NCP5359 Datasheet, PDF (1/9 Pages) ON Semiconductor – Gate Driver for Notebook Power Systems

NCP5359
Gate Driver for Notebook
Power Systems
The NCP5359 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. Each of the drivers can
drive up to 3 nF load with a 25 ns propagation delay and 20 ns
transition time.
Adaptive nonoverlap and power saving operation circuit can
provide a low switching loss and high efficiency solution for notebook
and desktop systems.
A high floating top driver design can accommodate VBST voltage
as high as 35 V, with transient voltages as high as 35 V. Bidirectional
EN pin can provide a fault signal to controller when the gate driver
fault detect under OVP, UVLO occur. Also, an undervoltage lockout
function guarantees the outputs are low when supply voltage is low,
and a thermal shutdown function provides the IC with
overtemperature protection.
Features
• Faster Rise and Fall Times
• Thermal Shutdown Protection
• Adaptive Nonoverlap Circuit
• Floating Top Driver Accommodates Boost Voltages of up to 35 V
• Output Disable Control Turns Off Both MOSFETs
• Complies with VRM 11.1 Specifications
• Undervoltage Lockout
• Power Saving Operation Under Light Load Conditions
• Thermally Enhanced Package
• These are Pb−Free Devices
Typical Applications
• Power Solutions for Desktop and Notebook Systems
© Semiconductor Components Industries, LLC, 2009
1
February, 2009 − Rev. 3
http://onsemi.com
8
1
SOIC−8
D SUFFIX
CASE 751
MARKING
DIAGRAMS
8
N5359
ALYW
G
1
DFN−10
MN SUFFIX
CASE 485C
N5359
ALYW
G
A = Assembly Location
L = Wafer Lot
Y = Year
W = Work Week
G = Pb−Free Package
PIN CONNECTIONS
1
BST
PWM
EN
V_CC
8
DRVH
SW
GND
DRVL
1
BST
PWM
EN
V_CC
V_CC
10
DRVH
SW
GND
GND
DRVL
(Top View)
ORDERING INFORMATION
Device
Package
Shipping^†
NCP5359DR2G
NCP5359MNR2G
SOIC−8
(Pb−Free)
DFN−10
(Pb−Free)
2500 Tape & Reel
3000 Tape & Reel
†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.
Publication Order Number:
NCP5359/D