参数资料
型号: LTC3880IUJ#TRPBF
厂商: Linear Technology
文件页数: 10/112页
文件大小: 0K
描述: IC REG CTRLR BUCK PWM CM 40-QFN
软件下载: LTpowerPlay™
标准包装: 2,000
系列: PolyPhase®
PWM 型: 电流模式
输出数: 2
频率 - 最大: 1MHz
电源电压: 4.5 V ~ 24 V
降压:
升压:
回扫:
反相:
倍增器:
除法器:
Cuk:
隔离:
工作温度: -40°C ~ 125°C
封装/外壳: 40-WFQFN 裸露焊盘
包装: 带卷 (TR)
LTC3880/LTC3880-1
TYPICAL PERFORMANCE CHARACTERISTICS
RUN
2V/DIV
Soft-Off Ramp
60
50
40
Current Sense Threshold
vs I TH Voltage (Low Range)
55
54
53
52
Maximum Current Sense Threshold
vs Duty Cycle, V OUT = 0V
50mV SENSE CONDITION
V OUT
1V/DIV
30
20
10
51
50
49
t FALL = 5ms
t DELAY = 10ms
5ms/DIV
3880 G10
0
48
47
–10
–20
0
0.5
1
1.5
V SENSE 50mV
V SENSE 25mV
2 2.5
46
45
0
30
50
70
90
V ITH (V)
3880 G11
DUTY CYCLE (%)
3880 G12
Maximum Current Sense Threshold
vs Common Mode Voltage
Regulated Output
vs Temperature
SHARE_CLK Frequency
vs Temperature
55
54
53
52
51
50
49
48
47
46
50mV SENSE CONDITION
0.5025
0.5020
0.5015
0.5010
0.5005
0.5000
0.4995
0.4990
0.4985
0.4980
110
105
100
95
45
0
1
2
3 4
5
6
0.4975
–50 –30 –10
10
30
50
70
90
110
90
–50 –30 –10 10 30
50 70
90
110
101.0
COMMON MODE VOLTAGE (V)
SHARE-CLK Frequency vs V IN
3880 G13
30
TEMPERATURE (°C)
3880 G14
Quiescent Current vs Temperature
0.40
0.30
TEMPERATURE (°C)
V OUT Measurement vs V OUT
3880 G15
100.5
100.0
99.5
25
20
0.20
0.10
0
–0.10
–0.20
–0.30
99.0
6
8 10 12 14 16 18 20 22 24 26 28
15
–50 –30 –10 10 30
50 70
90 110
–0.40
0.5
1
1.5
2
2.5
3
3.5
4
4.5
5
5.5
10
V IN (V)
3880 G16
TEMPERATURE (°C)
3880 G17
For more information www.linear.com/LTC3880
V OUT (V)
3880 G18
3880fb
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