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參數(shù)資料
| 型號： | LT1513 |
| 廠商： | Linear Technology Corporation |
| 英文描述： | SEPIC Constant- or Programmable-Current/ Constant-Voltage Battery Charger(初級線圈感應(yīng)轉(zhuǎn)換，恒定電流或可編程電流/恒定電壓電池充電器) |
| 中文描述： | SEPIC拓撲的恒定或可編程電流/恒定電壓電池充電器（初級線圈感應(yīng)轉(zhuǎn)換，恒定電流或可編程電流/恒定電壓電池充電器） |
| 文件頁數(shù)： | 1/16頁 |
| 文件大?。?/td> | 258K |
| 代理商： | LT1513 |
1
LT1513/LT1513-2
SEPIC Constant- or
Programmable-Current/
Constant-Voltage Battery Charger
The LT
1513 is a 500kHz current mode switching regula-
tor specially configured to create a constant- or program-
mable-current/constant-voltage battery charger. In addition
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
current sense circuit to be ground referred and completely
separated from the battery itself, simplifying battery switch-
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.
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.
DESCRIPTIO
N
U
I
Charger Input Voltage May Be Higher, Equal to or
Lower Than Battery Voltage
I
Charges Any Number of Cells Up to 20V
I
1% Voltage Accuracy for Rechargeable Lithium
Batteries
I
100mV Current Sense Voltage for High Efficiency
(LT1513)
I
0mV Current Sense Voltage for Easy Current
Programming (LT1513-2)
I
Battery Can Be Directly Grounded
I
500kHz Switching Frequency Minimizes
Inductor Size
I
Charging Current Easily Programmable or Shut Down
APPLICATIO
S
U
FEATURES
INPUT VOLTAGE (V)
0
5
C
2.4
2.2
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
25
LT1513 TA02
10
15
20
30
12V
INDUCTOR = 10
μ
H
ACTUAL PROGRAMMED CHARGING CURRENT WILL BE
INDEPENDENT OF INPUT VOLTAGE IF IT DOES NOT
EXCEED VALUES SHOWN
SINGLE Li-Ion CELL
(4.1V)
DOUBLE Li-Ion
CELL (8.2V)
16V
20V
BATTERY
VOLTAGE
Maximum Charging Current
, LTC and LT are registered trademarks of Linear Technology Corporation.
I
Charging of NiCd, NiMH, Lead-Acid or Lithium
Rechargeable Cells
I
Precision Current Limited Power Supply
I
Constant-Voltage/Constant-Current Supply
I
Transducer Excitation
I
Universal Input CCFL Driver
Figure 1. SEPIC Charger with 1.25A Output Current
LT1513
I
FB
V
C
V
IN
L1A*
L1B*
1.25A
1
3
2
5
7
6
TAB
4
GND
V
FB
LT1513 TA01
V
SW
SYNC
AND/OR
SHUTDOWN
WALL
ADAPTER
INPUT
S/S
C3
22
μ
F
25V
C2**
4.7
μ
F
C5
0.1
μ
F
*
**
L1A, L1B ARE TWO 10
μ
H WINDINGS ON A
COMMON CORE: COILTRONICS CTX10-4
CERAMIC MARCON THCR40EIE475Z OR TOKIN 1E475ZY5U-C304
MBRD340 OR MBRS340T3. MBRD340 HAS 5
μ
A TYPICAL
LEAKAGE, MBRS340T3 50
μ
A TYPICAL
C4
0.22
μ
F
R4
39
R1
R2
R5
270
R3
0.08
C1
22
μ
F
25V
×
2
D1
CHARGE
SHUTDOWN
+
+
TYPICAL APPLICATIO
N
U
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LT1521-3 | Cap-Free, NMOS, 150mA Low Dropout Regulator with Reverse Current Protection |
| LT1521-3.3 | Paired Cable; Jacket Material:Polyvinylchloride (PVC); Leaded Process Compatible:Yes RoHS Compliant: Yes |
| LT1521IST-3.3 | Cap-Free, NMOS, 150mA Low Dropout Regulator with Reverse Current Protection |
| LT1521IST-5 | Cap-Free, NMOS, 150mA Low Dropout Regulator with Reverse Current Protection |
| LT1521-5 | Cap-Free, NMOS, 150mA Low Dropout Regulator with Reverse Current Protection |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LT-1513-110-012 | 制造商:Carling Technologies 功能描述:LT-SERIES TOGGLE SWITCH - Bulk |
| LT-1513-110-125 | 制造商:Carling Technologies 功能描述:LT-SERIES TOGGLE SWITCH - Bulk |
| LT-1513-151-012 | 制造商:Carling Technologies 功能描述:LT-SERIES TOGGLE SWITCH - Bulk |
| LT1513-2 | 制造商:LINER 制造商全稱:Linear Technology 功能描述:SEPIC Constant- or Programmable-Current/ Constant-Voltage Battery Charger |
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