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LTC3026-1 PDF预览

LTC3026-1

更新时间： 2024-09-26 14:58:11
品牌 Logo 应用领域
亚德诺 - ADI 稳压器
页数 文件大小 规格书
16页 176K
描述
1.5A 低输入电压 VLDO 线性稳压器

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中文翻译

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LTC3026-1 数据手册

 浏览型号LTC3026-1的Datasheet PDF文件第2页浏览型号LTC3026-1的Datasheet PDF文件第3页浏览型号LTC3026-1的Datasheet PDF文件第4页浏览型号LTC3026-1的Datasheet PDF文件第5页浏览型号LTC3026-1的Datasheet PDF文件第6页浏览型号LTC3026-1的Datasheet PDF文件第7页 
LTC3026-1  
1.5A Low Input Voltage  
VLDO Linear Regulator  
FEATURES  
DESCRIPTION  
The LTC®3026-1 is a very low dropout (VLDO™) linear  
regulator that can operate at input voltages down to  
1.14V. The device is capable of supplying 1.5A of output  
current with a typical dropout voltage of only 100mV.  
Output current comes directly from the input supply to  
maximize efficiency.  
n
Input Voltage Range: 1.14V to 5.5V  
n
Low Dropout Voltage: 100mV at I  
= 1.5A  
OUT  
n
n
n
n
n
Adjustable Output Range: 0.4V to 2.6V  
Output Current: Up to 1.5A  
Excellent Supply Rejection Even Near Dropout  
Shutdown Disconnects Load from V and V  
IN  
BST  
Low Operating Current:  
The LTC3026-1 is the same as the LTC3026 but has the  
boost converter internally disabled. With the boost con-  
verterdisabled, theSWpinoftheLTC3026isreplacedwith  
a ground pin and the BST pin is replaced with a BIAS pin  
that requires an external 5V supply for operation.  
I = 95μA at V = 1.5V  
IN  
BIAS  
IN  
I
= 175μA at V  
= 5V  
BIAS  
n
Low Shutdown Current:  
I < 1μA (Typ), I  
= 0.1μA (Typ)  
IN  
BST  
n
n
n
n
Stable with 10μF or Greater Ceramic Capacitors  
Short-Circuit, Reverse Current Protected  
Overtemperature Protected  
The LTC3026-1 regulator is stable with 10μF or greater  
ceramic output capacitors. The device has a low 0.4V  
reference voltage which is used to program the output  
voltage via two external resistors. The device also has  
internal current limit, overtemperature shutdown, and  
reverse output current protection. The LTC3026-1 is avail-  
able in a small 10-lead MSOP or low profile (0.75mm)  
10-lead 3mm × 3mm DFN package.  
Available in 10-Lead MSOP and 10-Lead  
(3mm × 3mm) DFN Packages  
APPLICATIONS  
n
High Efficiency Linear Regulator  
n
Post Regulator for Switching Supplies  
L, LT, LTC, LTM, Linear Technology, the Linear logo and Burst Mode are registered trademarks  
and ThinSOT, VLDO are trademarks of Linear Technology Corporation. All other trademarks are  
the property of their respective owners.  
n
Microprocessor Supply  
TYPICAL APPLICATION  
1.2V Output Voltage from 1.5V Input Supply  
Dropout Voltage vs Output Current  
150  
LTC3026-1  
BIAS  
V
BIAS  
= 5V  
IN  
0.4V  
1μF  
V
= 1.5V  
IN  
100  
1μF  
1.2V  
1.5V  
2.0V  
+
–
V
= 1.2V,  
OUT  
ADJ  
OUT  
2.6V  
1.5A  
50  
0
8.06k  
4.02k  
C
OUT  
10μF  
OFF ON  
SHDN  
GNDS  
GND  
100k  
PG  
1.0  
1.5  
0
0.5  
30261 TA01a  
I
(A)  
OUT  
30261 TA01b  
30261f  
1
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