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LT1513CR

更新时间： 2024-01-09 09:24:34
品牌 Logo 应用领域
凌特 - Linear 稳压器开关式稳压器或控制器电源电路电池开关式控制器
页数 文件大小 规格书
16页 303K
描述
SEPIC Constant- or Programmable-Current/ Constant-Voltage Battery Charger

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LT1513CR 技术参数

是否无铅： 含铅是否Rohs认证： 符合
生命周期：Active包装说明：PLASTIC, D2PAK-7
针数：7Reach Compliance Code：compliant
风险等级：5.09模拟集成电路 - 其他类型：BATTERY CHARGE CONTROLLER
控制模式：CURRENT-MODE最大输入电压：25 V
最小输入电压：2.7 V标称输入电压：5 V
JESD-30 代码：R-PSSO-G7JESD-609代码：e3
长度：10.2235 mm湿度敏感等级：1
功能数量：1端子数量：7
最高工作温度：125 °C最低工作温度：-40 °C
最大输出电流：5.4 A标称输出电压：1.245 V
封装主体材料：PLASTIC/EPOXY封装代码：TO-263
封装形状：RECTANGULAR封装形式：SMALL OUTLINE
峰值回流温度（摄氏度）：260认证状态：Not Qualified
座面最大高度：4.877 mm最大供电电流 (Isup)：5.5 mA
表面贴装：YES切换器配置：SINGLE
最大切换频率：580 kHz温度等级：AUTOMOTIVE
端子面层：Matte Tin (Sn) - with Nickel (Ni) barrier端子形式：GULL WING
端子节距：1.27 mm端子位置：SINGLE
处于峰值回流温度下的最长时间：30宽度：8.89 mm
Base Number Matches：1

LT1513CR 数据手册

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LT1513/LT1513-2  
SEPIC Constant- or  
Programmable-Current/  
Constant-Voltage Battery Charger  
U
DESCRIPTION  
FEATURES  
The LT®1513 is a 500kHz current mode switching regula-  
tor specially configured to create a constant- or program-  
mable-current/constant-voltagebatterycharger.Inaddition  
to the usual voltage feedback node, it has a current sense  
feedback circuit for accurately controlling output current  
of a flyback or SEPIC (Single-Ended Primary Inductance  
Converter) topology charger. These topologies allow the  
currentsensecircuittobegroundreferredandcompletely  
separatedfromthebatteryitself,simplifyingbatteryswitch-  
ing and system grounding problems. In addition, these  
topologies allow charging even when the input voltage is  
lower than the battery voltage. The LT1513 can also drive  
a CCFL Royer converter with high efficiency in floating or  
grounded mode.  
■
Charger Input Voltage May Be Higher, Equal to or  
Lower Than Battery Voltage  
■
■
Charges Any Number of Cells Up to 20V  
1% Voltage Accuracy for Rechargeable Lithium  
Batteries  
■
■
100mV Current Sense Voltage for High Efficiency  
(LT1513)  
0mV Current Sense Voltage for Easy Current  
Programming (LT1513-2)  
Battery Can Be Directly Grounded  
500kHz Switching Frequency Minimizes  
Inductor Size  
■
■
■
Charging CurrenUt Easily Programmable or Shut Down  
APPLICATIONS  
Maximum switch current on the LT1513 is 3A. This allows  
battery charging currents up to 2A for a single lithium-ion  
cell. Accuracy of 1% in constant-voltage mode is perfect  
for lithium battery applications. Charging current can be  
easily programmed for all battery types.  
■
Charging of NiCd, NiMH, Lead-Acid or Lithium  
Rechargeable Cells  
■
Precision Current Limited Power Supply  
■
Constant-Voltage/Constant-Current Supply  
Transducer Excitation  
Universal Input CCFL Driver  
■
, LTC and LT are registered trademarks of Linear Technology Corporation.  
■
U
TYPICAL APPLICATION  
Maximum Charging Current  
L1A*  
WALL  
ADAPTER  
INPUT  
•
2.4  
C2**  
7
C3  
22µF  
25V  
+
†
4.7µF  
2.2  
D1  
SINGLE Li-Ion CELL  
5
2
V
IN  
(4.1V)  
V
SW  
2.0  
1.8  
1.6  
1.4  
1.2  
1.0  
0.8  
0.6  
0.4  
1.25A  
CHARGE  
DOUBLE Li-Ion  
CELL (8.2V)  
L1B*  
LT1513  
R1  
R2  
SYNC  
6
•
S/S  
GND  
V
FB  
AND/OR  
C1  
SHUTDOWN  
SHUTDOWN  
V
C
I
+
FB  
12V  
R4  
39Ω  
22µF  
25V  
× 2  
1
3
4
TAB  
16V  
R5  
270Ω  
20V  
C4  
R3  
C5  
0.1µF  
0.22µF  
0.08Ω  
BATTERY  
VOLTAGE  
LT1513 • TA01  
*
L1A, L1B ARE TWO 10µH WINDINGS ON A  
COMMON CORE: COILTRONICS CTX10-4  
CERAMIC MARCON THCR40EIE475Z OR TOKIN 1E475ZY5U-C304  
MBRD340 OR MBRS340T3. MBRD340 HAS 5µA TYPICAL  
LEAKAGE, MBRS340T3 50µA TYPICAL  
0
5
10  
15  
20  
25  
30  
INPUT VOLTAGE (V)  
**  
†
INDUCTOR = 10µH  
ACTUAL PROGRAMMED CHARGING CURRENT WILL BE  
INDEPENDENT OF INPUT VOLTAGE IF IT DOES NOT  
EXCEED VALUES SHOWN  
LT1513 • TA02  
Figure 1. SEPIC Charger with 1.25A Output Current  
1
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