DATASHEET ISL8840A, ISL8841A, ISL8842A, ISL8843A, ISL8844A, ISL8845A FN6320 High Performance Industry Standard Single-Ended Current Mode PWM Controller Rev 3.00 April 18, 2007 The ISL884xA is a high performance drop-in replacement for Features the popular 28C4x and 18C4x PWM controllers suitable for a 1A MOSFET gate driver wide range of power conversion applications including boost, flyback, and isolated output configurations. Its fast 90 A start-up current, 125A maximum signal propagation and output switching characteristics 35ns propagation delay current sense to output make this an ideal product for existing and new designs. Fast transient response with peak current mode control Features include 30V operation, low operating current, 90A 30V operation start-up current, adjustable operating frequency to 2MHz, and high peak current drive capability with 20ns rise and fall Adjustable switching frequency to 2MHz times. 20ns rise and fall times with 1nF output load PART NUMBER RISING UVLO MAX. DUTY CYCLE Trimmed timing capacitor discharge current for accurate ISL8840A 7.0 100% deadtime/maximum duty cycle control ISL8841A 7.0 50% 1.5MHz bandwidth error amplifier ISL8842A 14.4V 100% Tight tolerance voltage reference over line, load and temperature ISL8843A 8.4V 100% 3% current limit threshold ISL8844A 14.4V 50% ISL8845A 8.4V 50% Pb-free plus anneal available and ELV, WEEE, RoHS Compliant Pinout Applications ISL8840A, ISL8841A, ISL8842A, ISL8843A, ISL8844A, ISL8845A Telecom and datacom power (8 LD SOIC, MSOP) TOP VIEW Wireless base station power File server power COMP 1 8 VREF Industrial power systems FB 2 7 VDD PC power supplies CS 3 6 OUT Isolated buck and flyback regulators RTCT 4 5 GND Boost regulators FN6320 Rev 3.00 Page 1 of 15 April 18, 2007ISL8840A, ISL8841A, ISL8842A, ISL8843A, ISL8844A, ISL8845A Ordering Information (Continued) Ordering Information PART PART TEMP. PACKAGE PKG. PART PART TEMP. PACKAGE PKG. NUMBER* MARKING RANGE (C) (Pb-free) DWG. NUMBER* MARKING RANGE (C) (Pb-free) DWG. ISL8843AMBZ 8843 AMBZ -55 to +125 8 Ld SOIC M8.15 ISL8840AABZ 8840 AABZ -40 to +105 8 Ld SOIC M8.15 (See Note) (See Note) ISL8843AMUZ 43AMZ -55 to +125 8 Ld MSOP M8.118 ISL8840AAUZ 40AAZ -40 to +105 8 Ld MSOP M8.118 (See Note) (See Note) ISL8844AABZ 8844 AABZ -40 to +105 8 Ld SOIC M8.15 ISL8840AMBZ 8840 AMBZ -55 to +125 8 Ld SOIC M8.15 (See Note) (See Note) ISL8844AAUZ 44AAZ -40 to +105 8 Ld MSOP M8.118 ISL8840AMUZ 40AMZ -55 to +125 8 Ld MSOP M8.118 (See Note) (See Note) ISL8844AMBZ 8844 AMBZ -55 to +125 8 Ld SOIC M8.15 ISL8841AABZ 8841 AABZ -40 to +105 8 Ld SOIC M8.15 (See Note) (See Note) ISL8844AMUZ 44AMZ -55 to +125 8 Ld MSOP M8.118 ISL8841AAUZ 41AAZ -40 to +105 8 Ld MSOP M8.118 (See Note) (See Note) ISL8845AABZ 8845 AABZ -40 to +105 8 Ld SOIC M8.15 ISL8841AMBZ 8841 AMBZ -55 to +125 8 Ld SOIC M8.15 (See Note) (See Note) ISL8845AAUZ 45AAZ -40 to +105 8 Ld MSOP M8.118 ISL8841AMUZ 41AMZ -55 to +125 8 Ld MSOP M8.118 (See Note) (See Note) ISL8845AMBZ 8845 AMBZ -55 to +125 8 Ld SOIC M8.15 ISL8842AABZ 8842 AABZ -40 to +105 8 Ld SOIC M8.15 (See Note) (See Note) ISL8845AMUZ 45AMZ -55 to +125 8 Ld MSOP M8.118 ISL8842AAUZ 42AAZ -40 to +105 8 Ld MSOP M8.118 (See Note) (See Note) *Add -T suffix for tape and reel. ISL8842AMBZ 8842 AMBZ -55 to +125 8 Ld SOIC M8.15 NOTE: Intersil Pb-free plus anneal products employ special Pb-free (See Note) material sets molding compounds/die attach materials and 100% ISL8842AMUZ 42AMZ -55 to +125 8 Ld MSOP M8.118 matte tin plate termination finish, which are RoHS compliant and (See Note) compatible with both SnPb and Pb-free soldering operations. Intersil Pb-free products are MSL classified at Pb-free peak reflow ISL8843AABZ 8843 AABZ -40 to +105 8 Ld SOIC M8.15 temperatures that meet or exceed the Pb-free requirements of (See Note) IPC/JEDEC J STD-020. ISL8843AAUZ 43AAZ -40 to +105 8 Ld MSOP M8.118 (See Note) FN6320 Rev 3.00 Page 2 of 15 April 18, 2007