LTC4090 datasheet(5/28 Pages) LINER

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LTC4090/LTC4090-5

4090fa

IBAT (mA)

4.00

4.05

4.10

4.15

4.20

4.25

4.30

200

400

600

800

4090 G01

1000

RPROG = 34k

TEMPERATURE (

°C)

–50

4.195

4.200

4.205

4090 G02

4.190

4.185

4.180

–25

4.210

4.215

4.220

100

VIN = 5V

IBAT = 2mA

TIME (MIN)

200

4090 G03

100

150

600

900

300

1500

1200

VBAT

VOUT

VCHRGB

IBAT

1250mAh

CELL

HVIN = 12V

RPROG = 50k

C/10

TERMINATION

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 LTC4090/LTC4090-5 are 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.

Note 3: This IC includes overtemperature protection that is intended

to protect the device during momentary overload conditions. Junction

temperatures will exceed 110°C when overtemperature protection is

active. Continuous operation above the speciﬁed maximum operating

junction temperature may result in device degradation or failure.

Note 4: VCC is the greater of VIN, VOUT, and VBAT

Note 5: Guaranteed by long term current density limitations.

Note 6: Total input current is equal to this speciﬁcation plus 1.002 • IBAT

where IBAT is the charge current.

Note 7: Accuracy of programmed current may degrade for currents

greater than 1.5A.

Note 8: This is the minimum voltage across the boost capacitor needed to

guarantee full saturation of the switch.

Note 9: Absolute Maximum Voltage at HVIN and HVEN pins is for non-

repetative 1 second transients; 40V for continuous operation.

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

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

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

SYMBOL

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

NTC

IVNTC

VNTC Pin Current

VNTC = 2.5V

●

1.4

2.5

3.5

VVNTC

VNTC Bias Voltage

IVNTC = 500μA

●

4.4

4.85

INTC

NTC Input Leakage Current

NTC = 1V

±1

μA

VCOLD

Cold Temperature Fault Threshold

Voltage

Rising NTC Voltage

Hysteresis

0.738 • VNTC

0.02 • VNTC

VHOT

Hot Temperature Fault Threshold

Voltage

Falling NTC Voltage

Hysteresis

0.29 • VNTC

0.01 • VNTC

VDIS

NTC Disable Threshold Voltage

Falling NTC Voltage

Hysteresis

●

100

125

TYPICAL PERFORMANCE CHARACTERISTICS

VFLOAT Load Regulation

Battery Regulation (Float)

Voltage vs Temperature

Battery Current and Voltage vs

Time (LTC4090)

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