Datasheet Intersil ISL8840AABZ — Datenblatt

DATASHEET
ISL8840A, ISL8841A, ISL8842A, ISL8843A, ISL8844A, ISL8845A FN6320
Rev 3.00
April 18, 2007 High Performance Industry Standard Single-Ended Current Mode PWM Controller The ISL884xA is a high performance drop-in replacement for
the popular 28C4x and 18C4x PWM controllers suitable for a
wide range of power conversion applications including
boost, flyback, and isolated output configurations. Its fast
signal propagation and output switching characteristics
make this an ideal product for existing and new designs.
Features include 30V operation, low operating current, 90пЃ­A
start-up current, adjustable operating frequency to 2MHz,
and high peak current drive capability with 20ns rise and fall
times. Features 1A MOSFET gate driver 90пЃ­A start-up current, 125пЃ­A maximum 35ns propagation delay current sense to output Fast transient response with peak current mode control 30V operation Adjustable switching frequency to 2MHz 20ns rise and fall times with 1nF output load PART NUMBER RISING UVLO MAX. DUTY CYCLE ISL8840A 7.0 100% Trimmed timing capacitor discharge current for accurate
deadtime/maximum duty cycle control ISL8841A 7.0 50% 1.5MHz bandwidth error amplifier ISL8842A 14.4V 100% ISL8843A 8.4V 100% Tight tolerance voltage reference over line, load and
temperature ISL8844A 14.4V 50% В±3% current limit threshold ISL8845A 8.4V 50% Pb-free plus anneal available and ELV, WEEE, RoHS
Compliant Pinout Applications ISL8840A, ISL8841A, ISL8842A, ISL8843A, ISL8844A, ISL8845A
(8 LD SOIC, MSOP)
TOP VIEW Telecom and datacom power COMP 1 8 VREF Wireless base station power File server power FB 2 7 VDD Industrial power systems CS 3 6 OUT PC power supplies RTCT 4 5 GND Isolated buck and flyback regulators Boost regulators FN6320 Rev 3.00
April 18, 2007 Page 1 of 15 ISL8840A, ISL8841A, ISL8842A, ISL8843A, ISL8844A, ISL8845A Ordering Information (Continued) Ordering Information
PART
NUMBER*
ISL8840AABZ
(See Note) PART …