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參數(shù)資料
| 型號： | LT4351 |
| 廠商： | Linear Technology Corporation |
| 英文描述： | MOSFET Diode-OR Controller |
| 中文描述： | MOSFET的二極管或控制器 |
| 文件頁數(shù)： | 5/20頁 |
| 文件大?。?/td> | 270K |
| 代理商： | LT4351 |
LT4351
5
sn4351 4351fs
PIU
GATE (Pin 1):
MOSFET Gate Drive Pin. This pin is tied to
the gate(s) of the external N-channel MOSFET(s). The
GATE pin drives high when UV is above the V
UV(TH)
threshold, OV is below the V
OV(TH)
threshold and V
IN
is
greater than OUT by 15mV. When not driven high, GATE
actively pulls to GND. GATE can sink or source up to
600mA.
V
DD
(Pin 2):
Gate Drive Supply Pin. This is the supply pin
for the gate drive amplifier. It is either generated by the
onboard boost regulator or supplied externally. When
turning on the MOSFET(s), a large high current pulse flows
through this pin. Bypass the pin with a 1
μ
F capacitor
placed in close proximity to the part. The voltage on this
pin is also the feedback for the boost regulator. If the V
DD
voltage exceeds the V
IN
voltage by 10.7V, the boost switch
is held off.
V
IN
(Pin 3):
Input Supply Pin. This pin is the supply pin for
the control circuitry and the boost regulator. It is also one
input in conjunction with OUT for controlling the
MOSFET(s). Bypassing should include a low ESR/ESL
capacitor placed in close proximity to the part.
SW (Pin 4):
Boost Regulator Switch Pin. This pin is the
boost regulator switch output. It is connected to the boost
inductor and the boost diode. Peak switch current is
limited internally to 450mA. If an external V
DD
supply is
used, leave this pin open.
GND (Pin 5):
Device Ground Pin. This pin is ground for the
boost switch, gate driver as well as the control circuitry.
Tie the V
IN
and V
DD
bypass capacitors and ground plane
close to this pin to minimize the effects of switching
currents on part performance.
Typical SW Pin Waveform
SW Pin Waveform at Maximum
Boost Regulator Output
V
5V/DIV
V
IN
= 5V
4.7
μ
H INDUCTOR
10
μ
s/DIV
3451 G12
V
5V/DIV
V
IN
= 5V
4.7
μ
H INDUCTOR
10
μ
s/DIV
3451 G13
TYPICAL PERFOR U
Specifications are at T
A
= 25
°
C unless otherwise specified.
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| LT4351CMS | 功能描述:IC CTRLR MOSFET DIODE-OR 10MSOP RoHS:否 類別:集成電路 (IC) >> PMIC - O 圈控制器 系列:- 標準包裝:1,000 系列:- 應(yīng)用:電池備份，工業(yè)/汽車，大電流開關(guān) FET 型:- 輸出數(shù):5 內(nèi)部開關(guān):是 延遲時間 - 開啟:100ns 延遲時間 - 關(guān)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(yīng)商設(shè)備封裝:16-SOIC N 包裝:帶卷 (TR) |
| LT4351CMS#PBF | 功能描述:IC CTLR MOSFET DIODE-OR 10MSOP 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(yīng)用:電池備份，工業(yè)/汽車，大電流開關(guān) FET 型:- 輸出數(shù):5 內(nèi)部開關(guān):是 延遲時間 - 開啟:100ns 延遲時間 - 關(guān)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(yīng)商設(shè)備封裝:16-SOIC N 包裝:帶卷 (TR) |
| LT4351CMS#TR | 功能描述:IC CTRLR MOSFET DIODE-OR 10MSOP RoHS:否 類別:集成電路 (IC) >> PMIC - O 圈控制器 系列:- 標準包裝:1,000 系列:- 應(yīng)用:電池備份，工業(yè)/汽車，大電流開關(guān) FET 型:- 輸出數(shù):5 內(nèi)部開關(guān):是 延遲時間 - 開啟:100ns 延遲時間 - 關(guān)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(yīng)商設(shè)備封裝:16-SOIC N 包裝:帶卷 (TR) |
| LT4351CMS#TRPBF | 功能描述:IC CTRLR MOSFET DIODE-OR 10MSOP 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(yīng)用:電池備份，工業(yè)/汽車，大電流開關(guān) FET 型:- 輸出數(shù):5 內(nèi)部開關(guān):是 延遲時間 - 開啟:100ns 延遲時間 - 關(guān)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(yīng)商設(shè)備封裝:16-SOIC N 包裝:帶卷 (TR) |
| LT4351IMS | 功能描述:IC CTRLR MOSFET DIODE-OR 10MSOP RoHS:否 類別:集成電路 (IC) >> PMIC - O 圈控制器 系列:- 標準包裝:1,000 系列:- 應(yīng)用:電池備份，工業(yè)/汽車，大電流開關(guān) FET 型:- 輸出數(shù):5 內(nèi)部開關(guān):是 延遲時間 - 開啟:100ns 延遲時間 - 關(guān)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(yīng)商設(shè)備封裝:16-SOIC N 包裝:帶卷 (TR) |
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