Fairchild Semiconductor FAN5232
The FAN5232 is a high efficiency and high precision DC/DC controller for PCs. It has a synchronous switcher whose output can be adjusted from 5V up to 80% of Vin. It also has two linear regulators for standby, 3.3V and 5V.| Part No. | FAN5232 |
|---|---|
| Datasheet | FAN5232 Download |
| Manufacturer |  Fairchild Semiconductor |
| Description | Adjustable PWM Buck Controller |
| Buy | Stock & Price |
FEATURES
● Three outputs: Adjustable Buck, 3.3V-Always, 5V-Always● Adjustable synchronous switcher, 5V – 80% Vin
● 1% internal reference precision
● Current mode with voltage feed-forward
● Precision current limit option
● Charge pump works at all loads
● No shoot-through current
● Independent shutdown pins for ACPI
● Power Good, input UVLO, output OV
● 5.6V to 24V input voltage range
DESCRIPTION
The PWM utilizes both input and output voltage feedback in a current-mode control, allowing for fast and stable loop response over a wide range of input and output variations. Synchronous switching provides best efficiency over a wide range of loads. Current sense based on MOSFET RDS,on gives maximum efficiency, while also permitting use of an optional sense resistor for high precision. The FAN5232 is available in a 14 pin TSSOP package.APPLICATIONS
● LCD PCs● Notebook PCs and PDAs
● Hand-held portable instruments Block Diagram Vin = 16–22V 1 3.3V-Always 5V-Always 2 3 FAN5232 4 SDWN SDNADJ PWRGD 5 6 7 14 13 12 11 10 9 8 + 12V @ 8A REV.
