参数资料
| 型号： | NCV898031D1R2G |
| 厂商： | ON Semiconductor |
| 文件页数： | 2/15页 |
| 文件大小： | 0K |
| 描述： | IC REG CTRLR BUCK PWM CM 8SOIC |
| 标准包装： | 2,500 |
| PWM 型： | 电流模式 |
| 输出数： | 1 |
| 频率 - 最大： | 2.2MHz |
| 占空比： | 90% |
| 电源电压： | 3.2 V ~ 40 V |
| 降压： | 无 |
| 升压： | 是 |
| 回扫： | 无 |
| 反相： | 无 |
| 倍增器： | 无 |
| 除法器： | 无 |
| Cuk： | 无 |
| 隔离： | 无 |
| 工作温度： | -40°C ~ 150°C |
| 封装/外壳： | * |
| 包装： | * |
NCV898031
ENABLE
EN
1
OSC
SC
TEMP
FAULT
LOGIC
CLK
DRIVE
LOGIC
VDRV
6
5
4
2
VIN
C DRV
VDRV
GDRV
ISNS
L1
Q
●
C CPL
L2
●
D
V g
C g
V o
C o
VC
R C
C C
7
+
CL
SCP
SS
CSA
Gm
V ref
3
8
GND
VFB
R SNS
R F1
R F2
Figure 1. Simplified Block Diagram and Application Schematic
PACKAGE PIN DESCRIPTIONS
Pin
Pin No.
1
2
3
4
5
6
7
8
Symbol
EN
ISNS
GND
GDRV
VDRV
VIN
VC
VFB
Function
Enable input. The part is disabled into sleep mode when this pin is brought low for longer than the enable
time ? out period.
Current sense input. Connect this pin to the source of the external N ? MOSFET, through a current ? sense
resistor to ground to sense the switching current for regulation and current limiting.
Ground reference.
Gate driver output. Connect to gate of the external N ? MOSFET. A series resistance can be added from
GDRV to the gate to tailor EMC performance.
Driving voltage. Internally ? regulated supply for driving the external N ? MOSFET, sourced from VIN. Bypass
with a 1.0 m F ceramic capacitor to ground.
Input voltage. If bootstrapping operation is desired, connect a diode from the input supply to VIN, in addi-
tion to a diode from the output voltage to VDRV and/or VIN.
Output of the voltage error amplifier. An external compensator network from VC to GND is used to stabilize
the converter.
Output voltage feedback. A resistor from the output voltage to VFB with another resistor from VFB to GND
creates a voltage divider for regulation and programming of the output voltage.
http://onsemi.com
2
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相关代理商/技术参数 |
参数描述 |
|---|---|
| NCV898031SEPGEVB | 制造商:ON Semiconductor 功能描述:NCV898031 SEPIC EVAL BD - Bulk 制造商:ON Semiconductor 功能描述:BOARD EVAL FOR NCV898031 |
| NCVT-1 | 制造商:KLEIN TOOLS 功能描述:NON-CONTACT VOLTAGE TESTER W/BATT, 50-1000V 制造商:Klein Tools Inc 功能描述:Testing Equipment Non-Contact Voltage Testers |
| NCVT-1SEN | 制造商:Klein Tools Inc 功能描述:Non-Contact Voltage Tester 制造商:KLIEN TOOLS 功能描述:NON-CONTACT VOLTAGE TESTER 50-1000 VOLTS 制造商:KLIEN TOOLS 功能描述:Non-Contact Voltage Tester - w/ Batteries, 50-1000 Volts, Clip-Strip |
| NCVT-2 | 制造商:KLEIN TOOLS 功能描述:DUAL RANGE NON-CONTACT VOLTAGE TESTER- W/BATTERIES 12-1000 V |
| NCVT-3 | 功能描述:NON-CONTACT VOLTAGE TESTER WITH 制造商:klein tools, inc. 系列:- 零件状态:在售 类型:电压检测器 规格:测量交流电压 12 ~ 1000VAC 等级:CAT IV 1000V 标准包装:6 |
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