NCP5603GEVB ON Semiconductor, NCP5603GEVB Datasheet

NCP5603GEVB

Manufacturer Part Number

NCP5603GEVB

Description

EVAL BOARD FOR NCP5603G HI FREQ

Manufacturer

ON Semiconductor

Datasheets

1.NCP5603MNR2G.pdf (13 pages)

2.NCP5603GEVB.pdf (1 pages)

3.NCP5603GEVB.pdf (6 pages)

Specifications of NCP5603GEVB

Design Resources

NCP5603 EVB BOM NCP5603GEVB Gerber Files NCP5603 EVB Schematic

Current - Output / Channel

160mA

Outputs And Type

1, Non-Isolated

Voltage - Output

4.5 ~ 5 V

Features

Dimmable

Voltage - Input

3V or 3.6V

Utilized Ic / Part

NCP5603

Core Chip

NCP5603

Topology

Charge Pump

No. Of Outputs

Development Tool Type

Hardware - Eval/Demo Board

Leaded Process Compatible

Yes

Mcu Supported Families

NCP5603

Rohs Compliant

Yes

Lead Free Status / RoHS Status

Lead free / RoHS Compliant

For Use With/related Products

NCP5603G

Other names

NCP5603GEVBOS

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AND8192/D

Charge Pump Based

Multiple LED Driver

Prepared by: Michael Bairanzade

ON Semiconductor

Abstract

system, capable of generating and controlling the power

needed to utilized three features available in modern cellular

phones. In addition to larger displays, with full color

capability, flash and torch features have now been added to

support the embedded camera and the night path finder.

These features are made possible by using an ultra bright

LED powered by standard battery cells.

BASIC CIRCUIT DESCRIPTION

3 V to 4.5 V, depending upon the forward current, a

straightforward connection to a standard battery is not feasible

as depicted Figure 1. A boost structure must be used to make

the power supply voltage compatible with the LED.

December, 2004 − Rev. 0

MB−JUNE 2004

Since the LED have a forward drop voltage ranging from

Semiconductor Components Industries, LLC, 2004

100

This application note describes a multi−functional

2.5

2.0 X

Figure 1. Typical Lithium−Ion Battery Voltage and White LED

Battery Voltage = F(Capacity) @ T

1.5 X

3.5

1.33 X

system creates a special case since the converter must be

capable of driving the wide current load needed for the

different functions. The typical currents used to drive the

LED, summarized in Table 1, range from a low 1 mA to

350 mA when the flash is activated. Moreover, unlike the

xenon photo flash, the LED system must have a relatively

long pulse of light to properly illuminate the scene.

Typically, a xenon pulse has a 1 ms flash duration, the LED

system being in the 100 ms to 200 ms range. Consequently,

the converter must be designed to support such a large

demand.

are under development and drivers for these devices should

be available within a few months.

On the other hand, combining three functions in the same

High powered LED capable to sustaining up to 800 mA

= +20 C

4.5

1.0 X

APPLICATION NOTE

http://onsemi.com

OSRAM − LWY87S @10 mA−3.8 V

CITIZEN− CL590S @20 mA−3.9 V

NICHIA−NECWB205 @20 mA−4.0 V

OSRAM − LWT67C @20 mA−4.1 V

Publication Order Number:

Vout (V)

Vout−3 Cell Alkaline

Vout−Li−ion

Vout−2 cell Alkaline

AND8192/D

Related parts for NCP5603GEVB

NCP5603GEVB Summary of contents

Page 1

... AND8192/D Charge Pump Based Multiple LED Driver Prepared by: Michael Bairanzade ON Semiconductor Abstract This application note describes a multi−functional system, capable of generating and controlling the power needed to utilized three features available in modern cellular phones. In addition to larger displays, with full color capability, flash and torch features have now been added to support the embedded camera and the night path finder ...

Page 2

Table 1. White LED Typical Applications LED OSRAM LWY85S OSRAM – LWT67C OSRAM OSRAM – LWW5SG CITIZEN − CL590S NICHIA−NECWB205 LUMILED Along with the amount of current the converter provides worthwhile to note the thermal behavior of both ...

Page 3

C5 10 mF/ LWG6SC D5 TP1 GOLDEN DRAGON D4 LW67C V out D3 LW67C D2 LW67C D1 LW67C C4 1 mF/6 NCP5603 GND C2 1 mF/6 GND CC 4.7 mF/10 ...

Page 4

AND8192/D TOP Layer BOTTOM Layer Figure 3. Printer Circuit Board GERBER Files (scale 1:1) http://onsemi.com 4 ...

Page 5

The system is powered by two AA cells in series, assembled in a standard battery holder, the operating mode being selected by the S1, S5 and S6 switches. Since the total current is limited by the DC/DC converter, the backlights ...

Page 6

... APEM_CMS PUSH_BUT_B CKSWITCH_V TEST_POINT GND_TEST BPACK2 N. American Technical Support: 800−282−9855 Toll Free USA/Canada Japan: ON Semiconductor, Japan Customer Focus Center 2−9−1 Kamimeguro, Meguro−ku, Tokyo, Japan 153−0051 Phone: 81−3−5773−3850 http://onsemi.com 6 Manufacturer Part Number BOURNS 4605X series ...

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