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參數(shù)資料
| 型號： | LT3800 |
| 廠商： | Linear Technology Corporation |
| 元件分類： | 基準電壓源/電流源 |
| 英文描述： | RADIATION HARDENED HIGH EFFICIENCY, 5 AMP SWITCHING REGULATORS |
| 中文描述： | 抗輻射高效，5安培開關(guān)穩(wěn)壓器 |
| 文件頁數(shù)： | 7/24頁 |
| 文件大?。?/td> | 240K |
| 代理商： | LT3800 |
LT3724
7
3724f
SW (Pin 14):
In step-down applications the SW pin is
connected to the cathode of an external clamping Schottky
diode, the drain of the power MOSFET and the inductor.
The SW node voltage swing is from V
IN
during the on-time
of the power MOSFET, to a Schottky voltage drop below
ground during the off-time of the power MOSFET. In start-
up and in operating modes where there is insufficient
inductor current to freewheel the Schottky diode, an
internal switch is turned on to pull the SW pin to ground
so that the BOOST pin capacitor can be charged. Give
careful consideration in choosing the Schottky diode to
limit the negative voltage swing on the SW pin.
TG (Pin 15):
The TG pin is the bootstrapped gate drive for
the top N-Channel MOSFET. Since very fast high currents
are driven from this pin, connect it to the gate of the power
MOSFET with a short and wide, typically 0.02” width, PCB
trace to minimize inductance.
BOOST (Pin 16):
The BOOST pin is the supply for the
bootstrapped gate drive and is externally connected to a
low ESR ceramic boost capacitor referenced to SW pin.
The recommended value of the BOOST capacitor,C
BOOST
,
is 50 times greater that the total input capacitance of the
topside MOSFET. In most applications 0.1
μ
F is adequate.
The maximum voltage that this pin sees is V
IN
+ V
CC
,
ground referred, and is limited to 75V.
Exposed Pad (SGND) (Pin 17):
The exposed leadframe is
internally connected to the SGND pin. Solder the exposed
pad to the PCB ground for electrical contact and optimal
thermal performance.
PIU
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LT3800EFE | 制造商:Linear Technology 功能描述:Conv DC-DC Single Step Down 4V to 60V 16-Pin TSSOP EP |
| LT3800EFE#PBF | 功能描述:IC REG CTRLR INV PWM CM 16-TSSOP RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 切換控制器 系列:- 特色產(chǎn)品:LM3753/54 Scalable 2-Phase Synchronous Buck Controllers 標準包裝:1 系列:PowerWise® PWM 型:電壓模式 輸出數(shù):1 頻率 - 最大:1MHz 占空比:81% 電源電壓:4.5 V ~ 18 V 降壓:是 升壓:無 回掃:無 反相:無 倍增器:無 除法器:無 Cuk:無 隔離:無 工作溫度:-5°C ~ 125°C 封裝/外殼:32-WFQFN 裸露焊盤 包裝:Digi-Reel® 產(chǎn)品目錄頁面:1303 (CN2011-ZH PDF) 其它名稱:LM3754SQDKR |
| LT3800EFE#TRPBF | 功能描述:IC REG CTRLR INV PWM CM 16-TSSOP RoHS:否 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 切換控制器 系列:- 標準包裝:2,500 系列:- PWM 型:電流模式 輸出數(shù):1 頻率 - 最大:500kHz 占空比:96% 電源電壓:4 V ~ 36 V 降壓:無 升壓:是 回掃:無 反相:無 倍增器:無 除法器:無 Cuk:無 隔離:無 工作溫度:-40°C ~ 125°C 封裝/外殼:24-WQFN 裸露焊盤 包裝:帶卷 (TR) |
| LT3800EFEPBF | 制造商:Linear Technology 功能描述:DC-DC Converter Step-Down 4-60V TSSOP16 |
| LT3800EFE-PBF | 制造商:LINER 制造商全稱:Linear Technology 功能描述:High-Voltage Synchronous Current Mode Step-Down Controller |
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