Product Overview

Product Overview
NCV8843: Buck Regulator, 1.5 A, 340 kHz, with Synchronization Capability
For complete documentation, see the data sheet
Product Description
2
The NCV8843 is a 1.5 A buck regulator IC operating at a fixed frequency of 340 kHz. The device employs the V ™ control
architecture to provide unmatched transient response, the best overall regulation and the simplest loop compensation. The
NCV8842 accommodates input voltages from 4.0 V to 40 V and contains synchronization circuitry. The on-chip NPN transistor is
capable of providing a minimum of 1.5 A of output current and is biased by an external boost capacitor to ensure saturation, thus
minimizing on-chip power dissipation. Protection circuitry includes thermal shutdown, cycle-by-cycle current limiting and frequency
foldback short-circuit protection.
Features
Benefits
2
• V ™ Control Architecture
•
•
•
•
2.0% Error Amp Reference Voltage Tolerance
Cycle-by-Cycle Current Limiting
Switch Frequency Decrease of 4:1 in Short Circuit
Bootstrapped Operation (BOOST)
•
•
•
•
Synchronization to External Clock (SYNC)
1.0 A Shutdown Quiescent Current
Thermal Shutdown
Soft-Start
• Ultra-fast Transient Response, Improved Regulation and
Simplified Design
• Tight Output Regulation
• Limits Switch and Inductor Current
• Reduces Short Circuit Power Dissipation
• Increased Efficiency and Minimized On-Chip Power
Dissipation
• Synchronization to External Clock (SYNC)
• Minimize Current Consumption when SHDNB is Asserted
• Protect IC from Over-Temperature
• Decrease Inrush Current and Minimize Output Over-shoot
During Start-Up
• Pb-Free Packages are Available
For more features, see the data sheet
Applications
End Products
• Automotive
• Industrial
• Dc-dc power supplies
Part Electrical Specifications
Product
Compliance
Status
Topology
Control
Mode
VCC Min
(V)
VCC Max
(V)
NCV8843MNR2G
AEC
Qualified
Active
StepDown
V2
4
40
Active
StepDown
V2
4
40
VO Typ (V) IO Typ (A)
Efficiency
(%)
fSW Typ
(kHz)
Package
Type
1.5
Up to 700
DFN-18
1.5
Up to 700
SOIC-16W
PPAP
Capable
Pb-free
Halide free
NCV8843PWR2G
AEC
Qualified
PPAP
Capable
Pb-free
Halide free
Application Diagram
For more information please contact your local sales support at www.onsemi.com
Created on: 6/30/2016