USB3750 Datasheet, PDF (6/31 Pages) Microchip Technology – USB 2.0 Protection IC with Battery

USB375x
2.2 Pin Definitions
The following table details the ball/pin definitions for the package diagrams above.
Pin
Name
Type/
Direction
Description
15
DP
Analog
USB Mux Output
14
DM
Analog
1
DP_1
Analog
USB Mux Input 1
16
DM_1
Analog
13
DP_2 / NC
Analog
USB Mux Input 2 (USB3750 Only)
These pins are No Connects for the USB3751 (do not connect)
12
DM_2 / NC
Analog
8
GND
Analog
Ground. The QFN package flag should also connected to ground.
6
SCL
Input
I²C Clock input. This pin is an open drain output and requires a
10Kohm pull-up.
5
SDA
Open Drain/ Bi-Directional I²C data. This pin is an open drain output and
IO
requires a 10Kohm pull-up.
Open Drain/ Open Drain Interrupt. This pin is an open drain output that is
INT_B
Output
pulled low when an interrupt occurs. A 10Kohm pull-up is required
7
on this pin.
9
Overvoltage switch output. This pin is connected to VBUS when
Analog
the overvoltage protection switch is enabled. It is also the output
10
VOUT
of the 100mA current limit.
The three VOUT pins must be connected together. When VBUS
is between UVLO and OVLO VOUT is connected to VBUS. When
11
VBUS is below UVLO or above OVLO the USB375x will tri-state.
2
VBUS pin of the USB connector.
Analog
The three VBUS pins must be connected together. When the
3
VBUS
OVP switch is closed, the VBUS pin will be isolated from VOUT.
When the OVP switch is open, VBUS will be connected to VOUT.
The USB375x is powered from this pin.
4
DS00001824A-page 6
 2011 - 2014 Microchip Technology Inc.