RT8841

4/3/2/1-Phase PWM Controller for High-Density Power Supply

The RT8841 is a 4/3/2/1-phase synchronous buck controller with 2 integrated MOSFET drivers for VR11 CPU power application. RT8841 uses differential inductor DCR current sense to achieve phase current balance and active voltage positioning. Other features include adjustable operating frequency, adjustable soft start, power good indication, external error-amp compensation, over voltage protection, over current protection and enable/shutdown for various applications. RT8841 comes to a small footprint with WQFN-40L 6x6 package.

Applications

Desktop CPU Core Power
Low Voltage, High Current DC/ DC Converter

Key Spec.
	RT8841
Status	Active
VID Table Support	K8;K8_M2;VR10.x;VR11.0
Number of Phases	4
Vcc (typ) (V)	12
Vin (min) (V)	10.8
Vin (max) (V)	13.2
Accuracy (Vout>=1V) (+/- %)	0.5
Freq (typ) (kHz)	300
Built-in DAC Generator	Yes
Number of MOSFET Drivers	2
Features	Adjustable Frequency;Adjustable Soft-Start;DCR Current Sense;Droop Control;Enable Input;OCP;OVP;Power Good;SCP;Voltage Mode Control
Package Type	WQFN6x6-40

Features

12V Power Supply Voltage
4/3/2/1-Phase Power Conversion
2 Embedded MOSFET Drivers
Internal Regulated 5V Output
VID Tables for Intel VRD11/VRD10.x and AMD K8, K8_M2 CPUs
Continuous Differential Inductor DCR Current Sense
Adjustable Soft Start
Adjustable Frequency
Power Good Indication
Adjustable Over Current Protection
Over Voltage Protection
Small 40-Lead WQFN Package
RoHS Compliant and 100% Lead(Pb)-Free

Datasheet
Title	Last Update	Download
4/3/2/1-Phase PWM Controller for High-Density Power Supply	2015/05/19

Please confirm with our distributor or sales representative for actual stock status.