bd8622efv ROHM Co. Ltd., bd8622efv Datasheet - Page 9

• Manufacturer Part Number: bd8622efv
• Description: Built-in 1ch Fet Light Load Type Dc/dc Converters
• Manufacturer: ROHM Co. Ltd.

Light load mode operation
・ Low current mode
When the terminal MODE (17 pins) is made "H", low current mode operation becomes effective. The characteristic of the
efficiency valuing is obtained in low current mode operation at a light load.
・ Low ripple mode
a low ripple in the Low ripple mode operation at a light load.
When the terminal MODE is made "L", the Low ripple mode operation becomes effective. It becomes operation of valuing
[200mA/DIV]
[200mA/DIV]
[20mV/DIV]
[20mV/DIV]
[2V/DIV]
[2V/DIV]
100
V
90
80
70
60
50
40
30
20
10
V
SW
0
OUT
SW
OUT
Low current mode
1
I
L
I
L
ローカレントモード
Fig7 Light load mode efficiency comparison
Fig.5 Low current mode operation
Low ripple mord
ローリップルモード
Fig.6 Low ripplemord operation
Negative overcurrent [mA]
負荷電流[mA]
9 / 15
10
VIN=3.3V
VO=1.8V
Io=0～100mA
SW_f=550KHz(R11=220KΩ)
100