参数资料
型号: LT3505IMS8E#PBF
厂商: Linear Technology
文件页数: 5/24页
文件大小: 0K
描述: IC REG BUCK ADJ 1.2A 8MSOP
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: 0.78 V ~ 33.8 V
输入电压: 3.6 V ~ 36 V
PWM 型: 电流模式
频率 - 开关: 200kHz ~ 3.01MHz
电流 - 输出: 1.2A
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: 8-TSSOP,8-MSOP(0.118",3.00mm 宽)裸露焊盘
包装: 管件
供应商设备封装: 8-MSOP-EP
LT3505
TYPICAL PERFORMANCE CHARACTERISTICS
Undervoltage Lockout
Switching Frequency
Frequency Foldback, R T = 75.0k
4.00
3.90
3.80
3.70
3.60
3.50
3.40
3.30
3.20
3.10
2.40
2.20
2.00
1.80
1.60
1.40
1.20
1.00
0.80
R T = 21k
R T = 30.1k
R T = 75.0k
0.6
0.5
0.4
0.3
0.2
0.1
T A = 25 ° C
3.00
–50
–25
0 25 50 75
TEMPERATURE ( ° C)
100
125
0.60
–50
–25
0 25 50 75
TEMPERATURE ( ° C)
100
125
0
0
0.1
0.2
0.3 0.4 0.5
FB VOLTAGE (V)
0.6
0.7
0.8
3505 G10
3505 G12
Soft-Start
SHDN Pin Current
Typical Minimum Input Voltage,
(V OUT = 5V, f SW = 750kHz)
2.0
1.8
1.6
T A = 25 ° C
50
45
40
T A = 25 ° C
7.2
7.0
6.8
TO START
T A = 25 ° C
1.4
1.2
1.0
0.8
35
30
25
20
6.6
6.4
6.2
6.0
0.6
0.4
0.2
15
10
5
5.8
5.6
5.4
TO RUN
0
0
0.25 0.50 0.75
1
1.25 1.50 1.75
2
0
0
2
4
6
8
10 12 14 16 18 20
5.2
1
10
100
1000
SHDN PIN VOLTAGE (V)
V SHDN (V)
3505 G14
LOAD CURRENT (mA)
3505 G15
Typical Minimum Input Voltage,
(V OUT = 3.3V, f SW = 750kHz)
Typical Minimum Input Voltage,
(V OUT = 3.3V, f SW = 2.2MHz)
Typical Minimum Input Voltage,
(V OUT = 5V, f SW = 2.2MHz)
5.5
5.3
5.1
4.9
T A = 25 ° C
TO START
5.5
5.0
T A = 25 ° C
TO START
7.0
6.8
6.6
6.4
TO START
TO RUN
4.7
6.2
4.5
4.3
4.5
TO RUN
6.0
5.8
4.1
3.9
TO RUN
4.0
5.6
5.4
3.7
3.5
1
10
100
1000
3.5
1
10
100
1000
5.2
5.0
1
T A = 25 ° C
10
100
1000
LOAD CURRENT (mA)
LOAD CURRENT (mA)
LOAD CURRENT (mA)
3505fc
5
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