LT3652IDDPBF データシートの表示（PDF） - Linear Technology

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LT3652IDDPBF

Power Tracking 2A Battery Charger for Solar Power

Linear Technology 

LT3652

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

temperature range, otherwise specifications are at TA = 25°C. VIN = 20V, Boost – SW = 4V, SHDN = 2V, VFB = 3.3V, CTIMER = 0.68μF.

SYMBOL

PARAMETER

CONDITIONS

MIN TYP MAX UNITS

tTIMER

Full Charge Cycle Timeout

Precondition Timeout

3

hr

22.5

min

Timer Accuracy

l –10

10

%

fO

Operating Frequency

DC

Duty Cycle Range

Continuous Operation

1

MHz

l 15

90

%

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 LT3652EDD 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

LT3652IDD specifications are guaranteed over the full –40°C to 125°C

operating junction temperature range. High junction temperatures degrade

operating lifetimes.

Note 3: VIN minimum voltages below the start threshold are only

supported if (VBOOST-VSW) > 2V.

Note 4: This parameter is valid for programmed output battery float

voltages ≤ 4.2V. VIN operating range minimum is 0.75V above the

programmed output battery float voltage (VBAT(FLT) + 0.75V). VIN Start

Voltage is 3.3V above the programmed output battery float voltage

(VBAT(FLT) + 3.3V).

Note 5: Output battery float voltage (VBAT(FLT)) programming resistor

divider equivalent resistance = 250k compensates for input bias current.

Note 6: All VFB voltages measured through 250k series resistance.

Note 7: VSENSE(DC) is reduced by thermal foldback as junction temperature

approaches 125°C.

3652fb

4

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