Product Summary

The FAN5234QSCX is a PWM controller which provides high efficiency and regulation with an adjustable output from 0.9V to 5.5V that are required to power I/O, chip-sets, memory banks or peripherals in high-performance notebook computers, PDAs and Internet appliances. Synchronous rectification and hysteretic operation at light loads contribute to a high efficiency over a wide range of loads. The hysteretic mode of operation can be disabled if PWM mode is desired for all load levels. Applications include Mobile PC regulator and Hand-Held PC power.

Parametrics

FAN5234QSCX absolute maximum ratings: (1)VCC Supply Voltage: 6.5 V; (2)VIN: 27 V; (3)BOOT, SW, ISNS, HDRV: 33 V; (4)BOOT to SW: 6.5 V; (5)All Other Pins: –0.3 VCC+0.3 V; (6)Junction Temperature: -10 to 150℃; (7)Storage Temperature: -65 to 150℃; (8)Lead Soldering Temperature, 10 seconds: 300℃.

Features

FAN5234QSCX features: (1)Wide input voltage range (2 to 24V) for Mobile systems; (2)Excellent dynamic response with Voltage Feed-Forward and Average Current Mode control; (3)Loss less current sensing on low-side MOSFET or precision over-current using sense resistor; (4)VCC Under-voltage Lockout; (5)Power-Good Signal; (6)Light load Hysteretic mode maximizes efficiency ; (7)QSOP16, TSSOP16; (8)300Khz or 600Khz operation.

Diagrams

FAN5234QSCX Pin Configurations

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