MAX1762 Datasheet PDF | Maxim Integrated

Maxim Integrated MAX1762

The MAX1762/MAX1791 PWM step-down controllers provide high efficiency, excellent transient response, and high DC output accuracy needed for stepping down high-voltage batteries to generate low-voltage CPU core, I/O, and chipset RAM supplies in notebook computers and PDAs. Its high operating frequency (300kHz) allows small external components to be utilized in PC board area-critical applications such as subnotebook computers and smart phones. The external high-side P-channel and low-side N-channel MOSFETs require no bootstrap components.

Part No.	MAX1762
Datasheet	MAX1762 Download
Manufacturer	Maxim Integrated
Description	High-Efficiency / 10-Pin MAX / Step-Down Controllers
Buy	Stock & Price

GENERAL DESCRIPTION

Maxim’s proprietary Quick-PWM™ pulse-width modulator is a free-running constant on-time type with input feed-forward. PWM operation occurs at heavy loads, and automatic switchover to pulse-skipping operation occurs at lighter loads. The MAX1762/ MAX1791 are simple, easy to compensate, and do not have the noise sensitivity of conventional fixed-frequency current-mode PWMs. These devices achieve high efficiency at a reduced cost by eliminating the current-sense resistor found in traditional current-mode PWMs. Efficiency is further enhanced by their ability to drive synchronous-rectifier MOSFETs. The MAX1762/MAX1791 come in a 10-pin µMAX package and offer two fixed voltages (Dual Mode™) for each device, 1.8V/2.5V/adj (MAX1762) and 3.3V/5.0V/adj (MAX1791). o High Operating Frequency (300kHz) o No Current-Sense Resistor o Accurate Current Limit o ±1% Total DC Error over Line and During Continuous Conduction o Dual Mode Fixed Output 1.8V/2.5V/adj (MAX1762) 3.3V/5.0V/adj (...