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参数资料
| 型号： | LTC3862IUH#TRPBF |
| 厂商： | Linear Technology |
| 文件页数： | 7/42页 |
| 文件大小： | 0K |
| 描述： | IC REG CTRLR BST PWM CM 24-QFN |
| 标准包装： | 2,500 |
| PWM 型： | 电流模式 |
| 输出数： | 1 |
| 频率 - 最大： | 500kHz |
| 占空比： | 96% |
| 电源电压： | 4 V ~ 36 V |
| 降压： | 无 |
| 升压： | 是 |
| 回扫： | 无 |
| 反相： | 无 |
| 倍增器： | 无 |
| 除法器： | 无 |
| Cuk： | 无 |
| 隔离： | 无 |
| 工作温度： | -40°C ~ 125°C |
| 封装/外壳： | 24-WQFN 裸露焊盘 |
| 包装： | 带卷 (TR) |
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LTC3862
TYPICAL PERFORMANCE CHARACTERISTICS
80
Maximum Current Sense
Threshold vs Duty Cycle
1.30
RUN Threshold vs Temperature
1.5
RUN Threshold vs Input Voltage
75
SLOPE = 0.625
1.25
ON
1.4
70
65
SLOPE = 1
SLOPE = 1.66
1.20
1.3
ON
OFF
1.2
60
55
1.15
1.1
OFF
50
0
10 20 30 40 50 60 70 80 90 100
1.10
–50 –25
0
25 50
75
100 125 150
1.0
0
5
10
15
20
25
30
35
40
0
–0.1
–0.2
–0.3
–0.4
–0.5
–0.6
–0.7
–0.8
–0.9
DUTY CYCLE (%)
RUN (Off) Source Current vs
Temperature
3862 G18
0
–1
–2
–3
–4
–5
–6
–7
TEMPERATURE (°C)
RUN (On) Source Current vs
Temperature
3862 G09
0
–1
–2
–3
–4
–5
–6
INPUT VOLTAGE (V)
RUN Source Current vs
Input Voltage
3862 G20
–1.0
–50 –25
0
25
50
75
100 125 150
–8
–50 –25
0
25
50
75
100 125 150
–7
4
8
12
16
20
24
28
32
36
–5.0
–5.1
–5.2
–5.3
–5.4
–5.5
TEMPERATURE (°C)
3862 G21vv
Soft-Start Current vs Temperature
0
–1
–2
–3
–4
–5
TEMPERATURE (°C)
Soft-Start Current vs
Soft-Start Voltage
1344 G06
307
306
305
304
303
302
301
300
299
INPUT VOLTAGE (V)
Oscillator Frequency vs
Temperature
3862 G23
–5.6
–50 –25
0
25 50 75 100 125 150
TEMPERATURE (°C)
–6
0
0.5
1 1.5 2 2.5 3
SOFT-START VOLTAGE (V)
3.5
4
298
–50 –25
0
25 50 75 100 125 150
TEMPERATURE (°C)
3862 G24
3862 G25
For more information www.linear.com/LTC3862
3862 G26
3862fc
7
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