RT8121

Single Phase PWM Controller with 1-bit VID

RT8121 is a single phase PWM buck controller with one integrated MOSFET driver for advanced microprocessor application as VR12 VCCIO power. This controller maintains the same features as the multi-phase product family, but reduces the output to one phase for lower current systems. Features of this controller include adjustable operation frequency, power good indication, external error-amp compensation, over voltage protection, over current protection, externally adjustable offset voltage, load transient enhancement (quick response), and enable/shutdown control to achieve optimal power management solution for various applications. The RT8121 comes in the WQFN-20L 3x3 package.

Applications

VR12 VCCIO Voltage Regulator
Low Voltage, High Current DC/DC Converter

Key Spec.
	RT8121
Status	Active
Vs (typ) (V)	12
Vin (min) (V)	4.5
Vin (max) (V)	13.2
Vout (min) (V)	1
Vout (max) (V)	1.05
Output Adj. Method	Resistor
Accuracy (+/- %)	0.5
Freq (typ) (kHz)	200
Freq (min) (kHz)	200
Freq (max) (kHz)	800
Iq (typ) (mA)	6
Ext Sync	No
Features	Adjustable Frequency;Adjustable Soft-Start;Built-in Bootstrap Switch;DCR Current Sense;Droop Control;Enable Input;Force PWM;OCP;OVP;Power Good;SCP;Voltage Mode Control
Package Type	WQFN3x3-20

Features

Single Phase Power Conversion
One Embedded MOSFET Driver with Internal Bootstrap Diode
1-bit VID Table for VR12 VCCIO
Continuous Differential Inductor DCR Current Sense
Adjustable Soft-Start
Adjustable Frequency Typically at 200kHz
Power Good Indication
Adjustable Over Current Protection
Over Voltage Protection
Over Temperature Protection
Small 20-Lead WQFN Package
RoHS Compliant and Halogen Free

Datasheet
Title	Last Update	Download
Single Phase PWM Controller with 1-bit VID	2010/05/31

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