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参数资料
| 型号： | LT3480HMSE#PBF |
| 厂商： | Linear Technology |
| 文件页数： | 4/24页 |
| 文件大小： | 0K |
| 描述： | IC REG BUCK ADJ 2A 10MSOP |
| 标准包装： | 50 |
| 类型： | 降压（降压） |
| 输出类型： | 可调式 |
| 输出数： | 1 |
| 输出电压： | 0.79 V ~ 20 V |
| 输入电压： | 3.6 V ~ 36 V |
| PWM 型： | 电流模式，混合 |
| 频率 - 开关： | 200kHz ~ 2.4MHz |
| 电流 - 输出： | 2A |
| 同步整流器： | 无 |
| 工作温度： | -40°C ~ 150°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 10-TFSOP，10-MSOP（0.118"，3.00mm 宽）裸露焊盘 |
| 包装： | 管件 |
| 供应商设备封装： | 10-MSOP 裸露焊盘 |
LT3480
ELECTRICAL CHARACTERISTICS
guaranteed over the –40°C to 125°C temperature range. The LT3480H
specifications are guaranteed over the –40°C to 150°C temperature range.
The LT3480MP specifications are guaranteed over the –55°C to 150°C
temperature range.
Note 3: Bias current flows out of the FB pin.
Note 4: This is the minimum voltage across the boost capacitor needed to
guarantee full saturation of the switch.
Note 5: For operation at T J ≤ 125°C, the absolute maximum voltage at V IN
and RUN/SS pins is 40V for continuous operation and 60V for up to
1 second nonrepetitive transients. For operation at T J > 125°C, the
absolute maximum voltage at V IN and RUN/SS pins is 36V.
TYPICAL PERFORMANCE CHARACTERISTICS
Efficiency
Efficiency
Efficiency
100
90
V IN = 7V
90
10
90
80
V IN = 12V
V IN = 34V
85
80
75
V IN = 12V
V IN = 24V
V IN = 34V
80
70
1
V IN = 24V
70
60
70
65
50
0.1
60
50
V OUT = 5V
L: NEC PLC-0745-5R6
f: 800kHz
60
55
50
V OUT = 3.3V
L: NEC PLC-0745-5R6
f: 800kHz
40
30
V IN = 12V
V OUT = 3.3V
L = 5.6μH
F = 800 kHz
0.01
0
0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0
0
0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0
0
0.5
1.0 1.5
2
LOAD CURRENT (A)
No Load Supply Current
3480 G01
LOAD CURRENT (A)
No Load Supply Current
3480 G02
LOAD CURRENT (A)
Maximum Load Current
3480 G27
120
V OUT = 3.3V
400
CATCH DIODE: DIODES, INC. PDS360
4.0
100
80
60
40
20
350
300
250
200
150
100
50
V IN = 12V
V OUT = 3.3V
INCREASED SUPPLY
CURRENT DUE TO CATCH
DIODE LEAKAGE AT
HIGH TEMPERATURE
3.5
3.0
2.5
2.0
1.5
TYPICAL
MINIMU M
V OUT = 3.3V
T A = 25 °C
L = 4.7μH
f = 800 kHz
0
0
5
10
15
20
25
30
35
0
–50 –25
0
25
50
75 100 125 150
1.0
5
10
15
20
25
30
4
INPUT VOLTAGE (V)
3480 G04
TEMPERATURE (°C)
3480 G05
For more information www.linear.com/LT3480
INPUT VOLTAGE (V)
3480 G06
3480fe
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