参数资料
型号: LTC3405ES6#TRPBF
厂商: Linear Technology
文件页数: 14/16页
文件大小: 0K
描述: IC REG BUCK SYNC ADJ .3A SOT23-6
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: 0.8 V ~ 6 V
输入电压: 2.5 V ~ 5.5 V
PWM 型: 电流模式,混合
频率 - 开关: 1.5MHz
电流 - 输出: 300mA
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: SOT-23-6 细型,TSOT-23-6
包装: 带卷 (TR)
供应商设备封装: TSOT-23-6
LTC3405
TYPICAL APPLICATIO S
Single Li-Ion to 1.8V/300mA Regulator
Using Ceramic and Tantalum Output Capacitors
V IN
2.7V
TO 4.2V
C IN **
2.2 μ F
CER
4
1
6
V IN SW
LTC3405
RUN
MODE V FB
3
5
4.7 μ H*
22pF
C OUT1 *** +
1 μ F
CER
V OUT
1.8V
C OUT2 ?
22 μ F
TANT
698k
AVX TAJA226M006R
100
GND
2
887k * MURATA LQH3C4R7M34
** TAIYO YUDEN CERAMIC LMK212BJ225MG
*** TAIYO YUDEN CERAMIC JMK107BJ105MA
?
3405 TA02a
90
80
70
60
50
40
30
V IN = 2.7V
V IN = 4.2V
V IN = 3.6V
V OUT
100mV/DIV
AC COUPLED
I L
200mA/DIV
I LOAD
200mA/DIV
0.1
1
10
100
1000
V IN = 3.6V
40 μ s/DIV
OUTPUT CURRENT (mA)
3405 TA02b
V OUT = 1.8V
I LOAD = 100mA TO 250mA
3405 TA02c
Single Li-Ion to 1.8V/200mA Regulator
Using All Ceramic Capacitors Optimized for Smallest Footprint
22pF
TAIYO YUDEN CERAMIC JMK212BJ475MG
?
V IN
2.7V
TO 4.2V
C IN **
1 μ F
CER
4
1
6
V IN SW
LTC3405
RUN
MODE V FB
GND
2
3
5
3.3 μ H*
V OUT
1.8V
1M C OUT ?
4.7 μ F
CER
332k
200k * TAIYO YUDEN LB2016T3R3M
** TAIYO YUDEN CERAMIC JMK107BJ105MA
3405 TA03a
100
90
V IN = 2.7V
V OUT
100mV/DIV
AC COUPLED
80
V IN = 3.6V
70
60
50
40
30
V IN = 4.2V
I L
200mA/DIV
I LOAD
200mA/DIV
0.1
1 10 100
OUTPUT CURRENT (mA)
1000
3405 TA03b
V IN = 3.6V 40 μ s/DIV
I LOAD = 100mA TO 250mA
3405 TA03c
3405fa
14
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