LTC4080EMSE Ver la hoja de datos (PDF) - Linear Technology

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LTC4080EMSE

500mA Standalone Li-Ion Charger with Integrated 300mA Synchronous Buck

Linear Technology 

LTC4080

TYPICAL PERFORMANCE CHARACTERISTICS (TA = 25°C, VCC = 5V, VBAT = 3.8V, unless otherwise

specified)

Output Voltage Transient

Step Response (PWM Mode)

Output Voltage Waveform

when Switching Between Burst

and PWM Mode (ILOAD = 10mA)

Output Voltage Transient

Step Response (Burst Mode)

VOUT

20mV/DIV

AC COUPLED

ILOAD

250mA/DIV

I=0

50μs/DIV

VOUT

50mV/DIV

AC COUPLED

4080 G25

VMODE

5V/DIV

0V

Buck VOUT Soft-Start

(ILOAD = 50mA)

50μs/DIV

VOUT

20mV/DIV

AC COUPLED

4080 G27

ILOAD

50mA/DIV

I=0

50μs/DIV

Charger VPROG Soft-Start

4080 G26

VOUT

1V/DIV

0V

VEN_BUCK

5V/DIV

0V

200μs/DIV

4080 G28

VPROG

200mV/DIV

V=0

50μs/DIV

4080 G29

4080fb

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