LTC3355-1

4

Rev. 0

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l

denotes the specifications which apply over the specified operating

SYMBOL PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

5A Boost Regulator

SW2 Peak Current

4.5

5

5.5

A

NMOS On-Resistance

70

mΩ

NMOS Leakage Current

Boost Disabled

–5

5

µA

DC Max

Boost Maximum Duty Cycle

88

92

98

%

Boost Input Supply Voltage Range

0.75

5

V

Boost Minimum Input Supply

0.5

V

Boost Error Amplifier Voltage Gain

(Note 5)

850

V/V

Boost Error Amplifier Transconductance

27

μS

0.775

0.825

V

200

1000

kΩ

Logic (EN_CHG)

Input Low Logic Voltage

0.4

V

Input High Logic Voltage

1.2

V

Input Low/High Current

-1

1

µA

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 LTC3355-1 is tested under pulsed load conditions such that

0°C to 85°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

LTC3355-1I is guaranteed over the –40°C to 125°C operating junction

temperature range. Note that the maximum ambient temperature

consistent with these specifications is determined by specific operating

conditions in conjunction with board layout, the rated package thermal

impedance and other environmental factors. The junction temperature

Note 3: The LTC3355-1 has a thermal regulation loop that limits the

maximum junction temperature to 110°C by limiting the charger current.

Note 4: The current limit features of this part are intended to protect the

IC from short-term or intermittent fault conditions. Continuous operation

above the maximum specified pin current may result in device degradation

or failure.

Note 5: Guaranteed by design and/or correlation to static test.

Note 6: The LTC3355-1 has a thermal shutdown that will shut down the

part when the die temperature reaches 155°C.