- 您现在的位置：买卖IC网 > PDF目录20344 > LTC4413EDD-2#TRPBF (Linear Technology)IC IDEAL DIODE DUAL 10-DFN PDF资料下载
参数资料
| 型号： | LTC4413EDD-2#TRPBF |
| 厂商： | Linear Technology |
| 文件页数： | 9/16页 |
| 文件大小： | 0K |
| 描述： | IC IDEAL DIODE DUAL 10-DFN |
| 标准包装： | 2,500 |
| 应用： | 手持/移动设备 |
| FET 型： | P 沟道 |
| 输出数： | 2 |
| 内部开关： | 是 |
| 延迟时间 - 开启： | 11µs |
| 延迟时间 - 关闭： | 2µs |
| 电源电压： | 2.5 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： | 10-WFDFN 裸露焊盘 |
| 供应商设备封装： | 10-DFN（3x3） |
| 包装： | 带卷 (TR) |
LTC4413-1/LTC4413-2
OPERATION
The LTC4413-1/LTC4413-2 are described with the aid of the
Block Diagram. Operation begins when the power source at
V INA or V INB rises above the undervoltage lockout (UVLO)
voltage of 2.4V and the corresponding control pin ENBA or
ENBB is low. If only the voltage at the V INA pin is present,
the internal power source (V DD ) is supplied from the V INA
pin. The ampli?er (A) pulls a current proportional to the
difference between V INA and V OUTA from the gate (V GATEA )
of the internal PFET (PA), driving this gate voltage below
V INA . This turns on PA. As V OUTA pulls up to a forward
voltage drop (V FWD ) of 15mV below V INA , the LTC4413
regulates V GATEA to maintain the small forward voltage
drop. The system is now in forward regulation and the
load at V OUTA is powered from the supply at V INA . As the
load current varies, V GATEA is controlled to maintain V FWD
until the load current exceeds the transistor’s (PA) ability
to deliver the current as V GATEA approaches GND. At this
point, the PFET behaves as a ?xed resistor, R ON , whereby
the forward voltage increases slightly with increased load
current. As the magnitude of I OUT increases further, (such
that I LOAD > I OC ) the LTC4413-1/LTC4413-2 ?xes the load
current to the constant value I OC to protect the device.
The characteristics for parameters R FWD , R ON , V FWD and
I OC are speci?ed with the aid of Figure 1, illustrating the
LTC4413-1/LTC4413-2 forward voltage drop versus that
of a Schottky.
If another supply is provided at V INB , the LTC4413-1/
LTC4413-2 likewise regulate the gate voltage on PB to
maintain the output voltage, V OUTB , just below the input
voltage V INB . If this alternate supply, V INB , exceeds the
voltage at V INA , the LTC4413-1/LTC4413-2 selects this
input voltage as the internal supply (V DD ). This second
ideal diode operates independently of the ?rst ideal diode
function.
When an alternate power source is connected to the load
at V OUTA (or V OUTB ), the LTC4413-1/LTC4413-2 sense the
increased voltage at V OUTA , and ampli?er A increases the
voltage V GATEA , reducing the current through PA. When
V OUTA is higher than V INA + V RTO , V GATEA will be pulled up
to V DD , turning off PA. The internal power source for the
LTC4413-1/LTC4413-2 (V DD ) then diverts to draw current
from the V OUTA pin, only if V OUTA is larger than V INB (or
V OUTB ). The system is now in the reverse turn-off mode.
Power to the load is being delivered from an alternate
supply, and only a small current (I LEAK ) is drawn from or
sourced to V INA to sense the potential at V INA .
When the selected channel of the LTC4413-1/LTC4413-2
is in reverse turn-off mode or both channels are disabled,
the STAT pin sinks 11μA of current (I SON ) if connected.
Channel selection is accomplished using the two ENB
pins, ENBA and ENBB. When the ENBA input is asserted
(high), PA has its gate voltage pulled to V DD , turning off
PA. A 3.5μA pull-down current on the ENB pins ensures
a low level at these inputs if left ?oating.
I OC
LTC4413-1
LTC4413-2
SLOPE: 1/R ON
I FWD
1N5817
SLOPE: 1/R FWD
0
0 V FWD
FORWARD VOLTAGE (V)
441312 F01
Figure 1. The LTC4413 vs the 1N5817
441312fd
9
相关PDF资料 |
PDF描述 |
|---|---|
| T95D156M035ESAS | CAP TANT 15UF 35V 20% 2917 |
| S270J25U2MR63V7R | CAP CER 27PF 3KV 5% RADIAL |
| LT4351CMS | IC CTRLR MOSFET DIODE-OR 10MSOP |
| BYG21K-E3/TR | DIODE 1.5A 800V 120NS DO-214AC |
| T95D156K035ESAS | CAP TANT 15UF 35V 10% 2917 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| LTC4413EDDPBF | 制造商:Linear Technology 功能描述:2-ch Ideal Diode OR Contr, LTC4413EDD |
| LTC4414EMS8 | 制造商:Linear Technology 功能描述:Power Controller 8-Pin MSOP |
| LTC4414EMS8#PBF | 功能描述:IC CNTRLR POWERPATH 8-MSOP 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) |
| LTC4414EMS8#TR | 制造商:Linear Technology 功能描述:Power Controller 8-Pin MSOP T/R |
| LTC4414EMS8#TRPBF | 功能描述:IC CNTRLR POWERPATH 8-MSOP 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) |
发布紧急采购，3分钟左右您将得到回复。