LTC3813 datasheet(4/32 Pages) LINER

4 / 32 page

LTC3813

3813fb

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 LTC3813E is guaranteed to meet performance speciﬁcations

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

temperature range are assured by design, characterization and correlation

with statistical process controls. The LTC3813I is guaranteed to meet

performance speciﬁcations over the full –40°C to 125°C operating

temperature range.

Note 3: TJ is calculated from the ambient temperature TA and power

dissipation PD according to the following formula:

LTC3813: TJ = TA + (PD • 100°C/W)

SYMBOL

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

IPGOOD

PGOOD Leakage Current

VPGOOD = 5V

μA

PG Delay

PGOOD Delay

VFB Falling

125

μs

VCC Regulators

VEXTVCC

EXTVCC Switchover Voltage

EXTVCC Rising

EXTVCC Hysteresis

6.4

0.1

6.7

0.25

0.5

VINTVCC,1

INTVCC Voltage from EXTVCC

10.5V < VEXTVCC < 15V

9.4

10.6

ΔVEXTVCC,1

VEXTVCC - VINTVCC at Dropout

ICC = 20mA, VEXTVCC = 9.1V

170

250

ΔVLOADREG,1

INTVCC Load Regulation from EXTVCC

ICC = 0mA to 20mA, VEXTVCC = 12V

0.01

VINTVCC,2

INTVCC Voltage from NDRV Regulator

Linear Regulator in Operation

9.4

10.6

ΔVLOADREG,2

INTVCC Load Regulation from NDRV

ICC = 0mA to 20mA, VEXTVCC = 0

0.01

INDRV

Current into NDRV Pin

VNDRV – VINTVCC = 3V

μA

VCCSR

Maximum Supply Voltage

Trickle Charger Shunt Regulator

ICCSR

Maximum Current into NDRV/INTVCC

Trickle Charger Shunt Regulator,

INTVCC ≤ 16.7V (Note 8)

The

l denotes speciﬁcations which apply over the full operating

temperature range, otherwise speciﬁcations are at TA = 25°C, INTVCC = DRVCC = VBOOST = VOFF = VRNG = SHDN = UVIN = VEXTVCC =

VNDRV = 10V, VSYNC = VSENSE+ = VSENSE– = VBGRTN = VSW = 0V, unless otherwise speciﬁed.

Note 4: The LTC3813 is tested in a feedback loop that servos VFB to the

reference voltage with the ITH pin forced to a voltage between 1V and 2V.

Note 5: The dynamic input supply current is higher due to the power

MOSFET gate charging being delivered at the switching frequency

(QG • fSW).

Note 6: Guaranteed by design. Not subject to test.

Note 7: This IC includes overtemperature protection that is intended

to protect the device during momentary overload conditions. Junction

temperature will exceed 125°C when overtemperature protection is active.

Continuous operation above the speciﬁed maximum operating junction

temperature may impair device reliability.

Note 8: ICC is the sum of current into NDRV and INTVCC.

ELECTRICAL CHARACTERISTICS

LTC3813 Datasheet(PDF) 4 Page - Linear Technology

LTC3813 Datasheet(HTML) 4 Page - Linear Technology

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32

Datasheet Download

Link URL