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03 17LOW CURRENT MULTIDISPLAY LED DRIVERS – INDUCTORLESS

Power Management for LEDs - 23453 Low Current Multidisplay LED Drivers – Inductorless

Our family of inductorless, charge pump-based multidisplay LED drivers feature the highest level of integration, smallest footprint and highest efficiency. Individual display driver outputs eliminate the need for ballast resistors, while the universal topology enables an even higher level of design flexibility without display type restrictions. These ICs optimize designs for a wide range of applications, from general illumination and keypads to portable products such as multidisplay cellular phones and high current/high resolution camera flash devices. Applications:

.

Video Phones with QVGA+ Displays

.

Keyboard Lighting

: Actual Size,Complete Solution

LTC3220/-1: 360mA Universal 18-Channel LED DriverLTC3220/-1

.

General Lighting

C1PV RGB2 RGB3 RGB4 MAIN
IN IN 2.2µF2.2µF2.2µFCPOULED1-18C1M GND C2PC2M

LTC3220LTC3220-1

4.7µFRGB118 DV
CC DV
CC I
2 CRESET0.1µF SCL/SDAV RST

PartNumberV

IN

(V)Conversion Ratio/ Boost FactorTotal LED Current (mA)Max. # of White LEDs x I Display TypesNumber of DisplaysDimming ControlMaximum Operating Effi ciency*** (%)Frequency(MHz)I

Q

(µA)I

SD

(µA)Package

LED

Low Current Multidisplay LED Drivers – Inductorless

LTC32122.7 to 5.51x/2x75

3

++

x25mA

RGB31-wire810.9400<32x3 DFN-12LTC32302.7 to 5.51x/1.5x/2x1255x25mAMain, Sub, + 2 LDOs21-wire910.8400<33x3 QFN-20LTC32192.9 to 5.51x/1.5x/2x2509x28mAUniversalUp to 9I

2

C910.85400<23x3 QFN-20LTC3220LTC3220-1

2 +

2.9 to 5.51x/1.5x/2x36018x20mAUniversalUp to 18I C910.85500<44x4 UTQFN-28LTC32062.8 to 4.51x/1.5x400(5+3+3)x35mAMain, SUB, RGB3SPI*901180<14x4 QFN-24LTC3210/-12.9 to 4.51x/1.5x/2x5004x25mA + 1**x400mAMain, CAM21-wire930.8400<33x3 QFN-16LTC3209-12.9 to 4.51x/1.5x/2x6006x25mA + 1x15mA + 1**x400mAMain, Aux, CAM3I

2

C940.85400<34x4 QFN-20LTC3209-22.9 to 4.51x/1.5x/2x6005x25mA + 1x15mA + 2**x200mAMain, Aux, CAM3I

2

C940.85400<34x4 QFN-20LTC32072.9 to 5.51x/1.5x/2x60012x28mA + 1**x425mAUniversal, CAMUp to 13I

2

C910.85500<24x4 QFN-24LTC32082.9 to 4.51x/1.5x/2x1000(4+2+3+4)x27.5mA + 4x100mAMain, SUB, RGB, Aux, CAM5I

2

C950.85250<15x5 QFN-32

* Serial Peripheral Interface** High Current Camera LED >=200-425mA *** Dependent on V Different I 2 C address ++ Red, Green, Blue LEDs IN , V LED , I LED+ 04109 CS3_LIN_LED_FA_10–7–08.r2.indd 20 04109 CS3_LIN_LED_FA_10–7–08.r2.indd 20 10/24/08 3:44:03 PM 10/24/08 3:44:03 PM