LT1511CSW datasheet(4/16 Pages) LINER

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LT1511

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

temperature range, otherwise specifications are at TA = 25°C. VCC = 16V, VBAT = 8V, VMAX (maximum operating VCC) = 28V.

No load on any outputs unless otherwise noted.

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

Voltage Amplifier VA

Transconductance (Note 3)

Output Current from 50

µA to 500µA

0.25

0.6

1.3

mho

Output Source Current

VOVP = VREF + 10mV, VPROG = VREF + 10mV

1.1

OVP Input Bias Current

At 0.75mA VA Output Current

±3

±10

At 0.75mA VA Output Current, TJ > 90°C

– 15

Current Limit Amplifier CL1, 8V

≤ Input Common Mode

Turn-On Threshold

0.75mA Output Current

100

107

Transconductance

Output Current from 50

µA to 500µA

0.5

mho

CLP Input Current

0.75mA Output Current, VUV ≥ 0.4V

0.3

µA

CLN Input Current

0.75mA Output Current VUV ≥ 0.4V

0.8

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

of a device may be impaired.

Note 2: Tested with Test Circuit 1.

Note 3: Tested with Test Circuit 2.

Note 4: A linear interpolation can be used for reference voltage

specification between 0

°C and –40°C.

TYPICAL PERFORMANCE CHARACTERISTICS

Thermally Limited Maximum

Charging Current

Efficiency of Figure 1 Circuit

DUTY CYCLE (%)

1030

5070

1511 • TPC03

125

°C

VCC = 16V

ICC vs Duty Cycle

INPUT VOLTAGE (V)

3.0

2.8

2.6

2.4

2.2

2.0

1511 • TPC01

(

θJA=30°C/W)

TAMAX=60°C

TJMAX=125°C

4.2V BATTERY

VIN ≥ 8V

8.4V BATTERY

VIN ≥ 11V

12.6V BATTERY

16.8V BATTERY

NOTE: FOR 4.2V AND 8.4V BATTERIES MAXIMUM

CHARGING CURRENT IS 3A FOR VIN – VBAT ≥ 3V

IBAT (A)

0.2

100

1.0

1.8

3.0

2.6

2.2

1511 • TPC02

0.6

1.4

VIN = 16.5

VBAT = 8.4V

CHARGER EFFICIENCY

INCLUDES LOSS

IN DIODE D3

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