- 您现在的位置：买卖IC网 > Datasheet目录45 > NCV8881PWR2G (ON Semiconductor)IC REG TRPL BUCK/LINEAR 16SOIC Datasheet资料下载
参数资料
| 型号： | NCV8881PWR2G |
| 厂商： | ON Semiconductor |
| 文件页数： | 22/33页 |
| 文件大小： | 321K |
| 描述： | IC REG TRPL BUCK/LINEAR 16SOIC |
| 标准包装： | 1 |
| 拓扑： | 降压（降压）（1），线性（LDO）（2） |
| 功能： | 车载 |
| 输出数： | 3 |
| 频率 - 开关： | 170kHz |
| 电压/电流 - 输出 1： | 3.3 V ~ 8 V，1.5A |
| 电压/电流 - 输出 2： | 5V，100mA |
| 电压/电流 - 输出 3： | 8.5V，40mA |
| 带 LED 驱动器： | 无 |
| 带监控器： | 无 |
| 带序列发生器： | 无 |
| 电源电压： | 5 V ~ 19 V |
| 工作温度： | -40°C ~ 150°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-SOIC（0.295"，7.50mm 宽）裸露焊盘 |
| 供应商设备封装： | 16-SOIC W |
| 包装： | 标准包装 |
| 其它名称： | NCV8881PWR2GOSDKR |
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页当前第22页第23页第24页第25页第26页第27页第28页第29页第30页第31页第32页第33页
NCV8881
http://onsemi.com
22
IGNITION BUFFER
The Ignition Buffer output IGNBUF reports the EN pin
voltage level (high or low) detected by the EN input circuitry
when the EN signal is latched. The NCV8881 will pull the
IGNBUF output low if the Enable signal is low, and release
the IGNBUF output if the Enable signal is high. The
IGNBUF output is an open drain device which requires an
external pullup resistor to a logic supply. IGNBUF is no
longer controlled by EN when EN transitions low if the EN
signal is not latched.
THERMAL SHUTDOWN
A thermal shutdown circuit will inhibit switching, reset
the Softstart circuit, and power down the 5P0 and 8P5
outputs if internal die temperature exceeds a safe level.
Operation is automatically restored when die temperature
has dropped below the thermal restart threshold regardless
of the state of the EN signal.
5P0 OUTPUT
CURRENT LIMIT
5P0 output current is limited above the specified output
current capability in order to limit inrush current at turnon
and also minimize power dissipation in the event of an
output short circuit.
OUTPUT UNDERVOLTAGE MONITOR
Either the 5P0 output voltage must exceed V
5UVSTT
or the
8P5 output voltage must exceed V
8UVSTT
before the SMPS
will begin softstart. If the output is below V
5UVSTP
, the
LDOMON output will be pulled low.
STABILITY CONSIDERATIONS
The output capacitor helps determine three main
performance characteristics of a linear regulator: starting
delay, load transient response, and loop stability. The
optimum capacitor type and value will depend on these three
characteristics, as well as cost, availability, size and
temperature constraints. Tantalum, aluminum electrolytic,
film, and ceramic are all acceptable capacitor types for most
applications. Values of 1 mF or more work in many cases,
however attention must be paid to the Equivalent Series
Resistance (ESR). Aluminum electrolytic capacitors are the
least expensive solution but both the value and ESR of this
type of capacitor change considerably at low temperatures
(25癈 or 40癈). The capacitor manufacturers data sheet
must be consulted for this information. Stability under all
load and temperature conditions is guaranteed by a capacitor
value greater than or equal to 4.7 mF and ESR between 0.2
and 5 W.
Besides powering external loads, the 5P0 output can be
used to provide a regulated voltage to an ROSC pullup
resistor as a convenient way to decrease the factoryset
switching frequency.
8P5 OUTPUT
The regulated voltage provided by the 8P5 output is used
to power the internal gate drive circuitry, but can also
provide current to modest external circuit loads that can
tolerate significant spike noise at the SMPS switching
frequency.
CURRENT LIMIT
8P5 output current is limited above the specified output
current capability in order to limit inrush current at turnon
and also minimize power dissipation in the event of an
output short circuit.
OUTPUT UNDERVOLTAGE MONITOR
Either the 8P5 output voltage must exceed V
8UVSTT
or the
5P0 output voltage must exceed V
5UVSTT
before the SMPS
will begin softstart. The LDOMON output will be pulled
low if the 8P5 output voltage is below V
8UVSTP
.
OUTPUT OVERVOLTAGE CLAMP
If current is forced into the 8P5 output, a clamp will limit
the voltage in order to protect the gate driver circuit from
excessive voltage.
STABILITY CONSIDERATIONS
The output capacitor helps determine three main
performance characteristics of a linear regulator: starting
delay, load transient response, and loop stability. The
optimum capacitor type and value will depend on these three
characteristics, as well as cost, availability, size and
temperature constraints. Tantalum, aluminum electrolytic,
film, and ceramic are all acceptable capacitor types for most
applications. Values of 1 mF or more work in many cases,
however attention must be paid to the Equivalent Series
Resistance (ESR). Aluminum electrolytic capacitors are the
least expensive solution but both the value and ESR of this
type of capacitor change considerably at low temperatures
(25癈 or 40癈). The capacitor manufacturers data sheet
must be consulted for this information. Stability under all
load and temperature conditions is guaranteed by a capacitor
value greater than or equal to 4.7 mF and ESR between 0.2 W
and 5 W.
SMPS OPERATION
LDO OUTPUT UNDERVOLTAGE MONITOR
Besides requiring the input voltage to be above V
STRT
and the EN input to be above V
ENSTHH
, either the 5P0
output voltage must exceed V
5UVSTT
or the 8P5 output
voltage must exceed V
8UVSTT
before the SMPS will begin
softstart.
SOFTSTART
Upon being enabled and released from all fault
conditions, and after one of the LDO outputs reaches
相关PDF资料 |
PDF描述 |
|---|---|
| NE1617ADS,112 | IC TEMP MONITOR 16SSOP |
| NE1619DS,118 | IC TEMP MONITOR 16SSOP |
| NIS5112D1R2G | IC ELECTRONIC FUSE HOTSWAP 8SOIC |
| NIS5132MN2TXG | IC ELECTRONIC FUSE 12V 10DFN |
| NIS5132MN3TXG | IC ELECTRONIC FUSE 12V 10-DFN |
相关代理商/技术参数 |
参数描述 |
|---|---|
| NCV890100 | 制造商:ONSEMI 制造商全称:ON Semiconductor 功能描述:1.2A, 2MHz Automotive Buck Switching Regulator |
| NCV890100MWTXG | 功能描述:IC REG BUCK ADJ 1.2A 8-DFN RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 开关稳压器 系列:- 标准包装:50 系列:- 类型:升压（升压） 输出类型:可调式 输出数:1 输出电压:5 V ~ 25 V 输入电压:2.3 V ~ 5.5 V PWM 型:电流模式 频率 - 开关:600kHz，1.2MHz 电流 - 输出:1A 同步整流器:无 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:8-TSSOP，8-MSOP（0.118"，3.00mm 宽） 包装:管件 供应商设备封装:8-MSOP |
| NCV890100PDR2G | 功能描述:直流/直流开关调节器 Auto Buck Switching Regulator 1.2A 2 MHz RoHS:否 制造商:International Rectifier 最大输入电压:21 V 开关频率:1.5 MHz 输出电压:0.5 V to 0.86 V 输出电流:4 A 输出端数量: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:PQFN 4 x 5 |
| NCV890101 | 制造商:ONSEMI 制造商全称:ON Semiconductor 功能描述:1.2A, 2MHz Automotive Buck Switching Regulator |
| NCV890101MWTXG | 功能描述:IC REG BUCK ADJ 1.2A 10DFN RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 开关稳压器 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,500 系列:- 类型:降压（降压） 输出类型:两者兼有 输出数:1 输出电压:5V，1 V ~ 10 V 输入电压:3.5 V ~ 28 V PWM 型:电流模式 频率 - 开关:220kHz ~ 1MHz 电流 - 输出:600mA 同步整流器:无 工作温度:-40°C ~ 125°C 安装类型:表面贴装 封装/外壳:16-SSOP（0.154"，3.90mm 宽） 包装:带卷 (TR) 供应商设备封装:16-QSOP |
发布紧急采购，3分钟左右您将得到回复。