FAN53745UC00X

The FAN53745 is a low quiescent current step−down DC/DC converter that delivers a regulated output voltage from an input supply of 2.3 V to 5.5 V. The combination of built−in power transistors, synchronous rectification, and a tiny solution size make the device ideal for portable applications. The converter normally operates in PWM Mode at a typical fixed−frequency of 3.33 MHz. At moderate and light loads, the device will transition into PFM Mode to maintain high efficiency and excellent transient response. Additionally, a low power Shutdown Mode reduces power consumption when the device is disabled. The FAN53745 is available in 6−bump, 0.4 mm pitch, Wafer−Level Chip−Scale Package (WLCSP).

Applications

• Smart Phones Smart Watch Health Monitoring
• Sensor Drive
• Energy Harvesting Utility and Safety Modules
• RF Modules

Key features

• Proprietary Current Mode Architecture
• Wide Input Voltage Range: 2.3 V to 5.5 V
• 1 A Load Capability
• PFM / PWM Modes for High Efficiency
• I²C−compatible Interface
• Programmable Output Voltage: 1.5 V to 3.3 V
• Programmable Current Limit: 440 mA to 2090 mA
• Internal Soft−Start
• Protection Faults (OT, Input UVLO, Output Short and Reverse Current)
• Automatic Pass−Through Operation
• Hardware Reset when Holding SCL Low
• Pb−Free and RoHS Compliant