FAN5610 Fairchild Semiconductor, FAN5610 Datasheet

FAN5610

Manufacturer Part Number

FAN5610

Description

LED Driver for White/ Blue or any Color LED

Manufacturer

Fairchild Semiconductor

Datasheet

1.FAN5610.pdf (10 pages)

Available stocks

Company

Part Number

Manufacturer

Quantity

Price

Company:

Meier Automation Equipment Co., Limited

Part Number:

FAN5610MPX

Manufacturer:

FAIRCHILD/仙童

Quantity:

20 000

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Download datasheet (106Kb)

Features

• LED Driver for 4 Parallel-connected LEDs

• Low Voltage Drop (<350mV) to Support Direct Li-ion

• Independent Control Loop for Each LED

• Regulated, Matched Constant Current in LEDs

• No External Components

• No EMI, No Switching Noise

• Built-in DAC for Digital and PWM Brightness Control

• Up to 91% Maximum Efﬁciency

• Up to 84mA (21mA/LED) Bias Current

• 2.7V to 5.5V Input Voltage Range

• I

• 3mmX3mm MLP-8 Package

Applications

• Cell Phones

• Handheld Computers

• PDA, DSC, MP3 Players

• LCD Display Modules

• Keyboard Backlight

• LED Displays

FAN5610

LED Driver for White, Blue or any Color LED

Typical Application

Applications with Low V

< 1µA in Shutdown Mode

LEDs

IN A

IN B

FAN5610

Description

The FAN5610 generates matched current source drives for a

maximum of four LEDs. Since each LED current source has

its own self-regulating loop, precise current matching is

maintained even if there is a substantial forward voltage

spread among the LEDs. LED pre-selection therefore is not

required. In order to minimize voltage drop, and maximize

efﬁciency, the value of the internal current sense resistors

connected in series with the LEDs is very low (10 Ω ). This is

an important consideration for direct DC-driven white LEDs

in battery-powered systems.

The LEDs’ current can be set to 0mA (OFF Mode), 7mA,

14mA, and 21mA with a built-in two-bit digital-to-analog

converter. Customized current settings can also be used.

When the control bits are set to zero, the internal circuitry is

disabled and the quiescent current drops below 1µA.

Both digital input lines (A, B) can be pulse-width-modulated

(PWM). Using PWM, any value of average LED current can

be obtained within the 1 to 20 mA range. The FAN5610 is

available in an 8-lead 3X3 MLP package.

GND

www.fairchildsemi.com

REV. 1.0.2 10/28/03

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