BD8622EFV_09 ROHM [Rohm], BD8622EFV_09 Datasheet - Page 9

• Manufacturer Part Number: BD8622EFV_09
• Description: Built-in 1ch FET Light Load Type DC / DC converters
• Manufacturer: ROHM [Rohm]

© 2009 ROHM Co., Ltd. All rights reserved.
BD8622EFV
www.rohm.com
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
When the terminal MODE is made "L", the Low ripple mode operation becomes effective. It becomes operation of valuing a
low ripple in the Low ripple mode operation at a light load.
[200mA/DIV]
[200mA/DIV]
[20mV/DIV]
[2V/DIV]
[20mV/DIV]
VOUT
[2V/DIV]
V
SW
SW
OUT
100
90
80
70
60
50
40
30
20
10
IL
0
I
1
L
Low current mode
Fig7 Light load mode efficiency comparison
Low ripple mord
Fig.5 Low current mode operation
Fig.6 Low ripplemord operation
Negative overcurrent [mA]
9/15
10
SW_f=550KHz(R11=220KΩ)
VIN=3.3V
VO=1.8V
Io=0～100mA
100
Technical Note
2009.05 - Rev.A