参数资料
型号: LT3480EDD#TRPBF
厂商: Linear Technology
文件页数: 4/24页
文件大小: 0K
描述: IC REG BUCK ADJ 2A 10DFN
标准包装: 2,500
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:
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 10-WFDFN 裸露焊盘
包装: 带卷 (TR)
供应商设备封装: 10-DFN(3x3)
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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