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DRV81545

활성

독립 과열 및 과전류 보호 기능을 갖춘 55V, 2A 4채널 저압측 드라이버

지금 주문하기

데이터 시트

document-pdfAcrobat DRV81545 : 55V Four-Channel Low-side Driver With Integrated Protection Features datasheet (Rev. A) (영어) PDF | HTML

DRV81545

활성

데이터 시트

지금 주문하기

제품 상세 정보

Control interface

Hardware (GPIO)

Control mode

PWM

Vs (max) (V)

55

Vs (min) (V)

4.5

Vs ABS (max) (V)

60

Peak output current (A)

2

Operating temperature range (°C)

-40 to 125

Rating

Catalog

Topology

LSS

Control interface

Hardware (GPIO)

Control mode

PWM

Vs (max) (V)

55

Vs (min) (V)

4.5

Vs ABS (max) (V)

60

Peak output current (A)

2

Operating temperature range (°C)

-40 to 125

Rating

Catalog

Topology

LSS

HTSSOP (PWP)

20

41.6 mm² (6.5 mm × 6.4 mm)

Four-channel integrated low-side switches
- 235mΩ RDS(ON) at 25°C
- Output stage 55V operating maximum (60V absolute maximum)
- Low minimum operating supply voltage range with stable RDS(ON) across voltage: 4.5V
- Selectable current limit from 0.5A up to 3A per channel
- Integrated catch diodes for flexible decay (external TVS/Zener) as an alternate current path on switch turn-off
Hardware INx interface for fast switching up to 250kHz
Diagnostic feedback
- MCU fault interrupt signal (nFAULT)
Thermally enhanced surface mount package (PWP20)
Protection features
- User settable current limit
- Independent overtemperature, overcurrent protection for each switch
- Configurable over-current cut-off delay (COD)

Four-channel integrated low-side switches
- 235mΩ RDS(ON) at 25°C
- Output stage 55V operating maximum (60V absolute maximum)
- Low minimum operating supply voltage range with stable RDS(ON) across voltage: 4.5V
- Selectable current limit from 0.5A up to 3A per channel
- Integrated catch diodes for flexible decay (external TVS/Zener) as an alternate current path on switch turn-off
Hardware INx interface for fast switching up to 250kHz
Diagnostic feedback
- MCU fault interrupt signal (nFAULT)
Thermally enhanced surface mount package (PWP20)
Protection features
- User settable current limit
- Independent overtemperature, overcurrent protection for each switch
- Configurable over-current cut-off delay (COD)

The DRV81545 is a four-channel low-side switch driver that operates from 4.5V to 55V and supports a wide range of load currents. The device integrates four low-side switches with a RDS(ON) of 235mΩ, each with a freewheeling diode to the VCLAMP pin. This feature allows the user to either recirculate current or connect an external TVS for inductive load turn-off.

The device can be controlled through a hardware GPIO interface. Each channel features individual overtemperature protection, and an analog current limit adjustable with an external resistor on the ILIM pin. There is an optional cut-off delay (COD) configuration which limits the duration of a current-limiting condition on the respective channel, helping to prevent damage to the device or the load. Faults are indicated on a fault output pin (nFAULT).

The DRV81545 is a four-channel low-side switch driver that operates from 4.5V to 55V and supports a wide range of load currents. The device integrates four low-side switches with a RDS(ON) of 235mΩ, each with a freewheeling diode to the VCLAMP pin. This feature allows the user to either recirculate current or connect an external TVS for inductive load turn-off.

The device can be controlled through a hardware GPIO interface. Each channel features individual overtemperature protection, and an analog current limit adjustable with an external resistor on the ILIM pin. There is an optional cut-off delay (COD) configuration which limits the duration of a current-limiting condition on the respective channel, helping to prevent damage to the device or the load. Faults are indicated on a fault output pin (nFAULT).

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2개 모두 보기

상위 문서	유형	직함	형식 옵션	최신 영어 버전 다운로드	날짜
*	데이터 시트	DRV81545 : 55V Four-Channel Low-side Driver With Integrated Protection Features datasheet (Rev. A)	PDF \| HTML		2025. 12. 9
	인증서	DRV81545EVM EU Declaration of Conformity (DoC)			2025. 9. 26

설계 및 개발

추가 조건 또는 필수 리소스는 사용 가능한 경우 아래 제목을 클릭하여 세부 정보 페이지를 확인하세요.

평가 보드

DRV81545EVM — DRV81545 평가 모듈

DRV81x4x EVM(평가 모듈)은 DRV81545, DRV81646, DRV81646DGQ 장치를 평가할 수 있도록 설계되었습니다. 이 EVM은 별도 설정 없이 바로 사용하도록 프로그래밍되어 있으며, 즉시 부하를 구동할 수 있습니다. 제어 및 구성을 간소화하기 위해 EVM과 함께 GUI(그래픽 사용자 인터페이스) 애플리케이션이 제공됩니다.

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