ISL6146CFUZ

DATASHEET ISL6146 FN7667 Rev 5.00 Low Voltage OR-ing FET Controller Aug 17, 2015 The ISL6146 represents a family of OR-ing MOSFET controllers Features capable of OR-ing voltages from 1V to 18V. Together with suitably OR-ing down to 1V and up to 20V with ISL6146A, ISL6146B, sized N-channel power MOSFETs, the ISL6146 increases power distribution efficiency when replacing a power OR-ing diode in high ISL6146D and ISL6146E current applications. It provides gate drive voltage for the Programmable voltage compliant operation with ISL6146C MOSFET(s) with a fully integrated charge pump. V hot swap transient protection rating to +24V IN The ISL6146 allows users to adjust with external resistor(s) the High speed comparator provides fast <0.3s turn-off in V - V trip point, which adjusts the control sensitivity to system OUT IN response to shorts on sourcing supply power supply noise. An open drain FAULT pin will indicate if a conditional or FET fault has occurred. Fastest reverse current fault isolation with 6A turn-off The ISL6146A and ISL6146B are optimized for very low voltage current operation, down to 1V with an additional independent bias of 3V Very smooth switching transition or greater. Internal charge pump to drive N-channel MOSFET The ISL6146C provides a voltage compliant mode of operation User programmable V - V Vth for noise immunity down to 3V with programmable undervoltage lock out and IN OUT overvoltage protection threshold levels. Open-drain FAULT output with delay The ISL6146D and ISL6146E are like the ISL6146A and ISL6146B - Short between any two of the OR-ing FET terminals respectively, but do not have conduction state reporting via the - GATE voltage and excessive FET V DS fault output. - Power-good indicator (ISL6146C) TABLE 1. KEY DIFFERENCES BETWEEN PARTS IN FAMILY MSOP and DFN package options PART NUMBER KEY DIFFERENCES Applications ISL6146A Separate BIAS and V with Active High Enable N+1 industrial and telecom power distribution systems IN ISL6146B Separate BIAS and V with Active Low Enable Uninterruptable power supplies IN Low voltage processor and memory ISL6146C V with OVP/UVLO Inputs IN Storage and datacom systems ISL6146D ISL6146A without Conduction Monitor and Reporting ISL6146E ISL6146B without Conduction Monitor and Reporting + C Q1 O + M M O N VIN GATE VOUT P GATE FAST OFF, ~200ns FALL TIME VOLTAGE BIAS ADJ O DC/DC ~70ns FROM 20V TO 12.6V ACROSS 57nF W ISL6146B (3V - 20V) E GATE OUTPUT SINKING ~ 6A FLT R B EN GND U S - + C Q2 O M + M O N VIN GATE VOUT VOUT P VOLTAGE BIAS ADJ O DC/DC W ISL6146B (3V - 20V) E FLT R B EN GND U S - FIGURE 1. TYPICAL APPLICATION FIGURE 2. ISL6146 GATE HIGH CURRENT PULL-DOWN FN7667 Rev 5.00 Page 1 of 28 Aug 17, 2015ISL6146 Table of Contents Block Diagram 3 Pin Configuration 3 Pin Descriptions . 3 Ordering Information 5 Absolute Maximum Ratings . 6 Thermal Information . 6 Recommended Operating Conditions 6 Electrical Specifications . 6 Typical Performance Curves 9 Functional Description 17 Functional Overview . 17 Applications Information 18 Power-up Considerations . 18 Typical Applications Circuits . 18 ISL6146 Evaluation Platforms 21 Description and Use of the Evaluation Boards 21 Revision History 26 About Intersil 26 Package Outline Drawing 27 L8.3x3J 27 M8.118 28 FN7667 Rev 5.00 Page 2 of 28 Aug 17, 2015