参数资料
型号: LTC3547EDDB-1#TRPBF
厂商: Linear Technology
文件页数: 4/16页
文件大小: 0K
描述: IC REG BUCK SYNC ADJ .3A DL 8DFN
标准包装: 2,500
类型: 降压(降压)
输出类型: 可调式
输出数: 2
输出电压: 0.6 V ~ 5.5 V
输入电压: 2.5 V ~ 5.5 V
PWM 型: 电流模式
频率 - 开关: 2.25MHz
电流 - 输出: 300mA
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: 8-WFDFN 裸露焊盘
包装: 带卷 (TR)
供应商设备封装: 8-DFN(3x2)
LTC3547
TYPICAL PERFOR A CE CHARACTERISTICS
Oscillator Frequency
2.6
2.5
vs Temperature
50
Switch Leakage vs Temperature
500
Switch Leakage vs Input Voltage
2.4
2.3
V IN = 4.2V
V IN = 3.6V
40
30
400
300
2.2
2.1
2.0
1.9
V IN = 2.7V
20
10
SYNCHRONOUS
SWITCH
MAIN SWITCH
200
100
MAIN SWITCH
SYNCHRONOUS
SWITCH
1.8
– 50 – 25
0
25
50
75
100
125
0
– 50 – 25
0
25
50
75
100
125
0
2.5
3
3.5
4
4.5
5
5.5
6
612
TEMPERATURE ( ° C)
Reference Voltage
vs Temperature
3547 G04
1.0
TEMPERATURE ( ° C)
R DS(ON) vs Input Voltage
3547 G05
1.3
V IN (V)
R DS(ON) vs Temperature
3547 G06
608
0.9
MAIN SWITCH
1.2
1.1
V IN = 2.7V
604
0.8
1.0
V IN = 3.6V
0.9
600
0.7
SYNCHRONOUS
SWITCH
0.8
596
0.6
0.7
0.6
V IN = 4.2V
592
588
– 50
– 25
0
25
50
75
100
0.5
0.4
2.5
3
3.5
4
4.5
5
5.5
6
0.5
0.4
– 50 – 25 0
25
50
MAIN SWITCH
SYNCHRONOUS
SWITCH
75 100 125
TEMPERATURE ( ° C)
Ef?ciency vs Load Current
3547 G07
V IN (V)
Ef?ciency vs Load Current
3547 G08
TEMPERATURE ( ° C)
Ef?ciency vs Load Current
3547 G09
100
90
V OUT = 1.2V
100
90
V OUT = 1.8V
100
90
V OUT = 2.5V
80
70
60
50
40
30
80
70
60
50
40
30
80
70
60
50
40
30
20
10
0
V IN = 2.7V
V IN = 3.6V
V IN = 4.2V
20
10
0
V IN = 2.7V
V IN = 3.6V
V IN = 4.2V
20
10
0
V IN = 2.7V
V IN = 3.6V
V IN = 4.2V
0.1
1
10 100
1000
0.1
1
10 100
1000
0.1
1
10 100
1000
OUTPUT CURRENT (mA)
3547 G10
OUTPUT CURRENT (mA)
3547 G11
OUTPUT CURRENT (mA)
3547 G12
3547fa
4
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