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NCV8881_11 PDF预览

NCV8881_11

更新时间: 2024-10-26 12:00:19
品牌 Logo 应用领域
安森美 - ONSEMI 稳压器
页数 文件大小 规格书
33页 327K
描述
1.5A Automotive Buck Regulator with Watchdog

NCV8881_11 数据手册

 浏览型号NCV8881_11的Datasheet PDF文件第2页浏览型号NCV8881_11的Datasheet PDF文件第3页浏览型号NCV8881_11的Datasheet PDF文件第4页浏览型号NCV8881_11的Datasheet PDF文件第5页浏览型号NCV8881_11的Datasheet PDF文件第6页浏览型号NCV8881_11的Datasheet PDF文件第7页 
NCV8881  
1.5A Automotive Buck  
Regulator with Watchdog  
The NCV8881 consists of a Buck switching regulator (SMPS) with  
a combination SMPS output undervoltage monitor and CPU watchdog  
circuit. In addition, two fixedvoltage low dropout regulator outputs  
are provided, and share an LDO output voltage status output. Once  
enabled, regulator operation continues until the Watchdog signal is no  
longer present. The NCV8881 is intended for Automotive,  
batteryconnected applications that must withstand a 40 V load dump.  
The switching regulator is capable of converting the typical 9 V to  
19 V automotive input voltage range to outputs from 3.3 V to 8 V at a  
constant switching frequency, which can be resistor programmed or  
synchronized to an external clock signal. Enable input threshold and  
hysteresis are programmable, with the enable input state replicated at  
an open drain Ignition Buffer output. The regulators are protected by  
current limiting, input overvoltage and overtemperature shutdown, as  
well as SMPS short circuit shutdown.  
http://onsemi.com  
MARKING  
DIAGRAMS  
16  
SO16W EP  
PW SUFFIX  
CASE 751AG  
NCV8881  
16  
AWLYYWWG  
1
1
A
= Assembly Location  
= Wafer Lot  
= Year  
= Work Week  
= PbFree Package  
WL  
YY  
WW  
G
Features  
1.5 A Switching Regulator (internal power switch)  
100 mA, 5 V LDO Output  
40 mA, 8.5 V LDO Output  
(Note: Microdot may be in either location)  
Operating Range 5 V to 19 V  
Programmable SMPS Frequency  
SMPS can be Synchronized to an External Clock  
Programmable SMPS Output Voltage Down to 0.8 V  
$2% Reference Voltage Tolerance  
PIN CONNECTIONS  
1
16  
IGNBUF  
WDI  
RDLY  
RESB  
EN  
5P0  
LDOMON  
8P5  
VIN  
SW  
Internal SMPS SoftStart  
Voltagemode SMPS Control  
SMPS CyclebyCycle Current Limit and ShortCircuit Protection  
Internal Bootstrap Diode  
SYNC  
ROSC  
GND  
BST  
FB  
COMP  
Logic level Enable Input  
Enable Input Hysteresis Programmable by External Resistor Divider  
Enable Input State is Replicated at an Open Drain Output  
CPU Watchdog with Resistor Programmable Delays  
Watchdog Reset Output also Indicates SMPS Output Out of Regulation  
Battery Input Withstands Load Dump to 40 V  
Low Standby Current  
(Top View)  
ORDERING INFORMATION  
See detailed ordering and shipping information in the package  
dimensions section on page 32 of this data sheet.  
Thermal Shutdown (TSD)  
NCV Prefix for Automotive and Other Applications Requiring Site  
and Change Controls  
These are PbFree Devices  
Applications  
Audio  
Infotainment  
Safety – Vision Systems  
Instrumentation  
© Semiconductor Components Industries, LLC, 2011  
1
Publication Order Number:  
January, 2011 Rev. 1  
NCV8881/D  

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