BD8622EFV_09 ROHM [Rohm], BD8622EFV_09 Datasheet - Page 8

• 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
Soft start time set function
As for BD8622EFV, output can do soft start without overshoot by charging soft start capacity (CSS) connected between SS
and SGND terminal.
Also, soft start time (tss) can be set by setting soft start capacity (CSS) arbitrarily.
OSC oscillation frequency setting function
The output oscillation frequency can be set by connecting resistance between terminal RT (20 pins) and SGND
(range = 250kHz - 1MHz)
The relation between RT terminal resistance and the oscillation frequency follows Fig.4.
1000
10
10
Fig.4 RT resistance-oscillation frequency
RT terminal resistance [kΩ]
100
8/15
1000
10000
Technical Note
2009.05 - Rev.A