FUSB3307

www.onsemi.com

5

PIN FUNCTION DESCRIPTION

SOIC Pin

Number

QFN Pin

Number

Pin Name

I/O Type

Description

1

14

VCC

Supply

Output voltage (Input voltage to the FUSB3307). This pin is tied to the output of

the power source to monitor its output voltage and supply internal bias to the

FUSB3307 via the VDD pin.

4

19

VDD

Supply

Internal supply voltage regulator output. This pin should be connected to an 1 mF

external capacitor

2

4, 15,

DAP

GND

Ground

Ground

14

12

CATH

Open Drain

Output

Feedback to control the power supply. Typically an opto−coupler cathode on the

secondary side is connected to this pin to provide feedback signal to the primary

side PWM controller. Alternatively, this can be connected to the error amplifier

output of a DC−DC regulator (often called the compensation pin) or with an invert-

ing circuit to the DC−DC feedback (FB) pin.

11

8

VFB

Input

Output Voltage Sensing Signal. This pin is used for constant voltage (CV) regula-

tion, and it is tied to the internal CV loop amplifier non−inverting input terminal. It

is tied to the output voltage external 1:10 resistor divider and a compensation

circuit

12

9

IFB

Input

Constant Current Amplifying Signal. The voltage level at this pin is the amplified

current sense signal used for providing an external compensation circuit. Internal-

ly this pin is tied to the non−inverting input of the current loop error amplifier.

10

7

IS−

Input

Current sensing amplifier negative terminal. Connect this pin directly to the nega-

tive end of the current sense resistor with a short PCB trace

9

6

IS+

Input

Current sensing amplifier positive terminal. Connect this pin directly to the posi-

tive end of the current sense resistor with a short PCB trace

3

17

GATE

Output

Gate drive signal to drive the gate of an NFET load switch

13

11

DISC

Open Drain

I/O

Discharge pin. This pin should be tied to a small (40 W) external resistor that is

connected to VBUS after the load switch to discharge VBUS at the connector

7

3

CC1

I/O

Configuration Channel 1. This pin is used to detect USB Type−C devices and

communicate over USB PD

8

5

CC2

I/O

Configuration Channel 2. This pin is used to detect USB Type−C devices and

communicate over USB PD

5

20

D+/PDIV1

D+: I/O

PDIV1: Input

Different functionality available with Trim option (see Application Information

section and note at the bottom of Table 6 below):

D+: Connected to D+ for BC1.2 or resistor divider mode

PDIV1: Programmable pin to select different USB Power Delivery Power (PDP)

values

6

2

D−/PDIV0

D−: I/O

PDIV0: Input

Different functionality available upon request:

D−: Connected to D− for BC1.2 or resistor divider mode

PDIV0: Programmable pin to select different USB Power Delivery Power (PDP)

values

N/A

10

PDIV2

Input

Programmable pin to select different USB Power Delivery Power (PDP) values

N/A

16

NTC

I/O

Pin connected to external NTC resistor to sense PCB or connector temperature

ORDERING INFORMATION

Part Number

Top Mark

Operating Temperature Range

Package

Packing Method

FUSB3307D6MX

FUSB3307D6MX

−40°C to 85°C

SOIC−14 NB

(Pb−Free)

Tape and Reel

FUSB3307D6VMNWTWG

(In Development)

3307

D6V

−40°C to 105°C

QFNW20

(Pb−Free)

Tape and Reel

FUSB3307D6MNWTWG

(In Development)

3307

D6

−40°C to 85°C

QFNW20

(Pb−Free)

Tape and Reel

Other trim (see note at the

bottom of Table 6) or

package options

−

−

Please contact

ON Semiconductor sales

−