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参数资料
| 型号： | NCP1450ASN33T1 |
| 厂商： | ON Semiconductor |
| 文件页数： | 1/22页 |
| 文件大小： | 0K |
| 描述： | IC REG CTRLR BST PWM VM 5TSOP |
| 产品变化通告： | LTB Notification 03/Jan/2008 |
| 标准包装： | 1 |
| PWM 型： | 电压模式 |
| 输出数： | 1 |
| 频率 - 最大： | 216kHz |
| 占空比： | 90% |
| 电源电压： | 0.6 V ~ 5.5 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 ~ 85°C |
| 封装/外壳： | 6-TSOP（0.059"，1.50mm 宽）5 引线 |
| 包装： | 剪切带 (CT) |
| 其它名称： | NCP1450ASN33TOSCT |
NCP1450A
PWM Step?up DC?DC
Controller
The NCP1450A series are PWM step?up DC?DC switching
controller that are specially designed for powering portable equipment
from one or two cells battery packs. The NCP1450A series have a
driver pin, EXT pin, for connecting to an external transistor. Large
output currents can be obtained by connecting a low ON?resistance
external power transistor to the EXT pin. The device will
automatically skip switching cycles under light load condition to
http://onsemi.com
maintain high efficiency at light loads. With only six external
components, this series allows a simple means to implement highly
5
1
efficient converter for large output current applications.
Each device consists of an on?chip Pulse Width Modulation (PWM)
oscillator, PWM controller, phase?compensated error amplifier,
soft?start, voltage reference, and driver for driving external power
transistor. Additionally, a chip enable feature is provided to power
down the converter for extended battery life.
The NCP1450A device series are available in the TSOP?5 package
with five standard regulated output voltages. Additional voltages that
TSOP?5
SN SUFFIX
CASE 483
MARKING DIAGRAM AND
PIN CONNECTIONS
range from 1.8 V to 5.0 V in 100 mV steps can be manufactured.
CE
1
5
EXT
Features
? High Efficiency 86% at I O = 200 mA, V IN = 2.0 V, V OUT = 3.0 V
88% at I O = 400 mA, V IN = 3.0 V, V OUT = 5.0 V
? Low Startup Voltage of 0.9 V typical at I O = 1.0 mA
? Operation Down to 0.6 V
? Five Standard Voltages: 1.9 V, 2.7 V, 3.0 V, 3.3 V, 5.0 V with High
Accuracy ± 2.5%
? Low Conversion Ripple
? High Output Current up to 1000 mA
(3.0 V version at V IN = 2.0 V, L = 10 m H, C OUT = 220 m F)
? Fixed Frequency Pulse Width Modulation (PWM) at 180 kHz
? Chip Enable Pin with On?chip 150 nA Pullup Current Source
? Low Profile and Micro Miniature TSOP?5 Package
? Pb?Free Packages are Available
Typical Applications
OUT 2
NC 3 4 GND
(Top View)
xxx =Specific Device Marking
A = Assembly Location
Y = Year
W = Work Week
G = Pb?Free Package
(Note: Microdot may be in either location)
ORDERING INFORMATION
See detailed ordering and shipping information in the ordering
?
?
?
?
?
Personal Digital Assistant (PDA)
Electronic Games
Portable Audio (MP3)
Digital Still Cameras
Handheld Instruments
? Semiconductor Components Industries, LLC, 2005
December, 2005 ? Rev. 7
1
Publication Order Number:
NCP1450A/D
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相关代理商/技术参数 |
参数描述 |
|---|---|
| NCP1450ASN33T1G | 功能描述:直流/直流开关转换器 3.3V 1A Boost DC-DC PWM 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 |
| NCP1450ASN50T1 | 功能描述:直流/直流开关转换器 5V 1A Boost 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 |
| NCP1450ASN50T1G | 功能描述:直流/直流开关转换器 5V 1A Boost DC-DC PWM 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 |
| NCP1450ASN50T1G | 制造商:ON Semiconductor 功能描述:Power Supply IC |
| NCP1500DMR2 | 功能描述:直流/直流开关转换器 Dual Mode PWM 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 |
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