LTC4010 datasheet(4/24 Pages) LINER

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LTC4010

4010fb

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: The LTC4010E is guaranteed to meet performance specifications

from 0°C to 70°C. Specifications over the 0°C to 85°C operating

temperature range are assured by design, characterization and correlation

with statistical process controls.

Note 3: Operating junction temperature TJ (in °C) is calculated from

the ambient temperature TA and the total continuous package power

dissipation PD (in watts) by the formula:

TJ = TA + qJA • PD

Refer to the Applications Information section for details. This IC includes

overtemperature protection that is intended to protect the device during

momentary overload conditions. Junction temperature will exceed 125°C

The l indicates specifications which apply over the full operating

temperature range, otherwise specifications are at TA = 25°C. VCC = 12V, BAT = 4.8V, GND = PGND = 0V, unless otherwise noted.

SYMBOL

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

Charger Timing

∆tTIMER

Internal Time Base Error

–10

∆tMAX

Programmable Timer Error

RTIMER = 49.9k

–20

Status and Chemistry Select

VOL

Output Voltage Low (ILOAD = 10mA)

VCDIV

All Other Status Outputs

435

300

700

600

ILKG

Output Leakage Current

All Status Outputs Inactive, VOUT = VCC

–10

µA

IIH(VCDIV)

Input Current High

VCDIV = VBAT (Shutdown)

–1

µA

VIL

Input Voltage Low

CHEM (NiMH)

900

VIH

Input Voltage High

CHEM (NiCd)

2.85

IIL

Input Current Low

CHEM = GND

–20

–5

µA

IIH

Input Current High

CHEM = 3.3V

–20

µA

when overtemperature protection is active. Continuous operation above

the specified maximum operating junction temperature may result in

device degradation or failure.

Note 4: All current into device pins are positive. All current out of device

pins are negative. All voltages are referenced to GND, unless otherwise

specified.

Note 5: Output current may be limited by internal power dissipation. Refer

to the Applications Information section for details.

Note 6: Either TGATE VOH may apply for 7.5V < VCC < 9V.

Note 7: These limits apply specifically to the thermistor network shown in

Figure 5 in the Applications Information section with a

b of 3750 and are

guaranteed by specific VTEMP voltage measurements during test.

Note 8: These limits are guaranteed by correlation to wafer level

measurements.

TIME (MINUTES)

1.50

1.55

1.60

4010 G01

1.45

1.40

1.35

1.30

1.65

CHARGE CURRENT

BATTERY

TEMPERATURE

SINGLE CELL

VOLTAGE

TIME (MINUTES)

1.60

1.65

1.70

4010 G02

1.55

1.50

1.45

1.35

1.40

1.75

CHARGE CURRENT

BATTERY

TEMPERATURE

SINGLE CELL

VOLTAGE

4 SERIES NiCd 1300mAhr

SC CELLS CHARGED AT 2C

NiCd Charge Cycle at 1C

NiCd Charge Cycle at 2C

Typical perForMance characTerisTics

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