RT8124A

5V to 12V Single Synchronous Buck PWM Controller

The RT8124A is a single-phase synchronous buck PWM DC-DC controllers designed to drive two N-MOSFETs. It provides a highly accurate, programmable output voltage precisely regulated to low voltage requirement with an internal 0.6V reference. The RT8124A uses a single feedback loop voltage mode PWM control for fast transient response. The high driving capability makes it suitable for large output current applications. An oscillator with fixed frequency 300kHz reduces the component size of the external inductor and capacitor for saving PCB board area and cost.The RT8124A integrates complete protection functions such as OCP, OVP and OTP UVP into a WDFN-10L 3x3 package.

Applications

Mother Boards and Desktop Servers
Graphic Cards
Switching Power Supply
Generic DC/DC Power Regulator

Key Spec.
	RT8124A
Status	Active
Vs (typ) (V)	12
Vin (min) (V)	3.3
Vin (max) (V)	12
Vout (min) (V)	0.6
Vout (max) (V)	5
Output Adj. Method	Resistor
Accuracy (+/- %)	1
Freq (typ) (kHz)	300
Freq (min) (kHz)	250
Freq (max) (kHz)	350
Iq (typ) (mA)	2.5
Ext Sync	No
Features	Built-in Bootstrap Switch;Force PWM;OCP;OVP;SCP;UVP;Voltage Mode Control
Package Type	WDFN3x3-10

Features

Single IC Supply Voltage (5V to 12V)
Drive Two N-MOSFETs
Fixed Operating Frequency at 300kHz
Voltage Mode PWM Control with External Feedback Loop Compensation
Over Current Protection by Sensing MOSFET R_DS(ON)
Hardware Pin for On/Off Control
Full 0 to 90% Duty Cycle
Fast Transient Response
RoHS Compliant and Halogen Free

Datasheet
Title	Last Update	Download
5V to 12V Single Synchronous Buck PWM Controller	2011/11/10

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