参数资料
型号: LTC3103EMSE#TRPBF
厂商: Linear Technology
文件页数: 6/20页
文件大小: 0K
描述: IC REG BUCK SYNC ADJ 0.3A 10MSOP
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: 0.6 V ~ 13.8 V
输入电压: 2.5 V ~ 15 V
PWM 型: 电流模式,混合
频率 - 开关: 1.2MHz
电流 - 输出: 300mA
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: 10-TFSOP,10-MSOP(0.118",3.00mm 宽)裸露焊盘
包装: 带卷 (TR)
供应商设备封装: 10-MSOP 裸露焊盘
LTC3103
TYPICAL PERFORMANCE CHARACTERISTICS
T A = 25°C unless otherwise noted
V OUT
200mV/DIV
AC-COUPLED
Load Step
(Automatic Burst Mode Operation)
V OUT
50mV/DIV
AC-COUPLED
Load Step
(Forced Continuous Operation)
5.5
5.0
Minimum Input Voltage at
Maximum Duty Cycle vs Load
Current
I L
200mA/DIV
I LOAD
200mA/DIV
200μs/DIV
I LOAD = LOAD STEP, 5mA TO 300mA
V IN = 10V
C IN = 10μF
L = 10μH
V OUT = 2.2V
C OUT = 47μF
3103 G19
I L
100mA/DIV
I LOAD
100mA/DIV
200μs/DIV
I LOAD = LOAD STEP, 50mA TO 200mA
V IN = 10V
L = 10μH
V OUT = 2.5V
C OUT = 22μF
3103 G20
4.5
4.0
3.5
3.0
2.5
0
50
V OUT = 4.2V V OUT = 2.2V
V OUT = 3.3V V OUT = 1.8V
V OUT = 2.5V V OUT = 1.5V
100 150 200 250
LOAD CURRENT (mA)
300
Minimum Input Voltage at
Maximum Duty Cycle vs Load
Current
Load Regulation
(Automatic Burst Mode Operation)
3103 G21
Load Regulation
(Automatic Burst Mode Operation)
15
14
13
V OUT = 12V
1.0
0.5
NORMALIZED AT I LOAD = 100mA
V IN = 10V
V OUT = 5V
C FF = 12pF
1.0
0.5
NORMALIZED AT I LOAD = 100mA
V IN = 10V
V OUT = 3.3V
C FF = 12pF
12
11
10
9
8
V OUT = 9V
0
–0.5
–1.0
0
–0.5
–1.0
7
6
5
0
50
V OUT = 5V
100 150 200
LOAD CURRENT (mA)
250
300
–1.5
–2.0
0
10
20 30
I LOAD (mA)
C OUT = 68μF
C OUT = 47μF
C OUT = 22μF
40 50
–1.5
–2.0
0
10
20
30 40 50
I LOAD (mA)
C OUT = 68μF
C OUT = 47μF
C OUT = 33μF
60 70
80
3103 G22
Load Regulation
(Automatic Burst Mode Operation)
Maximum Duty Cycle
vs Input Voltage
3103 G23
3103 G24
Automatic Burst Mode Threshold
vs Supply Voltage
1.0
0.5
0
–0.5
–1.0
NORMALIZED AT I LOAD = 100mA
V IN = 10V
V OUT = 1.8V
C FF = 12pF
100
95
90
85
I OUT = 1mA
I OUT = 300mA
160
140
120
100
80
V OUT = 1.2V
V OUT = 1.8V
V OUT = 2.5V
V OUT = 3.3V
V OUT = 5V
–1.5
–2.0
80
75
60
40
–2.5
–3.0
0
20
40
60
C OUT = 100μF
C OUT = 68μF
C OUT = 47μF
80 100
70
65
2
3
4
5
6
7
8
9
20
0
0
2
4
6
8
10
12
14
16
I LOAD (mA)
3103 G25
INPUT VOLTAGE (V)
3103 G26
INPUT VOLTAGE (V)
3103 G27
3103f
6
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