Datasheet > LM2696

LM2696

更新时间： 2024-11-10 02:58:51

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德州仪器 - TI		/
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描述
LM2696 3A, Constant On Time Buck Regulator

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LM2696 数据手册

LM2696

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SNVS375B –OCTOBER 2005–REVISED APRIL 2013

LM2696 3A, Constant On Time Buck Regulator

Check for Samples: LM2696

FEATURES

DESCRIPTION

The LM2696 is a pulse width modulation (PWM) buck

regulator capable of delivering up to 3A into a load.

The control loop utilizes a constant on-time control

scheme with input voltage feed forward. This provides

a topology that has excellent transient response

without the need for compensation. The input voltage

feed forward ensures that a constant switching

frequency is maintained across the entire V_INrange.

•

Input Voltage Range of 4.5V–24V

Constant On-Time

No Compensation Needed

Maximum Load Current of 3A

Switching Frequency of 100 kHz–500 kHz

Constant Frequency Across Input Range

TTL Compatible Shutdown Thresholds

Low Standby Current of 12 µA

130 mΩ Internal MOSFET Switch

The LM2696 is capable of switching frequencies in

the range of 100 kHz to 500 kHz. Combined with an

integrated 130 mΩ high side NMOS switch the

LM2696 can utilize small sized external components

and provide high efficiency. An internal soft-start and

power-good flag are also provided to allow for simple

sequencing between multiple regulators.

APPLICATIONS

•

High Efficiency Step-Down Switching

Regulators

The LM2696 is available with an adjustable output in

an exposed pad HTSSOP-16 package.

•

LCD Monitors

Set-Top Boxes

Typical Application Circuit

LM2696

EXTV

PGOOD

EXT

RON

AVIN

CBOOT

BOOT

OUT

PVIN

FB1

GND

CATCH

AVIN

OUT

FB2

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.

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