LM3485-Q1

Name: LM3485-Q1
Brand: TI
SKU: LM3485-Q1
Price: 0.602 USD

활성

오토모티브 등급 4.5~35V, 히스테리시스 비동기 PFET 벅 컨트롤러

지금 주문

데이터 시트

document-pdfAcrobat LM3485 Hysteretic PFET Buck Controller datasheet (Rev. H) (영어) PDF | HTML

이 제품의 최신 버전이 있습니다

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대안 비교

다른 핀 출력을 지원하지만 비교 대상 장치와 동일한 기능

LM25141-Q1

활성

주파수 확산 스펙트럼을 지원하는 차량용 2.2MHz, 저 IQ 동기 벅 컨트롤러 Improved EMI performance, efficiency and lower IQ.

LM3485-Q1

활성

데이터 시트

지금 주문

제품 상세 정보

Vin (min) (V)

4.5

Vin (max) (V)

35

Iout (max) (A)

4

Operating temperature range (°C)

-40 to 125

Control mode

Hysteretic

Topology

Buck Controller

Rating

Automotive

Vout (min) (V)

1.242

Vout (max) (V)

35

Features

Enable

Iq (typ) (µA)

250

Duty cycle (max) (%)

100

Number of phases

1

Vin (min) (V)

4.5

Vin (max) (V)

35

Iout (max) (A)

4

Operating temperature range (°C)

-40 to 125

Control mode

Hysteretic

Topology

Buck Controller

Rating

Automotive

Vout (min) (V)

1.242

Vout (max) (V)

35

Features

Enable

Iq (typ) (µA)

250

Duty cycle (max) (%)

100

Number of phases

1

VSSOP (DGK)

8

14.7 mm² 3 x 4.9

Easy-to-Use Control Methodology
No Control-Loop Compensation Required
4.5-V to 35-V Wide Input Range
1.242-V to V_IN Adjustable Output Range
High Efficiency 93%
±1.3% (±2% Over Temp) Internal Reference
100% Duty Cycle
Maximum Operating Frequency > 1 MHz
Current Limit Protection

Easy-to-Use Control Methodology
No Control-Loop Compensation Required
4.5-V to 35-V Wide Input Range
1.242-V to V_IN Adjustable Output Range
High Efficiency 93%
±1.3% (±2% Over Temp) Internal Reference
100% Duty Cycle
Maximum Operating Frequency > 1 MHz
Current Limit Protection

The LM3485 is a high-efficiency PFET switching regulator controller that can be used to quickly and easily develop a small, low-cost, switching buck regulator for a wide range of applications. The hysteretic control architecture provides for simple design without any control-loop stability concerns using a wide variety of external components. The PFET architecture also allows for low component count as well as ultralow dropout, 100% duty cycle operation. Another benefit is high efficiency operation at light loads without an increase in output ripple.

Current limit protection is provided by measuring the voltage across the R_DS(ON) of the PFET, thus eliminating the need for a sense resistor. The cycle-by-cycle current limit can be adjusted with a single resistor, ensuring safe operation over a range of output currents.

The LM3485 is a high-efficiency PFET switching regulator controller that can be used to quickly and easily develop a small, low-cost, switching buck regulator for a wide range of applications. The hysteretic control architecture provides for simple design without any control-loop stability concerns using a wide variety of external components. The PFET architecture also allows for low component count as well as ultralow dropout, 100% duty cycle operation. Another benefit is high efficiency operation at light loads without an increase in output ripple.

Current limit protection is provided by measuring the voltage across the R_DS(ON) of the PFET, thus eliminating the need for a sense resistor. The cycle-by-cycle current limit can be adjusted with a single resistor, ensuring safe operation over a range of output currents.

filter

기타 AC/DC 및 DC/DC 컨트롤러(외장 FET) 찾기

다운로드 스크립트와 함께 비디오 보기 동영상

기술 자료

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=TI에서 선정한 이 제품의 인기 문서

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3개 모두 보기

	유형	직함		날짜
*	Data sheet	LM3485 Hysteretic PFET Buck Controller datasheet (Rev. H)	PDF \| HTML	2015/12/28
	EVM User's guide	AN-1227 LM3485 Evaluation Board (Rev. B)		2013/04/25
	EVM User's guide	AN-1392 LM3485 LED Demo Board (Rev. B)		2013/04/25

설계 및 개발

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평가 보드

LM3485EVAL — 히스테리시스 PFET 벅 컨트롤러 평가 모듈

Hysteretic PFET Buck Controller

사용 설명서: PDF

TI.com에서 구매 불가

평가 보드

LM3485LED-EVAL — 히스테리시스 PFET 벅 컨트롤러

The LM3485 LED driver board is a buck regulator derived controlled current source designed to drive high power, high brightness LEDs (HBLEDs) such as the Luxeon™ Emitter at dissipations of 1W to 5W. The board can accept an input voltage ranging from 5V to 30V and can control the output current (...)

사용 설명서: PDF