IC manufacturers Onsemi

IC manufacturers (99)

Onsemi NCV8851B | Demoboard NCV8851BDBGEVB

NCV8851B Automotive Grade Synchronous Buck Controller

Overview

TopologyBuck Converter
Input voltage4.5-40 V
Switching frequency170-500 kHz
Output 15 V / 3 A
IC revision2

Description

The NCV8851B Evaluation Board provides a convenientway to evaluate and integrate a complete high-efficiencysynchronous buck converter design. No additionalcomponents are required, other than dc supplies for the inputvoltage and enable pin. The board also can be connected toan external clock source to synchronize the switchingfrequency or for spread spectrum operation. The board isconfigured for a 5.0 V output with a 170 kHz switchingfrequency and a 4 A current limit, intended for applicationsrequiring over 3 A of current

Features

5.0 V Output Voltage

  • 91% Efficiency at 3 A
  • 4 A Average Current Limit (ACL)
  • 170 kHz Switching Frequency
  • Average Current Mode Control
  • Automotive Grade for up to TA = 105°C
  • Wide Input Voltage Range of 4.5 V to 40 V
  • Regulates through Load Dump Conditions
  • 1.0 A Maximum Quiescent Current in Sleep Mode
  • Programmable Fixed Frequency – 170 kHz to 500 kHz
  • External Clock Synchronization up to 600 kHz
  • Easy to Modify for Other Applications

Products

Order Code Data­sheet Simu­lation Downloads Status Product seriesL
(µH)
ISAT,10%
(A)
ISAT,30%
(A)
IR,40K
(A)
IRP,40K
(A)
RDC max.
(mΩ)
fres
(MHz)
SizeVersion Samples
7447709150SPEC
8 files Active i| Production is active. Expected lifetime: >10 years.WE-PD SMT Power Inductor 15 8 9.8 6.5 7.4 26 17 1210 Standard
Order Code Data­sheet Simu­lation
7447709150SPEC
Samples
Order Code Data­sheet Simu­lation Downloads Status Product seriesL
(µH)
ISAT,10%
(A)
ISAT,30%
(A)
IR,40K
(A)
IRP,40K
(A)
RDC max.
(mΩ)
fres
(MHz)
SizeVersion Samples