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ISL6401CR Datasheet(PDF) 1 Page - Intersil Corporation |
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ISL6401CR Datasheet(HTML) 1 Page - Intersil Corporation |
1 / 11 page 1 ® FN9007.7 CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures. 1-888-INTERSIL or 1-888-352-6832 | Intersil (and design) is a registered trademark of Intersil Americas Inc. Copyright © Intersil Americas Inc. 2001-2005. All Rights Reserved All other trademarks mentioned are the property of their respective owners. ISL6401 Synchronizing Current Mode PWM for Subscriber Line Interface Circuits (SLICs) The ISL6401 adjustable frequency, low power, pulse width modulating (PWM) current mode controller is designed for a wide range of DC/DC conversion applications including boost, flyback, and isolated output configurations. The device is optimized to provide a high performance, low-cost solution for Ringing SLIC (RSLIC) ring and talk power supplies. An integrated inverter allows for easy design of negative voltage regulation circuits with a minimal amount of external components. Internal soft-start minimizes start-up stress without any external components. Peak current mode control effectively handles Ring trip transients and provides inherent overcurrent protection. This advanced BiCMOS design features low operating current, adjustable operating output frequency (50kHz to 600kHz), internal soft-start and a SYNC input that allows the oscillator to be locked to an external clock for noise sensitive applications. DC/DC conversion efficiency is optimized by use of a low current sense voltage. A logic level shutdown input is included, which reduces supply current to 55 µA in the shutdown mode. Features • Positive and Negative Output Regulation • Starting Supply Current . . . . . . . . . . . . . . . . . 100 µA (typ.) • Quiescent Current . . . . . . . . . . . . . . . . . . . . . . 55 µA (typ.) • Output Frequency Range. . . . . . . . . . . . 50kHz to 600kHz • External Clock Synchronization • Fast Transient Response with Peak Current Mode Control • Internal Soft-Start • Drives N-Channel MOSFET • Logic Level Shutdown • Leading Edge Blanking • 1% Tolerance Voltage Reference Over Line and Temperature • Pb-Free Available (RoHS Compliant) Applications • VoIP/VoDSL Ringer and Off-Hook Voltage Generators • Multi-Output Flyback Supplies • Cable and DSL Modems • Set-Top Boxes • Wireless Local Loops • LMDH and FTTH Supplies • Boost Regulators •Routers Pinouts ISL6401 (SOIC) TOP VIEW ISL6401 (QFN) TOP VIEW SD SYNC CT COMP FB NFB OUT NFB IN VCC PVCC GATE PGND GND CS NC 1 2 3 4 5 6 7 14 13 12 11 10 9 8 SYNC CT COMP FB PGND PGND GND CS 1 3 4 15 16 14 13 2 12 10 9 11 6 57 8 Ordering Information PART NUMBER TEMP. RANGE (°C) PACKAGE PKG. DWG. # ISL6401CB -40 to 85 14 Ld SOIC M14.15 ISL6401CBZ (Note) -40 to 85 14 Ld SOIC (Pb-free) M14.15 ISL6401CR -40 to 85 16 Ld 4x4 QFN L16.4x4 ISL6401CRZ (Note) -40 to 85 16 Ld 4x4 QFN (Pb-free) L16.4x4 Add -T suffix for tape and reel packaging. NOTES: 1. The parts with suffix ‘C’ are being tested to the industrial temperature grade. This has been updated in the table above. The IB and IR parts are being discontinued. The affected parts are: ISL6401IB, ISL6401IBZ, ISL6401IB-T, ISL6401IBZ-T, ISL6401IR, ISL6401IRZ, ISL6401IR-T, ISL6401IRZ-T. 2. Intersil Pb-free products employ special Pb-free material sets; molding compounds/die attach materials and 100% matte tin plate termination finish, which are RoHS compliant and compatible with both SnPb and Pb- free soldering operations. Intersil Pb-free products are MSL classified at Pb-free peak reflow temperatures that meet or exceed the Pb-free requirements of IPC/JEDEC J STD-020. Data Sheet April 13, 2005 |
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