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NCV8842PWGEVB

NCV8842 Buck Regulator 7.0 V-16 V to 5.0 V, 3.3 V and 2.5 V @ 1.0 A Evaluation Board User's Manual

ON Semiconductor 

NCV8842PWGEVB

NCV8842 Buck Regulator

7.0 V-16 V to 5.0 V, 3.3 V

and 2.5 V @ 1.0 A

Evaluation Board User's

Manual

http://onsemi.com

EVAL BOARD USER’S MANUAL

Description

The NCV8842 Evaluation Boards provide a convenient

way to implement and evaluate a complete practical buck

regulator design. No additional components are required

other than the DC input source and load. Separate boards are

available for the SOIC−16 and DFN−18 versions of the

device. The SOIC−16 board has an input voltage range of

7 V – 16 V and includes jumpers to set the DC output voltage

to 2.5 V, 3.3 V or 5.0 V. The DFN−18 board has an input

voltage range of 6 V – 16 V and is preset for a nominal output

voltage of 3.3 V.

Both boards include SHDNB and SYNC terminals for

logic on−off control of the regulator and synchronization of

the internal controller to a external frequency source instead

of the internal 170 kHz oscillator.

Features

• V@ Control Method for Uncomplicated Loop

Compensation, Fast Transient Response, and Reduced

Board Area

• A Total of 12 Components, Including the IC, to Realize

a Complete Buck Regulator

• Shutdown Terminal to Disable the Output and Provide

a Low Current Drain Standby Mode

• Sync Terminal to Permit Controller Synchronization to

an External Source

• 1.5 A Peak Inductor Current

• Cycle−by−Cycle Frequency−Foldback Current Limiter

• Soft Start Function to Reduce Inrush Current

• 87% Efficiency at 1 A Load Current (5 V Output)

• Line Regulation Better Than 0.02%

• Load Regulation Better Than 0.2%

BR3

VIN

C2

GND

SHDN

BR2

BR1

C3

GND

VOUT

L1

SYNC

Figure 1. NCV8842 Evaluation Board (SOIC Package)

GND

© Semiconductor Components Industries, LLC, 2012

1

May, 2012 − Rev. 3

Publication Order Number:

EVBUM2118/D

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