ISSI IS32PM3427 | Demoboard IS32PM3427 DEMO BOARD

Description

The IS32PM3427 regulator is an easy-to-use synchronous step-down DC-DC converter capable of driving up to 4A of load current from an input voltage ranging of 3.8V to 36V. The IS32PM3427 provides exceptional efficiency, output accuracy and drop-out voltage in a very small solution size. Constant on-time control mode is employed to achieve simple controlloop compensation and fast transient response. The IS32PM3427 supports both Forced Continuous Conduction Mode (FCCM) and Pulse Frequency Modulation mode (PFM) at light-load condition, which is selected by the FPWM pin. It requires few external components. Pin arrangement allows simple, optimum PCB layout. Protection features include thermal shutdown, VDD under-voltage lockout, cycleby- cycle current limit, over-voltage and output shortcircuit protection.The IS32PM3427 device is available in the WFCQFN- 14 (3mm × 4mm) package.

Features

• Input voltage range from 3.8V to 36V
• 1µA (Typ.) shutdown current
• 25µA quiescent current (typical, no switching)
• Up to 4A output current capability
• Adjustable output voltage, 1V to 24V
• Output regulation accuracy
• 93% efficiency (5V/3A)

• 91% efficiency at light load (5V/100mA)

• Integrated 80mΩ High-Side and 40mΩ Low-Side MOSFETs
• Pin-selectable FCCM or PFM operation mode
• Spread spectrum to minimize EMI
• Few external components - Internal loop compensation - Internal soft-start
• AEC-Q100 Qualified with Temperature Grade 1: -40°C to 125°C

Typical applications

• Automotive body electronics
• Automotive LED lighting system
• General-purpose power supply

More information

• IC product information