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LT1505CG

更新时间： 2024-01-17 02:59:17
品牌 Logo 应用领域
凌特 - Linear 电源电路电池电源管理电路
页数 文件大小 规格书
16页 217K
描述
Constant-Current/Voltage High Efficiency Battery Charger

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中文翻译

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LT1505CG 技术参数

生命周期：ActiveReach Compliance Code：unknown
HTS代码：8541.10.00.80风险等级：5.5
Is Samacsys：N应用：GENERAL PURPOSE
外壳连接：ISOLATED配置：SINGLE
二极管元件材料：SILICON二极管类型：RECTIFIER DIODE
JEDEC-95代码：DO-15JESD-30 代码：O-PALF-W2
最大非重复峰值正向电流：50 A元件数量：1
相数：1端子数量：2
最高工作温度：175 °C最低工作温度：-65 °C
最大输出电流：1.5 A封装主体材料：PLASTIC/EPOXY
封装形状：ROUND封装形式：LONG FORM
认证状态：Not Qualified最大重复峰值反向电压：600 V
表面贴装：NO端子形式：WIRE
端子位置：AXIALBase Number Matches：1

LT1505CG 数据手册

 浏览型号LT1505CG的Datasheet PDF文件第2页浏览型号LT1505CG的Datasheet PDF文件第3页浏览型号LT1505CG的Datasheet PDF文件第4页浏览型号LT1505CG的Datasheet PDF文件第5页浏览型号LT1505CG的Datasheet PDF文件第6页浏览型号LT1505CG的Datasheet PDF文件第7页 
LT1505  
Constant-Current/Voltage  
High Efficiency Battery Charger  
U
FEATURES  
DESCRIPTIO  
The LT®1505 PWM battery charger controller fast charges  
multiple battery chemistries including lithium-ion (Li-Ion),  
nickel-metal-hydride (NiMH) and nickel-cadmium (NiCd)  
using constant-current or constant-voltage control. Maxi-  
mum current can be easily programmed by resistors or a  
DAC. The constant-voltage output can be selected for 3 or 4  
series Li-Ion cells with 0.5% accuracy.  
■
Simple Charging of Li-Ion, NiMH and NiCd Batteries  
Very High Efficiency: Up to 97%  
■
■
■
Precision 0.5% Charging Voltage Accuracy  
Preset Battery Voltages: 12.3V, 12.6V,  
16.4V and 16.8V  
■
■
■
■
■
■
■
■
5% Charging Current Accuracy  
Charging Current Programmed by Resistor or DAC  
0.5V Dropout Voltage, Duty Cycle > 99.5%  
AC Adapter Current Limit* Maximizes Charging Rate  
Flag Indicates Li-Ion Charge Completion  
Auto Shutdown with Adapter Removal  
Only 10µA Battery Drain When Idle  
A third control loop limits the current drawn from the AC  
adapterduringcharging*.Thisallowssimultaneousopera-  
tionoftheequipmentandfastbatterychargingwithoutover-  
loading the AC adapter.  
TheLT1505canchargebatteriesrangingfrom2.5Vto20V  
with dropout voltage as low as 0.5V. Synchronous  
N-channel FETs switching at 200kHz give high efficiency  
and allow small inductor size. A diode is not required in  
series with the battery because the charger automatically  
enters a 10µA sleep mode when the wall adapter is un-  
plugged. A logic output indicates Li-Ion full charge when  
current drops to 20% of the programmed value.  
Synchronizable Up to 280kHz  
U
APPLICATIO S  
■
Notebook Computers  
■
Portable Instruments  
■
Chargers for Li-Ion, NiMH, NiCd and Lead Acid  
Rechargeable Batteries  
The LT1505 is available in a 28-pin SSOP package.  
, LTC and LT are registered trademarks of Linear Technology Corporation.  
*US Patent No. 5,723,970  
U
TYPICAL APPLICATION  
TO  
M3  
SYSTEM POWER  
Si4435  
C4  
0.1µF  
DBODY*  
D3  
R
S4  
MMSD4148T1  
V
0.025Ω  
IN  
(FROM  
C
IN  
V
CC  
BOOST BOOSTC  
GBIAS  
C2  
0.68µF  
C3  
2.2µF  
ADAPTER)  
D2  
C1  
1µF  
47µF  
R7  
500Ω  
MMSD4148T1  
35V  
M1  
Si4412  
L1  
15µH  
R
S1  
0.025Ω  
TGATE  
CLN  
CLP  
100k  
5Ω  
SW  
V
BAT  
R5  
4k  
C
M2  
D4  
OUT  
INFET  
UV  
BGATE  
12.6V  
BATTERY  
22µF  
25V  
×2  
Si4412  
MBRS140  
V
C
R6  
4k  
SYNC  
SHDN  
FLAG  
CAP  
PROG  
LT1505  
R
3k  
3 CELL  
X4  
300Ω  
V
FB  
R
R
S3  
C
R
S2  
PROG  
1µF  
0.33µF  
200Ω  
200Ω  
4.2V  
4.1V  
*BODY DIODE  
POLARITY MUST  
BE AS SHOWN  
1%  
1%  
PROG  
4.93k  
1%  
COMP1  
R1  
1k  
C7  
0.68µF  
AGND  
PGND  
NOTE: DBODY IS THE BODY DIODE OF M3  
C6  
0.1µF  
C
: SANYO OS-CON  
IN  
L1: SUMIDA CDRH127-150  
BAT2 BAT  
SENSE SPIN  
(CAN BE FROM 10µH TO 30µH)  
1505 F01  
Figure 1. Low Dropout 4A Lithium-Ion Battery Charger  
1
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中文翻译

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