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| 型号： | LT1511ISW#PBF |
| 厂商： | Linear Technology |
| 文件页数： | 1/16页 |
| 文件大小： | 0K |
| 描述： | IC BATT CHRGR CONST I/V 3A24SOIC |
| 标准包装： | 32 |
| 功能： | 充电管理 |
| 电池化学： | 锂离子，镍镉，镍氢 |
| 电源电压： | 6 V ~ 28 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 24-SOIC（0.295"，7.50mm 宽） |
| 供应商设备封装： | 24-SOIC |
| 包装： | 管件 |
LT1511
Constant-Current/
Constant-Voltage 3A Battery
Charger with Input Current Limiting
FEATURES
DESCRIPTIO
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Simple Design to Charge NiCd, NiMH and Lithium
Rechargeable Batteries—Charging Current
Programmed by Resistors or DAC
Adapter Current Loop Allows Maximum Possible
Charging Current During Computer Use
Precision 0.5% Accuracy for Voltage Mode Charging
High Efficiency Current Mode PWM with 4A Internal
Switch
5% Charging Current Accuracy
Adjustable Undervoltage Lockout
Automatic Shutdown When AC Adapter is Removed
Low Reverse Battery Drain Current: 3 μ A
Current Sensing Can Be at Either Terminal of the Battery
Charging Current Soft-Start
Shutdown Control
The LT ? 1511 current mode PWM battery charger is the
simplest, most efficient solution to fast charge modern
rechargeable batteries including lithium-ion (Li-Ion), nickel-
metal-hydride (NiMH) and nickel-cadmium (NiCd) that
require constant-current and/or constant-voltage charg-
ing. The internal switch is capable of delivering 3A* DC
current (4A peak current). Full-charging current can be
programmed by resistors or a DAC to within 5%. With 0.5%
reference voltage accuracy, the LT1511 meets the critical
constant-voltage charging requirement for Li-Ion cells.
A third control loop is provided to regulate the current
drawn from the AC adapter. This allows simultaneous
operation of the equipment and battery charging without
overloading the adapter. Charging current is reduced to
keep the adapter current within specified levels.
Chargers for NiCd, NiMH, Lead-Acid, Lithium
Switching Regulators with Precision Current Limit
APPLICATIO S
s
Rechargeable Batteries
s
, LTC and LT are registered trademarks of Linear Technology Corporation.
*See LT1510 for 1.5A Charger
The LT1511 can charge batteries ranging from 1V to 20V.
Ground sensing of current is not required and the battery’s
negative terminal can be tied directly to ground. A saturat-
ing switch running at 200kHz gives high charging effi-
ciency and small inductor size. A blocking diode is not
required between the chip and the battery because the
chip goes into sleep mode and drains only 3 μ A when the
wall adapter is unplugged.
R5 ?
TYPICAL APPLICATIO
D1
MBRD340
L1**
20 μ H
D2
C2
0.47 μ F
GND
SW
BOOST
LT1511
COMP1
CLP
CLN
V CC
UV
+
10 μ F
+
R7 ?
500 ?
C1
1 μ F
C IN *
10 μ F
D3
MBRD340
R S4 ?
ADAPTER
CURRENT SENSE
V IN (ADAPTER INPUT)
11V TO 28V
TO MAIN
SYSTEM POWER
UNDERVOLTAGE
LOCKOUT
MBR0540T
200pF
PROG
R6
5k
SPIN
V C
300 ?
R PROG
NOTE: COMPLETE LITHIUM-ION CHARGER,
NO TERMINATION REQUIRED. R S4 , R7
AND C1 ARE OPTIONAL FOR I IN LIMITING
*TOKIN OR UNITED CHEMI-CON/MARCON
CERAMIC SURFACE MOUNT
**20 μ H COILTRONICS CTX20-4
? SEE APPLICATIONS INFORMATION FOR
INPUT CURRENT LIMIT AND UNDERVOLTAGE LOCKOUT
OVP SENSE BAT
R S3 R S2
200 ? 200 ?
1% 1%
R S1
0.033 ?
BATTERY CURRENT
SENSE
1k
0.33 μ F
R3
390k
0.25%
BATTERY
VOLTAGE SENSE
+
C PROG
1 μ F
C OUT
22 μ F
TANT
4.93k
1%
+
+
4.2V
4.2V
V BAT
2 Li-Ion
1511 ? F01
R4
50pF
162k
0.25%
Figure 1. 3A Lithium-Ion Battery Charger
1
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LT1512 | 制造商:LINER 制造商全称:Linear Technology 功能描述:SEPIC Constant-Current/ Constant-Voltage Battery Charger |
| LT1512C | 制造商:LINER 制造商全称:Linear Technology 功能描述:SEPIC Constant-Current/ Constant-Voltage Battery Charger |
| LT1512CGN | 功能描述:IC BATT CHRGR CONST I/V 16-SSOP RoHS:否 类别:集成电路 (IC) >> PMIC - 电池管理 系列:- 标准包装:2,000 系列:Impedance Track™ 功能:燃料，电量检测计/监控器 电池化学:锂离子（Li-Ion） 电源电压:2.4 V ~ 2.6 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:20-TSSOP（0.173"，4.40mm 宽） 供应商设备封装:20-TSSOP 包装:带卷 (TR) 产品目录页面:1020 (CN2011-ZH PDF) 配用:BQ27350EVM-ND - BQ27350EVM 其它名称:296-21665-2 |
| LT1512CGN#PBF | 功能描述:IC BATT CHRGR CONST I/V 16-SSOP RoHS:是 类别:集成电路 (IC) >> PMIC - 电池管理 系列:- 标准包装:1 系列:- 功能:充电管理 电池化学:锂离子（Li-Ion）、锂聚合物（Li-Pol） 电源电压:3.75 V ~ 6 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:SC-74A，SOT-753 供应商设备封装:SOT-23-5 包装:剪切带 (CT) 产品目录页面:669 (CN2011-ZH PDF) 其它名称:MCP73831T-2ACI/OTCT |
| LT1512CGN#TR | 功能描述:IC CHARGER BATT CONST V/I 16SSOP RoHS:否 类别:集成电路 (IC) >> PMIC - 电池管理 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,500 系列:- 功能:电池监控器 电池化学:碱性，锂离子，镍镉，镍金属氢化物 电源电压:1 V ~ 5.5 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:SOT-23-6 供应商设备封装:SOT-6 包装:带卷 (TR) |
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