NCP1410_05 ONSEMI [ON Semiconductor], NCP1410_05 Datasheet

NCP1410_05

Manufacturer Part Number

NCP1410_05

Description

250 mA Sync-Rect PFM Step-Up DC-DC Converter with Low-Battery Detector

Manufacturer

ONSEMI [ON Semiconductor]

Datasheet

1.NCP1410_05.pdf (14 pages)

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NCP1410

250 mA Sync−Rect PFM

Step−Up DC−DC Converter

with Low−Battery Detector

(step−up) voltage switching converter IC specially designed for

battery operated hand−held electronic products up to 250 mA loading.

It integrates Synchronous Rectifier for improving efficiency as well as

eliminating the external Schottky Diode. High switching frequency

(up to 600 kHz) allows low profile inductor and output capacitor being

used. Low−Battery Detector, Logic−Controlled Shutdown and

Cycle−by−Cycle Current Limit provide value−added features for

various battery−operated applications. With all these functions ON,

the device quiescent supply current is only 9.0 mA typical. This device

is available in space saving compact Micro8t package.

Features

Typical Applications

January, 2005 − Rev. 3

NCP1410 is a monolithic micropower high frequency Boost

Schottky Diode

Size Inductor and Capacitor

supply more than 2.5 mA when V

3.3 V/5.0 V

High Efficiency up to 92%

Very Low Device Quiescent Supply Current of 9.0 mA Typical

Allows use of Small Size Inductor and Capacitor

Built−in Synchronous Rectifier (PFET) Eliminates One External

High Switching Frequency (up to 600 kHz) Allows Use of Small

High Accuracy Reference Output, 1.19 V 0.6% @ 25 C, can

1.0 V Startup at No Load Guaranteed

Output Voltage from 1.5 V to 5.5 V Adjustable

Output Current up to 250 mA @ V

Logic−Controlled Shutdown

Open Drain Low−Battery Detector Output

1.0 A Cycle−by−Cycle Current Limit

Low Profile and Minimum External Parts

Compact Micro8 Package

Pb−Free Package is Available

Personal Digital Assistant (PDA)

Handheld Digital Audio Product

Camcorders and Digital Still Camera

Hand−held Instrument

Conversion from One or Two NiMH or NiCd, or One Li−ion Cell to

Semiconductor Components Industries, LLC, 2005

OUT

= 2.5 V, V

3.3 V

out

= 3.3 V

†For information on tape and reel specifications,

NCP1410DMR2

NCP1410DMR2G

including part orientation and tape sizes, please

refer to our Tape and Reel Packaging Specifications

Brochure, BRD8011/D.

Device

LBO

REF

LBI

ORDERING INFORMATION

PIN CONNECTIONS

A1 = Device Marking

A = Assembly Location

Y = Year

W = Work Week

http://onsemi.com

CASE 846A

DM SUFFIX

(Top View)

(Pb−Free)

Micro8t

Package

Micro8

Publication Order Number:

4000 Tape & Reel

8 OUT

7 LX

6 GND

5 SHDN

MARKING

DIAGRAM

Shipping

NCP1410/D

AYW

†

Related parts for NCP1410_05

NCP1410_05 Summary of contents

Page 1

NCP1410 250 mA Sync−Rect PFM Step−Up DC−DC Converter with Low−Battery Detector NCP1410 is a monolithic micropower high frequency Boost (step−up) voltage switching converter IC specially designed for battery operated hand−held electronic products up to 250 mA loading. It integrates Synchronous ...

Page 2

Input 1 OUT 150 pF 200 k Low Battery Sense Input Low Battery Open Drain Output Shutdown Open Drain Input MAXIMUM RATINGS (Note 1) Rating Device Power Supply (Pin 8) Input/Output Pins (Pin 1−5, Pin 7) Thermal ...

Page 3

ELECTRICAL CHARACTERISTICS unless otherwise noted.) Characteristics Operating Voltage Output Voltage Range (Adjusted by external feedback) Reference Voltage (C = 150 nF, under no loading, T REF Reference Voltage (C = 150 nF, under no loading, −40 C REF Reference Voltage ...

Page 4

V bat SHDN Chip SHDN Enable _ZCUR C SHDN _PWGONCE _CEN PFM 1 + _PFM FB − Voltage _V 4 REFOK Reference REF C REF 2 LBI NCP1410 ZLC + − CONTROL V DD ...

Page 5

TYPICAL OPERATING CHARACTERISTICS 1.212 V = 3.3 V OUT 1.208 = OUT = 1 1.204 REF 1 ...

Page 6

TYPICAL OPERATING CHARACTERISTICS 100 1 3 OUT = OUT ...

Page 7

TYPICAL OPERATING CHARACTERISTICS − 1 3.3 V OUT − OUT −3 1.0 10 OUTPUT LOADING CURRENT, I ...

Page 8

TYPICAL OPERATING CHARACTERISTICS = OUT LOAD = 33 mF) C OUT Upper Trace: Voltage at L pin, 2.0 V/Division X MiddleTrace Otuput Voltage Ripple, ...

Page 9

DETAILED OPERATION DESCRIPTIONS NCP1410 is a monolithic micropower high frequency step−up voltage switching converter IC specially designed for battery operated hand−held electronic products up to 250 mA loading. It integrates Synchronous Rectifier for improving efficiency as well as eliminating the ...

Page 10

Low−Battery Detection A comparator with 30 mV hysteresis is applied to perform the low−battery detection function. When pin 2 (LBI voltage, which can be defined by a resistor divider from the battery voltage, lower than the internal ...

Page 11

Components Placement Power components, i.e. input capacitor, inductor and output capacitor, must be placed as close together as possible. All connecting traces must be short, direct and thick. High current flowing and switching paths must be kept away from the ...

Page 12

GENERAL DESIGN PROCEDURES Switching mode converter design is considered as black magic to most engineers, some complicate empirical formulae are available for reference usage. Those formulae are derived form the assumption that the key components, i.e. power inductor and capacitors ...

Page 13

K PIN 0.08 (0.003) SEATING PLANE −T− 0.038 (0.0015 1.04 8X 0.041 3.20 0.126 0.65 6X 0.0256 *For additional information on our Pb−Free strategy and soldering details, please download ...

Page 14

Micro8 is a trademark of International Rectifier. ON Semiconductor and are registered trademarks of Semiconductor Components Industries, LLC (SCILLC). SCILLC reserves the right to make changes without further notice to any products herein. SCILLC makes no warranty, representation or guarantee ...

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