SM5306A

SEIKO NPC CORPORATION —6

TYPICAL APPLICATION CIRCUIT

Application Circuit 1 (standard connection)

Note. Capacitance does not restrict to this value.

Application Circuit 2 (capacitively-coupled display module connection)

I

Capacitor connections to the SM5306A output pins are not required.

I

Short circuit OUT

× pins to OFB× pins. In this mode, the sag compensation circuit does not function.

Note. Only output connection is shown.

Application Circuit 3 (input connection to next stage on same printed circuit board)

I

A gain of 0dB is suitable, since matching resistors are not required. In this case, it is recommended that a

1k

Ω resistor be connected to ground.

Note. Only output connection is shown.

IN1

IN2

GND3

GND1

GND2

IN3

OFB1

OFB2

OFB3

VCC3

OUT1

VCC2

OUT3

OUT2

CLAMP

VR

22

µF

75

Ω

+

75

Ω

22

µF

75

Ω

+

75

Ω

22

µF

75

Ω

+

75

Ω

GSEL

H

L

100

µF

+

4.7

µF

4.7

µF

4.7

µF

100

µF

+

100

µF

+

VCC1

+

−

CLAMP

VR

+

−

CLAMP

VR

+

−

75

Ω

OUT

Display Module

75

Ω

6dB

SM5306

+

−

OFB

OUT

OFB

100

µF

22

µF

1k

Ω

6dB

SM5306

+

−