©
Semiconductor Components Industries, LLC, 2016
November, 2016
−
Rev. 0
1
Publication Order Number:
EVBUM2492/D
NCV891234, NCV891334
NC
V891234, NCV891334
Evaluation Board
User'sManual
Description
The NCV891x34 is a Dual Mode regulator intended for
Automotive, battery
−
connected applications. The output is
fixed to either 3.3 V or 5.0 V, capable of delivering 2.0 A
(NCV891234) or 3.0 A (NCV891334). At low output
currents (
≤
50 mA), the device will operate in LDO mode,
switching to PWM mode as current increases beyond
50 mA. The device is equipped with SYNCI and SYNCO
pins to synchronize to an external clock and/or another
NCV891x34. A reset (with fixed delay) and a fault pin
(flagging low input voltage and high temperature warnings)
simplify interfacing with a microcontroller.
This document will help the user to set up the hardware
and to make demonstration kit running. All evaluation kit
components will be described (evaluation board,
connections, jumper’s configuration). A quick test
procedure will be also described to guide the user.
Figure 1. Evaluation Board Photo
Top Side
Bottom Side
Features and Benefits
•
40
m
A Iq in Light Load Condition
•
2.0 A Maximum Output Current in PWM Mode in
NCV891234
•
3.0 A Maximum Output Current in PWM Mode in
NCV891334
•
Internal N
−
channel Power Switch
•
V
IN
Operating Range 3.7 V to 36 V, Withstands Load
Dump to 45 V
•
Logic Level Enable Pin can be Tied to Battery
•
Fixed Output Voltage of 5.0 V or 3.3 V with
±
2%
Accuracy
•
2 MHz Free
−
running Switching Frequency
•
Input and Output Synchronization Pins
Typical Applications
•
Safety – Vision Systems
•
Audio, Infotainment
•
Instrumentation
•
Telematics
www.onsemi.com
EVAL BOARD USER’S MANUAL
