ISL81100 Datasheet | Renesas

Description The ISL81100 is a synchronous buck controller that generates a stepped-down output for various applications in industrial and general-purpose segments. Its wide input and output voltage ranges make it suitable for telemunication, data center, and puting applications. The ISL81100 uses fixed frequency peak current mode PWM control. It has a voltage regulator, current monitor, and average current regulator to provide independent average voltage and current control. The internal oscillator is adjustable from 100k Hz to 2MHz and can be synchronized to an external clock signal for frequency synchronization and phase interleaving applications. It can also support accurate, current sharing for parallel applications. The ISL81100 offers programmable soft-start, accurate threshold enable functions, and a power-good indicator for ease of supply rail sequencing requirements. It also provides plete protection features such as OVP, VIN_UVLO, OTP, average and peak current limits in a forward direction, and negative peak current limits in a reverse direction to ensure high reliability. The IC is available in a space-conscious 25 Ld 5mm x5mm TQFN package. This package uses an EPAD to improve thermal dissipation and noise immunity. The plete feature design with low pin count makes the ISL81100 ideal for quick-to-market simple power supply designs. Features - Wide input voltage range: 4.5V to 100V - Wide output voltage range: 0.8V to 96V - Two MOSFET drivers with adaptive shoot-through protection - Constant output voltage and output current feedback loop control - Light-load efficiency enhancement - Low ripple diode emulation mode operation - Programmable soft-start - Supports pre-biased output with SR soft-start - Programmable frequency: 100k Hz to 2MHz - Support current sharing - External clock sync - PGOOD indicator - Output current monitor - Selectable mode between PWM/DEM - Accurate VIN_UVLO threshold: ±3% - Low shutdown current: 4µA - plete protection: OCP (pulse by...