NCP1410_05 Datasheet, PDF (1/14 Pages) ON Semiconductor – 250 mA Sync-Rect PFM Step-Up DC-DC Converter with Low-Battery Detector

NCP1410
250 mA Sync−Rect PFM
Step−Up DC−DC Converter
with Low−Battery Detector
NCP1410 is a monolithic micropower high frequency Boost
(step−up) voltage switching converter IC specially designed for
battery operated hand−held electronic products up to 250 mA loading.
It integrates Synchronous Rectifier for improving efficiency as well as
eliminating the external Schottky Diode. High switching frequency
(up to 600 kHz) allows low profile inductor and output capacitor being
used. Low−Battery Detector, Logic−Controlled Shutdown and
Cycle−by−Cycle Current Limit provide value−added features for
various battery−operated applications. With all these functions ON,
the device quiescent supply current is only 9.0 mA typical. This device
is available in space saving compact Micro8t package.
Features
• High Efficiency up to 92%
• Very Low Device Quiescent Supply Current of 9.0 mA Typical
• Allows use of Small Size Inductor and Capacitor
• Built−in Synchronous Rectifier (PFET) Eliminates One External
Schottky Diode
• High Switching Frequency (up to 600 kHz) Allows Use of Small
Size Inductor and Capacitor
• High Accuracy Reference Output, 1.19 V ± 0.6% @ 25°C, can
supply more than 2.5 mA when V_OUT ≥ 3.3 V
• 1.0 V Startup at No Load Guaranteed
• Output Voltage from 1.5 V to 5.5 V Adjustable
• Output Current up to 250 mA @ V_in = 2.5 V, V_out = 3.3 V
• Logic−Controlled Shutdown
• Open Drain Low−Battery Detector Output
• 1.0 A Cycle−by−Cycle Current Limit
• Low Profile and Minimum External Parts
• Compact Micro8 Package
• Pb−Free Package is Available
Typical Applications
• Personal Digital Assistant (PDA)
• Handheld Digital Audio Product
• Camcorders and Digital Still Camera
• Hand−held Instrument
• Conversion from One or Two NiMH or NiCd, or One Li−ion Cell to
3.3 V/5.0 V
http://onsemi.com
8
1
Micro8t
DM SUFFIX
CASE 846A
MARKING
DIAGRAM
8
A1
AYW
1
A1 = Device Marking
A = Assembly Location
Y = Year
W = Work Week
PIN CONNECTIONS
FB 1
LBI 2
LBO 3
REF 4
8 OUT
7 LX
6 GND
5 SHDN
(Top View)
ORDERING INFORMATION
Device
Package
Shipping^†
NCP1410DMR2
Micro8 4000 Tape & Reel
NCP1410DMR2G Micro8 4000 Tape & Reel
(Pb−Free)
†For information on tape and reel specifications,
including part orientation and tape sizes, please
refer to our Tape and Reel Packaging Specifications
Brochure, BRD8011/D.
© Semiconductor Components Industries, LLC, 2005
1
January, 2005 − Rev. 3
Publication Order Number:
NCP1410/D