LTC3620 datasheet(3/16 Pages) LINER

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LTC3620

3620f

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: TJ is calculated from the ambient temperature, TA, and power

dissipation, PD, according to the following formula:

TJ = TA + (PD)(88.5°C/W)

Note 3: The LTC3620 is tested in a proprietary test mode that connects VFB

to the output of the error ampliﬁer.

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

junction temperature range, otherwise speciﬁcations are at TA = 25°C. VIN = 3.6V unless otherwise noted.

SYMBOL

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

VFMIN

FMIN/MODE Input Voltage High

0.9

FMIN/MODE Input Voltage Low

0.7

fEXT

FMIN/MODE Input Frequency

300

kHz

IFMIN/MODE

FMIN/MODE Pin Leakage Current

±0.01

±1

μA

ISW

Switch Leakage Current

VRUN = 0V, VSW = 0V or 5.5V, VIN = 5.5V

±0.01

±1

μA

IFB

VFB Pin Current

LTC3620, VFB = 0.6V

LTC3620-1, VFB = 1.1V

1.2

±30

2.0

μA

VUVLO

Undervoltage Lockout (UVLO)

VIN Decreasing

2.7

2.8

2.9

VLOBATB

LOBATB Threshold

VIN Decreasing

2.93

3.0

3.08

RLOBATB

LOBATB Pull-Down On-Resistance

VHLOBATB

LOBATB Hysteresis

100

RPFET

RDS(ON) of P-channel FET (Note 5)

ISW = 50mA, VIN = 3.6V

2.0

RNFET

RDS(ON) of N-channel FET (Note 5)

ISW = –50mA, VIN = 3.6V

1.0

Note 4: The LTC3620E is guaranteed to meet performance speciﬁcations

from 0°C to 85°C junction temperature. Speciﬁcations over the –40°C

to 85°C operating junction temperature range are assured by design,

characterization and correlation with statistical process controls.

Note 5: The DFN switch-on resistance is guaranteed by correlation to

wafer level measurements.

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