NCP1404 Datasheet, PDF (1/8 Pages) ON Semiconductor – 350 mA PWM/PFM Step-Up DC-DC Converter with Low Battery Detector

NCP1404 Series
Product Preview
350 mA PWM/PFM Step-Up
DC-DC Converter with Low
Battery Detector
The NCP1404 series are monolithic PWM/PFM step–up DC to DC
converters which can automatically change operation mode from
PWM to PFM at light loads to improve efficiency at light loads. With
only four external components, this series allow a simple means to
implement highly efficient converters for powering up portable
equipment up to 350 mA loading.
Additionally, this series is featured with a Low Battery Detector to
monitor battery voltage. The NCP1404 device series are available in
space–saving TSOP–6 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
• Low Start–Up Voltage of 0.8 V
• PWM Oscillator Frequency of 600 kHz at 20% Accuracy
• High Efficiency 85% at I_OUT = 200 mA, V_IN = 2.5 V, V_OUT = 3.3 V
• Output Current up to 350 mA at V_IN = 2.5 V, V_OUT = 3.3 V
• Duty Ratio: 17% to 85% typ. PWM Control
Duty Ratio: 17% typ. PFM Control
• Output Voltage Accuracy ±2.5%
• Low Battery Detection with Open–drain Detector Output
• Separated Power Supply Pin
• Low Profile and Minimum External Parts
• Micro Miniature TSOP–6
Typical Applications
• Digital Cameras
• Cellular Telephones
• Personal Digital Assistants (PDA)
• Camcorders
• Electronic Games
• Pagers
• Portable Audio (MP3)
• Handheld Instruments
http://onsemi.com
6
1
TSOP–6
SN SUFFIX
CASE 318G
PIN CONNECTIONS AND
MARKING DIAGRAM
LBI 1
6 LX
OUT 2
5 LBO
V_DD 3
4 GND
(Top View)
XX = Specific Device Code
d _{= Date Code}
See specific marking information in the ordering information
table on page 3 of this data sheet.
ORDERING INFORMATION
Device
Package
Shipping
NCP1404SN19T1 TSOP–6 3000/Tape & Reel
NCP1404SN27T1 TSOP–6 3000/Tape & Reel
NCP1404SN30T1 TSOP–6 3000/Tape & Reel
NCP1404SN33T1 TSOP–6 3000/Tape & Reel
NCP1404SN50T1 TSOP–6 3000/Tape & Reel
This document contains information on a product under development. ON Semiconductor
reserves the right to change or discontinue this product without notice.
© Semiconductor Components Industries, LLC, 2002
1
June, 2002 – Rev. 0
Publication Order Number:
NCP1404/D