LTC4065 datasheet(3/16 Pages) LINER

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LTC4065/LTC4065A

4065f

SYMBOL

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

IPROG

PROG Pin Pull-Up Current

VPROG > 1V

µA

(LTC4065A)

VMS,PROG

PROG Shutdown Threshold Voltage

VPROG Rising

●

3.7

4.3

(LTC4065A Only)

tSS

Soft-Start Time

180

µs

ITRKL

Trickle Charge Current

VBAT = 2V, RPROG = 2k (0.1%)

VTRKL

Trickle Charge Threshold Voltage

VBAT Rising

●

2.7

2.9

3.05

VTRHYS

Trickle Charge Hysteresis Voltage

∆VRECHRG

Recharge Battery Threshold Voltage

VFLOAT – VRECHRG, 0°C < TA < 85°C

100

130

∆VUVCL1

(VCC – VBAT) Undervoltage Current

IBAT = 90% Programmed Charge Current

180

220

330

∆VUVCL2

Limit

IBAT = 10% Programmed Charge Current

125

150

tTIMER

Termination Timer

●

4.5

Hrs

Recharge Time

●

1.5

2.25

Hrs

Low-Battery Trickle Charge Time

VBAT = 2.5V

●

0.75

1.125

1.5

Hrs

VACPR

ACPR Pin Output Low Voltage

IACPR = 5mA

●

105

(LTC4065A)

IACPR

ACPR Pin Input Current (LTC4065A)

VCC = 4V, VACPR = 4V, VBAT = 4.5V

●

µA

VCHRG

CHRG Pin Output Low Voltage

ICHRG = 5mA

●

105

ICHRG

CHRG Pin Input Current

VBAT = 4.5V, VCHRG = 5V

●

µA

IC/10

End of Charge Indication Current

RPROG = 2k (Note 5)

●

0.085

0.1

0.115

mA/mA

Level

TLIM

Junction Temperature in Constant

115

°C

Temperature Mode

RON

Power FET “ON” Resistance

IBAT = 200mA

450

Ω

(Between VCC and BAT)

fBADBAT

Defective Battery Detection CHRG

Pulse Frequency

DBADBAT

Defective Battery Detection CHRG

Pulse Frequency Duty Ratio

The

● denotes specifications which apply over the full operating temperature range, otherwise specifications are TA = 25°C.

VCC = 5V, VBAT = 3.8V, VEN = 0V (LTC4065 only) unless otherwise specified. (Note 2)

ELECTRICAL CHARACTERISTICS

Note 1: Absolute Maximum Ratings are those values beyond which the life

of a device may be impaired.

Note 2: The LTC4065/LTC4065A are guaranteed to meet performance

specifications from 0

°C to 70°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: Failure to solder the exposed backside of the package to the PC

board ground plane will result in a thermal resistance much higher than

102

°C/W.

Note 4: Although the LTC4065 functions properly at 3.75V, full charge

current requires an input voltage greater than the desired final battery

voltage per the

∆VUVCL1 specification.

Note 5: IC/10 is expressed as a fraction of measured full charge current

with indicated PROG resistor.

Note 6: 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.

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