NCP1080
http://onsemi.com
5
Table 1. PIN DESCRIPTIONS
Name
Pin No.
Type
Description
VPORTP
1
Supply
Positive input power. Voltage with respect to VPORTN
1,2
VPORTN1
VPORTN2
6,8
Ground
Negative input power. Connected to the source of the internal passswitch.
RTN
7
Ground
DCDC controller power return. Connected to the drain of the internal passswitch. It must
be connected to ARTN. This pin is also the drain of the internal passswitch.
ARTN
14
Ground
DCDC controller ground pin. Must be connected to RTN as a single point ground connection
for improved noise immunity.
VDDH
16
Supply
Output of the 9 V LDO internal regulator. Voltage with respect to ARTN. Supplies the internal
gate driver. VDDH must be bypassed to ARTN with a 1 mF or 2.2 mF ceramic capacitor with
low ESR.
VDDL
17
Supply
Output of the 3.3 V LDO internal regulator. Voltage with respect to ARTN. This pin can be
used to bias an external lowpower LED (1 mA max.) connected to ARTN, and can also be
used to add extra biasing current in the external optocoupler. VDDL must be bypassed to
ARTN with a 330 nF or 470 nF ceramic capacitor with low ESR.
CLASS
2
Input
Classification current programming pin. Connect a resistor between CLASS and VPORTN
1,2
.
INRUSH
4
Input
Inrush current limit programming pin. Connect a resistor between INRUSH and VPORTN
1,2
.
ILIM1
5
Input
Operational current limit programming pin. Connect a resistor between ILIM1 and
VPORTN
1,2
.
UVLO
3
Input
DCDC controller undervoltage lockout input. Voltage with respect to VPORTN
1,2
. Connect
a resistordivider from VPORTP to UVLO to VPORTN
1,2
to set an external UVLO threshold.
GATE
15
Output
DCDC controller gate driver output pin.
OSC
11
Input
Internal oscillator frequency programming pin. Connect a resistor between OSC and ARTN.
NC
13
No connect pin, must not be connected.
COMP
18
I/O
Output of the internal error amplifier of the DCDC controller. COMP is pulledup internally to
VDDL with a 5 kW resistor. In isolated applications, COMP is connected to the collector of the
optocoupler. Voltage with respect to ARTN.
FB
19
Input
DCDC controller inverting input of the internal error amplifier. In isolated applications, the pin
should be strapped to ARTN to disable the internal error amplifier.
CS
12
Input
Currentsense input for the DCDC controller. Voltage with respect to ARTN.
SS
20
Input
Softstart input for the DCDC controller. A capacitor between SS and ARTN determines the
softstart timing.
TEST1
9
Input
Digital test pin must always be connected to VPORTN
1,2
.
TEST2
10
Input
Digital test pin must always be connected to VPORTN
1,2
.
EP
Exposed pad. Connected to VPORTN
1,2
ground.
发布紧急采购，3分钟左右您将得到回复。
相关PDF资料
NCP1081DEG
IC CONV CTLR POE-PD 40W 20-TSSOP
NCP1082DEG
IC CONV CTLR POE-PD 13W 20-TSSOP
NCP1083DEG
IC CONV CTLR POE-PD 40W 20-TSSOP
NCP1501DMR2G
IC REG SGL BUCK/LINEAR 8MICRO
NCP1578MNR2G
IC REG DL BCK/LINEAR SYNC 20-QFN
NCP1601BDR2G
IC PFC CTRL CRM/TRANSITION 8SOIC
NCP1603D100R2G
IC CTLR PFC/PWM COMBO 16-SOIC
NCP1605DR2G
IC PFC CONTROLLER CCM/DCM 16SOIC
相关代理商/技术参数
NCP1080DER2G
功能描述:直流/直流开关转换器 POE-PD 13W DC-DC RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT
NCP1081
制造商:ONSEMI 制造商全称:ON Semiconductor 功能描述:Integrated High Power PoE-PD Interface & DC-DC Converter Controller
NCP1081DEG
功能描述:DC/DC 开关控制器 POE-PD 40W DC-DC RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK
NCP1081DER2G
功能描述:DC/DC 开关控制器 POE-PD 40W DC-DC RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK
NCP1081SPCGEVB
功能描述:电源管理IC开发工具 HPOWER POE-PD SPLITTER
RoHS:否 制造商:Maxim Integrated 产品:Evaluation Kits 类型:Battery Management 工具用于评估:MAX17710GB 输入电压: 输出电压:1.8 V
NCP1082
制造商:ONSEMI 制造商全称:ON Semiconductor 功能描述:Integrated PoE-PD & DC-DC Converter Controller with 9V Auxiliary Supply Support
NCP1082DEG
功能描述:直流/直流开关转换器 POE-PD 13W DC-DC AUX SUPP RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT
NCP1082DER2G
功能描述:直流/直流开关转换器 POE-PD 13W DC-DC AUX SUPP RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT
