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NCP1450ASN50T1 Datasheet

  • NCP1450ASN50T1

  • PWM Step-up DC-DC Controller

  • 205.13KB

  • 24頁

  • ONSEMI

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NCP1450A
PWM Step鈭抲p DC鈭扗C
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
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 PWM (Pulse Width Modulation)
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.
Features
http://onsemi.com
5
1
TSOP-5
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>
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鈥?/div>
88% at I
O
= 400 mA, V
IN
= 3.0 V, V
OUT
= 5.0 V
Low Start-up 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-chip 150 nA Pull-up Current Source
Low Profile and Micro Miniature TSOP-5 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
漏
Semiconductor Components Industries, LLC, 2003
1
April, 2003 - Rev. 5
Publication Order Number:
NCP1450A/D

NCP1450ASN50T1 產品屬性

  • 3,000

  • 集成電路 (IC)

  • PMIC - 穩(wěn)壓器 - DC DC 切換控制器

  • -

  • 電壓模式

  • 1

  • 216kHz

  • 90%

  • 0.6 V ~ 5.5 V

  • 無

  • 是

  • 無

  • 無

  • 無

  • 無

  • 無

  • 無

  • -40°C ~ 85°C

  • 6-TSOP（0.059"，1.50mm 寬）5 引線

  • 帶卷 (TR)

  • NCP1450ASN50TOSTR

NCP1450ASN50T1相關型號PDF文件下載

  • 型號
    版本
    描述
    廠商
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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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