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NCP1402 Datasheet, PDF (1/18 Pages) ON Semiconductor – 200 mA, PFM Step-Up Micropower Switching Regulator | |||
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NCP1402
200 mA, PFM StepâUp
Micropower Switching
Regulator
The NCP1402 series are monolithic micropower stepâup DC to DC
converter that are specially designed for powering portable equipment
from one or two cell battery packs.These devices are designed to
startâup with a cell voltage of 0.8 V and operate down to less than
0.3 V. With only three external components, this series allow a simple
means to implement highly efficient converters that are capable of up
to 200 mA of output current at Vin = 2.0 V, VOUT = 3.0 V.
Each device consists of an onâchip PFM (Pulse Frequency
Modulation) oscillator, PFM controller, PFM comparator, softâstart,
voltage reference, feedback resistors, driver, and power MOSFET
switch with current limit protection. Additionally, a chip enable
feature is provided to power down the converter for extended battery
life.
The NCP1402 device series are available in the Thin SOTâ23â5
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
⢠Extremely Low StartâUp Voltage of 0.8 V
⢠Operation Down to Less than 0.3 V
⢠High Efficiency 85% (Vin = 2.0 V, VOUT = 3.0 V, 70 mA)
⢠Low Operating Current of 30 mA (VOUT = 1.9 V)
⢠Output Voltage Accuracy ± 2.5%
⢠Low Converter Ripple with Typical 30 mV
⢠Only Three External Components Are Required
⢠Chip Enable Power Down Capability for Extended Battery Life
⢠Micro Miniature Thin SOTâ23â5 Packages
Typical Applications
⢠Cellular Telephones
⢠Pagers
⢠Personal Digital Assistants (PDA)
⢠Electronic Games
⢠Portable Audio (MP3)
⢠Camcorders
⢠Digital Cameras
⢠Handheld Instruments
http://onsemi.com
5
1
SOT23â5
(TSOPâ5, SC59â5)
SN SUFFIX
CASE 483
PIN CONNECTIONS AND
MARKING DIAGRAM
CE 1
OUT 2
5 LX
NC 3
4 GND
xxx = Marking
Y = Year
W = Work Week
(Top View)
ORDERING INFORMATION
See detailed ordering and shipping information in the ordering
information section on page 3 of this data sheet.
© Semiconductor Components Industries, LLC, 2003
1
November, 2003 â Rev. 5
Publication Order Number:
NCP1402/D
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