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參數(shù)資料
| 型號： | LT1512CS8 |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | CAP 220PF 250VAC CERAMIC Y2/X1 |
| 中文描述： | 2.7 A BATTERY CHARGE CONTROLLER, 580 kHz SWITCHING FREQ-MAX, PDSO8 |
| 封裝： | 0.150 INCH, PLASTIC, SOP-8 |
| 文件頁數(shù)： | 1/12頁 |
| 文件大?。?/td> | 261K |
| 代理商： | LT1512CS8 |
1
LT1512
SEPIC Constant-Current/
Constant-Voltage
Battery Charger
The LT
1512 is a 500kHz current mode switching regula-
tor specially configured to create a constant-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 sepa-
rated from the battery itself, simplifying battery switching
and system grounding problems. In addition, these to-
pologies allow charging even when the input voltage is
lower than the battery voltage.
Maximum switch current on the LT1512 is 1.5A. This
allows battery charging currents up to 1A for a single
lithium-ion cell. Accuracy of 1% in constant-voltage mode
is perfect for lithium battery applications. Charging cur-
rent can be easily programmed for all battery types.
DESCRIPTIO
N
U
APPLICATIO
S
U
I
Battery 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
*Maximum Input Voltage = 40V – V
BAT
I
Charger Input Voltage May Be Higher, Equal to or
Lower Than Battery Voltage
I
Charges Any Number of Cells Up to 30V*
I
1% Voltage Accuracy for Rechargeable Lithium
Batteries
I
100mV Current Sense Voltage for High Efficiency
I
Battery Can Be Directly Grounded
I
500kHz Switching Frequency Minimizes
Inductor Size
I
Charging Current Easily Programmable or Shut Down
FEATURES
, LTC and LT are registered trademarks of Linear Technology Corporation.
TYPICAL APPLICATIO
N
U
Figure 1. SEPIC Charger with 0.5A Output Current
Maximum Charging Current
ACTUAL PROGRAMMED CHARGING CURRENT WILL BE INDEPENDENT OF
INPUT VOLTAGE AND BATTERY VOLTAGE IF IT DOES NOT EXCEED THE
VALUES SHOWN. THESE ARE ELECTRICAL LIMITATIONS BASED ON MAXIMUM
SWITCH CURRENT. PACKAGE THERMAL LIMITATIONS MAY REDUCE
MAXIMUM CHARGING CURRENT. SEE APPLICATIONS INFORMATION.
INPUT VOLTAGE (V)
0
C
0.6
0.8
1.0
20
1512 TA02
0.4
0.2
0
5
10
15
25
INDUCTOR = 33
μ
H
DOUBLE
LITHIUM
CELL (8.2V)
6V BATTERY
12V BATTERY
SINGLE
LITHIUM
CELL (4.1V)
LT1512
I
FB
V
C
V
IN
L1 A*
L1 B*
0.5A
GND GND S
FB
1512 F01
V
SW
SYNC
AND/OR
SHUTDOWN
WALL
ADAPTER
INPUT
S/S
C3
22
μ
F
25V
C2**
2.2
μ
F
C5
0.1
μ
F
R5
1k
*
TOKIN CERAMIC 1E225ZY5U-C203-F
**
L1 A, L1 B ARE TWO 33
μ
H WINDINGS ON A
C4
0.22
μ
F
R4
24
+
CHARGE
SHUTDOWN
R1
R2
R3
0.2
C1
22
μ
F
25V
+
D1
MBRS130LT3
相關PDF資料 |
PDF描述 |
|---|---|
| LT1512CN8 | SEPIC Constant-Current/ Constant-Voltage Battery Charger |
| LT1512C | Octal Bus Transceivers 20-PDIP 0 to 70 |
| LT1512I | Octal Bus Transceivers 20-PDIP 0 to 70 |
| LT1512IN8 | SEPIC Constant-Current/ Constant-Voltage Battery Charger |
| LT1512IS8 | SEPIC Constant-Current/ Constant-Voltage Battery Charger |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| LT1512CS8#PBF | 功能描述:IC BATT CHRGR CONST I/V 8-SOIC RoHS:是 類別:集成電路 (IC) >> PMIC - 電池管理 系列:- 其它有關文件:STC3100 View All Specifications 特色產品:STC3100 - Battery Monitor IC 標準包裝:4,000 系列:- 功能:燃料，電量檢測計/監(jiān)控器 電池化學:鋰離子（Li-Ion） 電源電壓:2.7 V ~ 5.5 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:8-TSSOP，8-MSOP（0.118"，3.00mm 寬） 供應商設備封裝:8-MiniSO 包裝:帶卷 (TR) 其它名稱:497-10526-2 |
| LT1512CS8#TR | 功能描述:IC CHARGER BATT CONST V/I 8SOIC RoHS:否 類別:集成電路 (IC) >> PMIC - 電池管理 系列:- 產品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:2,500 系列:- 功能:電池監(jiān)控器 電池化學:堿性，鋰離子，鎳鎘，鎳金屬氫化物 電源電壓:1 V ~ 5.5 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:SOT-23-6 供應商設備封裝:SOT-6 包裝:帶卷 (TR) |
| LT1512CS8#TRPBF | 功能描述:IC BATT CHRGR CONST I/V 8-SOIC RoHS:是 類別:集成電路 (IC) >> PMIC - 電池管理 系列:- 產品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:2,500 系列:- 功能:電池監(jiān)控器 電池化學:堿性，鋰離子，鎳鎘，鎳金屬氫化物 電源電壓:1 V ~ 5.5 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:SOT-23-6 供應商設備封裝:SOT-6 包裝:帶卷 (TR) |
| LT1512CS8PBF | 制造商:Linear Technology 功能描述:LT1512CS8PBF |
| LT1512I | 制造商:LINER 制造商全稱:Linear Technology 功能描述:SEPIC Constant-Current/ Constant-Voltage Battery Charger |
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