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参数资料
| 型号： | LT1571EGN-5 |
| 厂商： | LINEAR TECHNOLOGY CORP |
| 元件分类： | 稳压器 |
| 英文描述： | Constant-Current/ Constant-Voltage Battery Charger with Preset Voltage and Termination Flag |
| 中文描述： | 2 A BATTERY CHARGE CONTROLLER, 550 kHz SWITCHING FREQ-MAX, PDSO16 |
| 封装： | 0.150 INCH, PLASTIC, SSOP-16 |
| 文件页数： | 1/16页 |
| 文件大小： | 201K |
| 代理商： | LT1571EGN-5 |
1
LT1571 Series
Constant-Current/
Constant-Voltage Battery Charger
with Preset Voltage and Termination Flag
April 2000
, LTC and LT are registered trademarks of Linear Technology Corporation.
The LT
1571 PWM battery charger is a simple, efficient
solution to fast-charge rechargeable batteries including
lithium-ion (Li-Ion), nickel-metal-hydride (NiMH) and
nickel-cadmium (NiCd) using constant-current and/or
constant-voltage control. The internal switch is capable
of delivering 1.5A DC current (2A peak current). The
onboard current sense resistor (0.1
) allows simple
charge current programming to within 5% accuracy
using a low cost external resistor. The constant-voltage
output can be selected for 4.1V or 4.2V per cell with 0.6%
accuracy.
LT1571 can charge batteries ranging from 1V to 20V. A
saturating switch operating at 200kHz (LT1571-1,
LT1571-2) or 500kHz (LT1571-5) gives high efficiency
and small charger size. A logic output (flag) indicates
Li-Ion near full charge when the charge current drops to
20% of the programmed value. The LT1571-1 and
LT1571-2 are in a 28-pin fused lead narrow SSOP power
package. The LT1571-5 is in a 16-pin fused lead narrow
SSOP power package.
I
Fast Charging of Li-Ion, NiMH and NiCd Batteries
I
Simple Charge Current Programming Requires Only
One Low Cost, 1/32W Resistor
I
High Efficiency Charger with Up to
1.5A Charge Current
I
Precision 0.6% Internal Voltage Reference
I
Preset Battery Voltages: 4.1V, 4.2V, 8.2V, 8.4V
I
500kHz or 200kHz Switching Frequency
Minimizes Charger Size
I
Low Reverse Battery Drain Current: 5
μ
A
I
Flag Indicates Li-Ion Charge Completion
I
5% Typical Charge Current Accuracy
I
Low Shutdown Current
I
LT1571-5: 500kHz, Fixed 4.1V or 4.2V
LT1571-1: 200kHz, Adjustable Voltage
LT1571-2: 200kHz, Fixed 8.2V or 8.4V
APPLICATIU
I
Cellular Phones, PDAs, Notebook Computers,
Portable Instruments
I
Cradle Chargers for Li-Ion, NiCd, NiMH and
Lead-Acid Rechargeable Batteries
Figure 1. Compact Li-Ion Cellular Phone Charger (0.8A)
SW
V
CC
PROG
6.19k
100k
V
IN
8.2V
TO 20V
CHARGE
COMPLETE
+
1571 F01
C1
0.22
μ
F
C
IN
*
10
μ
F
L1**
10
μ
H
LT1571-5
D1
MBRM120T3
D3
MBRM120T3
V
DD
D2
MMBD914L
SELECT
SENSE
GND
CAP
4.2V
Li-Ion
BATTERY
0.33
μ
F
0.1
μ
F
1k
1
μ
F
TOKIN OR MARCON CERAMIC SURFACE MOUNT
COILTRONICS TP3-100, 10
μ
H, 2.2mm HEIGHT (0.8A CHARGING CURRENT)
COILTRONICS TP1 SERIES, 10
μ
H, 1.8mm HEIGHT (<0.5A CHARGING CURRENT)
PANASONIC EEFCD1B220
***
*
**
BOOST
C
OUT
***
22
μ
F
+
V
C
BAT
BAT2
FLAG
300
Final Electrical Specifications
Information furnished by Linear Technology Corporation is believed to be accurate and reliable.
However, no responsibility is assumed for its use. Linear Technology Corporation makes no represen-
tation that the interconnection of its circuits as described herein will not infringe on existing patent rights.
FEATURES
DESCRIPTIOU
TYPICAL APPLICATIO
U
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| LT1571-2 | Constant-Current/ Constant-Voltage Battery Charger with Preset Voltage and Termination Flag |
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| LT1572CS | 100kHz, 1.25A Switching Regulator with Catch Diode |
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LT1571EGN-5#PBF | 功能描述:IC CHARGER BATT CONST V/I 16SSOP RoHS:是 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 |
| LT1571EGN-5#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) |
| LT1571EGN-5#TRPBF | 功能描述:IC CHARGER BATT CONST V/I 16SSOP RoHS:是 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) |
| LT1572 | 制造商:LINER 制造商全称:Linear Technology 功能描述:100kHz, 1.25A Switching Regulator with Catch Diode |
| LT1572CS | 功能描述:IC REG MULTI CONFIG 1.25A 16SOIC RoHS:否 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 开关稳压器 系列:- 标准包装:2,500 系列:- 类型:降压（降压） 输出类型:固定 输出数:1 输出电压:1.2V，1.5V，1.8V，2.5V 输入电压:2.7 V ~ 20 V PWM 型:- 频率 - 开关:- 电流 - 输出:50mA 同步整流器:是 工作温度:-40°C ~ 125°C 安装类型:表面贴装 封装/外壳:10-TFSOP，10-MSOP（0.118"，3.00mm 宽）裸露焊盘 包装:带卷 (TR) 供应商设备封装:10-MSOP 裸露焊盘 |
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