参数资料
型号: LTC3403EDD
厂商: Linear Technology
文件页数: 3/16页
文件大小: 0K
描述: IC REG BUCK SYNC ADJ 0.6A 8DFN
标准包装: 121
类型: 降压(降压)
输出类型: 可调式
输出数: 1
输出电压: 0.3 V ~ 3.5 V
输入电压: 2.5 V ~ 5 V
PWM 型: 电流模式,混合
频率 - 开关: 1.5MHz
电流 - 输出: 600mA
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: 8-WFDFN 裸露焊盘
包装: 管件
供应商设备封装: 8-DFN-EP(3x3)
LTC3403
ELECTRICAL CHARACTERISTICS
Note 1: Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2: The LTC3403E is guaranteed to meet performance specifications
from 0 ° C to 70 ° C. Specifications over the –40 ° C to 85 ° C operating
temperature range are assured by design, characterization and correlation
with statistical process controls.
Note 3: T J is calculated from the ambient temperature T A and power
dissipation P D according to the following formula:
LTC3403: T J = T A + (P D )(43 ° C/W)
Note 4: When V REF > 1.2V and V REF x3 > V IN , the P-channel FET will be on
in parallel with the bypass PFET reducing the overall R DS(ON) .
Note 5: This IC includes overtemperature protection that is intended to
protect the device during momentary overload conditions. Junction
temperature will exceed 125 ° C when overtemperature protection is active.
Continuous operation above the specified maximum operating junction
temperature may impair device reliability.
TYPICAL PERFOR A CE CHARACTERISTICS
(From Figure 1a)
Efficiency vs V IN
Efficiency vs V OUT
Efficiency vs Output Current
100
100
100mA BURST
100
95
90
85
80
I L = 100mA
I L = 300mA
I L = 600mA
90
80
MODE 0PERATION
100mA FORCED
CONTINUOUS MODE
90
80
70
60
V IN = 3.6V
V IN = 4.2V
V IN = 3.6V
V IN = 4.2V
75
70
50
70
65
60
55
50
2.5
3.0
I L = 10mA
3.5
4.0
4.5
60
50
40
0
600mA FORCED
CONTINUOUS MODE
1 2
T A = 25 ° C
V IN = 3.6V
3
4
40
30
20
10
0
0.1
1
T A = 25 ° C
FORCED
CONTINUOUS
MODE
Burst Mode
OPERATION
V OUT = 1.2V
10 100 1000
V IN (V)
Efficiency vs Output Current
3403 G01
V OUT (V)
Efficiency vs Output Current
3403 GO1a
OUTPUT CURRENT (mA)
Oscillator Frequency
vs Temperature
3403 G02
100
90
80
70
60
50
40
30
20
10
0
V IN = 3.6V
V IN = 4.2V
V IN = 3.6V
V IN = 4.2V
T A = 25 ° C
FORCED
CONTINUOUS
MODE
Burst Mode
OPERATION
V OUT = 1.5V
100
90
80
70
60
50
40
30
20
10
0
V IN = 3.6V
V IN = 4.2V
V IN = 3.6V
V IN = 4.2V
T A = 25 ° C
FORCED
CONTINUOUS
MODE
Burst Mode
OPERATION
V OUT = 2.5V
1.70
1.65
1.60
1.55
1.50
1.45
1.40
1.35
1.30
V IN = 3.6V
0.1
1
10 100
1000
0.1
1
10 100
1000
–50 –25
0
25
50
75
100
125
OUTPUT CURRENT (mA)
3403 G03
OUTPUT CURRENT (mA)
3403 G04
TEMPERATURE ( ° C)
3403 G05
3403f
3
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