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LT1054Y

更新时间： 2024-11-14 04:43:55
品牌 Logo 应用领域
德州仪器 - TI 转换器开关
页数 文件大小 规格书
27页 436K
描述
SWITCHED-CAPACITOR VOLTAGE CONVERTERS WITH REGULATORS

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LT1054Y 数据手册

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SLVS033F − FEBRUARY 1990 − REVISED NOVEMBER 2004  
P PACKAGE  
(TOP VIEW)  
D
D
D
D
D
D
D
D
Output Current . . . 100 mA  
Low Loss . . . 1.1 V at 100 mA  
Operating Range . . . 3.5 V to 15 V  
FB/SD  
CAP+  
GND  
V
CC  
OSC  
1
2
3
4
8
7
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5
Reference and Error Amplifier for  
Regulation  
V
REF  
CAP−  
V
OUT  
External Shutdown  
External Oscillator Synchronization  
Devices Can Be Paralleled  
DW PACKAGE  
(TOP VIEW)  
Pin-to-Pin Compatible With the  
LTC1044/7660  
NC  
NC  
NC  
NC  
1
2
3
4
5
6
7
8
16  
15  
14  
13  
12  
11  
10  
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description/ordering information  
V
FB/SD  
CAP+  
GND  
CAP−  
NC  
CC  
OSC  
The LT1054 is a bipolar, switched-capacitor  
voltage converter with regulator. It provides higher  
output current and significantly lower voltage  
losses than previously available converters. An  
V
REF  
V
OUT  
NC  
NC  
NC  
adaptive-switch  
drive  
scheme  
optimizes  
efficiency over a wide range of output currents.  
Total voltage drop at 100-mA output current  
typically is 1.1 V. This applies to the full  
supply-voltage range of 3.5 V to 15 V. Quiescent  
current typically is 2.5 mA.  
NC − No internal connection  
The LT1054 also provides regulation, a feature previously not available in switched-capacitor voltage  
converters. By adding an external resistive divider, a regulated output can be obtained. This output is regulated  
against changes in both input voltage and output current. The LT1054 also can be shut down by grounding the  
feedback terminal. Supply current in shutdown typically is 100 µA.  
The internal oscillator of the LT1054 runs at a nominal frequency of 25 kHz. The oscillator terminal can be used  
to adjust the switching frequency or to externally synchronize the LT1054.  
The LT1054C is characterized for operation over a free-air temperature range of 0°C to 70°C. The LT1054I is  
characterized for operation over a free-air temperature range of −40°C to 85°C.  
ORDERING INFORMATION  
ORDERABLE  
PART NUMBER  
TOP-SIDE  
MARKING  
†
PACKAGE  
T
A
PDIP (P)  
Tube of 50  
Tube of 40  
Reel of 2000  
Tube of 50  
Tube of 40  
Reel of 2000  
LT1054IP  
LT1054IP  
LT1054IDW  
LT1054IDWR  
LT1054CP  
−40°C to 85°C  
0°C to 70°C  
SOIC (DW)  
PDIP (P)  
LT1054I  
LT1054CP  
LT1054C  
LT1054CDW  
LT1054CDWR  
SOIC (DW)  
†
Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are  
available at www.ti.com/sc/package.  
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Copyright 2004, Texas Instruments Incorporated  
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1
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265  
1234567...27

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