NCP1406 Datasheet, PDF (1/23 Pages) ON Semiconductor – 25 V/25 mA PFM Step−Up DC−DC Converter

NCP1406
25 V/25 mA PFM Step−Up
DC−DC Converter
The NCP1406 is a monolithic PFM step−up DC−DC converter.
This device is designed to boost single Lithium or two cells AA/AAA
battery voltage up to 25 V (with internal MOSFET) output for
handheld applications. A pullup Chip Enable feature is built−in with
this device to extend battery−operating life. In addition to standard
boost converter topologies, this device can be configured for
voltage−inverting and step−down applications. This device is
available in space−saving TSOP−5 package. With its small footprint,
the device is also ideal for generating a boosted voltage from a 3.3 V
or 5.0 V power rail.
Features
• 85% Efficiency at V_OUT = 25 V, I_OUT = 25 mA, V_IN = 5.0 V
• Low Operating Current of 15 mA (Not Switching)
• Low Shutdown Current of 0.3 mA
• Low Startup Voltage of 1.8 V Typical at 0 mA
• Output Voltage up to 25 V with Built−in 26 V MOSFET Switch
• PFM Switching Frequency up to 1.0 MHz
• Chip Enable
• Output Voltage Soft−Start
• Feedback Pin Open/Short Circuit Protection
• Input Undervoltage Lockout
• Thermal Shutdown
• Low Profile and Minimum External Parts
• Micro Miniature TSOP−5 Package
• Pb−Free Package is Available
Typical Applications
• LCD Bias
• White LED Driver
• OLED Driver
• Personal Digital Assistants (PDA)
• Digital Still Camera
• Cellular Telephone
• Hand−Held Games
• Hand−Held Instrument
http://onsemi.com
5
1
TSOP−5/SOT23−5/SC59−5
SN SUFFIX
CASE 483
MARKING
DIAGRAM
5
DAMAYWG
G
1
DAM = Device Marking
A = Assembly Location
Y = Year
W = Work Week
G = Pb−Free Package
(Note: Microdot may be in either location)
PIN CONNECTIONS
CE 1
5 LX
FB 2
VDD 3
4 GND
(Top View)
ORDERING INFORMATION
Device
Package
Shipping†
NCP1406SNT1 TSOP−5 3000 Tape & Reel
NCP1406SNT1G TSOP−5 3000 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 Specification
Brochure, BRD8011/D.
© Semiconductor Components Industries, LLC, 2006
1
February, 2006 − Rev. 2
Publication Order Number:
NCP1406/D