10 Application information
Current Setting
If the application circuit is same as below
SET1
SET2
SET3
SET4
SET5
SET6
TAP1
TAP2
TAP3
TAP4
TAP5
TAP6
Rset1
Rset2
Rset3
The current setting will be
ITAP5-6 = (1.2V ÷ (RSET3))
ITAP3-4 = (1.1V ÷ (RSET3 + RSET2))
ITAP1-2 = (1.1V ÷ (RSET3 + RSET2 + RSET1))
RSET3 = (1.2V ÷ ITAP5-6
)
RSET2 = (1.1V ÷ ITAP3-4) – RSET3
RSET1 = (1.1V ÷ ITAP1-2) – RSET3 – RSET2
The MG39132 can sustain an input voltage level as high as 500V. But users should care the heat dissipation
issue for their applications. For large wattage application, the 132 will consumes 2W~3W power. The IC’s heat-
sink should be firmly attached to the substrate. Aluminum or Ceramic PCB is recommended.
Package Thermal Resistance
The thermal resistance is around 66°C /W, junction to ambient (no air flow)
Note: Rule of thumb, it is suggested that the IC surface temperature is maintained below 9°C0 (Celsius degree). For ETSSOP16
package, maintain the power dissipation below 1.5W.
MEGAWIN
MG39132 Data Sheet
9
MEGAWIN [ MEGAWIN TECHNOLOGY CO., LTD ]
