LTC4057-4.2

3

4057f

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

of a device may be impaired.

Note 2: The LTC4057 is guaranteed to meet performance specifications from

0

°C to 70°C. Specifications over the –40°C to 85°C operating temperature

ELECTRICAL CHARACTERISTICS

range are assured by design, characterization and correlation with statistical

process controls.

Note 3: See Thermal Considerations.

TYPICAL PERFOR A CE CHARACTERISTICS

4.0

1.015

1.010

1.005

1.000

0.995

0.990

0.985

4.5

5.0

5.5

6.0

4057 G01

6.5

7.0

TEMPERATURE (

°C)

–50

–25

0

50

25

75

100

4057 G02

1.0100

1.0075

1.0050

1.0025

1.0000

0.9975

0.9950

0.9925

0.9900

0

600

500

400

300

200

100

0

0.25

0.50

0.75

1.00

4057 G03

1.25

4057 G04

4.26

4.24

4.22

4.20

4.18

4.16

4.14

4.12

4.10

0

100

200

300

400

500

700

600

4.0

4.215

4.210

4.205

4.200

4.195

4.190

4.185

4.5

5.0

5.5

6.0

4057 G06

6.5

7.0

TEMPERATURE (

°C)

–50

100

050

–25

25

75

4.220

4.215

4.210

4.205

4.200

4.195

4.190

4.185

4.180

4057 G05

PROG Pin Voltage vs Supply

Voltage (Constant Current Mode)

PROG Pin Voltage vs Temperature

(Constant Current Mode)

Charge Current vs PROG Pin

Voltage

Regulated Output (Float) Voltage

vs Charge Current

Regulated Output (Float) Voltage

vs Temperature

Regulated Output (Float) Voltage

vs Supply Voltage