| 文件大小： | 0K |
| 描述： | IC REG BUCK SYNC ADJ .3A SOT23-6 |
| 标准包装： | 2,500 |
| 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： | 带卷 (TR) |
| 供应商设备封装： | TSOT-23-6 |
LTC3405
TYPICAL PERFOR A CE CHARACTERISTICS
(From Figure1a Except for the Resistive Divider Resistor Values)
95
Efficiency vs Input Voltage
100
Efficiency vs Output Current
100
Efficiency vs Output Current
90
85
80
75
70
I OUT = 250mA
I OUT = 100mA
I OUT = 10mA
I OUT = 1mA
90 V IN = 3.6V
80
V IN = 4.2V
70
60
V IN = 3.6V
50
V IN = 4.2V
40
90
80
70
V IN = 2.7V
V IN = 3.6V
V IN = 4.2V
V IN = 5.5V
65
60
55
50
Burst Mode OPERATION
V OUT = 1.8V
2.5 3.0 3.5 4.0
I OUT = 0.1mA
4.5 5.0
5.5
30
20
10
0
0.1
1
PULSE SKIPPING MODE
Burst Mode OPERATION
V OUT = 1.8V
10 100 1000
60
50
40
0.1
1
10
V OUT = 1.8V
100 1000
100
INPUT VOLTAGE (V)
Efficiency vs Output Current
3405 G02
0.814
OUTPUT CURRENT (mA)
Reference Voltage vs
Temperature
V IN = 3.6V
3405 G03
1.70
OUTPUT CURRENT (mA)
Oscillator Frequency vs
Temperature
V IN = 3.6V
3405 G04
90
V IN = 2.7V
0.809
1.65
1.60
80
0.804
1.55
70
60
50
V IN = 4.2V
V IN = 3.6V
0.799
0.794
0.789
1.50
1.45
1.40
1.35
40
0.1
1
10
V OUT = 1.3V
100 1000
0.784
–50 –25
0
25
50
75
100
125
1.30
–50 –25
0
25
50
75
100
125
1.8
OUTPUT CURRENT (mA)
Oscillator Frequency vs
Supply Voltage
3405 G05
1.834
TEMPERATURE ( ° C)
3405 G06
Output Voltage vs Load Current
1.2
TEMPERATURE ( ° C)
R DS(ON ) vs Input Voltage
3405 G07
1.7
1.824
Burst Mode
OPERATION
1.1
1.0
1.6
1.814
PULSE SKIPPING MODE
0.9
0.8
MAIN SWITCH
0.7
1.5
1.4
1.804
1.794
0.6
0.5
0.4
SYNCHRONOUS
SWITCH
0.3
1.3
1.784
V IN = 3.6V
0.2
0.1
1.2
2
3 4 5
6
1.774
0
100
200 300 400
500
600
0
0
1
2
3
4
5
6
7
SUPPLY VOLTAGE (V)
3405 G08
LOAD CURRENT (mA)
3405 G09
INPUT VOLTAGE (V)
3405 G10
3405fa
3
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