Datasheet > LM27222

LM27222

更新时间： 2024-11-22 02:58:51

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LM27222 High-Speed 4.5A Synchronous MOSFET Driver

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LM27222 数据手册

LM27222

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SNVS306B –SEPTEMBER 2004–REVISED MARCH 2013

LM27222 High-Speed 4.5A Synchronous MOSFET Driver

Check for Samples: LM27222

FEATURES

DESCRIPTION

The LM27222 is a dual N-channel MOSFET driver

designed to drive MOSFETs in push-pull

configurations as typically used in synchronous buck

regulators. The LM27222 takes the PWM output from

a controller and provides the proper timing and drive

levels to the power stage MOSFETs. Adaptive shoot-

through protection prevents damaging and efficiency

reducing shoot-through currents, thus ensuring a

robust design capable of being used with nearly any

MOSFET. The adaptive shoot-through protection

circuitry also reduces the dead time down to as low

as 10ns, ensuring the highest operating efficiency.

The peak sourcing and sinking current for each driver

of the LM27222 is about 3A and 4.5Amps

respectively with a Vgs of 5V. System performance is

also enhanced by keeping propagation delays down

to 8ns. Efficiency is once again improved at all load

•

Adaptive Shoot-through Protection

10ns Dead Time

8ns Propagation Delay

30ns Minimum On-time

0.4Ω Pull-down and 0.9Ω Pull-up Drivers

4.5A Peak Driving Current

MOSFET Tolerant Design

5µA Quiescent Current

30V Maximum Input Voltage in Buck

Configuration

•

4V to 6.85V Operating Voltage

SOIC-8 and WSON Packages

APPLICATIONS

currents

supporting

synchronous,

non-

synchronous, and diode emulation modes through the

LEN pin. The minimum output pulse width realized at

the output of the MOSFETs is as low as 30ns. This

enables high operating frequencies at very high

conversion ratios in buck regulator designs. To

support low power states in notebook systems, the

LM27222 draws only 5µA from the 5V rail when the

IN and LEN inputs are low or floating.

•

High Current Buck And Boost Voltage

Converters

•

Fast Transient DC/DC Power Supplies

Single Ended Forward Output Rectification

CPU And GPU Core Voltage Regulators

Typical Application

VCC

4V to 6.85V

up to 30V

0.33 mF

(to controller)

OUT

LEN

LM27222

0.5V to

Vin - 0.5V

GND

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of

Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

All trademarks are the property of their respective owners.

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.

12 3 4 5 6 7...16

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与LM27222相关器件

型号	品牌	获取价格	描述	数据表
LM27222_15	TI	获取价格	LM27222 High-Speed 4.5A Synchronous MOSFET Driver
LM27222M	NSC	获取价格	High-Speed 4.5A Synchronous MOSFET Driver
LM27222M	TI	获取价格	LM27222 High-Speed 4.5A Synchronous MOSFET Driver
LM27222M/NOPB	NSC	获取价格	IC HALF BRDG BASED MOSFET DRIVER, PDSO8, ROHS COMPLIANT, SOP-8, MOSFET Driver
LM27222M/NOPB	TI	获取价格	LM27222 High-Speed 4.5A Synchronous MOSFET Driver
LM27222MX	NSC	获取价格	High-Speed 4.5A Synchronous MOSFET Driver
LM27222MX/NOPB	TI	获取价格	LM27222 High-Speed 4.5A Synchronous MOSFET Driver
LM27222SD	NSC	获取价格	High-Speed 4.5A Synchronous MOSFET Driver
LM27222SD	TI	获取价格	LM27222 High-Speed 4.5A Synchronous MOSFET Driver
LM27222SD/NOPB	NSC	获取价格	IC 3.2 A HALF BRDG BASED MOSFET DRIVER, DSO8, LEAD FREE, LLP-8, MOSFET Driver

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