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LTC3446 PDF预览

LTC3446

更新时间: 2023-12-20 18:44:00
品牌 Logo 应用领域
亚德诺 - ADI 稳压器
页数 文件大小 规格书
20页 283K
描述
具双 VLDO 稳压器的单片式降压型稳压器

LTC3446 数据手册

 浏览型号LTC3446的Datasheet PDF文件第3页浏览型号LTC3446的Datasheet PDF文件第4页浏览型号LTC3446的Datasheet PDF文件第5页浏览型号LTC3446的Datasheet PDF文件第7页浏览型号LTC3446的Datasheet PDF文件第8页浏览型号LTC3446的Datasheet PDF文件第9页 
LTC3446  
Typical perForMance characTerisTics  
Buck PMOS Switch On-Resistance  
Buck NMOS Switch On-Resistance  
200  
180  
160  
140  
200  
180  
160  
140  
120  
100  
80  
120  
100  
80  
V
V
V
V
= 2.7V  
= 3.6V  
= 4.2V  
= 5.5V  
V
V
V
V
= 2.7V  
= 3.6V  
= 4.2V  
= 5.5V  
IN  
IN  
IN  
IN  
IN  
IN  
IN  
IN  
55  
TEMPERATURE (°C)  
105 130  
55  
TEMPERATURE (°C)  
105 130  
–45 –20  
5
30  
80  
–45 –20  
5
30  
80  
3446 G13  
3446 G14  
Buck Transient Response with  
Burst Mode Defeated  
Buck Transient Response with  
Burst Mode Enabled  
BUCK OUTPUT  
VOLTAGE  
BUCK OUTPUT  
VOLTAGE  
50mV/DIV  
50mV/DIV  
AC-COUPLED  
AC-COUPLED  
500mA  
LOAD  
CURRENT  
500mA  
LOAD  
CURRENT  
50mA  
50mA  
3446 G15  
3446 G16  
100µs/DIV  
100µs/DIV  
FRONT PAGE APPLICATION CIRCUIT  
FRONT PAGE APPLICATION CIRCUIT  
VLDO Rejection of Buck DC/DC  
Burst Mode Ripple  
VLDO Transient Response  
V
=
LVIN  
BUCK V  
OUT  
20mV/DIV  
VLDO OUTPUT  
VOLTAGE  
AC-COUPLED  
20mV/DIV  
AC-COUPLED  
V
LVOUT  
10mV/DIV  
300mA  
AC-COUPLED  
LOAD  
3446 G18  
2µs/DIV  
= 1.8V  
CURRENT  
V
V
V
I
= BUCK V  
OUT  
LVIN  
IN  
30mA  
= 4.2V  
3446 G17  
100µs/DIV  
= 1.5V OR 1.2V  
FRONT PAGE APPLICATION CIRCUIT  
= 1.5V  
= 50mA  
= 2.2µF  
LVOUT  
LVOUT  
LV  
OUT  
C
LVOUT  
3446ff  
6

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