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參數(shù)資料
| 型號： | LTC4413EDD |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | 模擬信號調(diào)理 |
| 英文描述： | Dual 2.6A, 2.5V to 5.5V, Ideal Diodes in 3mm 3mm DFN |
| 中文描述： | SPECIALTY ANALOG CIRCUIT, PDSO10 |
| 封裝： | 3 X 3 MM, 0.75 MM HEIGHT, PLASTIC, MO-229WEED-2, DFN-10 |
| 文件頁數(shù)： | 11/12頁 |
| 文件大?。?/td> | 154K |
| 代理商： | LTC4413EDD |
11
LTC4413
4413f
APPLICATIU
If the AUX is present when a wall adapter is applied, as the
resistive divider to ENBB rises through the turn-off thresh-
old, the STAT pin will fall and MP1 will conduct allowing the
wall adapter to power the load. When the wall adapter is
removed while the AUX supply is present, the load voltage
will fall until the voltage divider at the ENBB pin falls through
its turn-on threshold. Once this occurs, the LTC4413 will
automatically connect the AUX supply to the load when the
AUX voltage exceeds the output voltage, causing the STAT
voltage to rise and disabling the external PFET.
When an AUX supply is attached, the voltage divider at
ENBA will disconnect the battery from the load, and the
auxiliary supply will provide load current, unless a wall
adapter is present as described earlier. If the auxiliary
supply is removed, the battery may again power the load,
depending on if a wall adapter is present.
W
U
U
Multiple Battery Charging
Figure 6 illustrates an application circuit for automatic dual
battery charging from a single charger. Whichever battery
has the lower voltage will receive the larger charging
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.
Figure 6
LTC4413
IDEAL
ENBA
ENBB
GND
2
4
3,11
1
5
10
9
6
STAT
INA
OUTA
470k
4413 F06
LOAD1
STAT IS HIGH
WHEN BAT1
IS CHARGING
BAT1
BATTERY
CHARGER
INPUT
IDEAL
INB
OUTB
LOAD2
BAT2
current until both battery voltages are equal, then both will
be charged. While both batteries are charging simulta-
neously, the higher capacity 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 20mV. This concept can apply to
more than two batteries. The STAT pin provides informa-
tion as to when battery 1 is being charged. For intelligent
control, the ENBA/ENBB pin inputs can be used with a
microcontroller as shown in Figure 4.
Automatic Switchover from a Battery to a Wall
Adapter and Charger
Figure 7 illustrates the LTC4413 performing the function
of automatically switching a load over from a battery to a
wall adapter while controlling an LTC4059 battery charger.
When no wall adapter is present, the LTC4413 connects
the load at OUTA from the Li-Ion battery at INA. In this
condition, the STAT voltage will be high, thereby disabling
the battery charger. If a wall adapter of a higher voltage
than the battery is connected to INB, the load voltage will
rise as the second ideal diode conducts. As soon as the
OUTA voltage exceeds INA voltage, the BAT will be discon-
nected from the load and the STAT voltage will fall, turning
on the LTC4059 battery charger and beginning a charge
cycle. If the wall adapter is removed, the voltage at INB will
collapse until it is below the load voltage. When this oc-
curs, the LTC4413 will automatically reconnect the battery
to the load and the STAT voltage will rise, disabling the
LTC4059 battery charger. One major benefit of this circuit
is that when a wall adapter is present, the user may remove
the battery and replace it without disrupting the load.
Figure 7
LTC4413
IDEAL
ENBA
ENBB
GND
2
4
3,11
1
5
10
9
6
STAT
INA
OUTA
R1
560k
4413 F07
R2
100k
1-CELL
Li-Ion
IDEAL
INB
OUTB
TO LOAD
C2
4.7
μ
F
C1
10
μ
F
C1: C0805C106K8PAC
C2: C1206C475K8PAC
V
CC
ENB
Li CC
LTC4059
PROG
WALL
ADAPTER
BAT
GND
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相關代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LTC4413EDD#PBF | 功能描述:IC IDEAL DIODE DUAL 10-DFN RoHS:是 類別:集成電路 (IC) >> PMIC - O 圈控制器 系列:- 標準包裝:1,000 系列:- 應用:電池備份，工業(yè)/汽車，大電流開關 FET 型:- 輸出數(shù):5 內(nèi)部開關:是 延遲時間 - 開啟:100ns 延遲時間 - 關閉:- 電源電壓:3 V ~ 5.5 V 電流 - 電源:250µA 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:16-SOIC（0.154"，3.90mm 寬） 供應商設備封裝:16-SOIC N 包裝:帶卷 (TR) |
| LTC4413EDD#PBF | 制造商:Linear Technology 功能描述:Power Management ICs |
| LTC4413EDD#TR | 制造商:Linear Technology 功能描述:Dual Ideal Diodes 10-Pin DFN EP T/R |
| LTC4413EDD#TRPBF | 功能描述:IC IDEAL DIODE DUAL 10-DFN RoHS:是 類別:集成電路 (IC) >> PMIC - O 圈控制器 系列:- 標準包裝:1,000 系列:- 應用:電池備份，工業(yè)/汽車，大電流開關 FET 型:- 輸出數(shù):5 內(nèi)部開關:是 延遲時間 - 開啟:100ns 延遲時間 - 關閉:- 電源電壓:3 V ~ 5.5 V 電流 - 電源:250µA 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:16-SOIC（0.154"，3.90mm 寬） 供應商設備封裝:16-SOIC N 包裝:帶卷 (TR) |
| LTC4413EDD-1#PBF | 功能描述:IC IDEAL DIODE DUAL 10-DFN RoHS:是 類別:集成電路 (IC) >> PMIC - O 圈控制器 系列:- 標準包裝:1,000 系列:- 應用:電池備份，工業(yè)/汽車，大電流開關 FET 型:- 輸出數(shù):5 內(nèi)部開關:是 延遲時間 - 開啟:100ns 延遲時間 - 關閉:- 電源電壓:3 V ~ 5.5 V 電流 - 電源:250µA 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:16-SOIC（0.154"，3.90mm 寬） 供應商設備封裝:16-SOIC N 包裝:帶卷 (TR) |
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