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.
http://onsemi.com
MARKING
DIAGRAM
5
5
1
DAMAYWG
G
TSOP−5/SOT23−5/SC59−5
SN SUFFIX
1
Features
CASE 483
• 85% Efficiency at V
= 25 V, I
= 25 mA, V = 5.0 V
OUT IN
OUT
• 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
DAM = Device Marking
A
Y
W
G
= Assembly Location
= Year
= Work Week
= Pb−Free Package
(Note: Microdot may be in either location)
• Output Voltage Soft−Start
PIN CONNECTIONS
• 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
CE
FB
5
LX
1
2
3
VDD
4
GND
(Top View)
Typical Applications
• LCD Bias
ORDERING INFORMATION
• White LED Driver
• OLED Driver
• Personal Digital Assistants (PDA)
• Digital Still Camera
• Cellular Telephone
• Hand−Held Games
• Hand−Held Instrument
Device
Package
Shipping†
NCP1406SNT1
TSOP−5
3000 Tape & Reel
3000 Tape & Reel
NCP1406SNT1G
TSOP−5
(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
Publication Order Number:
February, 2006 − Rev. 2
NCP1406/D