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参数资料
| 型号： | LTC1980EGN |
| 厂商： | Linear Technology |
| 文件页数： | 9/16页 |
| 文件大小： | 0K |
| 描述： | IC PWM BATT CHARGER/CONV 24-SSOP |
| 标准包装： | 55 |
| 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： | 管件 |
LTC1980
OPERATIO
The LTC1980 is an IC designed to provide a regulated
voltage to a system load from an unregulated or regulated
wall adapter, or from a battery and also charge a battery,
thereby providing an uninterruptable power source for the
system. When the wall adapter is present it provides
power to the system load and, if needed, a portion of the
power can be used to simultaneously charge the battery.
If the wall adapter is removed, the LTC1980 uses the
battery as a power source to continue providing a regu-
lated output voltage to power the system.
Combining these two functions into a single IC reduces
(Figure 1). The unique bidirectional power converter to-
pology (Figure 2) accounts for much of the area savings.
A transformer based design allows the wall adapter volt-
age to be less than or greater than the battery voltage.
The LTC1980 includes a 300kHz DC/DC PWM converter
that operates in two modes. The first mode is when the wall
adapter is present and the LTC1980 is used to charge the
battery using a constant-current/constant-voltage charge
scheme. The second mode is when the wall adapter is
removed and the battery powers the LTC1980 and the
DC/DC converter generates a regulated output voltage.
circuit area compared to presently available solutions
Existing Methods
CHARGE
TERMINATION
Using the LTC1980
BATTERY
FROM
CHARGER
POWER ROUTING
WALL ADAPTER
LTC1980-BASED
POWER DESIGN
FROM WALL ADAPTER
TO SYSTEM LOAD
PWM
LOW DROPOUT
REGULATOR
TO SYSTEM LOAD
DC/DC CONVERTERS
1980 F01
DC/DC CONVERTERS
REGULATOR
Figure 1. Portable Power Systems
Li-Ion
BATTERY
T1
?
WALL
ADAPTER
Li-Ion
BATTERY
T1
?
BAT-FET
?
REG-FET
BAT-FET
?
REG-FET
SYSTEM LOAD
DC/DC
SYSTEM LOAD
DC/DC
I SENSE
R S
CONVERTERS
I SENSE
R S
CONVERTERS
LTC1980
1980 F02a
(a) Battery Charger Mode
LTC1980
1980 F02a
(b) DC/DC Converter Mode (Wall Adapter Removed)
Figure 2. LTC1980 Bidirectional Power Conversion
1980f
9
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LTC1980EGN#PBF | 功能描述:IC PWM BATT CHARGER/CONV 24-SSOP 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) |
| LTC1980EGN#TR | 功能描述:IC PWM BATT CHARGER/CONV 24-SSOP 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) |
| LTC1980EGN#TRPBF | 功能描述:IC PWM BATT CHARGER/CONV 24-SSOP 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) |
| LTC1981ES5 | 制造商:Linear Technology 功能描述:MOSFET DRVR 1-OUT Hi Side 5-Pin TSOT-23 |
| LTC1981ES5#PBF | 制造商:Linear Technology 功能描述:MOSFET DRVR 1-OUT Hi Side 5-Pin TSOT-23 制造商:Linear Technology 功能描述:DP-Power Controller, CUT TAPE Single Micropower Hi Side Sw Controller 制造商:Linear Technology 功能描述:DRIVER, MOSFET, HIGH/LOW SIDE, SOT-23, Device Type:MOSFET, Module Configuration:High Side, Low Side, Supply Voltage Min:1.8V, Supply Voltage Max:5.5V, Driver Case Style:SOT-23, No. of Pins:5, Operating Temperature Min:-40C , RoHS Compliant: Yes |
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