Skip to main content
Renesas Electronics Corporation - June is Pride Month, a month to raise awareness of the rights and the culture of the LGBTQ+ community

Features

  • OR-ing down to 1V and up to 20V with ISL6146A, ISL6146B, ISL6146D and ISL6146E
  • Programmable voltage compliant operation with ISL6146C
  • VIN hot swap transient protection rating to +24V
  • High speed comparator provides fast <0.3µs turn-off in response to shorts on sourcing supply
  • Fastest reverse current fault isolation with 6A turn-off current
  • Very smooth switching transition
  • Internal charge pump to drive N-channel MOSFET
  • User programmable VIN - VOUT Vth for noise immunity
  • Open-drain FAULT output with delay - Short between any two of the OR-ing FET terminals
  • GATE voltage and excessive FET VDS
  • Power-good indicator (ISL6146C)
  • MSOP and DFN package options

Description

The ISL6146 represents a family of OR-ing MOSFET controllers capable of OR-ing voltages from 1V to 18V. Together with suitably sized N-channel power MOSFETs, the ISL6146 increases power distribution efficiency when replacing a power OR-ing diode in high current applications. It provides gate drive voltage for the MOSFET(s) with a fully integrated charge pump. The ISL6146 allows users to adjust with external resistor(s) the VOUT - VIN trip point, which adjusts the control sensitivity to system power supply noise. An open drain FAULT pin will indicate if a conditional or FET fault has occurred. The ISL6146A and ISL6146B are optimized for very low voltage operation, down to 1V with an additional independent bias of 3V or greater. The ISL6146C provides a voltage compliant mode of operation down to 3V with programmable undervoltage lock out and overvoltage protection threshold levels. The ISL6146D and ISL6146E are like the ISL6146A and ISL6146B respectively, but do not have conduction state reporting via the fault output.

Parameters

AttributesValue
Bias Voltage Range (V)3 - 20
Transient Voltage Withstanding (V)24
Response Time Dead Short&lt;300 ns
Response Time to PS Slow Turn Off&lt;80 μs
RampVoltage
Reverse Voltage ThresholdResistor-Adjustable (40mV to 800mV)

Package Options

Pkg. TypePkg. Dimensions (mm)Lead Count (#)Pitch (mm)
DFN3.0 x 3.0 x 0.9080.7
MSOP3.0 x 3.0 x 0.0080.7

Application Block Diagrams

Power supply system block diagram featuring high-performance GaN FET and MOSFET devices and isolated supplies.
Bedside Monitor Power Supply
Reliable power supply design with battery backup and isolated supplies for bedside monitoring systems.
Smart Pet Feeder Block Diagram
Smart Pet Feeder
Smart pet feeders ensure timely meals with portion control, remote monitoring, and advanced scheduling features.
Mobile Point of Sale (mPoS) Terminal Block Diagram
Mobile Point of Sale (mPoS) Terminal
Mobile PoS with secure, wireless, multi-payment support for seamless transactions anywhere.

Additional Applications

  • N+1 Industrial and Telecom Power Distribution Systems
  • Uninterruptable Power Supplies
  • Low Voltage Processor and Memory
  • Storage and Datacom Systems

Complete Your Design

Explore complementary products to elevate your design

Part NumberStatusSamplesStockRoHSPackageBudgetary Price (USD)Lead Count (#)Carrier TypeMoisture Sensitivity Level (MSL)Pkg. Dimensions (mm)Pb (Lead) FreePb Free CategoryTemp. Range (°C)Country of AssemblyCountry of Wafer Fabrication
ISL6146AFUZ-TActiveAvailableOut of StockRoHS:EN
MSOP1ku | $1.398#Reel13.0 x 3.0 x 0.00YesPb-Free 100% Matte Tin Plate w/Anneal-e3-40 to +125°CMALAYSIATAIWAN
ISL6146AFUZ-TKActiveAvailableOut of StockRoHS:EN
MSOP1ku | $1.398#Reel13.0 x 3.0 x 0.00YesPb-Free 100% Matte Tin Plate w/Anneal-e3-40 to +125°CMALAYSIATAIWAN
ISL6146BFRZ-TKActiveAvailableIn StockRoHS:EN
DFN1ku | $1.398#Reel33.0 x 3.0 x 0.90YesPb-Free 100% Matte Tin Plate w/Anneal-e3-40 to +125°CMALAYSIATAIWAN
ISL6146AFRZObsoleteN/AIn StockRoHS:EN
DFN8#Tube33.0 x 3.0 x 0.90YesPb-Free 100% Matte Tin Plate w/Anneal-e3-40 to +125°C
ISL6146AFRZ-TObsoleteN/AOut of StockRoHS:EN
DFN8#Reel33.0 x 3.0 x 0.90YesPb-Free 100% Matte Tin Plate w/Anneal-e3-40 to +125°C
ISL6146AFRZ-T7AObsoleteN/AOut of StockRoHS:EN
DFN8#Reel33.0 x 3.0 x 0.90YesPb-Free 100% Matte Tin Plate w/Anneal-e3-40 to +125°C
ISL6146AFRZ-TKObsoleteN/AOut of StockRoHS:EN
DFN8#Reel33.0 x 3.0 x 0.90YesPb-Free 100% Matte Tin Plate w/Anneal-e3-40 to +125°C
ISL6146AFUZLast Time BuyN/AIn StockRoHS:EN
MSOP1ku | $1.398#Tube13.0 x 3.0 x 0.00YesPb-Free 100% Matte Tin Plate w/Anneal-e3-40 to +125°CMALAYSIATAIWAN
ISL6146AFUZ-T7ALast Time BuyN/AIn StockRoHS:EN
MSOP1ku | $1.618#Reel13.0 x 3.0 x 0.00YesPb-Free 100% Matte Tin Plate w/Anneal-e3-40 to +125°CMALAYSIATAIWAN
ISL6146BFRZLast Time BuyN/AIn StockRoHS:EN
DFN1ku | $1.398#Tube33.0 x 3.0 x 0.90YesPb-Free 100% Matte Tin Plate w/Anneal-e3-40 to +125°CMALAYSIATAIWAN
ISL6146BFRZ-TLast Time BuyN/AIn StockRoHS:EN
DFN1ku | $1.398#Reel33.0 x 3.0 x 0.90YesPb-Free 100% Matte Tin Plate w/Anneal-e3-40 to +125°CMALAYSIATAIWAN
ISL6146BFRZ-T7ALast Time BuyN/AIn StockRoHS:EN
DFN1ku | $1.618#Reel33.0 x 3.0 x 0.90YesPb-Free 100% Matte Tin Plate w/Anneal-e3-40 to +125°CMALAYSIATAIWAN
ISL6146BFUZObsoleteN/AOut of StockRoHS:EN
MSOP8#Tube13.0 x 3.0 x 0.00YesPb-Free 100% Matte Tin Plate w/Anneal-e3-40 to +125°C
ISL6146BFUZ-TObsoleteN/AOut of StockRoHS:EN
MSOP8#Reel13.0 x 3.0 x 0.00YesPb-Free 100% Matte Tin Plate w/Anneal-e3-40 to +125°C
ISL6146BFUZ-T7AObsoleteN/AOut of StockRoHS:EN
MSOP8#Reel13.0 x 3.0 x 0.00YesPb-Free 100% Matte Tin Plate w/Anneal-e3-40 to +125°C
ISL6146BFUZ-TKObsoleteN/AOut of StockRoHS:EN
MSOP8#Reel13.0 x 3.0 x 0.00YesPb-Free 100% Matte Tin Plate w/Anneal-e3-40 to +125°C
ISL6146CFRZObsoleteN/AIn StockRoHS:EN
DFN8#Tube33.0 x 3.0 x 0.90YesPb-Free 100% Matte Tin Plate w/Anneal-e3-40 to +125°C
ISL6146CFRZ-TObsoleteN/AIn StockRoHS:EN
DFN8#Reel33.0 x 3.0 x 0.90YesPb-Free 100% Matte Tin Plate w/Anneal-e3-40 to +125°C
ISL6146CFRZ-T7AObsoleteN/AOut of StockRoHS:EN
DFN8#Reel33.0 x 3.0 x 0.90YesPb-Free 100% Matte Tin Plate w/Anneal-e3-40 to +125°C
ISL6146CFRZ-TKObsoleteN/AOut of StockRoHS:EN
DFN8#Reel33.0 x 3.0 x 0.90YesPb-Free 100% Matte Tin Plate w/Anneal-e3-40 to +125°C
ISL6146CFUZLast Time BuyN/AIn StockRoHS:EN
MSOP1ku | $1.398#Tube13.0 x 3.0 x 0.00YesPb-Free 100% Matte Tin Plate w/Anneal-e3-40 to +125°CMALAYSIATAIWAN
ISL6146CFUZ-TLast Time BuyN/AIn StockRoHS:EN
MSOP1ku | $1.398#Reel13.0 x 3.0 x 0.00YesPb-Free 100% Matte Tin Plate w/Anneal-e3-40 to +125°CMALAYSIATAIWAN
ISL6146CFUZ-T7AObsoleteN/AIn StockRoHS:EN
MSOP8#Reel13.0 x 3.0 x 0.00YesPb-Free 100% Matte Tin Plate w/Anneal-e3-40 to +125°C
ISL6146CFUZ-TKLast Time BuyN/AOut of StockRoHS:EN
MSOP1ku | $1.398#Reel13.0 x 3.0 x 0.00YesPb-Free 100% Matte Tin Plate w/Anneal-e3-40 to +125°CMALAYSIATAIWAN
ISL6146DFRZObsoleteN/AIn StockRoHS:EN
DFN8#Tube33.0 x 3.0 x 0.90YesPb-Free 100% Matte Tin Plate w/Anneal-e3-40 to +125°C
ISL6146DFRZ-TObsoleteN/AOut of StockRoHS:EN
DFN8#Reel33.0 x 3.0 x 0.90YesPb-Free 100% Matte Tin Plate w/Anneal-e3-40 to +125°C
ISL6146DFRZ-T7AObsoleteN/AOut of StockRoHS:EN
DFN8#Reel33.0 x 3.0 x 0.90YesPb-Free 100% Matte Tin Plate w/Anneal-e3-40 to +125°C
ISL6146DFRZ-TKObsoleteN/AIn StockRoHS:EN
DFN8#Reel33.0 x 3.0 x 0.90YesPb-Free 100% Matte Tin Plate w/Anneal-e3-40 to +125°C
ISL6146DFUZObsoleteN/AIn StockRoHS:EN
MSOP8#Tube13.0 x 3.0 x 0.00YesPb-Free 100% Matte Tin Plate w/Anneal-e3-40 to +125°C
ISL6146DFUZ-TObsoleteN/AOut of StockRoHS:EN
MSOP8#Reel13.0 x 3.0 x 0.00YesPb-Free 100% Matte Tin Plate w/Anneal-e3-40 to +125°C
ISL6146DFUZ-T7AObsoleteN/AOut of StockRoHS:EN
MSOP8#Reel13.0 x 3.0 x 0.00YesPb-Free 100% Matte Tin Plate w/Anneal-e3-40 to +125°C
ISL6146DFUZ-TKObsoleteN/AOut of StockRoHS:EN
MSOP8#Reel13.0 x 3.0 x 0.00YesPb-Free 100% Matte Tin Plate w/Anneal-e3-40 to +125°C
ISL6146EFRZObsoleteN/AOut of StockRoHS:EN
DFN8#Tube33.0 x 3.0 x 0.90YesPb-Free 100% Matte Tin Plate w/Anneal-e3-40 to +125°C
ISL6146EFRZ-TObsoleteN/AOut of StockRoHS:EN
DFN8#Reel33.0 x 3.0 x 0.90YesPb-Free 100% Matte Tin Plate w/Anneal-e3-40 to +125°C
ISL6146EFRZ-T7AObsoleteN/AOut of StockRoHS:EN
DFN8#Reel33.0 x 3.0 x 0.90YesPb-Free 100% Matte Tin Plate w/Anneal-e3-40 to +125°C
ISL6146EFRZ-TKObsoleteN/AOut of StockRoHS:EN
DFN8#Reel33.0 x 3.0 x 0.90YesPb-Free 100% Matte Tin Plate w/Anneal-e3-40 to +125°C
ISL6146EFUZObsoleteN/AOut of StockRoHS:EN
MSOP8#Tube13.0 x 3.0 x 0.00YesPb-Free 100% Matte Tin Plate w/Anneal-e3-40 to +125°C
ISL6146EFUZ-TObsoleteN/AIn StockRoHS:EN
MSOP8#Reel13.0 x 3.0 x 0.00YesPb-Free 100% Matte Tin Plate w/Anneal-e3-40 to +125°C
ISL6146EFUZ-T7AObsoleteN/AOut of StockRoHS:EN
MSOP8#Reel13.0 x 3.0 x 0.00YesPb-Free 100% Matte Tin Plate w/Anneal-e3-40 to +125°C
ISL6146EFUZ-TKObsoleteN/AOut of StockRoHS:EN
MSOP8#Reel13.0 x 3.0 x 0.00YesPb-Free 100% Matte Tin Plate w/Anneal-e3-40 to +125°C

Complete Your Design

Explore complementary products to elevate your design

Knowledge Base

  1. When selecting a MOSFET to use with the ISL6146, what specifications should I look at?

    Question:When selecting a suitable MOSFET to use with the ISL6146, what specifications should I look at?   Answer:The MOSFET should have approximately a Ron = 28mOhm @ VGS = 10V and be able to meet your load current requirement.

Support Communities

Support Communities

Get quick technical support online from Renesas Engineering Community technical staff.
Browse Articles

Knowledge Base

Browse our knowledge base for helpful articles, FAQs, and other useful resources.
Submit a Ticket

Submit a Ticket

Need to ask a technical question or share confidential information?