Table 4.2. Recommended Operating Conditions
Symbol Parameter (Condition) Min Typ Max Unit
V
PORT
VPORT = VPOS – VNEG 1.5 — 57 V
V
HV_OP
VNEG-VSS, VNEG-HSO, VPOS-
VSS
1.5 — 57 V
V
LV_OP
VPOS referred low voltage pins:
RFREQ, RDET, FBH
–5.5 — 0 V
V
LV_OP
VSS referred low voltage pins: VDD,
FBL, EROUT
0 — 5.5 V
V
ISNS_OP
VSS referred current sensing pin:
ISNS
–0.5 — 0.5 V
V
LV_OP
VNEG referred low voltage pins:
RCL
0 — 5.5 V
V
MV_VT15
VSS referred medium voltage pin
VT15
1
12 14.5 16.5 V
I
AVG
Allowable continuous current on
VPOS, SWO, VSS, HSO, VNEG
— — 600 mA
I
MAX
Max current on HSO, VNEG, VPOS
Max 75 ms 5% Duty Cycle
— — 683 mA
Note:
1.
V
MV_VT15
is relevant for Si3404 only when an external auxiliary bias winding from the primary side of the transformer is being
used to improve power conversion efficiency. This can be left undriven, in which case an internal regulator will be used.
Si3404 Data Sheet
Electrical Specifications
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