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CD54-470L

ON
Part Number CD54-470L
Manufacturer ON
Description 200 mA/ PFM Step-Up Micropower Switching Regulator
Published Apr 23, 2005
Detailed Description NCP1402 200 mA, PFM Step−Up Micropower Switching Regulator The NCP1402 series are monolithic micropower step−up DC to DC...
Datasheet PDF File CD54-470L PDF File

CD54-470L
CD54-470L


Overview
NCP1402 200 mA, PFM Step−Up Micropower Switching Regulator The NCP1402 series are monolithic micropower step−up DC to DC converter that are specially designed for powering portable equipment from one or two cell battery packs.
These devices are designed to start−up 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 on−chip PFM (Pulse Frequency Modulation) oscillator, PFM controller, PFM comparator, soft−start, 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 SOT−23−5 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 http://onsemi.
com 5 1 SOT23−5 (TSOP−5, SC59−5) SN SUFFIX CASE 483 PIN CONNECTIONS AND MARKING DIAGRAM CE OUT NC 1 xxxYW 2 3 5 LX • • • • • • • • • • • • • • • • • Extremely Low Start−Up 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 SOT−23−5 Packages Cellular Telephones Pagers Personal Digital Assistants (PDA) Electronic Games Portable Audio (MP3) Camcorders Digital Cameras Handheld Instruments 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.
Typical Applications © Semiconductor Co...


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