RT8116

5V/12V Single Synchronous Buck PWM Controller

The RT8116 is a low cost PWM controller with an integrated N-MOSFET gate driver for a single synchronous buck converter. The highly integrated 8-pin controller reduces size and cost of the power supply. The RT8116 can be used in a wide variety of applications, since it can work with either 5V or 12V supplies. It provides single feedback loop, voltage mode control with fast transient response. The output voltage can be precisely regulated to as low as 0.8V. Switching frequency is internally set at either 275kHz or 200kHz to save external component. The RT8116 also supports programmable soft-start function via an external capacitor. Protection features include programmable over current protection and under-voltage lockout (UVLO).

Applications

Desktop Computers
Graphic Cards
3.3V to 12V Input DC/DC Regulators
Low Voltage Distributed Power Supplies

Key Spec.
	RT8116A	RT8116B
Status	NRND	NRND
Recommended Alternative	RT8120E/RT8120F	RT8120E/RT8120F
Vs (typ) (V)	12;5	12;5
Vin (min) (V)	2	2
Vin (max) (V)	12	12
Vout (min) (V)	0.8	0.8
Vout (max) (V)	5	5
Output Adj. Method	Resistor	Resistor
Accuracy (+/- %)	1	1
Freq (typ) (kHz)	275	200
Iq (typ) (mA)	2	2
Ext Sync	No	No
Features	Built-in Bootstrap Switch;Force PWM;OCP;SCP;UVP;Voltage Mode Control	Built-in Bootstrap Switch;Force PWM;OCP;SCP;UVP;Voltage Mode Control
Package Type	SOP-8	SOP-8

Features

4.5V to 13.2V Supply Voltage Range
Voltage Mode PWM Control
Single Buck PWM Controller with Integrated N-MOSFET Driver
Integrated Boot-Strapped Diode
0.8V ±1% Internal Reference
Internally Fixed Frequency at 275kHz or 200kHz
Capacitor Programmable Soft-Start
Enable/Shutdown Control On COMP/SD Pin
85% Maximum Duty Cycle
Over Current Protection with Lossless Lower MOSFET R_DS(ON)
Input Under Voltage Lockout Protection
Under Voltage Protection
Pinless LGATE Over Current Protection Setting (LGOCS)
RoHS Compliant and Halogen Free

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