DATASHEET
ISL8843 FN9238
Rev 2.00
September 14, 2015 Industry Standard Single-Ended Current Mode PWM Controller
The ISL8843 is an industry standard drop-in replacement for
the popular 28C43 and 18C43 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.
PART NUMBER RISING UVLO MAX. DUTY CYCLE ISL8843 8.4V 100% 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 Trimmed timing capacitor discharge current for accurate
deadtime/maximum duty cycle control 1.5MHz bandwidth error amplifier Ordering Information
PART NUMBER PKG.
DWG.
PART
TEMP.
#
MARKING RANGE (В°C) PACKAGE ISL8843ABZ
(See Note) 8843 ABZ -40 to 105 8 Ld SOIC M8.15 …
