|
NCV8856 Datasheet, PDF (1/19 Pages) ON Semiconductor – Automotive Grade Synchronous Buck Controller | |||
|
NCV8856
Automotive Grade
Synchronous Buck
Controller
The NCV8856 is an adjustable output, synchronous buck controller,
which drives dual Nâchannel MOSFETs, ideal for high power
applications. Average current mode control is employed for very fast
transient response and tight regulation over wide input voltage and
output load ranges. The IC incorporates an internal fixed 6.0 V
lowâdropout linear regulator (LDO), which supplies charge to the
switch mode power supplyâs (SMPS) bottom gate driver, limiting the
power lost to excess gate drive. The IC is designed for operation over
an input voltage range of 4.5 V to 38 V and is capable of 10 to 1
voltage conversion at 500 kHz.
Additional controller features include undervoltage lockout,
overvoltage shutdown, internal softâstart, low quiescent current sleep
mode, programmable frequency, SYNC function, average current
limiting, cycleâbyâcycle overcurrent protection and thermal
shutdown.
Features
⢠Average Current Mode Control
⢠0.8 V ±2% Reference Voltage
⢠Wide Input Voltage Range of 4.5 V to 38 V
⢠Operates through Load Dump Conditions
⢠6.0 V Lowâdropout Linear Regulator (LDO)
⢠Input UVLO (Undervoltage Lockout)
⢠Internal Softâstart
⢠1.0 mA Maximum Quiescent Current in Sleep Mode
⢠Adaptive Nonâoverlap Circuitry
⢠180 ns Minimum Highâside Gate Offâtime
⢠Programmable Fixed Frequency â 170 kHz to 500 kHz
⢠External Clock Synchronization up to 600 kHz
⢠Average Current Limiting (ACL)
⢠CycleâbyâCycle Overcurrent Protection (OCP)
⢠Thermal Shutdown (TSD)
⢠This is a PbâFree Device
Applications
⢠Automotive Systems Requiring High Current
⢠Preâregulated Supply for Lowâvoltage SMPSs and LDOs
www.onsemi.com
TSSOPâ20 EP
SUFFIX AB
CASE 948AB
MARKING DIAGRAM
V88
56
ALYWG
G
V8856
A
L
Y
W
G
= Specific Device Code
= Assembly Location
= Wafer Lot
= Year
= Work Week
= PbâFree Package
(Note: Microdot may be in either location)
ORDERING INFORMATION
Device
Package
Shippingâ
NCV8856DBR2G TSSOPâ20 EP 2500/Tape
(PbâFree)
& Reel
â 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, 2016
1
October, 2016 â Rev. 0
Publication Order Number:
NCV8856/D
|
▷ |