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LT1073CS8-5#TRPBF PDF预览

LT1073CS8-5#TRPBF

更新时间: 2024-11-24 20:09:11
品牌 Logo 应用领域
凌特 - Linear 开关光电二极管
页数 文件大小 规格书
16页 270K
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LT1073CS8-5#TRPBF 数据手册

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LT1073  
Micropower  
DC/DC Converter  
Adjustable and Fixed 5V, 12V  
FEATURES  
DESCRIPTION  
TheLT®1073isaversatilemicropowerDC/DCconverter.The  
device requires only three external components to deliver  
a fixed output of 5V or 12V. The very low minimum supply  
voltage of 1V allows the use of the LT1073 in applications  
wheretheprimarypowersourceisasinglecell.Anon-chip  
auxiliary gain block can function as a low-battery detector  
or linear post-regulator.  
n
No Design Required  
n
Operates at Supply Voltages from 1V to 30V  
n
Consumes Only 95µA Supply Current  
Works in Step-Up or Step-Down Mode  
n
n
Only Three External Off-the-Shelf Components  
Required  
n
Low-Battery Detector Comparator On-Chip  
n
User-Adjustable Current Limit  
Internal 1A Power Switch  
Average current drain of the LT1073-5 used as shown in  
theTypicalApplicationcircuitbelowisjust135µAunloaded,  
making it ideal for applications where long battery life is  
important. The circuit shown can deliver 5V at 40mA from  
an input as low as 1.25V and 5V at 10mA from a 1V input.  
n
n
Fixed or Adjustable Output Voltage Versions  
Space-Saving 8-Pin PDIP or SO-8 Package  
n
APPLICATIONS  
The device can easily be configured as a step-up or step-  
downconverter,althoughformoststep-downapplications  
or input sources greater than 3V, the LT1173 is recom-  
mended. Switch current limiting is user-adjustable by  
adding a single external resistor. Unique reverse-battery  
protection circuitry limits reverse current to safe, non-  
destructive levels at reverse supply voltages up to 1.6V.  
n
Pagers  
n
Cameras  
n
Single-Cell to 5V Converters  
n
Battery Backup Supplies  
n
Laptop and Palmtop Computers  
n
Cellular Telephones  
Portable Instruments  
n
L, LTC, and LT are registered trademarks of Linear Technology Corporation.  
n
4mA to 20mA Loop Powered Instruments  
n
Hand-Held Inventory Computers  
n
Battery-Powered α, β, and γ Particle Detectors  
TYPICAL APPLICATION  
Single Alkaline “AA” Cell Operating  
Hours vs DC Load Current  
Single-Cell to 5V Converter  
1000  
CADDELL-BURNS  
7300-12  
1N5818  
82µH  
5V  
40mA  
100  
2
1
I
V
LIM  
IN  
3
8
SW1  
LT1073-5  
L = 180µH  
1.5V  
AA CELL*  
10  
SENSE  
+
100µF  
SANYO  
0S-CON  
GND  
5
SW2  
4
L = 82µH  
1
1
10  
100  
OPERATES WITH CELL VOLTAGE ≥1V  
ADD 10µF DECOUPLING CAPACITOR IF  
LOAD CURRENT (mA)  
*
LT1073 TA02  
BATTERY IS MORE THAN 2" AWAY FROM LT1073  
1073 TA01  
1

LT1073CS8-5#TRPBF 替代型号

型号 品牌 替代类型 描述 数据表
LT1073CS8-5#TR Linear

类似代替

LT1073 - Micropower DC-DC Converter Adjustable and Fixed 5V, 12V; Package: SO; Pins: 8; Te
LT1073CS8-5#PBF Linear

类似代替

LT1073 - Micropower DC-DC Converter Adjustable and Fixed 5V, 12V; Package: SO; Pins: 8; Te

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