RT8130B Datasheet, PDF (1/16 Pages) Richtek Technology Corporation – 12V High Efficiency Synchronous Buck PWM Controller

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RT8130B
12V High Efficiency Synchronous Buck PWM Controller
General Description
The RT8130B is a high efficiency single phase
synchronous Buck DC/DC controller with 5V/12V supply
voltage.
The RT8130B has embedded MOSFET gate driver with
high driving capability, supporting driving voltage up to 12V
for high output current application. This device uses
lossless low-side MOSFET R_DS(ON) current sense
technique for over-current protection with adjustable
threshold set by the LGATE pin (LGOCS). Other features
include power good indication, enable/disable control and
internal soft-start. The RT8130B also provides fault
protection functions to protect the power stage output.
With above functions, the IC provides customers a cost-
effective solution for high efficiency power conversion. The
RT8130B is available in the WDFN-10L 3x3 package.
Applications
 Motherboard, Memory/Chip-set Power
 Graphic Card, GPU/Memory Core Power
 Low Voltage, High Current DC/DC Regulator
Features
 High Light Load Efficiency
 Single 5V to 12V Driver Voltage
 Integrated High Driving Capability N-MOSFET Gate
Drivers
 300kHz Fixed Frequency Internal Oscillator
 85% Maximum PWM Duty Cycle
 Power Good Indicator
 Enable/Disable Control
 Internal Soft-Start
 Lossless Low-Side MOSFET R_DS(ON) Current Sensing
for Over-Current Fault Monitoring
 LGATE Over-Current Setting (LGOCS)
 Dedicated Output Voltage Monitor
 OCP, UVP, OVP, OTP, UVLO
Ordering Information
RT8130B
Package Type
QW : WDFN-10L 3x3 (W-Type)
Note :
Lead Plating System
G : Green (Halogen Free and Pb Free)
Richtek products are :
 RoHS compliant and compatible with the current require-
ments of IPC/JEDEC J-STD-020.
 Suitable for use in SnPb or Pb-free soldering processes.
Simplified Application Circuit
V_IN
RT8130B
BOOT
V_CC
VCC
UGATE
V_OUT
V_PGOOD
EN
PGOOD
COMP/EN
PHASE
LGATE
GND
FB
Copyright ©2015 Richtek Technology Corporation. All rights reserved.
DS8130B-00 June 2015
is a registered trademark of Richtek Technology Corporation.
www.richtek.com
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