LM74501-Q1

활성

VDS 클램프가 통합된 차량용 3.2V~65V 역방향 극성 보호 컨트롤러

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document-pdfAcrobat LM74501-Q1 TVS Less Automotive Reverse Battery Protection Controller datasheet (Rev. A) (영어) PDF | HTML

LM74501-Q1

활성

지금 주문하기

제품 상세 정보

Vin (max) (V)

65

Vin (min) (V)

3.2

FET

External single FET

Device type

Reverse polarity protector

Number of channels

1

Rating

Automotive

Features

Automotive load dump compatibility, Enable, Integrated VDS clamp, Reverse polarity protection

Imax (A)

250

Iq (typ) (mA)

0.08

Iq (max) (mA)

0.13

TI functional safety category

Functional Safety-Capable

IGate source (typ) (µA)

11000

IGate pulsed (typ) (A)

2.3

Operating temperature range (°C)

-40 to 125

Shutdown current (ISD) (mA) (A)

0.001

Product type

Reverse polarity protector

Vin (max) (V)

65

Vin (min) (V)

3.2

FET

External single FET

Device type

Reverse polarity protector

Number of channels

1

Rating

Automotive

Features

Automotive load dump compatibility, Enable, Integrated VDS clamp, Reverse polarity protection

Imax (A)

250

Iq (typ) (mA)

0.08

Iq (max) (mA)

0.13

TI functional safety category

Functional Safety-Capable

IGate source (typ) (µA)

11000

IGate pulsed (typ) (A)

2.3

Operating temperature range (°C)

-40 to 125

Shutdown current (ISD) (mA) (A)

0.001

Product type

Reverse polarity protector

SOT-23-THN (DDF)

8

8.12 mm² (2.9 mm × 2.8 mm)

AEC-Q100 qualified with the following results
- Device temperature grade 1: –40°C to +125°C ambient operating temperature range
- Device HBM ESD classification level 2
- Device CDM ESD classification level C4B
3.2-V to 65-V input range (3.9-V start-up)
–18-V reverse voltage rating
Charge pump for external N-channel MOSFET
Gate discharge timer: meets automotive ISO7637-2 pulse 1 transient without additional TVS diode (TVS less)
1-µA shutdown current (EN = low)
80-µA typical operating quiescent current (EN = high)
20-V VDS clamp (EN = low)
Integrated battery voltage monitoring switch (SW)
8-pin SOT-23 package 2.90 mm × 1.60 mm

AEC-Q100 qualified with the following results
- Device temperature grade 1: –40°C to +125°C ambient operating temperature range
- Device HBM ESD classification level 2
- Device CDM ESD classification level C4B
3.2-V to 65-V input range (3.9-V start-up)
–18-V reverse voltage rating
Charge pump for external N-channel MOSFET
Gate discharge timer: meets automotive ISO7637-2 pulse 1 transient without additional TVS diode (TVS less)
1-µA shutdown current (EN = low)
80-µA typical operating quiescent current (EN = high)
20-V VDS clamp (EN = low)
Integrated battery voltage monitoring switch (SW)
8-pin SOT-23 package 2.90 mm × 1.60 mm

The LM74501-Q1 operates in conjunction with an external N-channel MOSFET as a low loss reverse polarity protection solution. The device supports wide supply input range of 3.2 V to 65 V. The 3.2-V input voltage support is particularly well suited for severe cold crank requirements in automotive systems. The device can withstand and protect the loads from negative supply voltages down to –18 V. The LM74501-Q1 does not have reverse current blocking functionality and is suitable for input reverse polarity protection of loads that can potentially deliver energy back to the input supply such as automotive body control module motor loads.

The LM74501-Q1 controller provides a charge pump gate drive for an external N-channel MOSFET. The LM74501-Q1 has a unique integrated feature that allows systems to meet automotive ISO7637 pulse 1 transient requirements without an additional TVS Diode (TVS less). The LM74501-Q1 features an integrated switch to enable battery voltage monitoring with an external resistor divider. With the enable pin low, the controller is off and draws only around 1 µA of current, thus offering low system current when put into sleep mode.

The LM74501-Q1 operates in conjunction with an external N-channel MOSFET as a low loss reverse polarity protection solution. The device supports wide supply input range of 3.2 V to 65 V. The 3.2-V input voltage support is particularly well suited for severe cold crank requirements in automotive systems. The device can withstand and protect the loads from negative supply voltages down to –18 V. The LM74501-Q1 does not have reverse current blocking functionality and is suitable for input reverse polarity protection of loads that can potentially deliver energy back to the input supply such as automotive body control module motor loads.

The LM74501-Q1 controller provides a charge pump gate drive for an external N-channel MOSFET. The LM74501-Q1 has a unique integrated feature that allows systems to meet automotive ISO7637 pulse 1 transient requirements without an additional TVS Diode (TVS less). The LM74501-Q1 features an integrated switch to enable battery voltage monitoring with an external resistor divider. With the enable pin low, the controller is off and draws only around 1 µA of current, thus offering low system current when put into sleep mode.

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상위 문서	유형	직함	형식 옵션	최신 영어 버전 다운로드		날짜
*	데이터 시트	LM74501-Q1 TVS Less Automotive Reverse Battery Protection Controller datasheet (Rev. A)	PDF \| HTML		2022. 2. 7

설계 및 개발

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평가 보드

LM74501Q1EVM — VDS 클램프가 통합된 역방향 전극 보호 컨트롤러를 위한 LM74501-Q1 평가 모듈

LM74501-Q1 평가 모듈(LM74501Q1EVM)은 설계자들이 LM74501-Q1 역방향 전극 보호 컨트롤러의 작동과 성능을 평가하도록 지원합니다. 이 평가 모듈은 N채널 전력 MOSFET을 사용하여 낮은 IQ LM74501-Q1 컨트롤러로 입력 역전압 보호를 실현하는 방법을 보여줍니다.

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