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參數資料
型號: NCV8881PWR2G
廠商: ON Semiconductor
文件頁數: 1/33頁
文件大小: 321K
描述: IC REG TRPL BUCK/LINEAR 16SOIC
標準包裝: 1
拓撲: 降壓(降壓)(1),線性(LDO)(2)
功能: 車載
輸出數: 3
頻率 - 開關: 170kHz
電壓/電流 - 輸出 1: 3.3 V ~ 8 V,1.5A
電壓/電流 - 輸出 2: 5V,100mA
電壓/電流 - 輸出 3: 8.5V,40mA
帶 LED 驅動器:
帶監控器:
帶序列發生器:
電源電壓: 5 V ~ 19 V
工作溫度: -40°C ~ 150°C
安裝類型: 表面貼裝
封裝/外殼: 16-SOIC(0.295",7.50mm 寬)裸露焊盤
供應商設備封裝: 16-SOIC W
包裝: 標準包裝
其它名稱: NCV8881PWR2GOSDKR
?Semiconductor Components Industries, LLC, 2011
January, 2011  Rev. 1
1
Publication Order Number:
NCV8881/D
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.
Features
" 1.5 A Switching Regulator (internal power switch)
" 100 mA, 5 V LDO Output
" 40 mA, 8.5 V LDO Output
" 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
" Internal SMPS SoftStart
" Voltagemode SMPS Control
" SMPS CyclebyCycle Current Limit and ShortCircuit Protection
" Internal Bootstrap Diode
" 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
" 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
MARKING
DIAGRAMS
http://onsemi.com
SO16W EP
PW SUFFIX
CASE 751AG
1
16
NCV8881
AWLYYWWG
1
16
A    = Assembly Location
WL   = Wafer Lot
YY   = Year
WW   = Work Week
G    = PbFree Package
(Note: Microdot may be in either location)
See detailed ordering and shipping information in the package
dimensions section on page 32 of this data sheet.
ORDERING INFORMATION
1
16
PIN CONNECTIONS
IGNBUF
WDI
RDLY
RESB
EN
SYNC
ROSC
GND
5P0
LDOMON
8P5
VIN
SW
BST
FB
COMP
(Top View)
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