LM3421

활성

직렬 DIM FET 드라이버를 지원하는 정전류 LED 드라이버용 N채널 컨트롤러

지금 주문하기

데이터 시트

document-pdfAcrobat LM342x N -Channel Controllers for Constant-Current LED Drivers datasheet (Rev. G) (영어) PDF | HTML

이 제품의 최신 버전이 있습니다

open-in-new

대안 비교

비교 대상 장치와 유사한 기능.

TPS92691-Q1

활성

레일 투 레일 전류 감지 증폭기를 갖춘 오토모티브 멀티 토폴로지 LED 드라이버 Multi-topology capabilities with integrated N-channel FET.

LM3421

활성

지금 주문하기

제품 상세 정보

Input voltage type

DC/DC

Topology

Boost, Boost Controller, Buck-Boost, SEPIC

Vin (min) (V)

4.5

Vin (max) (V)

75

Vout (max) (V)

72

Vout (min) (V)

3

Iout (max) (A)

5

Iq (typ) (mA)

2

Features

Adjustable Switch Frequency, Enable/Shutdown, Thermal shutdown

Operating temperature range (°C)

-40 to 125

Dimming method

Analog, PWM

Number of channels

1

Rating

Catalog

Input voltage type

DC/DC

Topology

Boost, Boost Controller, Buck-Boost, SEPIC

Vin (min) (V)

4.5

Vin (max) (V)

75

Vout (max) (V)

72

Vout (min) (V)

3

Iout (max) (A)

5

Iq (typ) (mA)

2

Features

Adjustable Switch Frequency, Enable/Shutdown, Thermal shutdown

Operating temperature range (°C)

-40 to 125

Dimming method

Analog, PWM

Number of channels

1

Rating

Catalog

HTSSOP (PWP)

16

32 mm² (5 mm × 6.4 mm)

V_IN Range From 4.5 V to 75 V
High-Side Adjustable Current Sense
2-Ω, 1-A Peak MOSFET Gate Driver
Input Undervoltage and Output Overvoltage Protection
PWM and Analog Dimming
Cycle-by-Cycle Current Limit
Programmable Switching Frequency
Zero Current Shutdown and Thermal Shutdown
LED Output Status Flag (LM3423 and LM3423-Q0 Only)
Fault Status Flag and Timer(LM3423 and LM3423-Q0 Only)

V_IN Range From 4.5 V to 75 V
High-Side Adjustable Current Sense
2-Ω, 1-A Peak MOSFET Gate Driver
Input Undervoltage and Output Overvoltage Protection
PWM and Analog Dimming
Cycle-by-Cycle Current Limit
Programmable Switching Frequency
Zero Current Shutdown and Thermal Shutdown
LED Output Status Flag (LM3423 and LM3423-Q0 Only)
Fault Status Flag and Timer(LM3423 and LM3423-Q0 Only)

The LM3421 and LM3423 family of devices are versatile high voltage N-channel MOSFET controllers for LED drivers. They can be easily configured in buck, boost, buck-boost and SEPIC topologies. This flexibility, along with an input voltage rating of 75 V, makes the these controllers ideal for illuminating LEDs in a large family of applications.

Adjustable high-side current sense voltage allows for tight regulation of the LED current with the highest efficiency possible. The LM3421 and LM3423 devices use predictive off-time (PRO) control, which is a combination of peak current-mode control and a predictive off-timer. This method of control eases the design of loop compensation while providing inherent input voltage feed-forward compensation.

The LM3421 and LM3423 devices include a high-voltage start-up regulator that operates over a wide input range of 4.5 V to 75 V. The internal PWM controller is designed for adjustable switching frequencies of up to 2 MHz, thus enabling compact solutions.

The LM3421 and LM3423 family of devices are versatile high voltage N-channel MOSFET controllers for LED drivers. They can be easily configured in buck, boost, buck-boost and SEPIC topologies. This flexibility, along with an input voltage rating of 75 V, makes the these controllers ideal for illuminating LEDs in a large family of applications.

Adjustable high-side current sense voltage allows for tight regulation of the LED current with the highest efficiency possible. The LM3421 and LM3423 devices use predictive off-time (PRO) control, which is a combination of peak current-mode control and a predictive off-timer. This method of control eases the design of loop compensation while providing inherent input voltage feed-forward compensation.

The LM3421 and LM3423 devices include a high-voltage start-up regulator that operates over a wide input range of 4.5 V to 75 V. The internal PWM controller is designed for adjustable switching frequencies of up to 2 MHz, thus enabling compact solutions.

filter

기타 조명 LED 드라이버 찾기

다운로드 스크립트와 함께 비디오 보기 비디오

관심 가지실만한 유사 제품

open-in-new

대안 비교

다른 핀 출력을 지원하지만 비교 대상 장치와 동일한 기능.

TPS92691

활성

TPS92691 레일-투-레일 전류 감지 증폭기와 멀티 토폴로지 LED 드라이버 This product is a multi-topology low-side NFET LED controller with rail-to-rail current sense capability.

기술 자료

검색된 결과가 없습니다. 검색어를 지우고 다시 시도하세요.

5개 모두 보기

상위 문서	유형	직함	형식 옵션
*	데이터 시트	LM342x N -Channel Controllers for Constant-Current LED Drivers datasheet (Rev. G)	PDF \| HTML	2019. 7. 30
	선택 가이드	Power Management Guide 2018 (Rev. R)		2018. 6. 25
	기술 문서	Driving LEDs: topology matters	PDF \| HTML	2016. 2. 26
	애플리케이션 노트	AN-1656 Design Challenges of Switching LED Drivers (Rev. A)		2013. 5. 3
	애플리케이션 노트	AN-1982 Small, Wide Input Voltage Range LM2842 Keeps LEDs Cool (Rev. A)		2013. 4. 23