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参数资料
| 型号： | LTC4411ES5#TRMPBF |
| 厂商： | Linear Technology |
| 文件页数： | 7/8页 |
| 文件大小： | 0K |
| 描述： | IC IDEAL DIODE LOW LOSS TSOT23-5 |
| 标准包装： | 1 |
| 应用： | 手持/移动设备 |
| FET 型： | P 沟道 |
| 输出数： | 1 |
| 内部开关： | 是 |
| 延迟时间 - 开启： | 1.2µs |
| 延迟时间 - 关闭： | 1.1µs |
| 电源电压： | 2.6 V ~ 5.5 V |
| 电流 - 电源： | 40µA |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | SOT-23-5 细型，TSOT-23-5 |
| 供应商设备封装： | TSOT-23-5 |
| 包装： | 标准包装 |
| 产品目录页面： | 1338 (CN2011-ZH PDF) |
| 其它名称： | LTC4411ES5#TRMPBFDKR |
LTC4411
APPLICATIO S I FOR ATIO
tion mode, the forward voltage will be kept low by control-
ling the gate voltage of the internal MOSFET to react to
changes in load current. Should the wall adapter input be
applied, the Schottky diode will pull up the output voltage,
connected to the load, above the battery voltage. The
LTC4411 will sense that the output voltage is higher than
the battery voltage and will turn off the internal MOSFET.
The STAT pin will then sink current indicating an auxiliary
input is connected. The battery is now supplying no load
current and all load current flows through the Schottky
diode.
Microcontrolled PowerPath Monitoring and Control
Figure 6 illustrates an application circuit for microcontroller
monitoring and control of two power sources. The
microcontroller’s analog inputs, perhaps with the aid of a
resistor voltage divider, monitors each supply input and
commands the LTC4411 through the CTL input. Back-to-
turn off and no load current will be drawn from the
batteries. The STAT pins provide information as to which
input is supplying the load current. This concept can be
expanded to more power inputs.
Multiple Battery Charging
Figure 7 illustrates an application circuit for automatic dual
battery charging from a single charger. Whichever battery
has the lower voltage will receive the charging current until
both battery voltages are equal, then both will be charged.
When both are charging simultaneously, the higher ca-
pacity battery will get proportionally higher current from
the charger. For Li-Ion batteries, both batteries will achieve
the float voltage minus the forward regulation voltage of
40mV. This concept can apply to more than two batteries.
The STAT pin provides information as to which batteries
are being charged. For intelligent control, the CTL pin input
can be used with a microcontroller as shown in Figure 5.
back MOSFETs are used so that the parasitic drain-source
diode will not power the load when the MOSFET is turned
off (dual MOSFETs in one package are commercially
available).
AUXILIARY P-CHANNEL
MOSFETS
C IN
1 μ F
WALL
ADAPTER
INPUT
BAT1
1
2
3
IN OUT
LTC4411
GND
CTL STAT
5
4
V CC
470k
C OUT
4.7 μ F
TO
LOAD
STATUS IS HIGH WHEN
BAT1 IS SUPPLYING
LOAD CURRENT
AUXILIARY
POWER
SOURCE
R1
WHEN BOTH STATUS LINES ARE
HIGH, THEN BOTH BATTERIES
ARE SUPPLYING LOAD CURRENT.
SOURCE
V CC
C OUT : C1206C475K8PAC
MICROCONTROLLER
PRIMARY
POWER
C1
10 μ F
1
2
IN OUT
LTC4411
GND
470k
5
C2
4.7 μ F
LOAD
C IN
1 μ F
BAT2
1
2
3
IN OUT
LTC4411
GND
CTL STAT
WHEN BOTH STATUS LINES ARE
LOW, THEN WALL ADAPTER IS
PRESENT AND SUPPLYING FULL
LOAD CURRENT
470k
STATUS IS HIGH WHEN
BAT2 IS SUPPLYING
LOAD CURRENT
C IN : C0805C105K8PAC
4411 F06
C1: C0805C106K8PAC
C2: C1206C475K8PAC
3
CTL
STAT
4
4411 F05
STATUS
Figure 6. Dual Battery Load Sharing with Automatic
Switchover of Load from Batteries to Wall Adapter
Figure 5. Automatic Switchover of Load Between a
Primary and an Auxiliary Power Source with External
Dual P-Channel MOSFETs
Load Sharing
Figure 6 illustrates an application circuit for dual battery
load sharing with automatic switchover of load from
BATTERY
CHARGER
INPUT
1
2
3
IN OUT
LTC4411
GND
CTL STAT
5
4
BAT1
V CC
470k
TO LOAD OR
PowerPath
CONTROLLER
STATUS IS HIGH
WHEN BAT1 IS
CHARGING
TO LOAD OR
batteries to wall adapter. Whichever battery is capable of
PowerPath
CONTROLLER
supplying the higher voltage will provide the load current
until it is discharged to the voltage of the other battery. The
load will then be shared between the two batteries accord-
1
2
3
IN OUT
LTC4411
GND
CTL STAT
BAT2
V CC
470k
STATUS IS HIGH
WHEN BAT2 IS
ing to the capacity of each battery. The higher capacity
CHARGING
4411 F07
battery will provide proportionally higher current to the
load. When a wall adapter input is applied, both LTC4411s
Figure 7. Automatic Dual Battery Charging
from a Single Charging Source
4411fa
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.
7
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LTC4412ES6 | 制造商:Linear Technology 功能描述: |
| LTC4412ES6#PBF | 制造商:Linear Technology 功能描述:Power Controller 6-Pin TSOT-23 制造商:Linear Technology 功能描述:Power Controller 6-Pin TSOT-23 Bulk 制造商:Linear Technology 功能描述:IC AC/DC CONTROLLER 6-SOT-23 制造商:Linear Technology 功能描述:IC, LOW LOSS POWERPATH CONTRL, 6-SOT-23 制造商:Linear Technology 功能描述:IC, LOW LOSS POWERPATH CONTRL, 6-SOT-23; Input Voltage:36V; Supply Voltage Min:2.5V; Supply Voltage Max:28V; No. of Pins:6; No. of Outputs:1; Operating Temperature Min:-40C; Operating Temperature Max:85C; MSL:MSL 1 - Unlimited ;RoHS Compliant: Yes |
| LTC4412ES6#TR | 功能描述:IC CTRLR LOWLOS PWRPATH TSOT23-6 RoHS:否 类别:集成电路 (IC) >> PMIC - O 圈控制器 系列:PowerPath™ 标准包装:1,000 系列:- 应用:电池备份，工业/汽车，大电流开关 FET 型:- 输出数:5 内部开关:是 延迟时间 - 开启:100ns 延迟时间 - 关闭:- 电源电压:3 V ~ 5.5 V 电流 - 电源:250µA 工作温度:0°C ~ 70°C 安装类型:表面贴装 封装/外壳:16-SOIC（0.154"，3.90mm 宽） 供应商设备封装:16-SOIC N 包装:带卷 (TR) |
| LTC4412ES6#TRM | 功能描述:IC CTRLR LOWLOS PWRPATH TSOT23-6 RoHS:否 类别:集成电路 (IC) >> PMIC - O 圈控制器 系列:PowerPath™ 标准包装:1,000 系列:- 应用:电池备份，工业/汽车，大电流开关 FET 型:- 输出数:5 内部开关:是 延迟时间 - 开启:100ns 延迟时间 - 关闭:- 电源电压:3 V ~ 5.5 V 电流 - 电源:250µA 工作温度:0°C ~ 70°C 安装类型:表面贴装 封装/外壳:16-SOIC（0.154"，3.90mm 宽） 供应商设备封装:16-SOIC N 包装:带卷 (TR) |
| LTC4412ES6#TRMPBF | 功能描述:IC CTRLR LOWLOS PWRPATH TSOT23-6 RoHS:是 类别:集成电路 (IC) >> PMIC - O 圈控制器 系列:PowerPath™ 标准包装:1,000 系列:- 应用:电池备份，工业/汽车，大电流开关 FET 型:- 输出数:5 内部开关:是 延迟时间 - 开启:100ns 延迟时间 - 关闭:- 电源电压:3 V ~ 5.5 V 电流 - 电源:250µA 工作温度:0°C ~ 70°C 安装类型:表面贴装 封装/外壳:16-SOIC（0.154"，3.90mm 宽） 供应商设备封装:16-SOIC N 包装:带卷 (TR) |
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