MAX1925 datasheet(6/16 Pages) MAXIM

номер детали	MAX1925

подробное описание детали	Switch-Mode 1-Cell Li Chargers

PDF	16 Pages

Scroll/Zoom	100%

производитель	MAXIM [Maxim Integrated Products]

домашняя страница	https://www.maximintegrated.com/en.html

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Switch-Mode 1-Cell Li+ Chargers

_______________________________________________________________________________________

Typical Operating Characteristics

(Circuit of Figure 1, VSUPPLY = 5V, VBATT = 4V, TA = +25°C, unless otherwise noted.)

CHARGE-CURRENT ACCURACY

vs. SUPPLY VOLTAGE

VSUPPLY (V)

-15

-10

-5

-20

512

VBATT = 4V

CHARGE CURRENT

vs. BATTERY VOLTAGE

BATTERY VOLTAGE (V)

4.2

4.0

3.8

3.6

3.4

3.2

0.2

0.4

0.6

0.8

1.0

1.2

3.0

4.4

VIN = 12V

VIN = 10V

VIN = 8V

VIN = 5V

SEE THE DROPOUT

BEHAVIOR SECTION

FULL-BATTERY VOLTAGE

vs. SUPPLY VOLTAGE

VSUPPLY (V)

4.196

4.198

4.200

4.202

4.204

4.206

4.208

4.210

4.194

412

SHUTDOWN BATTERY CURRENT

vs. BATTERY VOLTAGE

VBATT (V)

4.0

3.8

3.6

3.4

3.2

1.5

2.0

2.5

3.0

3.5

4.0

1.0

0.5

3.0

4.2

EFFICIENCY vs. SUPPLY VOLTAGE

VSUPPLY (V)

100

512

VBATT = 4V

EFFICIENCY vs. BATTERY VOLTAGE

BATTERY VOLTAGE (V)

4.0

3.8

3.2

3.4

3.6

100

3.0

4.2

VIN = 12V

VIN = 8V

VIN = 5V

SWITCHING FREQUENCY vs. INDUCTANCE

INDUCTANCE (

µH)

100

1000

100

VIN = 12V

VIN = 8V

VIN = 5V

VBATT = 4V

SWITCHING FREQUENCY vs. RSENSE

RSENSE (

Ω)

0.10

100

1000

1.00

0.01

VIN = 12V

VIN = 8V

VIN = 5V

VBATT = 4V

SWITCHING FREQUENCY

vs. SUPPLY VOLTAGE

VSUPPLY (V)

100

150

200

250

300

350

400

450

500

512

VBATT = 4V

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