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LTC3214

3214fa

Note 1: Stresses beyond those listed under Absolute Maximum Ratings

may cause permanent damage to the device. Exposure to any Absolute

Maximum Rating condition for extended periods may affect device

reliability and lifetime.

Note 2: Based on long-term current density limitations. Assumes an

operating duty cycle of

≤ 10% under absolute maximum conditions for

durations less than 10 seconds. Max current for continuous operation is

300mA.

Note 3: The LTC3214E is guaranteed to meet performance specifications

from 0

°C to 70°C. Specifications over the –40°C to 85°C ambient

operating temperature range are assured by design, characterization and

correlation with statistical process controls.

TYPICAL PERFOR A CE CHARACTERISTICS

ILED Dropout Voltage

vs LED Current

ILED vs RSET

LED CURRENT (mA)

100

300

200

400

500

3216 G01

0.12

0.10

0.08

0.06

0.04

0.02

TEMPERATURE (

°C)

–40

–15

3216 G03

1.0

0.9

0.8

0.7

0.6

0.5

0.4

–40

–15

TEMPERATURE (

°C)

3216 G05

RSET (kΩ)

1573 G02

600

500

400

300

200

100

200

250

150

300 350

400

VIN = 4.5V

VIN = 2.9V

ICPO = 100mA

VIN = 3.6V

CIN = C1 = C2 = 2.2µF

CCPO = 4.7µF

2x Mode Charge Pump

Open-Loop Output Resistance

(2VIN – VCPO)/ICPO vs Temperature

1x Mode Charge Pump Open-Loop

Output Resistance vs Temperature

(TA = 25°C unless otherwise specified)

ELECTRICAL CHARACTERISTICS The ● 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

ISET

VISET

ISET = 50µA

●

1.18

1.21

1.24

IISET

●

184

µA

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