LTC3214 datasheet(2/12 Pages) LINER

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LTC3214

3214fb

PIN CONFIGURATION

ABSOLUTE MAXIMUM RATINGS

VIN to GND ............................................... –0.3V to 5.5V

CPO to GND ............................................. –0.3V to 5.5V

EN ................................................... –0.3V to VIN + 0.3V

ICPO, IILED (Note 2)...............................................600mA

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

Storage Temperature Range.................. –65°C to 125°C

Operating Temperature Range (Note 3)... –40°C to 85°C

(Note 1)

TOP VIEW

DD PACKAGE

10-LEAD (3mm

3mm) PLASTIC DFN

C1–

GND

C2–

VIN

C2+

C1+

CPO

ILED

ISET

TJMAX = 125°C, θJA = 43°C/W

EXPOSED PAD (PIN 11) IS GND, MUST BE SOLDERED TO PCB

ORDER INFORMATION

LEAD FREE FINISH

TAPE AND REEL

PART MARKING

PACKAGE DESCRIPTION

TEMPERATURE RANGE

LTC3214EDD#PBF

LTC3214EDD#TRPBF

LBVQ

10-Lead (3mm

× 3mm) Plastic DFN

–40°C to 85°C

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

Consult LTC Marketing for information on non-standard lead based ﬁnish parts.

For more information on lead free part marking, go to: http://www.linear.com/leadfree/

For more information on tape and reel speciﬁcations, go to: http://www.linear.com/tapeandreel/

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

temperature range, otherwise speciﬁcations are at TA = 25°C. VIN = 3.6V, CIN = C1 = C2 = 2.2μF, CCPO = 4.7μF.

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

Input Power Supply

VIN Operating Voltage

2.9

4.5

IVIN Operating Current

ICPO = 0mA, 1x Mode

ICPO = 0mA, 1.5x

ICPO = 0mA, 2x Mode

980

4.8

6.7

μA

IVIN Shutdown Current

EN = LOW

2.5

7.5

μA

LED Current

LED Current Ratio (ILED/ISET)ILED = 150mA to 500mA

2715

2950

3190

mA/mA

ILED Dropout Voltage (VILED)

Mode Switch Threshold, ILED = 200mA

Mode Switching Delay (LED Warm-Up Time)

2.5

LED Current On Time

EN to LED Current On

100

μs

Charge Pump (CPO)

Charge Pump Output Clamp Voltage

1x Mode Output Impedance

0.70

1.5x Mode Output Impedance

3.2

2x Mode Output Impedance

3.5

CLK Frequency

VIN = 3V

0.6

0.9

1.2

MHz

CPO Short-Circuit Detection

Threshold Voltage

EN = High

0.5

1.5

Test Current

EN = Low, VCPO = 0V

LTC3214 Datasheet(PDF) 2 Page - Linear Technology

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