MB3759 Datasheet, PDF (18/27 Pages) Fujitsu Component Limited. – Switching Regulator Controller (Switchable between push-pull and single-end functions)

MB3759
(3) When an external stabilized negative power supply is present
IO
RS
VO
R1
VIO
+
VO^*
−
R2
−VEE
VO
VO
0
IO
0
I L5
I L1
The output current IO after current limiting is:
IO =
1
RS
R1
R1 + R2
(VO
+
VEE) –
VIO
RS
(R2
>>R1)
If the output is momentarily shorted, VO* goes briefly negative. In this case, set the voltage across R1 to
300 mV or less to ensure that a voltage of less than -0.3 V is not applied to the op-amp input.
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