参数资料
型号: LTC3417EDHC#PBF
厂商: Linear Technology
文件页数: 5/20页
文件大小: 0K
描述: IC REG BUCK SYNC ADJ DL 16DFN
标准包装: 73
类型: 降压(降压)
输出类型: 可调式
输出数: 2
输出电压: 0.8 V ~ 5 V
输入电压: 2.25 V ~ 5.5 V
PWM 型: 电流模式,混合
频率 - 开关: 1.5MHz,600kHz ~ 4MHz
电流 - 输出: 800mA,1.4A
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: 16-WFDFN 裸露焊盘
包装: 管件
供应商设备封装: 16-DFN(5x3)
LTC3417
TYPICAL PERFORMANCE CHARACTERISTICS
100
95
90
85
80
OUT2 Ef?ciency vs V IN
(Pulse Skipping Mode)
I LOAD = 250mA
I LOAD = 800mA
V OUT1
100mV/DIV
I OUT1
500mA/DIV
Load Step OUT1
V OUT2
100mV/DIV
I OUT2
500mA/DIV
Load Step OUT2
75
70
2
2.5
3
3.5
V OUT = 2.5V
REFER TO FIGURE 4
4 4.5 5 5.5
V IN = 3.6V 100μs/DIV
V OUT = 1.8V
I LOAD = 0.25A to 1.4A
REFER TO FIGURE 4
3417 G11
V IN = 3.6V 100μs/DIV
V OUT = 2.5V
I LOAD = 0.25A to 0.8A
REFER TO FIGURE 4
3417 G12
V IN (V)
3417 G10
Ef?ciency vs Frequency OUT1
Ef?ciency vs Frequency OUT2
R DS(ON) vs V IN OUT1
94
92
90
T A = 27°C
V IN = 3.6V
V OUT = 1.8V
I OUT = 300mA
90
85
80
0.105
0.100
P-CHANNEL SWITCH
T A = 27°C
0.095
88
86
75
70
0.090
84
65
T A = 27°C
V IN = 3.6V
0.085
82
0
1
2
3
4
5
60
0
1
2
V OUT = 2.5V
I OUT = 100mA
3
4
0.080
2
N-CHANNEL SWITC H
2.5 3 3.5
4
4.5
5
5.5
FREQUENCY (MHz)
R DS(ON) vs V IN OUT2
3417 G13
FREQUENCY (MHz)
Frequency vs V IN
3417 G14
V IN (V)
Frequency vs Temperature
3417 G15
0.20
T A = 27°C
6
15
0.19
4
10
FREQ = V IN
0.18
0.17
P-CHANNEL SWITCH
2
0
–2
FREQ = 143k TO GROUND
5
0
FREQ = 143k TO GROUND
0.16
–4
FREQ = V IN
–5
–6
0.15
N-CHANNEL SWITC H
–8
–10
0.14
2
2.5
3
3.5
4
4.5
5
5.5
–10
2
2.5
3
3.5
4
4.5
5
5.5
–15
–50 –25
0
25
50
75
100
125
V IN (V)
3417 G16
V IN (V)
3417 G17
TEMPERATURE ( ° C)
3417 G18
3417fd
5
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