NCP81158 Datasheet, PDF (1/8 Pages) ON Semiconductor – Synchronous Buck MOSFET Driver

NCP81158
Synchronous Buck MOSFET
Driver
The NCP81158 is a high−performance dual MOSFET gate driver in
a small 3 mm x 3 mm package, optimized to drive the gates of both
high−side and low−side power MOSFETs in a synchronous buck
converter. The driver outputs can be placed into a high−impedance
state via the tri−state PWM and EN inputs. The NCP81158 comes
packaged with an integrated boost diode to minimize external
components. A VCC UVLO function guarantees the outputs are low
when the supply voltage is low.
Features
• Space−efficient 3 mm x 3 mm DFN8 thermally−enhanced Package
• VCC Range of 4.5 V to 5.5 V
• Internal Bootstrap Diode
• 5 V 3−stage PWM Input
• Diode Braking Capability via EN Mid−state
• Adaptive Anti−cross Conduction Circuit Protects Against
Cross−conduction during FET Turn−on and Turn−off
• Output Disable Control Turns Off Both MOSFETs via Enable Pin
• VCC Undervoltage Lockout
• These Devices are Pb−free, Halogen−free/BFR−free and are RoHS
Compliant
Typical Applications
• Power Solutions for Notebook and Desktop Systems
www.onsemi.com
1
DFN8
CASE 506BJ
MARKING
DIAGRAM
1
8
81158
ALYWG
G
81158
A
L
Y
W
G
= Specific Device Code
= Assembly Location
= Wafer Lot
= Year
= Work Week
= Pb−Free Package
(Note: Microdot may be in either location)
PINOUT DIAGRAM
BST 1
PWM 2
EN 3
VCC 4
FLAG
9
8 DRVH
7 SW
6 GND
5 DRVL
ORDERING INFORMATION
Device
Package
Shipping^†
NCP81158MNTXG DFN8
3000 / Tape &
(Pb−Free)
Reel
†For information on tape and reel specifications,
including part orientation and tape sizes, please
refer to our Tape and Reel Packaging Specifications
Brochure, BRD8011/D.
© Semiconductor Components Industries, LLC, 2016
1
August, 2016 − Rev. 0
Publication Order Number:
NCP81158/D