bd8622efv ROHM Co. Ltd., bd8622efv Datasheet - Page 8

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

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
100
1000
10000
RT端子抵抗 [kΩ]
RT terminal resistance [kΩ]
Fig.4 RT resistance-oscillation frequency
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