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参数资料
| 型号： | LTC1980EGN#TR |
| 厂商： | Linear Technology |
| 文件页数： | 1/16页 |
| 文件大小： | 0K |
| 描述： | IC PWM BATT CHARGER/CONV 24-SSOP |
| 标准包装： | 2,500 |
| 功能： | 充电管理 |
| 电池化学： | 锂离子，镍镉，镍氢 |
| 电源电压： | 2.85 V ~ 10 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 24-SSOP（0.154"，3.90mm 宽） |
| 供应商设备封装： | 24-SSOP |
| 包装： | 带卷 (TR) |
LTC1980
Combination Battery
Charger and DC/DC Converter
FEATURES
DESCRIPTIO
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■
■
■
■
■
■
■
■
■
■
Single Controller IC Includes Battery Charger
Plus DC/DC Converter
Wall Adapter Voltage May be Above or Below
Battery Voltage
LDO Controller Allows Simultaneous Charging
and Regulating from Wall Adapter Input
Standalone Li-Ion Battery Charger Including Charge
Termination, Overvoltage Protection, Shorted-Cell
Detection and Battery Recharge
Selectable 4.1V, 4.2V, 8.2V and 8.4V Float Voltages
Simple NiMH and NiCd Battery Charger
Pin Programmable Regulator Burst Mode ? Operation
and Shutdown for High Efficiency
High Efficiency Current Mode 300kHz PWM
Reduced Component Architecture
Undervoltage Protection and Soft-Start Ensures
Start-Up with Current Limited Wall Adapter
Small 24-Pin SSOP Package
The LTC ? 1980 integrates PWM power control for charg-
ing a battery and converting the battery voltage to a
regulated output or simultaneously charging the battery
while powering a system load from an unregulated AC wall
adapter. Combining these features into a single IC pro-
duces a smaller area and lower cost solution compared to
presently available multi-IC solutions. The LTC1980 shares
the discrete components for both the battery charger and
the DC/DC converter thus minimizing size and cost relative
to dual controller solutions. Both the battery charger and
DC/DC converter use a current mode flyback topology for
high efficiency and excellent transient response. Optional
Burst Mode operation and power-down mode allow power
density, efficiency and output ripple to be tailored to the
application.
The LTC1980 provides a complete Li-Ion battery charger
with charge termination timer, preset Li-Ion battery volt-
ages, overvoltage and undervoltage protection, and user-
APPLICATIO S
programmable constant-current charging. Automatic bat-
tery recharging, shorted-cell detection, and open-drain
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Digital Cameras
Handheld Computers
Personal Digital Assistants
1W to 10W Uninterruptable Power Supplies
C/10 and wall plug detect outputs are also provided. User
programming allows NiMH and NiCd battery chemistries
to be charged as well.
, LTC and LT are registered trademarks of Linear Technology Corporation.
Burst Mode is a registered trademark of Linear Technology Corporation.
Patents Pending.
TYPICAL APPLICATIO
Li-Ion Charger and DC/DC Converter Using One IC
POWER FLOW
CHARGING
BATTERY
3.3V Regulator Efficiency vs Load Current
90
Li-Ion
BATTERY
OPERATION
BAT-FET
?
?
REG-FET
SYSTEM
POWER
UNREGULATED
WALL ADAPTER
INPUT (3V TO 10V)
85
80
75
LDO/
SWITCH
70
SYSTEM LOAD
DC/DC
CONVERTERS
3.3V
1.8V
1.5V
65
60
10
100
V BAT = 3.6V
T A = 25 ° C
FIGURE 5
1000
LTC1980
1980 TA01
LOAD CURRENT (mA)
1980 G04
1980f
1
相关PDF资料 |
PDF描述 |
|---|---|
| LTC1980EGN | IC PWM BATT CHARGER/CONV 24-SSOP |
| PCG0J181MCL1GS | CAP ALUM 180UF 6.3V 20% SMD |
| FRN0.50TB | TRACER 1/2" BLACK W/WHITE 500' |
| LTC1980EGN#PBF | IC PWM BATT CHARGER/CONV 24-SSOP |
| DS1233MS-3+ | IC ECONORESET 3.3V(MC33164)8SOIC |
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| LTC1981ES5 | 制造商:Linear Technology 功能描述:MOSFET DRVR 1-OUT Hi Side 5-Pin TSOT-23 |
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| LTC1981ES5#TRMPBF | 功能描述:IC HI-SIDE SW CTRL SNGL TSOT23-5 RoHS:是 类别:集成电路 (IC) >> PMIC - MOSFET，电桥驱动器 - 外部开关 系列:- 标准包装:95 系列:- 配置:高端和低端，独立 输入类型:非反相 延迟时间:160ns 电流 - 峰:290mA 配置数:1 输出数:2 高端电压 - 最大（自引导启动）:600V 电源电压:10 V ~ 20 V 工作温度:-40°C ~ 125°C 安装类型:表面贴装 封装/外壳:8-SOIC（0.154"，3.90mm 宽） 供应商设备封装:8-SOIC 包装:管件 产品目录页面:1381 (CN2011-ZH PDF) |
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