LTM8062

3

8062f

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 LTM8062E is guaranteed to meet performance specifications

from 0°C to 125°C internal. Specifications over the full –40°C to

125°C internal operating temperature range are assured by design,

characterization and correlation with statistical process controls. The

LTM8062I is guaranteed to meet specifications over the full –40°C to

125°C internal operating temperature range. Note that the maximum

internal temperature is determined by specific operating conditions in

conjunction with board layout, the rated package thermal resistance and

other environmental factors.

Note 3: The maximum BAT charging current is reduced by thermal

foldback. See the Typical Performance Characteristics for details.

Note 4: ADJ voltages measured through 250k equivalent series resistance.

Note 5: Output battery float voltage programming resistor divider

equivalent resistance = 250k compensates for input bias current.

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

32

V

l

7.5

V

32

35

40

V

1V

4.6

V

0.3

V

0.55

V

Maximum BAT Float Voltage

14.7

V

Input Supply Current

Standby Mode

85

18

μA

μA

Maximum BAT Charging Current

(Note 3)

1.8

2.1

A

ADJ Float Reference Voltage

(Note 4)

l

3.275

3.25

3.3

3.325

3.34

V

V

ADJ Recharge Threshold Voltage

Threshold Relative to ADJ Float Reference (Note 3)

82.5

mV

ADJ Precondition Threshold Voltage

ADJ Rising (Note 4)

2.3

V

ADJ Precondition Threshold Hysteresis Voltage

Relative to ADJ Precondition Threshold (Note 4)

95

mV

ADJ Input Bias Current

Charging Terminated

CV Operation (Note 5)

65

110

nA

nA

l

2.61

2.7

2.83

V

35

100

nA

NTC Range Limit (High) Voltage

1.25

1.36

1.45

V

NTC Range Limit (Low) Voltage

0.27

0.29

0.315

V

NTC Disable Impedance

250

500

kΩ

NTC Bias Current

45

53

μA

NTC Threshold Hysteresis

For Both High and Low Range Limits

20

%

RUN Threshold Voltage

1.15

1.20

1.25

V

RUN Hysteresis Voltage

120

mV

RUN Input Bias Current

–10

nA

CHRG, FAULT Output Low Voltage

10mA Load

0.4

V

TMR Charge/Discharge Current

25

μA

TMR Disable Threshold Voltage

0.25

V

Operating Frequency

0.85

1

1.15

MHz