NCP81146 Datasheet, PDF (1/8 Pages) ON Semiconductor – Compatible Synchronous Buck MOSFET Drivers

NCP81146
VR12.5 Compatible
Synchronous Buck MOSFET
Drivers
The NCP81146 is a high performance dual MOSFET gate driver
optimized to drive the gates of both high−side and low−side power
MOSFETs in a synchronous buck converter. It can drive up to 3 nF
load with a 25 ns propagation delay and 20 ns transition time.
Adaptive anti−cross−conduction and power saving operation
circuit can provide a low switching loss and high efficiency solution
for notebook and desktop systems. Bidirectional EN pin can provide
a fault signal to controller when the gate driver fault detect under
OVP, UVLO occur. Also, an under−voltage lockout function
guarantees the outputs are low when supply voltage is low.
Features
• Faster Rise and Fall Times
• Adaptive Anti−Cross−Conduction Circuit
• Integrated Bootstrap Diode
• Pre OV function
• ZCD Detect
• Floating Top Driver Accommodates Boost Voltages of up to 35 V
• Output Disable Control Turns Off Both MOSFETs
• Under−voltage Lockout
• Power Saving Operation Under Light Load Conditions
• Direct Interface to NCP6151 and Other Compatible PWM
Controllers
• Thermally Enhanced Package
• These Devices are Pb−Free, Halogen Free/BFR Free and are RoHS
Compliant
Typical Applications
• Power Solutions for Desktop Systems
http://onsemi.com
1
DFN8
MN SUFFIX
CASE 506AA
MARKING DIAGRAM
1
A4MG
G
A4 = Specific Device Code
M = Date Code
G = Pb−Free Device
ORDERING INFORMATION
Device
Package
Shipping^†
NCP81146MNTBG DFN8 3000 / Tape & Reel
(Pb−Free)
†For information on tape and reel specifications,
including part orientation and tape sizes, please
refer to our Tape and Reel Packaging Specification
Brochure, BRD8011/D.
© Semiconductor Components Industries, LLC, 2013
1
October, 2013 − Rev. 0
Publication Order Number:
NCP81146/D