LTC3205 datasheet(2/16 Pages) LINER

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LTC3205

3205f

VIN, DVCC, CPO to GND............................. – 0.3V TO 6V

DIN, SCLK, LD, STEPUP,

ENRGB ...................................... – 0.3V to (DVCC + 0.3V)

ICPO (Note 4)...................................................... 250mA

IMAIN1-4, ISUB1,2 (Note 4) ..................................... 50mA

IRED,GREEN,BLUE (Note 4) ..................................... 100mA

IMS, IRGB (Note 4) .................................................. 1mA

CPO Short-Circuit Duration ............................ Indefinite

Operating Temperature Range (Note 2) .. – 40

°C to 85°C

Storage Temperature Range ................. – 65

°C to 125°C

ORDER PART

NUMBER

Consult LTC Marketing for parts specified with wider operating temperature ranges.

LTC3205EUF

ABSOLUTE

AXI U

RATI GS

PACKAGE/ORDER I FOR ATIO

(Note 1)

ELECTRICAL CHARACTERISTICS The q denotes the specifications which apply over the full operating

temperature range, otherwise specifications are at TA = 25°C. VIN = 3.6V, DVCC = 1.8V unless otherwise noted.

TJMAX = 150°C, θJA = 37°C/W, θJC = 2°C/W

EXPOSED PAD IS PGND (PIN 25)

MUST BE SOLDERED TO PCB

24 23 22 21 20 19

TOP VIEW

UF PACKAGE

24-LEAD (4mm

× 4mm) PLASTIC QFN

10 11 12

MAIN2

MAIN1

C2–

C1–

C1+

C2+

RED

SGND

VIN

CPO

IMS

IRGB

UF PART

MARKING

3205

SYMBOL PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

Input Power Supply

VIN Operating Voltage

2.8

4.5

DVCC Operating Voltage

1.5

5.5

IVIN Operating Current

ICPO, IMS, IIRGB = 0µA, Step-Down Mode

µA

ICPO = 0µA, Step-Up Mode

4.2

IDVCC Operating Current

Serial Port Idle

µA

VIN Shutdown Current

µA

DVCC Shutdown Current

µA

White LED Current (MAIN1-MAIN4, SUB1, SUB2)

IMS Servo Voltage

µA < IMS < 75µA

1.193

1.223

1.253

1.175

1.223

1.271

Full-Scale LED Current Ratio (ILED/IMS)

MAIN1-MAIN4, SUB1, SUB2 Voltage = 1V

368

400

432

mA/mA

Half-Scale LED Current Ratio (ILED/IMS)

MAIN1-MAIN4, SUB1, SUB2 Voltage = 1V

184

200

216

mA/mA

Quarter-Scale LED Current Ratio (ILED/IMS) MAIN1-MAIN4, SUB1, SUB2 Voltage = 1V

100

108

mA/mA

LED Current Matching

Any Two MAIN or SUB Outputs

0.7

RGB LED Current (RED, GREEN, BLUE)

IRGB Servo Voltage

µA < IRGB < 75µA

1.193

1.223

1.253

1.175

1.223

1.271

LED Current Ratio (ILED/IRGB)

RED, GREEN, BLUE Voltage = 1V

360

400

440

mA/mA

RGB PWM Frequency

RGB LED Switching Frequency

3.5

kHz

RGB PWM (Duty Factor) Range

0/15

15/15

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