参数资料
型号: LTC3417AIFE-1#TRPBF
厂商: Linear Technology
文件页数: 5/20页
文件大小: 0K
描述: IC REG BUCK SYNC ADJ DL 20TSSOP
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: 0.8 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: 1A,1.5A
同步整流器:
工作温度: -40°C ~ 125°C
安装类型: 表面贴装
封装/外壳: 20-TSSOP(0.173",4.40mm 宽)裸露焊盘
包装: 带卷 (TR)
供应商设备封装: 20-TSSOP-EP
LTC3417A-1
TYPICAL PERFORMANCE CHARACTERISTICS
OUT1 Ef?ciency vs V IN
OUT1 Ef?ciency vs Load Current
OUT2 Ef?ciency vs Load Current
(Burst Mode Operation)
100
V IN = 2.5V
95 V OUT = 1.8V
90
85
80
100
V IN = 3.6V
95 V OUT = 2.5V
90
85
80
100
95
90
85
V OUT = 1.8V
I LOAD = 1.4A
I LOAD = 460mA
75
Burst Mode
75
Burst Mode
80
70
65
60
0.001
0.01
0.1
OPERATION
PULSE SKIP
FORCED
CONTINUOUS
REFER TO FIGURE 4
1
10
70
65
60
0.001
0.01
0.1
OPERATION
PULSE SKIP
FORCED
CONTINUOUS
REFER TO FIGURE 4
1
10
75
70
2
2.5
3
3.5
REFER TO FIGURE 4
4 4.5 5 5.5
100
95
90
85
80
LOAD CURRENT (A)
OUT2 Ef?ciency vs V IN
(Pulse Skipping Mode)
I LOAD = 250mA
I LOAD = 800mA
3417A-1 G07
V OUT1
100mV/DIV
I OUT1
500mA/DIV
LOAD CURRENT (A)
Load Step OUT1
3417A-1 G08
V OUT2
100mV/DIV
I OUT2
500mA/DIV
V IN (V)
Load Step OUT2
3417A-1 G09
75
70
2
2.5
3
3.5
V OUT = 2.5V
REFER TO FIGURE 4
4 4.5 5
V IN = 3.6V 100μs/DIV
V OUT = 1.8V
I LOAD = 0.25A to 1.4A
REFER TO FIGURE 4
3417A-1 G11
V IN = 3.6V 100μs/DIV
V OUT = 2.5V
I LOAD = 0.25A to 0.8A
REFER TO FIGURE 4
3417A-1 G12
V IN (V)
3417A-1 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
0.080
2
N-CHANNEL SWITC H
2.5 3 3.5
4
4.5
5
5.5
FREQUENCY (MHz)
3417A-1 G13
FREQUENCY (MHz)
3417A-1 G14
V IN (V)
3417A-1 G15
3417a1fa
5
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