NCP1450A:1.0 A, 180 kHz PWM Boost Controller with Enable
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 maintain high efficiency at light loads. With only six external components, this series allows a simple means to implement highly 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 range from 1.8 V to 5.0 V in 100 mV steps can be manufactured.
技术特性
- High Efficiency 86% at IO = 200 mA, VIN = 2.0 V, VOUT = 3.0 V
88% at IO = 400 mA, VIN = 3.0 V, VOUT = 5.0 V
- Low Startup Voltage of 0.9 V typical at IO = 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 VIN = 2.0 V, L = 10 H, COUT = 220 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
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应用
- Personal Digital Assistant (PDA)
- Electronic Games
- Portable Audio (MP3)
- Digital Still Cameras
- Handheld Instruments
封装图 PACKAGE DIMENSIONS
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订购信息 Ordering Information
| 产品 |
状况 |
Compliance |
具体说明 |
封装 |
MSL* |
容器 |
预算价格 (1千个数量的单价） |
| 类型 |
外形 |
类型 |
数量 |
| NCP1450ASN19T1G |
Active |
|
1.0 A, 180 kHz PWM Boost Controller with Enable, 1.9 V |
TSOP-5 / SOT-23-5 |
483 |
1 |
Tape and Reel |
3000 |
$0.2667 |
| NCP1450ASN27T1G |
Active |
|
1.0 A, 180 kHz PWM Boost Controller with Enable, 2.7 V |
TSOP-5 / SOT-23-5 |
483 |
1 |
Tape and Reel |
3000 |
$0.2667 |
| NCP1450ASN30T1G |
Active |
|
1.0 A, 180 kHz PWM Boost Controller with Enable, 3.0 V |
TSOP-5 / SOT-23-5 |
483 |
1 |
Tape and Reel |
3000 |
$0.2667 |
| NCP1450ASN33T1G |
Active |
|
1.0 A, 180 kHz PWM Boost Controller with Enable, 3.3 V |
TSOP-5 / SOT-23-5 |
483 |
1 |
Tape and Reel |
3000 |
$0.2667 |
| NCP1450ASN50T1G |
Active |
|
1.0 A, 180 kHz PWM Boost Controller with Enable, 5.0 V |
TSOP-5 / SOT-23-5 |
483 |
1 |
Tape and Reel |
3000 |
$0.2667 |
| NCP1450ASN19T1 |
Last Shipments |
|
1.0 A, 180 kHz PWM Boost Controller with Enable, 1.9 V |
TSOP-5 / SOT-23-5 |
483 |
1 |
Tape and Reel |
3000 |
|
| NCP1450ASN27T1 |
Last Shipments |
|
1.0 A, 180 kHz PWM Boost Controller with Enable, 2.7 V |
TSOP-5 / SOT-23-5 |
483 |
1 |
Tape and Reel |
3000 |
|
| NCP1450ASN30T1 |
Last Shipments |
|
1.0 A, 180 kHz PWM Boost Controller with Enable, 3.0 V |
TSOP-5 / SOT-23-5 |
483 |
1 |
Tape and Reel |
3000 |
|
| NCP1450ASN33T1 |
Last Shipments |
|
1.0 A, 180 kHz PWM Boost Controller with Enable, 3.3 V |
TSOP-5 / SOT-23-5 |
483 |
1 |
Tape and Reel |
3000 |
|
| NCP1450ASN50T1 |
Last Shipments |
|
1.0 A, 180 kHz PWM Boost Controller with Enable, 5.0 V |
TSOP-5 / SOT-23-5 |
483 |
1 |
Tape and Reel |
3000 |
|
数据资料DataSheet下载
