FAN5606DMPX Fairchild Semiconductor, FAN5606DMPX Datasheet

FAN5606DMPX

Manufacturer Part Number

FAN5606DMPX

Description

IC LED DRIVER WHITE BCKLGT 8-MLP

Manufacturer

Fairchild Semiconductor

Type

Backlight, White LED (Serial Interface)r

Datasheet

1.FAN5606DMPX.pdf (9 pages)

Specifications of FAN5606DMPX

Constant Current

Yes

Topology

PWM, Step-Up (Boost)

Number Of Outputs

Internal Driver

Yes

Type - Primary

Backlight

Type - Secondary

White LED

Frequency

500kHz

Voltage - Supply

2.7 V ~ 5 V

Voltage - Output

18V

Mounting Type

Surface Mount

Package / Case

8-MLP

Operating Temperature

-40°C ~ 85°C

Current - Output / Channel

20mA

Internal Switch(s)

Yes

Efficiency

90%

Number Of Segments

Operating Supply Voltage

2.7 V to 5.5 V

Maximum Operating Temperature

+ 85 C

Mounting Style

SMD/SMT

Minimum Operating Temperature

- 40 C

Lead Free Status / RoHS Status

Lead free / RoHS Compliant

Other names

FAN5606DMPXTR
FAN5606DMPX_NL
FAN5606DMPX_NLTR
FAN5606DMPX_NLTR

Current page: 1 of 9
Download datasheet (113Kb)

FAN5606

Serial LED Driver with Current-Regulated, Step-Up

DC/DC Converter

Features

• Drives Up to Six LEDs in Series

• Pulse Skip PWM Mode of Operation of the Boost Circuit

• Up to 90% Peak Efﬁciency

• No External Schottky Diode Required

• Up to 25mA Output

• Built-in DAC for Digital Brightness Control

• LED’s Current Can be Duty-Cycle-Modulated

• Digital, Analog, and PWM Brightness Control

• 2.7V to 5.5V Input Voltage Range

• 0.5MHz Operating Frequency (8MHz internal clock)

• Soft Start

• Low Shutdown Current: I

• LED Short Circuit Protection

• Minimal External Components Needed

• Available in an 8-lead MLP Package

Applications

• Cell Phones

• Handheld Computers

• PDAs, DSCs, MP3 Players

• Keyboard Backlights

• LED Display

Typical Applications

2.7V to 5.5V

External

L = 6.8µH

Analog Brightness Control

IND

OUT

< 1

GND

CAT

4.7µF

OUT

2.7V to 5.5V

Description

The FAN5606 LED driver generates regulated output cur-

rents from a battery with input voltage varying between 2.7V

to 5V. An internal NMOS switch drives an external inductor,

and a Schottky diode delivers the inductor’s stored energy to

the load. Soft start circuitry prevents excessive current drawn

from the supply during power on. Any number of LEDs can

be connected in series as long as the summed forward volt-

ages do not lead to exceeding the speciﬁed operating output

voltage range.

In the FAN5606 device, the internal two-bit D/A converters

provide programmability of the output channel current.

Analog programming of the output current is also possible

in the FAN5606. To do this, ground the “B” pin and connect

a resistor between the “A” pin and a ﬁxed supply voltage.

The output current can then be programmed to any desired

value within its speciﬁed range. The analog version uses a

single external resistor to set the current, and to turn the

device ON and OFF. The device is available in an 8-lead

MLP package.

DAC Inputs

L = 6.8µH

Digital Brightness Control

IND

www.fairchildsemi.com

GND

CAT

4.7µF

REV. 1.0.3 1/7/05

OUT

Related parts for FAN5606DMPX

FAN5606DMPX Summary of contents

Page 1

FAN5606 Serial LED Driver with Current-Regulated, Step-Up DC/DC Converter Features • Drives Up to Six LEDs in Series • Pulse Skip PWM Mode of Operation of the Boost Circuit • 90% Peak Efﬁciency • No External Schottky Diode ...

Page 2

FAN5606 Pin Assignment Pin Descriptions Pin No. Pin Name Pin Function Description 1 A DAC A Input 2 B DAC B Input 3 CAT LED Cathode 4 IND Inductor 5 V Output LED’s Anode OUT 6 GND Ground 7 NC ...

Page 3

PRODUCT SPECIFICATION Absolute Maximum Ratings Parameter Voltage to GND CAT Voltage to GND OUT Any LED Short Circuit Duration (Anode to Cathode) Lead Soldering Temperature (10 seconds) Thermal Resistance θ jc Operating Junction ...

Page 4

FAN5606 Block Diagram DAC A GND Circuit Description When the input voltage is connected to V turned on, the bandgap reference acquires its nominal volt- age and the soft-start cycle begins. Once "power good" is achieved (0.5mA ...

Page 5

PRODUCT SPECIFICATION Where V = 1.22V Ref 25 R=10Kohm 1.25 1.5 1.75 2 2.25 2.5 V External If the analog input A is driven in digital mode by an open drain output important ...

Page 6

FAN5606 PWM Control (Continued and B are PWM. I (Average) = LED A Input (PWM) B Input (PWM) LED CURRENT 0mA Notes: 4. Proportionally select the duty cycle to achieve a typical LED current between 1mA to 4mA. ...

Page 7

PRODUCT SPECIFICATION Typical Performance Characteristics ° 47µ 4.7µ 6.8µH, unless otherwise noted OUT Regulated LED Current vs Input Voltage 5.4 5.2 5.0 4.8 A=1, B=0 Scale1 A=0, B=1 Scale2 ...

Page 8

FAN5606 Mechanical Dimensions 3x3mm 8-Lead MLP (Internal Schottky Diode) 0. 0.8 MAX 0.10 C 0.08 C 0.05 0.00 SEATING PLANE PIN #1 IDENT 0.45 0.43 0.65 NOTES: A. CONFORMS TO JEDEC REGISTRATION MO-229, VARIATION VEEC, DATED 11/2001 B. ...

Page 9

... Order Code FAN5606DMPX 2. A critical component in any component of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system affect its safety or effectiveness. ...

Related keywords

fan5646
fan5608
fan5614
fan5613mpx
fan5607hmpx
fan5607
fan5606dmpx
fan5606
FAN5606DMPX datasheet
FAN5606DMPX data sheet
FAN5606DMPX pdf datasheet
FAN5606DMPX component
FAN5606DMPX part
FAN5606DMPX distributor
FAN5606DMPX RoHS
FAN5606DMPX datasheet download