Renesas Electronics Corporation PMIC - PMIC - Power Supply Controllers, Monitors - ISL62391HRTZ ISL62391HRTZ

The ISL62391HRTZ is a high-efficiency power supply controller designed for notebook computers and similar battery-powered devices. It features two pulse-width modulation (PWM) controllers that can be adjusted to output voltages ranging from 0.6V to 5.5V, along with a fixed 3.3V linear regulator capable of delivering up to 100mA. The device incorporates on-board power-up sequencing, a power-good output, and digital soft-start functionality, which enhances system reliability during power transitions. This controller utilizes a patented R3 PWM control scheme for low jitter and fast transient response, making it suitable for applications requiring quick load adjustments. It also supports light-load efficiency through a period-stretching discontinuous conduction mode (DCM) and includes an ultrasonic DCM mode to minimize noise in audio applications by limiting the minimum switching frequency to 28kHz. The ISL62391HRTZ operates over a wide input voltage range of 5.5V to 25V and is equipped with comprehensive protection features, including overvoltage, undervoltage, and overcurrent protection, as well as thermal monitoring. It is housed in a compact 28-lead 4x4 TQFN package and is rated for an operating temperature range of -10¬8C to +100¬8C. This product is suitable for various applications, including notebook and sub-notebook computers, PDAs, and mobile communication devices.