LT3598(RevA) Просмотр технического описания (PDF) - Linear Technology

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LT3598
(Rev.:RevA)

6-String 30mA LED Driver with 1.5% Current Matching

Linear Technology 

LT3598

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

temperature range, otherwise specifications are at TA = 25°C. VIN = 5V, VSHDN = VIN unless otherwise noted. (Note 2)

PARAMETER

SHDN Pin Current

SHDN Voltage High

SHDN Voltage Low

CONDITIONS

VSHDN = 0V, VIN = 5V

VSHDN = 5V, VIN = 5V

MIN TYP MAX UNITS

0.1

1

μA

30

60

μA

1.6

V

0.4

V

Soft-Start Charging Current

PWM Input High Voltage

VSS = 0.1V

5

10

15

μA

1

V

PWM Input Low Voltage

0.4

V

PWM Pin Bias Current

PWM = 3.3V

0.1

1

μA

SYNC Input High Voltage

1.5

V

SYNC Input Low Voltage

0.4

V

SYNC Pin Bias Current

SYNC = 0V

SYNC = 3.3V

25

50

μA

0.1

1

μA

VO_SW Switch Resistance

1000

Ω

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: The LT3598E is guaranteed to meet performance specifications

from 0°C to 125°C junction temperature. Specifications over the –40°C

to 125°C operating junction temperature range are assured by design,

characterization and correlation with statistical process controls. The

LT3598I is guaranteed over the full –40°C to 125°C operating junction

temperature range.

Note 3: Current flows out of FB pin.

Note 4: Current flows out of CTRL pin.

Note 5: Current limit guaranteed by design and/or correlation to static test.

Current limit is independent of duty cycle and is guaranteed by design.

3598fa

4

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