Rev. C 08/16

2

CHY101

www.power.com

Pin Functional Description

GROUND (GND) Pin:

Ground.

V1 Pin:

Open Drain input of output voltage adjustment switch.

Active for 9 V and 12 V output setting. Connection for optocoupler

diode for primary-side latching OVP.

V2 Pin:

Open Drain input of output voltage adjustment switch.

Active for 12 V output setting. Connection for optocoupler diode for

primary-side latching OVP.

OV Pin:

Output overvoltage detection connected to the output through a

sense resistor.

BYPASS (BP) Pin:

Connection point for an external bypass capacitor for the internally

generated supply voltage.

REFERENCE (R) Pin:

Connected to internal band-gap reference. Provides reference

current through connected resistor.

PI-7207-011415

D Package (SO-8)

OV

GND

V1

1

2

V2

3

4

8

7

6

5

BP

R

D+

D-

Figure 3. Functional Block Diagram.

Figure 4. Pin Configuration.

+

+

+

+

+

REFERENCE

(R)

6 V

3.9 V

2 V

0.325 V

0.325 V

19.53 kΩ

2 V

N3

N1

N2

N4

N5

D-

D+

BYPASS

(BP)

V1

OV

V2

GROUND

(GND)

S SET

CLR

R

Q

CONTROL

LOGIC

(LOOKUP

TABLE)

BANDGAP

Q

PI-7206-011415

IV1(OV)

IV1(TH)

DATA LINE (D+) Pin:

USB D+ data line input.

DATA LINE (D-) Pin:

USB D- data line input.