BD2061AFJ,BD2065AFJ

Technical Note

9/12

www.rohm.com

2011.05 - Rev.B

© 2011 ROHM Co., Ltd. All rights reserved.

4. Under voltage lockout (UVLO)

the switch turns on, then UVLO shuts off the power switch. UVLO has hysteresis of a 100mV(Typ).

Under voltage lockout circuit works when the switch is on (EN,/EN signal is active).

5. Error flag (/OC) output

Error flag output is N-MOS open drain output. At detection of over current, thermal shutdown, low level is output.

Over current detection has delay filter. This delay filter prevents instantaneous current detection such as inrush current at

switch on, hot plug from being informed to outside.

Output shortcircuit

Thermal shut down

delay

Fig.40 Over current detection, thermal shutdown timing

(BD2061AFJ)

Output shortcircuit

Thermal shut down

delay

Fig.41 Over current detection, thermal shutdown timing

(BD2065AFJ)