Datasheet > LM27213_15

LM27213_15

更新时间： 2024-10-28 01:04:51

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德州仪器 - TI		/
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LM27213 Single Phase Hysteretic Buck Controller

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LM27213_15 数据手册

LM27213

www.ti.com

SNVS377A –FEBRUARY 2006–REVISED MARCH 2013

LM27213 Single Phase Hysteretic Buck Controller

Check for Samples: LM27213

FEATURES

DESCRIPTION

The LM27213 is a single-phase synchronous buck

•

Ideal Load and Line Transient Responses

5V to 30V Input Range

regulator controller designed to fully support

portable microprocessor. On-chip gate drive makes

for a compact, single chip solution. Output currents in

excess of 25 Amps are possible.

On-Chip Gate Drive

Convenient CLK_EN# Signal

Input Under-Voltage Lockout

High Light-Load Efficiency

The IC employs a current mode hysteretic control

mechanism. Inductor current is sensed through a low

value sense resistor.

Adjustable Analog Soft Start

Peak Current Limit

The LM27213 will operate over an input voltage

range of 5V to 30V. The output voltage is

programmed through 6 Voltage Identification (VID)

pins and ranges from 0.700V to 1.708V in 64 steps.

Over-Voltage Protection

Error Correction for Good Static Accuracy

±1% DAC Accuracy Over Temperature

Interfaces with the LM2647 System Supply

Available in TSSOP or WQFN Packages

Since the error in the output voltage directly sets the

inductor current, the dynamic response to a large,

fast load transient is close to a square wave. This is

optimal for mode transition requirements. Also, due to

the intrinsic input voltage feedforward characteristic of

hysteretic control, the line transient response is

excellent as well.

APPLICATIONS

•

Core Voltage Supply for Low Power

Processors

The IC provides cycle-by-cycle peak current limit,

over-voltage protection, and a power good signal.

The LM27213 fully supports the Stop CPU and Sleep

modes offered by some processors. When enabled,

the IC enters a power-saving “diode emulator” mode

which helps prolong battery runtime for portable

systems.

•

Low Voltage High Current Buck Regulators

Benefits

•

Single Chip Core Power Solution

Minimum Output Capacitance Required

Low Cost, Compact Design

The LM27213 also has a soft start feature for the

external adjustment of soft start speed.

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...32

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与LM27213_15相关器件

型号	品牌	获取价格	描述	数据表
LM27213MTD	NSC	获取价格	Single Phase Hysteretic Buck Controller
LM27213MTD/NOPB	TI	获取价格	LM27213 Single Phase Hysteretic Buck Controller
LM27213MTDX	NSC	获取价格	Single Phase Hysteretic Buck Controller
LM27213MTDX/NOPB	TI	获取价格	LM27213 Single Phase Hysteretic Buck Controller
LM27213SQ	NSC	获取价格	Single Phase Hysteretic Buck Controller
LM27213SQ/NOPB	TI	获取价格	LM27213 Single Phase Hysteretic Buck Controller
LM27213SQX	NSC	获取价格	Single Phase Hysteretic Buck Controller
LM27213SQX/NOPB	TI	获取价格	LM27213 Single Phase Hysteretic Buck Controller
LM2722	NSC	获取价格	High Speed Synchronous/Asynchronous MOSFET Driver
LM27222	NSC	获取价格	High-Speed 4.5A Synchronous MOSFET Driver

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