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FAN5702 データシート(PDF) 1 Page - Fairchild Semiconductor

部品番号 FAN5702
部品情報  Configurable 180mA 6-LED Driver with I2C Control
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メーカー  FAIRCHILD [Fairchild Semiconductor]
ホームページ  http://www.fairchildsemi.com
Logo FAIRCHILD - Fairchild Semiconductor

FAN5702 データシート(HTML) 1 Page - Fairchild Semiconductor

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August 2010
© 2010 Fairchild Semiconductor Corporation
www.fairchildsemi.com
FAN5702 • Rev. 1.0.3
FAN5702
Configurable 180mA 6-LED Driver with I
2C Control
Features
Six (6) Parallel LEDs (up to 30mA Each)
Total Package Load Current Capability: 180mA
Group from 2 to 6 LEDs for Flexible Backlighting
I
2C Interface for Easy Programming
>600:1 Dimming Ratio for 100Hz PWM Frequency
Logarithmically Controlled Dimming with 64 Steps
Secondary Brightness Control Using PWM Dimming
up to 20kHz in Conjunction with I
2C Dimming
− Dynamic Backlight Control (DBC) to Reduce Current
Consumption
Up to 92% Efficiency
Built-in 1.5x Charge Pump with Low Drop-Out Bypass
Switch and automatic switching to 1x mode
1.2MHz Switching Frequency for Small-Sized Capacitors
16-Bump 1.6mm × 1.6mm WLCSP (0.6mm Height)
16-Lead 3.0mm x 3.0mm UMLP (0.55mm Height)
Applications
LCD Backlighting
Mobile Handsets / Smartphones
Portable Media Players
Description
The FAN5702 is a highly integrated and configurable charge-
pump-based multi-LED driver. The device can drive up to six
LEDs in parallel with a total output current of 180mA.
Regulated internal current sinks deliver excellent current and
brightness matching to all LEDs.
The FAN5702 has an I
2C interface that allows the user to
independently control the brightness with a default grouping of
2,1,1,1,1 for a maximum of five independent lighting channels.
The LED driver can be programmed in a multitude of
configurations to address broad lighting requirements for
different platforms. Each LED can be configured through I
2C
as five independent channels (Group A has two LEDs by
default) or any additional LEDs can join Group A to increase
the backlighting needs as the display size increases. The
device offers a second dimming control using the EN/PWM
pin. Applying a PWM dimming signal to this pin allows control
of the dimming of Group A LEDs so that the average current is
the linear value multiplied by the PWM dimming duty-cycle.
The device provides excellent efficiency, without an inductor,
by operating the charge pump in 1.5x or pass-through mode.
The FAN5702 can be ordered with default ISET values of
30mA, 20mA, 15mA, or 8mA. The default ISET is always
determined by the ISET ordered (see Ordering Information).
Ordering Information
Part Number
LED Current
(ISET)
Temperature
Range
Package
Packing
FAN5702UC30X
30mA
-40 to 85°C
WLCSP-16, 0.4mm Pitch
Tape and Reel
FAN5702UC20X
20mA
-40 to 85°C
WLCSP-16, 0.4mm Pitch
Tape and Reel
FAN5702UC15X
15mA
-40 to 85°C
WLCSP-16, 0.4mm Pitch
Tape and Reel
FAN5702UC08X
8mA
-40 to 85°C
WLCSP-16, 0.4mm Pitch
Tape and Reel
FAN5702UMP30X
30mA
-40 to 85°C
UMLP-16, 3.0 x 3.0 x 0.55mm
Tape and Reel
FAN5702UMP20X
20mA
-40 to 85°C
UMLP-16, 3.0 x 3.0 x 0.55mm
Tape and Reel
FAN5702UMP15X
15mA
-40 to 85°C
UMLP-16, 3.0 x 3.0 x 0.55mm
Tape and Reel
FAN5702UMP08X
8mA
-40 to 85°C
UMLP-16, 3.0 x 3.0 x 0.55mm
Tape and Reel


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