LTC4089 datasheet(4/24 Pages) LINER

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LTC4089/LTC4089-5

40895fb

SYMBOL

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

Internal Ideal Diode

RFWD

Incremental Resistance, VON

Regulation

IBAT = 100mA

125

RDIO,ON

ON Resistance VBAT to VOUT

IBAT = 600mA

215

VFWD

Voltage Forward Drop (VBAT - VOUT)IBAT = 5mA

IBAT = 100mA

IBAT = 600mA

●

160

VOFF

Diode Disable Battery Voltage

2.8

IFWD

Load Current Limit, for VON

Regulation

550

ID(MAX)

Diode Current Limit

2.2

External Ideal Diode

VFWD, EXT

External Diode Forward Voltage

Logic

VOL

Output Low Voltage (CHRG, HVPR)

ISINK = 5mA

●

0.1

0.4

VIH

Input High Voltage

HVEN, SUSP, HPWR Pin Low to High

2.3

VIL

Input Low Voltage

HVEN, SUSP, HPWR Pin High to Low

0.3

IPULLDN

Logic Input Pull Down Current

SUSP, HPWR

µA

IHVEN

HVEN Pin Bias Current

VHVEN = 2.3V

VHVEN = 0V

0.01

0.1

µA

VCHG,SD

Charger Shutdown Threshold

Voltage on TIMER

●

0.14

0.4

ICHG,SD

Charger Shutdown Pull-Up Current

on TIMER

VTIMER = 0V

●

514

µA

NTC

IVNTC

VNTC Pin Current

VVNTC = 2.5V

●

1.4

2.5

3.5

VVNTC

VNTC Bias Voltage

IVNTC = 500µA

●

4.4

4.85

INTC

NTC Input Leakage Current

VNTC = 1V

±1

µA

VCOLD

Cold Temperature Fault Threshold

Voltage

Rising Threshold

Hysteresis

0.74•VVNTC

0.02•VVNTC

VHOT

Hot Temperature Fault Threshold

Voltage

Falling Threshold

Hysteresis

0.29•VVNTC

0.01•VVNTC

VDIS

NTC Disable Voltage

NTC Input Voltage to GND (Falling)

Hysteresis

●

100

125

The ● denotes the speciﬁcations which apply over the full operating

temperature range, otherwise speciﬁcations are at TA = 25°C. HVIN = 12V, BOOST = 17V, VIN = 5V, VBAT = 3.7V, HVEN = 12V,

HPWR = 5V, RPROG = 100k, RCLPROG = 2k, SUSP = 0V, unless otherwise noted.

ELECTRICAL CHARACTERISTICS

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: VCC is the greater of VIN, VOUT or VBAT

Note 3: All voltage values are with respect to GND.

Note 4: This IC includes over-temperature protection that is intended

to protect the device during momentary overload conditions. Junction

temperatures will exceed 110°C when over-temperature protection is

active. Continuous operation above the speciﬁed maximum operating

junction temperature may result in device degradation or failure.

Note 5: The LTC4089/LTC4089-5 are guaranteed to meet speciﬁed

performance from 0°C to 85°C and are designed, characterized and

expected to meet these extended temperature limits, but are not tested

at –40°C and 85°C.

Note 6: Guaranteed by long term current density limitations.

Note 7: Total input current is equal to this speciﬁcation plus 1.002 • IBAT

where IBAT is the charge current.

Note 8: Accuracy of programmed current may degrade for currents greater

than 1.5A.

Note 9: Current limit guaranteed by design and/or correlation to static test.

Slope compensation reduces current limit at high duty cycle.

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