Datasheet IMX (Power Integrations) - 7

InnoMux2-EP InnoMux2-EP InSOP-T28B 1CV+1LED Dual Dimming with SR Pin Configuration IMX227xF CURRENT SENSE (ISENSE) Pin (Pin 1) D 28 1 ISENSE
Connection external LED driver MOSFET source terminal for sensing
2 GND 3 IDRIVE
LED current. An external current sense resistor should be connected
4 VSENSE
between this and the GND pin.
5 CDR1 6 BPS SECONDARY GROUND (GND) Pin (Pin 2) 7 DIM2 8 DIM1
GND for the secondary IC.
S 19-22 9 SR 10 FWD CURRENT SOURCE DRIVE (IDRIVE) Pin (Pin 3) NC 18 11 VCV1
Connection to external LED driver MOSFET gate terminal for
BPP 17 12 AS NC 16 13 VLED
controlling LED current.
V 15 14 NC VOLTAGE SENSE (VSENSE) Pin (Pin 4)
Connection to external LED driver MOSFET Drain terminal for PI-9811a-032024 regulation of voltage to minimise MOSFET power dissipation.
GATE DRIVE 1 (CDR1) Pin (Pin 5)
Gate driver for external selection MOSFET for V output. Figure 9. InnoMux2-EP InSOP-T28B 1CV+1LED Dual Dimming with SR Pin CV1 Configuration (Bottom View).
SECONDARY BYPASS (BPS) Pin (Pin 6)
Connection for external bypass capacitor for the secondary IC supply.
NC Pin (Pin 14)
Leave open. Should not be connected to any other pins.
LED DIMMING 2 (DIM2) Pin (Pin 7)
LED dimming control input.
UNDER/OVER INPUT VOLTAGE (V) Pin (Pin 15)
A high-voltage pin connected to the AC or DC side of the input bridge
LED DIMMING 1 (DIM1) Pin (Pin 8)
for detecting undervoltage and overvoltage conditions at the power LED dimming control input. supply input. This pin should be tied to SOURCE pin to disable UV/OV
SYNCHRONOUS RECTIFIER DRIVE (SR) Pin (Pin 9)
protection. Gate driver for external SR MOSFET.
NC Pin (Pin 16) FORWARD (FWD) Pin (Pin 10)
Leave open or connect to SOURCE pin or BPP pin. The connection point to the switching node of the transformer output
PRIMARY BYPASS (BPP) (Pin 17)
winding providing information on primary switch timing. Provides The connection point for an external bypass capacitor of the power for the secondary-side control er during start-up. primary-side supply. This is also the I selection pin for choosing LIM
OUTPUT VOLTAGE 1 (VCV1) Pin (Pin 11)
standard I or I . LIM LIM+1 Connected directly to the V output voltage, to provide current for CV1
NC Pin (Pin 18)
the control er on the secondary-side and provide sensing for output Leave open. Should not be connected to any other pins. voltage regulation and protection.
SOURCE (S) Exposed Pad (InSOP-T28B Only) ALTERNATIVE SUPPLY (AS) (Pin 12)
Power switch SOURCE connection. Also ground reference for primary Alternative supply input for the control er on the secondary-side. Can BYPASS pin. Connect all SOURCE pins together. Used to enhance be left open if not in use thermal management.
LED OUTPUT VOLTAGE (VLED) Pin (Pin 13) DRAIN (D) Pin (Pin 28)
Connected directly to the LED output voltage, to provide current for Power switch Drain connection. the control er on the secondary-side and provide sensing for LED voltage regulation and protection.
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Rev. C 10/24 www.power.com