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
| Attributes | Value |
|---|---|
| Bias Voltage Range (V) | 3 - 20 |
| Transient Voltage Withstanding (V) | 24 |
| Response Time Dead Short | <300 ns |
| Response Time to PS Slow Turn Off | <80 μs |
| Ramp | Voltage |
| Reverse Voltage Threshold | Resistor-Adjustable (40mV to 800mV) |
Application Block Diagrams
| Bedside Monitor Power Supply Reliable power supply design with battery backup and isolated supplies for bedside monitoring systems. | |
| Smart Pet Feeder Smart pet feeders ensure timely meals with portion control, remote monitoring, and advanced scheduling features. | |
| 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
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| Part Number | Status | Samples | Stock | RoHS | Package | Budgetary Price (USD) | Lead Count (#) | Carrier Type | Moisture Sensitivity Level (MSL) | Pkg. Dimensions (mm) | Pb (Lead) Free | Pb Free Category | Temp. Range (°C) | Country of Assembly | Country of Wafer Fabrication |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ISL6146AFUZ-T | Active | Available | Out of Stock | RoHS:EN | MSOP | 1ku | $1.39 | 8# | Reel | 1 | 3.0 x 3.0 x 0.00 | Yes | Pb-Free 100% Matte Tin Plate w/Anneal-e3 | -40 to +125°C | MALAYSIA | TAIWAN |
| ISL6146AFUZ-TK | Active | Available | Out of Stock | RoHS:EN | MSOP | 1ku | $1.39 | 8# | Reel | 1 | 3.0 x 3.0 x 0.00 | Yes | Pb-Free 100% Matte Tin Plate w/Anneal-e3 | -40 to +125°C | MALAYSIA | TAIWAN |
| ISL6146BFRZ-TK | Active | Available | In Stock | RoHS:EN | DFN | 1ku | $1.39 | 8# | Reel | 3 | 3.0 x 3.0 x 0.90 | Yes | Pb-Free 100% Matte Tin Plate w/Anneal-e3 | -40 to +125°C | MALAYSIA | TAIWAN |
| ISL6146AFRZ | Obsolete | N/A | In Stock | RoHS:EN | DFN | 8# | Tube | 3 | 3.0 x 3.0 x 0.90 | Yes | Pb-Free 100% Matte Tin Plate w/Anneal-e3 | -40 to +125°C | |||
| ISL6146AFRZ-T | Obsolete | N/A | Out of Stock | RoHS:EN | DFN | 8# | Reel | 3 | 3.0 x 3.0 x 0.90 | Yes | Pb-Free 100% Matte Tin Plate w/Anneal-e3 | -40 to +125°C | |||
| ISL6146AFRZ-T7A | Obsolete | N/A | Out of Stock | RoHS:EN | DFN | 8# | Reel | 3 | 3.0 x 3.0 x 0.90 | Yes | Pb-Free 100% Matte Tin Plate w/Anneal-e3 | -40 to +125°C | |||
| ISL6146AFRZ-TK | Obsolete | N/A | Out of Stock | RoHS:EN | DFN | 8# | Reel | 3 | 3.0 x 3.0 x 0.90 | Yes | Pb-Free 100% Matte Tin Plate w/Anneal-e3 | -40 to +125°C | |||
| ISL6146AFUZ | Last Time Buy | N/A | In Stock | RoHS:EN | MSOP | 1ku | $1.39 | 8# | Tube | 1 | 3.0 x 3.0 x 0.00 | Yes | Pb-Free 100% Matte Tin Plate w/Anneal-e3 | -40 to +125°C | MALAYSIA | TAIWAN |
| ISL6146AFUZ-T7A | Last Time Buy | N/A | In Stock | RoHS:EN | MSOP | 1ku | $1.61 | 8# | Reel | 1 | 3.0 x 3.0 x 0.00 | Yes | Pb-Free 100% Matte Tin Plate w/Anneal-e3 | -40 to +125°C | MALAYSIA | TAIWAN |
| ISL6146BFRZ | Last Time Buy | N/A | In Stock | RoHS:EN | DFN | 1ku | $1.39 | 8# | Tube | 3 | 3.0 x 3.0 x 0.90 | Yes | Pb-Free 100% Matte Tin Plate w/Anneal-e3 | -40 to +125°C | MALAYSIA | TAIWAN |
| ISL6146BFRZ-T | Last Time Buy | N/A | In Stock | RoHS:EN | DFN | 1ku | $1.39 | 8# | Reel | 3 | 3.0 x 3.0 x 0.90 | Yes | Pb-Free 100% Matte Tin Plate w/Anneal-e3 | -40 to +125°C | MALAYSIA | TAIWAN |
| ISL6146BFRZ-T7A | Last Time Buy | N/A | In Stock | RoHS:EN | DFN | 1ku | $1.61 | 8# | Reel | 3 | 3.0 x 3.0 x 0.90 | Yes | Pb-Free 100% Matte Tin Plate w/Anneal-e3 | -40 to +125°C | MALAYSIA | TAIWAN |
| ISL6146BFUZ | Obsolete | N/A | Out of Stock | RoHS:EN | MSOP | 8# | Tube | 1 | 3.0 x 3.0 x 0.00 | Yes | Pb-Free 100% Matte Tin Plate w/Anneal-e3 | -40 to +125°C | |||
| ISL6146BFUZ-T | Obsolete | N/A | Out of Stock | RoHS:EN | MSOP | 8# | Reel | 1 | 3.0 x 3.0 x 0.00 | Yes | Pb-Free 100% Matte Tin Plate w/Anneal-e3 | -40 to +125°C | |||
| ISL6146BFUZ-T7A | Obsolete | N/A | Out of Stock | RoHS:EN | MSOP | 8# | Reel | 1 | 3.0 x 3.0 x 0.00 | Yes | Pb-Free 100% Matte Tin Plate w/Anneal-e3 | -40 to +125°C | |||
| ISL6146BFUZ-TK | Obsolete | N/A | Out of Stock | RoHS:EN | MSOP | 8# | Reel | 1 | 3.0 x 3.0 x 0.00 | Yes | Pb-Free 100% Matte Tin Plate w/Anneal-e3 | -40 to +125°C | |||
| ISL6146CFRZ | Obsolete | N/A | In Stock | RoHS:EN | DFN | 8# | Tube | 3 | 3.0 x 3.0 x 0.90 | Yes | Pb-Free 100% Matte Tin Plate w/Anneal-e3 | -40 to +125°C | |||
| ISL6146CFRZ-T | Obsolete | N/A | In Stock | RoHS:EN | DFN | 8# | Reel | 3 | 3.0 x 3.0 x 0.90 | Yes | Pb-Free 100% Matte Tin Plate w/Anneal-e3 | -40 to +125°C | |||
| ISL6146CFRZ-T7A | Obsolete | N/A | Out of Stock | RoHS:EN | DFN | 8# | Reel | 3 | 3.0 x 3.0 x 0.90 | Yes | Pb-Free 100% Matte Tin Plate w/Anneal-e3 | -40 to +125°C | |||
| ISL6146CFRZ-TK | Obsolete | N/A | Out of Stock | RoHS:EN | DFN | 8# | Reel | 3 | 3.0 x 3.0 x 0.90 | Yes | Pb-Free 100% Matte Tin Plate w/Anneal-e3 | -40 to +125°C | |||
| ISL6146CFUZ | Last Time Buy | N/A | In Stock | RoHS:EN | MSOP | 1ku | $1.39 | 8# | Tube | 1 | 3.0 x 3.0 x 0.00 | Yes | Pb-Free 100% Matte Tin Plate w/Anneal-e3 | -40 to +125°C | MALAYSIA | TAIWAN |
| ISL6146CFUZ-T | Last Time Buy | N/A | In Stock | RoHS:EN | MSOP | 1ku | $1.39 | 8# | Reel | 1 | 3.0 x 3.0 x 0.00 | Yes | Pb-Free 100% Matte Tin Plate w/Anneal-e3 | -40 to +125°C | MALAYSIA | TAIWAN |
| ISL6146CFUZ-T7A | Obsolete | N/A | In Stock | RoHS:EN | MSOP | 8# | Reel | 1 | 3.0 x 3.0 x 0.00 | Yes | Pb-Free 100% Matte Tin Plate w/Anneal-e3 | -40 to +125°C | |||
| ISL6146CFUZ-TK | Last Time Buy | N/A | Out of Stock | RoHS:EN | MSOP | 1ku | $1.39 | 8# | Reel | 1 | 3.0 x 3.0 x 0.00 | Yes | Pb-Free 100% Matte Tin Plate w/Anneal-e3 | -40 to +125°C | MALAYSIA | TAIWAN |
| ISL6146DFRZ | Obsolete | N/A | In Stock | RoHS:EN | DFN | 8# | Tube | 3 | 3.0 x 3.0 x 0.90 | Yes | Pb-Free 100% Matte Tin Plate w/Anneal-e3 | -40 to +125°C | |||
| ISL6146DFRZ-T | Obsolete | N/A | Out of Stock | RoHS:EN | DFN | 8# | Reel | 3 | 3.0 x 3.0 x 0.90 | Yes | Pb-Free 100% Matte Tin Plate w/Anneal-e3 | -40 to +125°C | |||
| ISL6146DFRZ-T7A | Obsolete | N/A | Out of Stock | RoHS:EN | DFN | 8# | Reel | 3 | 3.0 x 3.0 x 0.90 | Yes | Pb-Free 100% Matte Tin Plate w/Anneal-e3 | -40 to +125°C | |||
| ISL6146DFRZ-TK | Obsolete | N/A | In Stock | RoHS:EN | DFN | 8# | Reel | 3 | 3.0 x 3.0 x 0.90 | Yes | Pb-Free 100% Matte Tin Plate w/Anneal-e3 | -40 to +125°C | |||
| ISL6146DFUZ | Obsolete | N/A | In Stock | RoHS:EN | MSOP | 8# | Tube | 1 | 3.0 x 3.0 x 0.00 | Yes | Pb-Free 100% Matte Tin Plate w/Anneal-e3 | -40 to +125°C | |||
| ISL6146DFUZ-T | Obsolete | N/A | Out of Stock | RoHS:EN | MSOP | 8# | Reel | 1 | 3.0 x 3.0 x 0.00 | Yes | Pb-Free 100% Matte Tin Plate w/Anneal-e3 | -40 to +125°C | |||
| ISL6146DFUZ-T7A | Obsolete | N/A | Out of Stock | RoHS:EN | MSOP | 8# | Reel | 1 | 3.0 x 3.0 x 0.00 | Yes | Pb-Free 100% Matte Tin Plate w/Anneal-e3 | -40 to +125°C | |||
| ISL6146DFUZ-TK | Obsolete | N/A | Out of Stock | RoHS:EN | MSOP | 8# | Reel | 1 | 3.0 x 3.0 x 0.00 | Yes | Pb-Free 100% Matte Tin Plate w/Anneal-e3 | -40 to +125°C | |||
| ISL6146EFRZ | Obsolete | N/A | Out of Stock | RoHS:EN | DFN | 8# | Tube | 3 | 3.0 x 3.0 x 0.90 | Yes | Pb-Free 100% Matte Tin Plate w/Anneal-e3 | -40 to +125°C | |||
| ISL6146EFRZ-T | Obsolete | N/A | Out of Stock | RoHS:EN | DFN | 8# | Reel | 3 | 3.0 x 3.0 x 0.90 | Yes | Pb-Free 100% Matte Tin Plate w/Anneal-e3 | -40 to +125°C | |||
| ISL6146EFRZ-T7A | Obsolete | N/A | Out of Stock | RoHS:EN | DFN | 8# | Reel | 3 | 3.0 x 3.0 x 0.90 | Yes | Pb-Free 100% Matte Tin Plate w/Anneal-e3 | -40 to +125°C | |||
| ISL6146EFRZ-TK | Obsolete | N/A | Out of Stock | RoHS:EN | DFN | 8# | Reel | 3 | 3.0 x 3.0 x 0.90 | Yes | Pb-Free 100% Matte Tin Plate w/Anneal-e3 | -40 to +125°C | |||
| ISL6146EFUZ | Obsolete | N/A | Out of Stock | RoHS:EN | MSOP | 8# | Tube | 1 | 3.0 x 3.0 x 0.00 | Yes | Pb-Free 100% Matte Tin Plate w/Anneal-e3 | -40 to +125°C | |||
| ISL6146EFUZ-T | Obsolete | N/A | In Stock | RoHS:EN | MSOP | 8# | Reel | 1 | 3.0 x 3.0 x 0.00 | Yes | Pb-Free 100% Matte Tin Plate w/Anneal-e3 | -40 to +125°C | |||
| ISL6146EFUZ-T7A | Obsolete | N/A | Out of Stock | RoHS:EN | MSOP | 8# | Reel | 1 | 3.0 x 3.0 x 0.00 | Yes | Pb-Free 100% Matte Tin Plate w/Anneal-e3 | -40 to +125°C | |||
| ISL6146EFUZ-TK | Obsolete | N/A | Out of Stock | RoHS:EN | MSOP | 8# | Reel | 1 | 3.0 x 3.0 x 0.00 | Yes | Pb-Free 100% Matte Tin Plate w/Anneal-e3 | -40 to +125°C |
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- Product Change NoticePDF 326 KB May 21, 2021
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- Application NotePDF 397 KB an1684 Jan 19, 2004AI-generated Summary: The document outlines important legal disclaimers and usage guidelines for semiconductor products. It emphasizes user responsibility for product design and safety, disclaims liability for damages, and clarifies no intellectual property licenses are granted. Products are categorized by quality grades with specific application recommendations. Users must comply with laws, avoid unauthorized modifications, and ensure safe use within specified conditions. Contact details for Renesas Electronics sales offices worldwide are provided.
- Application NotePDF 509 KB an1681 Jan 19, 2004AI-generated Summary: The document explains grounding techniques for PCB layouts using a dual op amp example on a single-layer copper board. It compares three grounding schemes: a center spine ground trace, an outer ground plane, and a split/star ground plane, highlighting the benefits of single-point grounding to minimize noise and antenna effects. It emphasizes following current paths, minimizing loop lengths, and ensuring close forward and return paths to reduce interference. The document also includes disclaimers on product use, quality grades, safety, and legal compliance.
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- Application NotePDF 397 KB an1684 Jan 19, 2004AI-generated Summary: The document outlines important legal disclaimers and usage guidelines for semiconductor products. It emphasizes user responsibility for product design and safety, disclaims liability for damages, and clarifies no intellectual property licenses are granted. Products are categorized by quality grades with specific application recommendations. Users must comply with laws, avoid unauthorized modifications, and ensure safe use within specified conditions. Contact details for Renesas Electronics sales offices worldwide are provided.
- Application NotePDF 509 KB an1681 Jan 19, 2004AI-generated Summary: The document explains grounding techniques for PCB layouts using a dual op amp example on a single-layer copper board. It compares three grounding schemes: a center spine ground trace, an outer ground plane, and a split/star ground plane, highlighting the benefits of single-point grounding to minimize noise and antenna effects. It emphasizes following current paths, minimizing loop lengths, and ensuring close forward and return paths to reduce interference. The document also includes disclaimers on product use, quality grades, safety, and legal compliance.
Application Notes & White Papers (2)
- Product Change NoticePDF 326 KB May 21, 2021
- Product Change NoticePDF 84 KB PCN13005 Jan 23, 2013
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Knowledge Base
-
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.