LTC3208EUH Linear Technology, LTC3208EUH Datasheet

LTC3208EUH

Manufacturer Part Number

LTC3208EUH

Description

IC,Laser Diode/LED Driver,CMOS,LLCC,32PIN,PLASTIC

Manufacturer

Linear Technology

Datasheets

1.LTC3208EUH-TRPBF.pdf (24 pages)

2.LTC3208EUH.pdf (24 pages)

Available stocks

Company

Part Number

Manufacturer

Quantity

Price

Company:

Bonase Electronics (HK) Co., Limited

Part Number:

LTC3208EUH

Manufacturer:

Quantity:

10 000

Company:

Bonase Electronics (HK) Co., Limited

Part Number:

LTC3208EUH#PBF

Manufacturer:

Quantity:

3 993

Company:

Meier Automation Equipment Co., Limited

Part Number:

LTC3208EUH#PBF

Manufacturer:

LINEAR/凌特

Quantity:

20 000

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APPLICATIO S

FEATURES

■

trademarks are the property of their respective owners. Protected by U.S. Patents including

6411531.

TYPICAL APPLICATIO

ENABLE DISABLE

, LTC and LT are registered trademarks of Linear Technology Corporation. All other

1x/1.5x/2x Charge Pump Provides Up to 95%

Efﬁ ciency

Up to 1A Total Output Current

17 Current Sources Available as MAIN, SUB, RGB,

CAM and AUX LED Drivers

LED ON/OFF, Brightness Level and Display

Conﬁ guration Programmable Using 2-Wire I

Interface

Low Noise Constant Frequency Operation with Flying

Capacitor Edge Rate Control

Automatic Charge Pump Mode Switching

Internal Soft-Start Limits Inrush Current During

Startup and Mode Switching

Open/Shorted LED Protection

Short-Circuit/Thermal Protection

256 Brightness States for MAIN and SUB Displays

4096 Color Combinations for the RGB Display

5mm × 5mm 32-Lead QFN Plastic Package

Video/Camera Phones with QVGA + Displays

4.7 F

BAT

LOW HI

24.3k

C1P C1M C2P C2M

SCL/SDA

ENRGBS

CAMHL

REF

BAT1,2,3

2.2 F

LTC3208

MAIN1-4

2.2 F

CAM1-4

SUB1-2

AUX1-4

GND

CPO

RGB

4.7 F

MAIN

SUB

C™

CAMERA

DESCRIPTIO

The LTC

controller. The part contains a 1A high efﬁ ciency, low noise

charge pump to provide power to the MAIN, SUB, RGB, CAM

and AUX LED displays. The LTC3208 requires only small

ceramic capacitors and one current set resistor to form a

complete LED power supply and current controller.

The maximum display currents are set by a single ex-

ternal resistor. Current for each LED is controlled by a

precision internal current source. Dimming and On/Off

for all displays is achieved via the I

256 brightness levels are available for the MAIN and SUB

displays. 16 levels are available for the RGB and CAM

displays. Four AUX current sources can be independently

assigned via the I

DAC controlled displays.

The LTC3208 charge pump optimizes efﬁ ciency based

on the voltage across the LED current sources. The part

powers up in 1x mode and will automatically switch to

boost mode whenever any enabled LED current source

begins to enter dropout. The ﬁ rst dropout switches the

part into 1.5x mode and a subsequent dropout switches

the LTC3208 into 2x mode. The part is available in a small

5mm × 5mm 32-lead QFN package.

Conﬁ gurable Multidisplay

RGB

High Current Software

3208 is a highly integrated multidisplay LED

AUX

C port to the CAM, SUB, MAIN or AUX

3208 TA01a

LED Controller

100

3.0

4 LEDs AT 15mA/LED

(TYP V

Efﬁ ciency vs Input Voltage

= 25°C

3.2

4-LED MAIN Display

AT 15mA = 3.2V)

C serial interface.

3.4

LTC3208

3.6

BAT

(V)

3.8

4.0

4.2

3208fa

3208 TA01b

4.4

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