Datasheet > LTC4443-1

LTC4443-1

更新时间： 2024-11-13 05:43:59

品牌	Logo	应用领域
凌特 - Linear		驱动器
页数	文件大小	规格书
12页	146K
描述
High Speed Synchronous N-Channel MOSFET Drivers

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中文翻译

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数据手册

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LTC4443-1 数据手册

LTC4443/LTC4443-1

High Speed Synchronous

N-Channel MOSFET Drivers

FEATURES

DESCRIPTION

TheLTC^®4443isahighfrequencygatedriverwithintegrated

bootstrapSchottkydiodedesignedtodrivetwoN-channel

MOSFETsinasynchronousbuckDC/DCconvertertopology.

The powerful driver capability reduces switching losses

in MOSFETs with high gate capacitance.

Integrated Schottky Diode

Wide V Range: 6V to 9.5V

38V Maximum Input Supply Voltage

Adaptive Shoot-Through Protection

2.4A Peak Pull-Up Current

5A Peak Pull-Down Current

The LTC4443 features a separate supply for the input logic

to match the signal swing of the controller IC. If the input

signalisnotbeingdriven,theLTC4443activatesashutdown

mode that turns off both external MOSFETs. The input

logic signal is internally level-shifted to the bootstrapped

supply, which may function at up to 42V above ground.

The Schottky diode required for the bootstrapped supply

is integrated to simplify layout and reduce parts count.

8ns TG Fall Time Driving 3000pF Load

12ns TG Rise Time Driving 3000pF Load

Separate Supply to Match PWM Controller

Drives Dual N-Channel MOSFETs

Undervoltage Lockout

Low Proﬁle (0.75mm) 3mm × 3mm DFN Package

APPLICATIONS

The LTC4443 contains undervoltage lockout circuits on

both the driver and logic supplies that turn off the external

MOSFETs when an undervoltage condition is present.

The LTC4443 and LTC4443-1 have different undervoltage

lockout thresholds to accommodate a wide variety of ap-

plications.Anadaptiveshoot-throughprotectionfeatureis

also built-in to prevent power loss resulting from MOSFET

cross-conduction current.

Distributed Power Architectures

High Density Power Modules

L, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.

All other trademarks are the property of their respective owners.

The LTC4443/LTC4443-1 are available in a tiny 3mm ×

3mm DFN package.

TYPICAL APPLICATION

Synchronous Buck Converter Driver

LTC4443 Driving 3000pF Capacitive Loads

32V

INPUT (IN)

5V/DIV

BOOST

LOGIC

LTC4443

GND

OUT

BOTTOM

GATE (BG)

5V/DIV

PWM

4443 TA01a

TOP GATE

(TG-TS)

5V/DIV

4443 TA01b

10ns/DIV

4443fa

12 3 4 5 6 7...12

中文翻译

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与LTC4443-1相关器件

型号	品牌	获取价格	描述	数据表
LTC4443EDD#PBF	Linear	获取价格	Half Bridge Based MOSFET Driver, 2.4A, PDSO12
LTC4443EDD-1#PBF	Linear	获取价格	IC 2.4 A HALF BRDG BASED MOSFET DRIVER, PDSO12, 3 X 3 MM, 0.75 MM HEIGHT, LEAD FREE, PLAST
LTC4443EDD-1-PBF	Linear	获取价格	High Speed Synchronous N-Channel MOSFET Drivers
LTC4443EDD-1-TRPBF	Linear	获取价格	High Speed Synchronous N-Channel MOSFET Drivers
LTC4443EDD-PBF	Linear	获取价格	High Speed Synchronous N-Channel MOSFET Drivers
LTC4443EDD-TRPBF	Linear	获取价格	High Speed Synchronous N-Channel MOSFET Drivers
LTC4443IDD#TRPBF	Linear	获取价格	IC 2.4 A HALF BRDG BASED MOSFET DRIVER, PDSO12, 3 X 3 MM, 0.75 MM HEIGHT, LEAD FREE, PLAST
LTC4443IDD-1#TRPBF	Linear	获取价格	IC 2.4 A HALF BRDG BASED MOSFET DRIVER, PDSO12, 3 X 3 MM, 0.75 MM HEIGHT, LEAD FREE, PLAST
LTC4443IDD-1-PBF	Linear	获取价格	High Speed Synchronous N-Channel MOSFET Drivers
LTC4443IDD-1-TRPBF	Linear	获取价格	High Speed Synchronous N-Channel MOSFET Drivers

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