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NCP1450A/D Datasheet

  • NCP1450A/D

  • PWM Step-up DC-DC Controller

  • 207.83KB

  • 24頁

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NCP1450A
Advance Information
PWM Step-up DC-DC
Controller
The NCP1450A series are PWM step鈥搖p DC鈥揇C 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鈥搑esistance
external power transistor to the EXT pin. With only five external
components, this series allows a simple means to implement highly
efficient converter for large output current applications.
Each device consists of an on鈥揷hip PWM (Pulse Width Modulation)
oscillator, PWM controller, phase鈥揷ompensated error amplifier,
soft鈥搒tart, 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鈥? 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
http://onsemi.com
5
1
TSOP鈥?
SN SUFFIX
CASE 483
PIN CONNECTIONS AND
MARKING DIAGRAM
CE
OUT
NC
1
xxxYW
2
3
5
EXT
鈥?/div>
High Efficiency 86% at I
O
= 200 mA, V
IN
= 2.0 V, V
OUT
= 3.0 V
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
88% at I
O
= 400 mA, V
IN
= 3.0 V, V
OUT
= 5.0 V
Low Start鈥搖p 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
鹵
2.5%
Low Conversion Ripple
High Output Current up to 1000 mA
(3.0 V version at V
IN
= 2.0 V, L = 10
mH,
C
OUT
= 220
mF)
Fixed Frequency Pulse Width Modulation (PWM) at 180 kHz
Chip Enable Pin with On鈥揷hip Pull鈥搖p Resistor
Low Profile and Micro Miniature TSOP鈥? Package
Personal Digital Assistant (PDA)
Electronic Games
Portable Audio (MP3)
Digital Still Cameras
Handheld Instruments
4
GND
xxx = Marking
Y
= Year
W = Work Week
(Top View)
ORDERING INFORMATION
See detailed ordering and shipping information in the ordering
information section on page 3 of this data sheet.
Typical Applications
This document contains information on a new product. Specifications and information
herein are subject to change without notice.
漏
Semiconductor Components Industries, LLC, 2001
1
June, 2001 鈥?Rev. 0
Publication Order Number:
NCP1450A/D

NCP1450A/D相關(guān)型號PDF文件下載

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    版本
    描述
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  • 英文版
    Sub 1.0 V Precision Adjustable Shunt Regulator
    ONSEMI
  • 英文版
    Sub 1.0 V Precision Adjustable Shunt Regulator
    ONSEMI [ON...
  • 英文版
    Self-Supplied Monolithic Switcher for Low Standby-Power Offl...
    ON SEMICONDUCTOR
  • 英文版
    Integrated Off-Line Switching Regulator
    ONSEMI
  • 英文版
    Integrated Off-Line Switching Regulator
    ONSEMI [ON...
  • 英文版
    Integrated Off-Line Switching Regulator
    ONSEMI
  • 英文版
    Integrated Off-Line Switching Regulator
    ONSEMI [ON...
  • 英文版
    Integrated Off-Line Switching Regulator
    ONSEMI
  • 英文版
    Integrated Off-Line Switching Regulator
    ONSEMI [ON...
  • 英文版
    Self-Supplied Monolithic Switcher for Low Standby- Power Off...
    ONSEMI
  • 英文版
    Self-Supplied Monolithic Switcher for Low Standby- Power Off...
    ONSEMI [ON...
  • 英文版
    Self-Supplied Monolithic Switcher for Low Standby- Power Off...
    ONSEMI
  • 英文版
    Self-Supplied Monolithic Switcher for Low Standby- Power Off...
    ONSEMI [ON...
  • 英文版
    Self-Supplied Monolithic Switcher for Low Standby- Power Off...
    ONSEMI
  • 英文版
    Self-Supplied Monolithic Switcher for Low Standby- Power Off...
    ONSEMI [ON...
  • 英文版
    Self-Supplied Monolithic Switcher for Low Standby- Power Off...
    ONSEMI
  • 英文版
    Self-Supplied Monolithic Switcher for Low Standby- Power Off...
    ONSEMI [ON...
  • 英文版
    Self-Supplied Monolithic Switcher for Low Standby- Power Off...
    ONSEMI
  • 英文版
    Self-Supplied Monolithic Switcher for Low Standby- Power Off...
    ONSEMI [ON...
  • 英文版
    Self-Supplied Monolithic Switcher for Low Standby- Power Off...
    ONSEMI [ON Semi...

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