NCP5008_06 datasheet(1/17 Pages) ONSEMI

Part #	NCP5008

Description	Backlight LED Boost Driver

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Manufacturer	ONSEMI [ON Semiconductor]

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April, 2006 − Rev. 7

1

Publication Order Number:

NCP5008/D

NCP5008, NCP5009

Backlight LED Boost Driver

The NCP5008/NCP5009 is a high efficiency boost converter

operating in current loop control mode to drive Light Emitting

Diode. The current mode regulation allows a uniform brightness of

the LEDs.

Features

• 2.7 to 6.0 V Input Voltage Range

• Output Voltage from Vbat to 15 V

• 3.0 mA Quiescent Supply Current

• Automatically LEDs Current Matching

• No External Sense Resistor

• Includes Dimming Function

• Programmable or Automatic Current Output Mode

• LOCAL or REMOTE Control Facility

• Photo Transistor Sense Feedback Input

• Inductor Based Converter brings High Efficiency

• Low Noise DC/DC Converter

• All Pins are Fully ESD Protected

• Pb−Free Package is Available

Typical Applications

• LED Display Back Light Control

• High Efficiency Step Up Converter

Figure 1. Typical Battery Powered LED Boost Driver

Iref

PHOTO

L2

CS

CLK

1

2

Q1

NPN−PHOTO

GND

4

Vbat

3

5

6

LOCAL

GND

7

4

8

GND

L1

9

Vbat

10

R1

30 k

GND

Vcc

GND

NCP5009

L1

22

mH

Vbat

C1

10

mF/6.3 V

GND

D5 MBR0520

LED

D1

LED

D2

LED

D3

LED

D4

2.2

mF/16 V

C2

GND

U1

VBIAS

Micro 10

DM SUFFIX

CASE 846B

PIN CONNECTIONS

Iref

Vbat

NC

CS

VBIAS

L1

L2 Iout

GND

110

2

3

4

9

8

7

1

5Tx

AYW

G

MARKING

DIAGRAM

5Tx = Device Number

x = 8 or 9

A

= Assembly Location

Y

= Year

W

= Work Week

G

= Pb−Free Package

CLOCK

5

LOCAL

6

Iref

Vbat

Photo

CS

VBIAS

L1

L2 Iout

GND

110

2

3

4

9

8

7

CLOCK

5

LOCAL

6

NCP5008

NCP5009

http://onsemi.com

Device

Package

Shipping†

ORDERING INFORMATION

NCP5008DMR2

Micro 10

4000 / Tape & Reel

NCP5008DMR2G

Micro 10

(Pb−Free)

NCP5009DMR2

Micro 10

†For information on tape and reel specifications,

including part orientation and tape sizes, please

refer to our Tape and Reel Packaging Specifications

Brochure, BRD8011/D.

4000 / Tape & Reel

1

(Note: Microdot may be in either location)

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NCP5008 Datasheet(PDF) 1 Page - ON Semiconductor

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