NCP1406_12 Datasheet, PDF (1/19 Pages) ON Semiconductor – 25 V/25 mA PFM Step-Up DC-DC Converter

NCP1406, NCV1406
25 V/25 mA PFM Step-Up
DC-DC Converter
The NCP1406 is a monolithic step−up DC−DC converter operating
in a Pulse Frequency Modulation (PFM) scheme with constant peak
current control. It integrates a 0.8 A, 0.7 W internal power switch and
sensing resistor to monitor inductor current. This control scheme
maintains high efficiencies over the entire load current range. The
wide input voltage range, from 1.4V to 5.5 V, enables the user to
operate the device from a Li−Ion battery or a two−cell Alkaline
NiMH. Its ability to boost voltages up to 25 V, and to provide 1 W
output power, makes the NCP1406 the perfect solution for biasing
small and large OLED panels. This device also makes a perfect
solution for biasing a great number of white LEDs in series. A Chip
Enable pin allows the user to control the device to extend the battery
life during standby, and can be pulse−width modulated for white
LED applications. The versatility of the NCP1406 allows it to be
configured not only as a step−up converter, but also as an inverter and
as a step−down converter. This solution is proposed in a
space−saving TSOP−5 package.
Features
• 87% Efficiency at V_OUT = 25 V, I_OUT = 25 mA, V_IN = 5 V
• Adjustable Output Voltage up to 25 V
• 0.8 A, 26 V Internal Power Switch
• Operating Input Voltage from 1.4 V to 5.5 V
• Low Startup Voltage of 1.8 V Typical at No Load
• Low Operating Current of 15 mA (Not Switching)
• Low Shutdown Current of 0.3 mA
• Operating Switching Frequency up to 1 MHz
• Output Voltage Soft−Start
• Thermal Shutdown Protection
• These are Pb−Free Devices
• NCV Prefix for Automotive and Other Applications Requiring
Unique Site and Control Change Requirements; AEC−Q100
Qualified and PPAP Capable
Typical Applications
• LCD Bias Supplies
• Small and Large OLED Display Drivers
• White LED Driver for Backlight Displays
• Personal Digital Assistants (PDA)
• Portable Applications:
♦ Cell Phones, Digital Cameras
♦ PDAs, Games, and Portable Video Players
http://onsemi.com
5
1
TSOP−5/SOT23−5/SC59−5
SN SUFFIX
CASE 483
MARKING
DIAGRAM
5
XXX AYW G
G
1
DAM
AET
A
Y
W
G
= Device Marking − NCP1406
= Device Marking − NCV1406
= Assembly Location
= Year
= Work Week
= 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†
NCP1406SNT1G TSOP−5 3000 Tape & Reel
(Pb−Free)
NCV1406SNT1G 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, 2012
1
October, 2012 − Rev. 6
Publication Order Number:
NCP1406/D