參數(shù)資料
型號(hào)： NCP1450ASN27T1G
廠商： ON SEMICONDUCTOR
元件分類： 穩(wěn)壓器
英文描述： PWM Step−up DC−DC Controller
中文描述： 0.15 A SWITCHING CONTROLLER, 216 kHz SWITCHING FREQ-MAX, PDSO5
封裝： TSOP-5
文件頁(yè)數(shù)： 1/22頁(yè)
文件大?。?/td> 230K
代理商： NCP1450ASN27T1G
Semiconductor Components Industries, LLC, 2005
December, 2005 Rev. 7
1
Publication Order Number:
NCP1450A/D
NCP1450A
PWM Stepup DCDC
Controller
The NCP1450A series are PWM stepup DCDC 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 ONresistance
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 onchip Pulse Width Modulation (PWM)
oscillator, PWM controller, phasecompensated error amplifier,
softstart, 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 TSOP5 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.
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 H, C
OUT
= 220
F)
Fixed Frequency Pulse Width Modulation (PWM) at 180 kHz
Chip Enable Pin with Onchip 150 nA Pullup Current Source
Low Profile and Micro Miniature TSOP5 Package
PbFree Packages are Available
Typical Applications
Personal Digital Assistant (PDA)
Electronic Games
Portable Audio (MP3)
Digital Still Cameras
Handheld Instruments
TSOP5
SN SUFFIX
CASE 483
See detailed ordering and shipping information in the ordering
information section on page 3 of this data sheet.
ORDERING INFORMATION
MARKING DIAGRAM AND
PIN CONNECTIONS
1
3
GND
CE
2
OUT
NC
4
EXT
5
(Top View)
xxx =Specific Device Marking
A
= Assembly Location
Y
= Year
W
= Work Week
= PbFree Package
(Note: Microdot may be in either location)
1
5
http://onsemi.com
x
相關(guān)PDF資料
PDF描述
NCP1450ASN30T1G PWM Step−up DC−DC Controller
NCP1450ASN33T1G PWM Step−up DC−DC Controller
NCP1450ASN50T1G PWM Step−up DC−DC Controller
NCP1450ASN30T1 PWM Step-up DC-DC Controller
NCP1450A PWM Step-up DC-DC Controller
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
NCP1450ASN30T1 功能描述:直流/直流開關(guān)轉(zhuǎn)換器 3V 1A Boost DC-DC RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開關(guān)頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數(shù)量:2 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT
NCP1450ASN30T1G 功能描述:直流/直流開關(guān)轉(zhuǎn)換器 3V 1A Boost DC-DC PWM RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開關(guān)頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數(shù)量:2 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT
NCP1450ASN33T1 功能描述:直流/直流開關(guān)轉(zhuǎn)換器 3.3V 1A Boost DC-DC RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開關(guān)頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數(shù)量:2 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT
NCP1450ASN33T1G 功能描述:直流/直流開關(guān)轉(zhuǎn)換器 3.3V 1A Boost DC-DC PWM RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開關(guān)頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數(shù)量:2 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT
NCP1450ASN50T1 功能描述:直流/直流開關(guān)轉(zhuǎn)換器 5V 1A Boost DC-DC RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開關(guān)頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數(shù)量:2 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT
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