Triple-Output Power-Supply Controller

for Notebook Computers

6

_______________________________________________________________________________________

+5V LINE-TRANSIENT RESPONSE, FALLING

2V/div

+5V OUTPUT

50mV/div

20

µs/div

+5V LOAD-TRANSIENT RESPONSE

+5V OUTPUT

50mV/div

3A

0A

LOAD CURRENT

200

µs/div

+5V LINE-TRANSIENT RESPONSE, RISING

2V/div

+5V OUTPUT

50mV/div

20

µs/div

____________________________Typical Operating Characteristics (continued)

30

10

100

OUTPUT NOISE SPECTRUM

FREQUENCY (kHz)

-30

-10

10

-20

0

20

1

30

100k

1M

OUTPUT NOISE SPECTRUM

-50

FREQUENCY (Hz)

-30

-10

10

-60

-40

-20

0

20

10k

(PLOTS SUPERIMPOSED)