DATA SHEET
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FUSB303B Autonomous USB
Type-CE Port Controller with
I2C and GPIO Control
QFN12
CASE 722AG
FUSB303B
MARKING DIAGRAM
Description
The FUSB303B device is a fully autonomous USB Type−Ct
controller optimized for 15 W or less applications. The FUSB303B
offers CC logic detection for Source Port role, Sink Port role, DRP,
and accessory detection support, as well as Dead Battery support as
defined in USB−C specifications. The FUSB303B features
configurable address I2C access to support multiple ports per system
or it can operate autonomously configured by just pins. The
FUSB303B features ultra−low power during operation, and an
ultra−thin, 12−Lead QFN package.
UNKK
_XYZ
1
UN
KK
_
XY
Z
= FUSB303B Device Code
= Lot Trace Code
= Pin #1 Identifier
= Two Digit Date Code
= Assembly Plant Code
Features
• Fully Autonomous USB−Ct Port Controller
• Supports Latest Type−Ct Specification Release 1.3
• Source, Sink, and DRP Port role Configuration with Optional
•
•
•
•
•
•
•
•
ORDERING INFORMATION
See detailed ordering and shipping information on page 17 of
this data sheet.
Accessory Support
Try.SRC and Try.SNK modes for Preferring Source Role or Sink
Role Respectively
VDD Operating Range, 2.85−5.5 V
Typical Low Power Operation: ICC < 10 A
GPIO and I2C Configuration
Max 28 V DC Tolerance on ID, VBUS_DET, CC1 and CC2
Dead Battery Support (Sink Port role when No Power Applied)
4 kV HBM ESD Protection for Connector Pins
Small Packaging, 12 Lead QFN
(1.6 mm × 1.6 mm × 0.375 mm)
Applications
•
•
•
•
•
•
Smartphones
Tablets
Laptops
Accessoires
Industrial
Power Banks
© Semiconductor Components Industries, LLC, 2020
April, 2022 − Rev. 2
1
Publication Order Number:
FUSB303B/D
FUSB303B
BOOT
PMID
(debug boot signals)
SYSTEM TEST
SW
FAN 54511
3.2A Charger
BAT
VBUS
VBUS
4.7μF
1.8V VDDIO
SYS
PORT/
DEBUG_N
ID
VDD
VBUS_DET
FUSB303B
Processor
(I2C master
section)
IO Buffers &
Controller
INT_N /
OUT3
INT_N
SDA /
OUT1
SDA
SCL /
OUT2
SCL
SRC, SRC+Acc,
SNK, SNK+Acc,
DRP & DRP+Acc
State Machines
I2 C
Slave
Osc
VDD
EN_N
CC1
CC Switches,
I(Rp)/Rd &
Comparators Block
CC2
USB Type−C Connector
ID
BG
ADDR/
ORIENT
900k
GND
Figure 1. Typical I2C Application
BOOT
PMID
(debug boot signals)
SYSTEM
TEST
SW
FAN54511
3.2A Charger
BAT
VBUS
VBUS
SYS
GPIO[4]
PORT/
DEBUG_N
If no processor available,
tie ID to gate of Source
PMOSFET, EN_N to GND
and leave SDA/OUT1 &
SCL/OUT2 unconnected.
ID
VDD
VBUS_DET
FUSB303B
GPIO[1]
SNK or SRC
Internal pull−up
GPIO[1:2]=10/11: default
GPIO[1:2]=01: 1.5A
Processor
GPIO[1:2]=00: 3A
GPIO[2]
(USB2.0/3.1 PHY
section)
SDA /
OUT1
SCL /
OUT2
IO Buffers &
Controller
INT_N /
OUT3
Internal pull−up
GPIO[3]
SRC, SRC+Acc,
SNK, SNK+Acc,
DRP & DRP+Acc
State Machines
I2 C
Slave
Osc
VDD
EN_N
ADDR/
ORIENT
S
SS Tx/Rx
Figure 2. Typical GPIO Application
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2
CC2
BG
GND
USB 2.0
& 3.1
PHY
CC1
CC Switches,
I(Rp)/Rd &
Comparators Block
FUSB340
(USB 3.1
2:1 MUX)
SS Tx1/Rx1
SS Tx2/Rx2
USB Type−C Connector
Internal pull−up
FUSB303B
BLOCK DIAGRAM
PORT /
DEBUG _N
ID
VDD
VBUS_DET
FUSB 303B
IO Buffers &
Controller
INT_N /
OUT3
SDA /
OUT1
SCL /
OUT2
SRC, SRC+Acc,
SNK, SNK+Acc,
DRP & DRP+Acc
State Machines
I2 C
Slave
CC Switches ,
I(Rp)/Rd &
Comparators Block
Osc
VDD
EN _N
CC1
CC2
BG
ADDR/
ORIENT
GND
Figure 3. FUSB303B Block Diagram
PORT/
DEBUG_N
VBUS_DET
ADDR/
ORIENT
INT_N/
OUT3
4
5
6
4
5
6
SCL /
OUT2
CC2
2
7
SDA /
OUT1
CC1
1
Pin 1
3
8
12
11
10
9
Figure 4. FUSB303B Pin Assignment (Top Through and Bottom Views)
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7
Bottom
Layout
View
ID
3
8
GND
Top
Through
View
EN_N
GND
ID
EN_N
3
VDD
2
9
INT_N /
OUT3
CC2
10
ADDR/
ORIENT
1
11
VBUS_DET
CC1
12
PORT/
DEBUG_N
Pin 1
VDD
PIN CONFIGURATION
SDA /
OUT1
SCL /
OUT2
FUSB303B
PIN DESCRIPTIONS
Table 1. PIN DESCRIPTIONS
Pin #
Name
Type
Description
USB TYPE−C CONNECTOR INTERFACE
1, 2
CC1, CC2
I/O
4
VBUS_DET
Input
Type−C Configuration Channel pins used for USB−C receptacles
VBUS input pin for attach and detach detection
POWER AND GROUND
10
GND
Ground
Ground
12
VDD
Power
Input Supply Voltage
I2C SIGNAL INTERFACE
6
INT_N/OUT3
Open−Drain
Output
INT_N/OUT3 is a dual function pin. When in I2C mode (see ADDR/ORIENT pin), it is
the active LOW open drain interrupt output used to prompt the processor to read the
I2C register bits.
When the device is in GPIO mode (see ADDR/ORIENT pin), this pin is OUT3, an open
drain output
LOW = Audio Accessory detected
HIGH−Z = Audio Accessory not detected
7
SDA/OUT1
Open Drain
I/O
8
SCL/OUT2
Open Drain
I/O
SDA/OUT1 and SCL/OUT2 are dual function pins. When in I2C mode (see ADDR/
ORIENT pin), SDA/OUT1 is the SDA data signal and SCL/OUT2 is the SCL clock
signal of the I2C interface.
When the device is in GPIO mode (see ADDR/ORIENT pin), these pins are OUT1 and
OUT2 inputs (I) or outputs (O) are shown below:
ID pin
OUT1 (I/O)
OUT2 (I/O)
Functionality
HIGH−Z
HIGH−Z (O)
LOW (O)
No Device Attached
HIGH−Z
HIGH−Z (O)
HIGH−Z (O)
Sink with Default Current
HIGH−Z
LOW (O)
HIGH−Z (O)
Sink with 1.5 A Current
HIGH−Z
LOW (O)
LOW (O)
Sink with 3 A Current
LOW
HIGH (I)
HIGH (I)
Source with Default Current
LOW
LOW (I)
HIGH (I)
Source with 1.5 A Current
LOW
LOW (I)
LOW (I)
Source with 3 A Current
LOW
HIGH (I)
LOW (I)
Reserved (Do Not Use)
GPIO PIN INTERFACE
3
PORT/
DEBUG_N
Input then
Push/Pull
Output
PORT/DEBUG_N is a dual function pin: 3 state input to set the port role. On the falling
edge of EN_N and when VDD is active or during power up when EN_N is LOW, the
state of this pin is sampled. This pin is also sampled on a SW_RES soft reset via I2C.
HIGH = FUSB303B as a Source Only port
Float = FUSB303B as a Dual Role Port (DRP)
LOW = FUSB303B as a Sink Only port
Note: a 900 kW resistor should be used when connecting to VDD or GND to
reduce standby current.
Subsequently, this pin is the DEBUG_N push−pull output
LOW = Debug Accessory detected
HIGH = Debug Accessory not detected
5
ADDR/
ORIENT
Input then
Push/Pull
Output
ADDR/ORIENT is a dual function pin: 3 state input to set to I2C mode and the I2C
address or for GPIO mode. On the falling edge of EN_N and when VDD is active or
during power up when EN_N is LOW, the state of this pin is sampled. This pin is also
sampled on a SW_RES soft reset via I2C.
HIGH = I2C mode with address 62h
Float = GPIO mode
LOW = I2C mode with address 42h
Note: a 900 kW resistor should be used when connecting to VDD or GND to
reduce standby current.
Subsequently, this pin is the ORIENT push−pull output
LOW = CC is CC1 or A5 of the USB−C receptacle
HIGH = CC is CC2 or B5 of the USB−C receptacle
9
ID
Open−Drain
Output
11
EN_N
Input
Open drain output that indicate FUSB303B’s detection state as a Source or Sink
LOW = FUSB303B attached as a Source
HIGH−Z = FUSB303B attached as a Sink
Active LOW device enable input (has internal pull up resistor)
Note: CONTROL1.ENABLE must be asserted if I2C mode is selected.
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FUSB303B
Table 2. ORIENT PIN VERSUS ORIENT [1:0] REGISTER BITS MAPPING
STATUS.
ORIENT[1] Bit
STATUS.
ORIENT[0] Bit
ADDR/ORIENT pin
Output
SNK. Open
0
0
LOW
SNK. Open
SNK. Rp
1
0
HIGH
SNK. Rp
SNK. Open
0
1
LOW
SNK. Rp (Note 2)
SNK. Rp
0
1
LOW
SNK. Rp
SNK. Rp (Note 2)
1
0
HIGH
CC1 (A5)
CC2 (B5)
FUSB303B CONNECTED AS A SINK
SNK. Open
FUSB303B CONNECTED AS SOURCE
SRC. Open
SRC. Open
0
0
LOW
SRC. Open or SRC. Ra
SRC. Rd
1
0
HIGH
SRC. Rd
SRC. Open or SRC. Ra
0
1
LOW
SRC. Rd (Note 1)
SRC.Rd
0
1
LOW
SRC. Rd
SRC. Rd (Note 1)
1
0
HIGH
1. Orientation decoded on this pin after a Sink Debug Test System (DTS) attached to FUSB303B.
2. Orientation decoded on this pin after a Source Debug Test System (DTS) attached to FUSB303B.
High Voltage Tolerance on CCx and VBUS Pins
will also have ADDR/ORIENT set based on the levels
detected for CC1 and CC2. ID will be set LOW.
The FUSB303B also supports DRP toggling for detecting
debug test systems. When PORT/DEBUG_N= float upon
enable, the FUSB303B can detect both Source and Sink
debug test systems depending on how it resolves its role as
a Source or Sink. Then it acts either as a Source or Sink as
described above.
The FUSB303B will report Debug Test System detection
via the Type I2C register as well. The detection is the same
as described above except Source, Sink and DRP roles are
configured via the Portrole register. This Portrole register
setting has higher priority over the PORT/DEBUG_N pin
state for Source/Sink/DRP port role.
The FUSB303B will set INT_N/OUT3 = LOW in GPIO
mode when an Audio Accessory is detected. The
FUSB303B will report Audio Accessory detection via the
Type I2C register as well when Audio Accessory detection
is configured via the Portrole register.
The FUSB303B has additional protection for the type C
connector pins where it can tolerate up to 28 V on VBUS,
CC1 and CC2 to protect against any misbehaving Type C
device connect to the FUSB303B. If VBUS tolerance is
needed higher than 28 V, a 900 k resistor can be used
externally along with a Transient Voltage Suppressor (TVS)
to achieve almost any higher voltage tolerance dictated by
the TVS chosen.
Dead Battery
If power is not applied to FUSB303B and it is attached to
a Source device, then the Source would pull up the CC line
connected through the cable. The FUSB303B in response
will turn on the pull−down that will bring the CC voltage to
a range that the Source can detect an attached device and turn
on VBUS.
GPIO Mode, Debug and Audio Accessories
When VDD is active and on the trailing edge of EN_N, the
FUSB303B will sample PORT/DEBUG_N to determine if
the FUSB303B operates as a Source (HIGH), Sink (LOW)
or DRP (floating). Subsequently the PORT/DEBUG_N will
be set LOW when a Debug Test System is detected.
If the FUSB303B is configured as a Sink
(PORT/DEBUG_N = LOW upon enable), the FUSB303B
will detect a Debug Test System if Rp is detected on both
CC1 and CC2. Devices that support orientation detection
will also have ADDR/ORIENT set based on the levels
detected for CC1 and CC2. ID will be set HIGH−Z.
If the device is configured as a Source
(PORT/DEBUG_N = HIGH upon enable), the FUSB303B
will detect a Debug Test System if Rd is detected on both
CC1 and CC2. Devices that support orientation detection
FORCE.SNK and FORCE.SRC Functionality
In some cases, a device may need to force its role to a Sink
or a Source especially if two DRP devices are connected
together and they have connected in the wrong device role.
In that case, the FUSB303B has incorporated a function that
allows it to be forced into either Sink or Source. However,
if it cannot complete this role change, the FUSB303B will
resume its previous role and flag success or failure with
I_FRC_SUCC and I_FRC_FAIL interrupts respectively.
Remedial Actions
In some cases, a device may start to detect a Source or Sink
but get caught in a loop trying to resolve the detected device.
In that case the FUSB303B provides functionality to resolve
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FUSB303B
as a Sink when attached to another DRP. If connected to
another Sink, the port will detach. The threshold at which
AUTOSNK can be triggered can be programmed via the
AUTO_SNK_TH bits. The I_AUTOSNK interrupt is
triggered whenever this functionality is invoked.
to a stable attached state. This functionality can be turned on
and off via the REMEDY_EN and DCABLE_EN bits.
Multiple cases are tried and some of the register settings will
be changed to try to achieve stable attach. The I_REMEDY
interrupt will allow the processor to know that this
functionality has been triggered.
Power Up, Initialization and Reset, Interrupt Operation,
I2C Interface
AUTOSNK Mode
The FUSB303B includes a full I2C slave controller. The
I2C slave fully complies with the I2C specification version
6 requirements. This block is designed for fast mode.
Examples of an I2C write and read sequence are shown
Figure 5 and Figure 6 respectively.
When the FUSB303B is powered directly from VBAT the
AUTO_SNK_EN mode can be used to prevent the
application from attaching as a Source when the battery is
weak or disconnect and attach as a Sink. With
AUTO_SNK_EN enabled the port will attempt to configure
8bits
8bits
8bits
S Slave Address WR A Register Address K A Write Data A Write Data K+1 A Write Data K+2
NOTE:
A Write Data K+N−1 A P
Single byte write is initiated by Master with P immediately following the first data byte and slave A
Figure 5. I2C Write Example
8bits
8bits
8bits
8bits
S Slave Address WR A Register Address K A S Slave Address RD A
Register address to Read specified
NOTE:
Read Data K A Read Data K+1 A Read Data K+N−1NA P
Single or multi byte read executed from current register location (Single Byte
read is initiated by Master with NA immediately following first data byte
If Register is not specified Master will begin read from current register. In this case only sequence showing in Red bracket
is needed
From Master to Slave
From Slave to Master
S Start Condition
A Acknowledge (SDA Low)
NA NOT Acknowledge (SDA high)
WR Write=O
RD Read =1
P Stop Condition
Figure 6. I2C Write Example
stays high impedance in preparation of future interrupts.
When an interruptible event occurs, INT_N/OUT3 is driven
LOW and is in a high impedance state again when the
processor clears the interrupt by writing a one in the position
of the interrupt bit that was set. Subsequent to the initial
power up or reset; if the processor writes a “1” to global
interrupt mask bit when the system is already powered up,
the INT_N/OUT3 pin stays in a high impedance state and
ignores all interrupts until the global interrupt mask bit is
cleared. If an event happens that would ordinarily cause an
interrupt when the global interrupt mask bit is set, the
INT_N/OUT3 pin goes LOW when the global interrupt
mask is cleared.
Interrupt bits hold their value and to clear a specific
interrupt, a “1” needs to be written to that interrupt bit.
When power is first applied, the FUSB303B will power up
in the configuration set by the PORT/DEBUG_N input with
Audio Accessory Support enabled and all interrupts
masked. If the ADDR/ORIENT input is HIGH or LOW (I2C
mode) the local processor can then re−configure the
FUSB303B to the desired mode and clear the global
interrupt mask bit, INT_MASK using the I2C interface. To
enable device function in I2C mode, the register bit
ENABLE in CONTROL1 must also be asserted. The
INT_N/OUT3 pin is an active LOW, open drain output. This
pin indicates to the host processor that an interrupt has
occurred in the FUSB303B which needs attention. The
INT_N/OUT3 pin is in a high impedance state by default
after power−up or device reset, and the global interrupt mask
(INT_MASK in Control register) is set. After INT_MASK
bit is cleared by the local processor, the INT_N/OUT3 pin
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6
FUSB303B
I2C Address
The ADDR/ORIENT bit HIGH or LOW is indicated in bit
5 of the slave address shown in Table 3.
Table 3. FUSB303B I2C SLAVE ADDRESS
Name
Size (Bits)
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Slave Address
8
0
1
ADDR/ORIENT
state
0
0
0
1
R/W
Table 4. ABSOLUTE MAXIMUM RATINGS
Symbol
Min.
Max.
Unit
VVDD
Supply Voltage from VDD
−0.5
6.0
V
VCON
ID, VBUS_DET, CC1 and CC2 voltage
−0.5
28.0
V
VIO
PORT/DEBUG_N, ADDR/ORIENT, INT_N/OUT3, SDA/OUT1, SCL/OUT2 pins voltage
−0.5
6.0
V
VIO
EN_N
−0.5
2.0
V
Storage Temperature Range
−65
TSTORAGE
Parameter
+150
C
TJ
Maximum Junction Temperature
+150
C
TL
Lead Temperature (Soldering, 10 seconds)
+260
C
ESD
IEC 61000−4−2 System ESD with external TVS
Connector
Pins (VBUS,
CC1 & CC2)
Human Body Model, JEDEC JESD22−A114
Charged Device Model, JEDEC LESD22−C101
Air Gap
15
Contact
8
Connector Pins
(VBUS_DET, CC1 and CC2)
4
Others
2
All Pins
1
kV
kV
Stresses exceeding those listed in the Maximum Ratings table may damage the device. If any of these limits are exceeded, device functionality
should not be assumed, damage may occur and reliability may be affected.
Table 5. RECOMMENDED OPERATING CONDITIONS
Symbol
Min.
Typ.
Max.
Unit
VBUS
VBUS_DET Voltage
4.0
5.0
22
V
VDD
Supply Voltage
2.85
3.3
Operating Temperature
−40
TA
Parameter
5.5
V
+85
C
Functional operation above the stresses listed in the Recommended Operating Ranges is not implied. Extended exposure to stresses beyond
the Recommended Operating Ranges limits may affect device reliability.
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FUSB303B
Table 6. DC AND TRANSIENT CHARACTERISTICS
(Unless otherwise specified: Recommended TA and TJ temperature ranges. All typical values are at TA = 25°C and VDD = 3.3 V unless
otherwise specified.)
TA = −40 to +85°C
TJ=−40 to +125°C
Symbol
Parameter
Min.
Typ.
Max
Unit
TYPE C SPECIFIC PARAMETERS
I80_CCX
Source 80 A CC Current (Default) HOST_CUR1 = 0, HOST_CUR0 = 1 or
via GPIO mode
64
80
96
A
I180_CCX
Source 180 A CC Current (1.5 A) HOST_CUR1 = 1, HOST_CUR0 = 0 or
via GPIO mode
166
180
194
A
I330_CCX
Source 330 A CC Current (3 A) HOST_CUR1 = 1, HOST_CUR0 = 1 or via
GPIO mode (Note 3)
304
330
356
A
VSNKDB
Sink Pull−Down Voltage in Dead Battery Under all Pull−up Source Loads
2.18
V
5.6
k
Rd
Sink Pull−Down Resistance when VDD is within Operating Range
4.6
CC Resistance for Disabled State
126
Ra Detection Threshold for CC Pin for Source for Default Current on VBUS
(HOST_CUR1/0 = 01) or via GPIO mode
0.15
0.20
0.25
V
Ra Detection Threshold for CC Pin for Source for 1.5 A Current on VBUS
(HOST_CUR1/0 = 10) or via GPIO mode
0.35
0.40
0.45
V
vRa−SRC3A
Ra Detection Threshold for CC Pin for Source for 3 A Current on VBUS
(HOST_CUR1/0 = 11) or via GPIO mode
0.75
0.80
0.85
V
vRd−SRCdef
Rd Detection Threshold for Source for Default Current
(HOST_CUR1/0 = 01) or via GPIO mode
1.50
1.60
1.65
V
vRd−SRC1.5A
Rd Detection Threshold for Source for 1.5 A Current (HOST_CUR1/0 = 10)
or via GPIO mode
1.50
1.60
1.65
V
vRd−SRC3A
Rd Detection Threshold for Source for 3 A Current (HOST_CUR1/0 = 11) or
via GPIO mode (Note 3)
2.45
2.60
2.75
V
Ra Detection Threshold for CC Pin for Sink
0.15
0.20
0.25
V
zOPEN
vRa−SRCdef
vRa−SRC1.5A
vRa−SNK
vRd−def
k
Rd Default Current Detection Threshold for Sink
0.61
0.66
0.70
V
vRd−1.5A
Rd 1.5 A Current Detection Threshold for Sink
1.16
1.23
1.31
V
vRd−3.0A
Rd 3 A Current Detection Threshold for Sink
2.04
2.11
2.18
V
vVBUSthr
VBUS_DET Threshold when VBUSOK is deasserted
2.9
3.3
3.67
V
tVBUSdeb
VBUS_DET debounce time before VBUSOK is deasserted only
(see tDeb below for VBUSOK being asserted)
10
20
ms
4.48
V
500
s
0.8
V
vVBthLH
tDeb
vVSAFEthr
vVSAFEthrhys
rVBUSleak
VBUS_DET Threshold when VBUSOK is asserted
3.67
VBUS_DET debounce time before VBUSOK is asserted
250
VSAFE0V VBUS_DET Threshold hysteresis
50
Leakage between VBUS and GND when VBUS not sourced
Effective resistance from VBUS and GND when VBUS is being discharged
from vSafe5V
VDD (V) = 2.85 to 5.5
rPullup
Pull up resistor to VDD value on EN_N pin
VDD (V) = 2.85 to 5.5
vAUTOSNKthr
4.07
vSafe0V VBUS_DET Threshold
rVBUSdschg
Ra
5.1
mV
72.4
k
2
6
Weak Battery VDD Threshold
−3%
Resistor for discharging VCONN
VDD (V) = 2.85 to 5.5
AUTO
SNK_T
H
1
3. VDD = 3 V when 3 A current advertised.
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8
k
M
+3%
V
kΩ
FUSB303B
Table 7. CURRENT CONSUMPTION
TA = −40 to +85°C
TJ=−40 to +125°C
Symbol
Idisable
Istby
Parameter
VDD (V)
Min.
Typ.
Max.
Unit
5
A
Disabled Current
2.85 to 4.35
Disabled State EN N = HIGH or
not connected
Unattached Sink (3.3 V I2C mode
without AUTOSNK or accessories)
2.85 to 4.35
Nothing attached
5
10
A
Nothing attached, Internally
Toggling
10
15
A
Attached as a Sink or Source
10
15
A
Unattached DRP or Source
(3.3 V I2C mode without
AUTOSNK or accessories)
Iattach
Conditions
Attached Source or Sink
(3.3 V I2C mode without
AUTOSNK or accessories. Not
including Ixxx_CCX current)
2.85 to 4.35
Table 8. TIMING PARAMETERS
TA = −40 to +85°C
TJ=−40 to +125°C
Unit
Min.
Typ.
Max.
Unit
−33%
TCCDE
B
+33%
ms
Time a Sink port shall wait before it can determine it is detached
10
15
20
ms
tTryCCDebounce
Time a port shall wait before it can determine it is re−attached during the
try−wait process
10
20
ms
tRpValueChange
Time a Sink port shall wait before it can determine there has been a
change in Rp
10
20
ms
tSRCDisconnect
Time a Source shall detect the SRC.Open state
10
Time staying in the ErrorRecovery State if sent there via the ERROR_REC
bit or by a change of port roles
25
Time staying in the Try.SRC/SNK prior to transition to TryWait.SRC/SNK
State
Time to discharge VBUS before giving up for cases where VBUS is always
on.
Symbol
Parameter
tCCDebounce
Debounce Time for CC Attach Detection (TCCDEB[2:0] = 011)
tPDDebounce
tErrorRecovery
tDRPTry
tTryTimeout
tDRP
tDRPTransition
tDRPTogSNK
tDRPTogSRC
tEN
Sum of tDRPTogSNK and tDRPTogSRC
20
ms
100
ms
75
150
ms
550
1100
ms
+33%
ms
1
ms
−33%
Time DRP shall complete transitions between Source and Sink roles
For DRP Operation, Time Spent in Unattached.SNK before going to Unattached.SRC
State
For DRP Operation, Time Spent in Unattached.SRC before going to Unattached.SNK
State
T_DRP
0
DRPTOGGLE = 00
(Note 4)
70
%
DRPTOGGLE = 01
60
%
DRPTOGGLE = 10
50
%
DRPTOGGLE = 11
40
%
DRPTOGGLE = 00
(Note 4)
30
%
DRPTOGGLE = 01
40
%
DRPTOGGLE = 10
50
%
DRPTOGGLE = 11
60
%
Time from EN_N LOW and VDD active to I2C
access available
www.onsemi.com
9
50
2.85 to 5.5
100
ms
FUSB303B
Table 9. TIMING PARAMETERS (continued)
TA = −40 to +85°C
TJ=−40 to +125°C
Symbol
tRESET
tAUTOSNK
Min.
Parameter
Soft Reset Duration
Typ.
2.85 to 5.5
Debounce time to detect Weak Battery VDD
Threshold to trigger I_AUTOSNK if AUTOSNK
mode enabled for both entering AUTOSNK and
exiting AUTOSNK
VDD (V) = 2.85 to 5.5
10
15
Unit
Max.
Unit
100
ms
20
ms
4. Default Value when Configured in GPIO Mode (ADDR/ORIENT = Float)
Table 9. IO SPECIFICATIONS
TA = −40 to +85°C
TJ=−40 to +125°C
Symbol
Parameter
VDD (V)
Conditions
Min.
Typ.
Max.
Unit
0.4
V
0.4
V
OPEN DRAIN OUTPUT PINS (ID, INT_N/OUT3)
VOLID
Output Low Voltage
2.85 to 5.5
IOL = 4 mA
INPUT PIN (EN_N)
VILEN
Low−Level Input Voltage
2.85 to 5.5
VIHEN
High−Level Input Voltage
2.85 to 5.5
ICCTEN
VDD Current when EN_N is HIGH
2.85 to 5.5
1.2
V
Worst Input
Voltage
2
A
0.2VDD
V
0.6VDD
V
4
M
0.2VDD
V
3−STATE INPUT AND PUSH/PULL OUTPUT PINS (PORT/DEBUG_N, ADDR/ORIENT)
VILADDR
Low−Level Input Voltage
2.85 to 5.5
VIMADDR
Middle−Level Input Voltage
2.85 to 5.5
0.4VDD
VIHADDR
High−Level Input Voltage
2.85 to 5.5
0.8VDD
Impedance to VDD or GND detected as a FLOAT
including when VDD = 0
2.85 to 5.5
1
VOLOUT
Low−Level Input Voltage
2.85 to 5.5
IOL = 1 mA
VOHOUT
High−Level Input Voltage
2.85 to 5.5
IOL = −1 mA
Zfloat
I2C
V
0.8VDD
V
INTERFACE PINS – FAST MODE SDA/OUT1, SCL/OUT2
VILI2C
Low−Level Input Voltage
2.85 to 5.5
VIHI2C
High−Level Input Voltage
2.85 to 5.5
1.2
V
VHYS
Hysteresis of Schmitt Trigger Inputs
2.85 to 5.5
0.2
V
Input Current of SDA/OUT1and SCL/OUT2 Pins,
2.85 to 5.5
Input Voltage
0 V to 3.6 V
2
A
ICCTI2C
VDD Current when SDA/OUT1or SCL/OUT2 is
HIGH
2.85 to 5.5
Worst Input
Voltage
2
A
VOLSDA
Low−Level Output Voltage at 2 mA Sink Current
(Open−Drain)
2.85 to 5.5
IOL = 2 mA
0.3
V
IOLSDA
Low−Level Output Current (Open−Drain)
3.0 to 5.5
VOLSDA = 0.4 V
Capacitance for Each I/O Pin
2.85 to 5.5
Ii2C
CI
www.onsemi.com
10
0.4
20
V
mA
5
pF
FUSB303B
Table 10. FAST MODE I2C TIMING SPECIFICATIONS (see Figure 7)
Fast Mode
Symbol
fSCL
tHD;STA
Min.
Parameter
SCL/OUT2 Clock Frequency
Max.
Unit
400
kHz
Hold Time (Repeated) START Condition
0.6
s
tLOW
Low Period of SCL/OUT2 Clock
1.3
s
tHIGH
High Period of SCL/OUT2 Clock
0.6
s
0.6
tSU;STA
Set−up Time for Repeated START Condition
tHD;DAT
Data Hold Time
tSU;DAT
Data Set−up Time (Note 5)
s
0.9
s
100
ns
tr
Rise Time of SDA/OUT1 and SCL/OUT2 Signals (Note 6)
20×(VDD/5.5 V)
250
ns
tf
Fall Time of SDA/OUT1 and SCL/OUT2 Signals (Note 6)
20×(VDD/5.5 V)
250
ns
tSU;STO
Set−up Time for STOP Condition
0.6
s
tBUF
Bus−Free Time between STOP and START Conditions
1.3
s
tSP
Pulse Width of Spikes that Must Be Suppressed by the Input Filter
I2C−bus
50
ns
I2C−bus
5. A fast−mode
device can be used in a standard−mode
system, but the requirement tSU;DAT 250 ns must be met. This is
automatically the case if the device does not stretch the LOW period of the
SCL/OUT2 signal. If such a device does stretch the LOW period of the
SCL/OUT2 signal, it must output the next data bit to the I2C_ line tr_max +
tSU;DAT = 1000 + 250 = 1250 ns (according to the standard−mode I2C bus
specification) before the SCL/OUT2 line is released
6. Cb equals the total capacitance of one bus line in pF. If mixed with high−speed devices, faster fall times are allowed according to the I2C
specification
SDA
tf
tLOW
t SU;DAT
tr
tHD;STA
tf
tSP
tr
t BUF
SCL
S
tHD;STA
t HD;DAT
tHIGH
tSU;STA
Sr
tSU;STO
Figure 7. Definition of Timing for Full/Speed Mode Devices on the I2C Bus
www.onsemi.com
11
P
S
FUSB303B
REGISTER DEFINITIONS
Table 11. REGISTER MAP
Address
Register
Name
Type
Default
00h
Reserved
N/A
N/A
01h
Device ID
R
10h
02h
Device Type
R
03h
03h
Portrole
R/W
4nh (see
below)
04h
Control
R/W
43h
05h
Control1
R/W
23h
06h-08h
Reserved
N/A
N/A
09h
Manual
W/C &
R/W
00h
0Ah
Reset
W/C
00h
0Bh-0Dh
Reserved
N/A
N/A
0Eh
Mask
R/W
00h
M_ORIEN
T
M_FAULT
0Fh
Mask1
R/W
00h
M_REM_
VBOFF
M_REM_
VBON
10h
Reserved
N/A
N/A
11h
Status
R
40h
12h
Status1
R
00h
13h
Type
R
00h
DEBUGS
RC
DEBUGS
NK
SINK
SOURCE
14h
Interrupt
R/W1
C
00h
I_ORIENT
I_FAULT
I_VBUS_
CHG
15h
Interrupt1
R/W1
C
00h
I_REM_V
BOFF
I_REM_V
BON
16h-1Fh
Reserved
N/A
N/A
Bit7
Bit6
Bit5
Bit4
Bit3
Bit2
Bit1
Bit0
Do Not Use
VER_ID[3:0]
REV_ID[3:0]
DEVICE_TYPE[7:0]
ORIENTD
EB
T_DRP
REMEDY
_EN
TRY[1:0]
AUDIOAC
C
DRPTOGGLE[1:0]
DCABLE_
EN
AUTO_SNK_TH[1:0]
AUTO_SN
K_EN
DRP
SNK
HOST_CUR[1:0]
ENABLE
SRC
INT_MAS
K
TCCDEB[2:0]
Do Not Use
FORCE_S
RC
FORCE_S
NK
UNATT_S
NK
UNATT_S
RC
DISABLE
D
ERROR_
REC
SW_RES
Do Not Use
M_VBUS_
CHG
M_AUTO
SNK
M_BC_LV
L
M_DETAC
H
M_ATTAC
H
M_REM_F
AIL
M_FRC_F
AIL
M_FRC_S
UCC
M_REME
DY
Do Not Use
AUTOSN
K
VSAFE0V
ORIENT[1:0]
VBUSOK
BC_LVL[1:0]
FAULT
REMEDY
ACTIVEC
ABLE
AUDIOVB
US
AUDIO
I_AUTOS
NK
I_BC_LVL
I_DETAC
H
I_ATTACH
I_REM_F
AIL
I_FRC_FA
IL
I_FRC_S
UCC
I_REMED
Y
Do Not Use
7. Do not use registers that are blank
8. Values read from undefined register bits are not defined and invalid. Do not write to undefined registers
Table 12. DEVICE ID (Address: 01h, Reset Value: 0001_0000b, Type: Read Only)
Bit #
Name
Size (Bits)
Bit#: Default
7:4
VER_ID
4
7:4 01h
Device version ID by Trim, etc.
A_[REV_ID]: 0001 (FUSB303B A)
3:0
REV_ID
4
3:0 00h
Revision History of each version
[VER_ID]_revA: 0000
Description
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12
ATTACH
FUSB303B
Table 13. DEVICE TYPE (Address: 02h, Type: Read Only)
Bit #
Name
Size (Bits)
Bit#: Default
7:0
DEVICE_TYPE[7:0]
8
7:0 03h
Description
03h: FUSB303B
Table 14. PORTROLE (See Note 9)
(Address: 03h, Reset Value: 0100_1nnnb (Reset value for bits nnn will be set by the state of the PORT/DEBUG_N pin either during
power up when EN_N is LOW or when Vdd is valid and EN_N goes HIGH to LOW) or when SW_RES is set HIGH. In dead battery mode,
nnn = 010 or configured as SNK) Type: Read/Write)
Bit #
Name
Size (Bits)
Bit#: Default
7
Reserved
1
7 0b
Do Not Use
6
ORIENTDEB
1
6 1b
1: When a Debug Accessory is found, continue to orientation
detection if CC is on CC1 or CC2
(result is in Status.Orient[1:0])
5:4
TRY[1:0]
2
5:4 00b
3
AUDIOACC
1
3 1b
1: Enable Audio Accessory Support
(Debug Accessory support is always enabled)
2
DRP
1
2 n
1: Configure device as a Dual Role Port
(see reset value text above)
1
SNK
1
1 n
1: Configure device as a Sink (see reset value text above)
0
SRC
1
0 n
1: Configure device as a Source (see reset value text above)
Description
00: Disable (normal DRP detection for DRPs)
01: Enable Try.SNK state machine detection for DRP only
10: Enable Try.SRC state machine detection for DRP only
11: Disable (cannot have Try.SNK and Try.SRC active
together)
9. If DRP bit, SNK bit and SRC bit are all set to 1, then the priority of which Portrole the FUSB303B assumes is first priority is DRP, second
priority is SNK and last priority is SRC. See Manual register note below for priority between Manual register bits and Portrole register.
Table 15. CONTROL
Address: 04h, Reset Value: 0100_0011b, Type: Read/Write
Bit #
Name
Size (Bits)
Bit#: Default
Description
7:6
T_DRP[:0]
2
7:6 01b
Sets the total period of the DRP toggle cycle
(i.e. Unattached.SNK period + Unattached.SRC period):
00: 60 ms
01: 70 ms
10: 80 ms
11: 90 ms
5:4
DRPTOGGLE[1:0]
2
5:4 00b
Selects different timing for Dual Role Port Toggle between
Unattached.SNK State and Unattached.SRC State.
00: 60% in Unattached.SNK and 40% in Unattached.SRC
01: 50% in Unattached.SNK and 50% in Unattached.SRC
10: 40% in Unattached.SNK and 60% in Unattached.SRC
11: 30% in Unattached.SNK and 70% in Unattached.SRC
3
DCABLE_EN
1
3 0b
1: Enable Dangling Cable internal methods to achieve a
stable attach
2:1
HOST_CUR[1:0]
2
2:1 01b
Controls the pull−up current when device enabled as a
Source
00: Reserved. Do not use.
01: 80 A – Default USB Power
10: 180 A – Medium Current Mode: 1.5 A
11: 330 A – High Current Mode: 3 A
0
INT_MASK
1
1b
1: Global interrupt mask to mask all interrupts
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13
FUSB303B
Table 16. CONTROL1
(Address: 05h, Reset Value: 0010_0011b, Type: Read/Write)
Bit #
Name
Size (Bits)
Bit#: Default
Description
7
REMEDY_EN
1
7 0b
1: Enable the Remedy detection to employ internal methods
to achieve stable attach
6:5
AUTO_SNK_TH[1:0]
2
6:5 01b
4
AUTO_SNK_EN
1
4 0b
1: Enable automatic Sink port role based on weak battery
VDD threshold in bits AUTO_SNK_TH in Control register
below
3
ENABLE
1
3 0b
1: Enable the FUSB303B if the external EN_N pin is LOW in
I2C mode (that is, not in GPIO mode)
2:0
TCCDEB[2:0]
3
2:0 011b
Sets the weak battery VDD threshold voltage when
AUTO_SNK_EN is enabled.
00: 3.0 V
01: 3.1 V
10: 3.2 V
11: 3.3 V
Controls debounce time for attaching a device
000: 120 ms
001: 130 ms
010: 140 ms
011: 150 ms
100: 160 ms
101: 170 ms
110: 180 ms
111: Reserved
Table 17. Manual (Note 10)
(Address: 09h, Reset Value: 0000_0000b, Type: Read/Write (see bits below: W/C = Write one self clearing, R/W = Read/Write and N/A =
Not Applicable)
Bit #
Name
R/W/C
Size (Bits)
Bit#: Default
7:6
Reserved
N/A
2
7:6 00b
Description
5
FORCE_SRC
W/C
1
5 0b
1: Forces the FUSB303B to behave as a Source
4
FORCE_SNK
W/C
1
4 0b
1: Forces the FUSB303B to behave as a Sink
3
UNATT_SNK
W/C
1
3 0b
1: Put device in Unattached.SNK State as defined in
the Type C spec
2
UNATT_SRC
W/C
1
2 0b
1: Put device in Unattached.SRC state as defined in
the Type C spec
1
DISABLED
(Note 11)
R/W
1
1 0b
1: Put device in Disabled state as defined in the Type
C spec
0
ERROR_REC
W/C
1
0 0b
1: Put device in ErrorRecovery state as defined in the
Type C spec
Do Not Use
10. If more than one bit is set to 1b simultaneously then an order of priority will be used. First priority is DISABLED, second is ERROR_REC,
third is FORCE_SRC, fourth is FORCE_SNK, fifth is UNATT_SRC, last is UNATT_SNK. The highest priority bit will take precedence and
all other bits will be cleared automatically.
11. The DISABLED bit must be manually cleared. Also DISABLED bit has a higher priority over Portrole register since the DISABLED bit has
to be cleared in order to execute the new Portrole register settings. However, all other Manual register bits don’t have a lot of meaning if the
Portrole register is changed and so Portrole register setting should have higher priority than all bits except for DISABLED bit.
Table 18. RESET
(Address: 0Ah, Reset Value: 0000_0000b, Type: Write/Clear)
Bit #
Name
Size (Bits)
Bit#: Default
7:1
Reserved
7
7:1 00h
0
SW_RES
1
0 0b
Description
Do Not Use
1: Reset the FUSB303B and I2C Registers
www.onsemi.com
14
FUSB303B
Table 19. MASK
(Address: 0Eh, Reset Value: 0000_0000b, Type: Read/Write)
Bit #
Name
Size (Bits)
Bit#: Default
Description
7
Reserved
1
7 0b
Do Not Use
6
M_ORIENT
1
6 0b
1: Mask the I_ORIENT interrupt bit from asserting INT_N pin
5
M_FAULT
1
5 0b
1: Mask the I_FAULT interrupt bit from asserting INT_N pin
4
M_VBUS_CHG
1
4 0b
1: Mask the I_VBUS interrupt bit from asserting INT_N pin
3
M_AUTOSNK
1
3 0b
1: Mask the I_AUTOSNK interrupt bit from asserting INT_N pin
2
M_BC_LVL
1
2 0b
1: Mask the I_BC_LVL interrupt bit from asserting INT_N pin
1
M_DETACH
1
1 0b
1: Mask the I_DETACH interrupt bit from asserting INT_N pin
0
M_ATTACH
1
0 0b
1: Mask the I_ATTACH interrupt bit from asserting INT_N pin
12. Masking the interrupt just does not cause INT_N to be asserted. The interrupt bit will still be asserted in the Interrupt register and so that an
all zeroes Interrupt register value is not needed for INT_N to be deasserted.
Table 20. MASK1
(Address: 0Fh, Reset Value: 0000_0000b, Type: Read/Write)
Bit #
Name
Size (Bits)
Bit#: Default
Description
7
Reserved
1
7 0b
Do Not Use
6
M_REM_VBOFF
1
6 0b
1: Mask the I_REM_VBOFF interrupt bit from asserting INT_N pin
5
M_REM_VBON
1
5 0b
1: Mask the I_REM_VBON interrupt bit from asserting INT_N pin
4
Reserved
1
4 0b
Do Not Use
3
M_REM_FAIL
1
3 0b
1: Mask the I_REM_FAIL interrupt bit from asserting INT_N pin
2
M_FRC_FAIL
1
2 0b
1: Mask the I_FRC_FAIL interrupt bit from asserting INT_N pin
1
M_FRC_SUCC
1
1 0b
1: Mask the I_FRC_SUCC interrupt bit from asserting INT_N pin
0
M_REMEDY
1
0 0b
1: Mask the I_REMEDY interrupt bit from asserting INT_N pin
13. Masking the interrupt just does not cause INT_N to be asserted. The interrupt bit will still be asserted in the Interrupt register and so that an
all zeroes Interrupt register value is not needed for INT_N to be deasserted.
Table 21. STATUS
(Address: 11h, Reset Value: 0000_0000b, Type: Read Only)
Bit #
Name
Size (Bits)
Bit#: Default
Description
7
AUTOSNK
1
7 0b
1:AUTOSNK mode is activated since the VDD voltage is lower
than AUTO_SNK_TH voltage
6
VSAFE0V
1
6 0b
1: Status to indicate VBUS_DET is below vSafe0V max of 0.8
Vpin
5:4
ORIENT[1:0]
2
5:4 00b
Status to indicate which CCx pins has the cable CC connection
00: No or unresolved connection detected
01: Cable CC is connected through the CC1 (A5) pin
10: Cable CC is connected through the CC2 (B5) pin
11: A fault has occurred during the detection
3
VBUSOK
1
3 0b
1: Status to indicate VBUS_DET is in the valid VBUS 5V range
2:1
BC_LVL[1:0]
2
2:1 00b
Thresholds that allow detection of current advertisement on CC
line
00: (Ra or unattached) Sink or unattached Source
01: Rd threshold for Sink default current advertisement
10: Rd threshold for Sink 1.5 A current advertisement
11: Rd threshold for Sink 3 A current advertisement
0
ATTACH
1
0 0b
1: Attached to a device or accessory of a type shown in the Type
register
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15
FUSB303B
Table 22. STATUS1
(Address: 12h, Reset Value: 0000_0000b, Type: Read Only)
Bit #
Name
Size (Bits)
Bit#: Default
Description
7:2
Reserved
6
7:2 00h
1
FAULT
1
1 0b
1: Status to indicate that as a Sink, CC has exceed the normal
vRd voltage range
0
REMEDY
1
0 0b
1: Status to indicate that FUSB303B is employing internal methods to achieve a stable attach
Do Not Use
Table 23. TYPE
(Address: 13h, Reset Value: 0000_0000b, Type: Read Only)
Bit #
Name
Size (Bits)
Bit#: Default
7
Reserved
1
7 0b
Do Not Use
6
DEBUGSRC
1
6 0b
1: FUSB303B is attached as a Source Debug Accessory
([Unoriented/Oriented]DebugAccessory.SRC)
5
DEBUGSNK
1
5 0b
1: FUSB303B is attached as a Sink Debug Accessory
(DebugAccessory.SNK)
4
SINK
1
4 0b
1: FUSB303B is attached as a Sink (Attached.SNK)
3
SOURCE
1
3 0b
1: FUSB303B is attached as a Source (Attached.SRC)
2
ACTIVECABLE
1
2 0b
1: FUSB303B is attached to an Active Cable (Ra detected)
1
AUDIOVBUS
1
1 0b
1: Indicates an Audio Accessory with VBUS has been detected
(AudioAccessory with VBUS)
0
AUDIO
1
0 0b
1: Indicates an Audio Accessory without VBUS has been
detected (AudioAccessory without VBUS)
Description
Table 24. INTERRUPT
(Address: 14h, Reset Value: 0000_0000b, Type: Read/Write 1 to Clear)
Bit #
Name
Size (Bits)
Bit#: Default
Description
7
Reserved
1
7 0b
Do Not Use
6
I_ORIENT
1
6 0b
1: Interrupt flagged whenever ORIENT changes from 0,0 to 0,1 or
1,0 but not 1,1. Interrupt not flagged when ORIENT is cleared.
5
I_FAULT
1
5 0b
1: Interrupt flagged when CC1 or CC2 voltage exceeds normal
Rd range when FUSB303B has Rd termination on CC1 and/or
CC2
4
I_VBUS_CHG
1
4 0b
1: Interrupt flagged when VBUS has crossed vVBUSthr or
vVBthLH thresholds
3
I_AUTOSNK
1
3 0b
1: Interrupt flagged when AUTOSNK mode has been activated or
deactivated
2
I_BC_LVL
1
2 0b
1: Interrupt flagged when a change in BC_LVL[1:0] advertised
current level has occurred
1
I_DETACH
1
1 0b
1: Interrupt flagged when a device or accessory has been
detached
0
I_ATTACH
1
0 0b
1: Interrupt flagged when a device or accessory of type indicated
in the Type register has been attached
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16
FUSB303B
Table 25. INTERRUPT1
(Address: 15h, Reset Value: 0000_0000b, Type: Read/Write 1 to Clear)
Bit #
Name
Size (Bits)
Bit#: Default
Description
7
Reserved
1
7 0b
Do Not Use
6
I_REM_VBOFF
1
6 0b
1: Interrupt to request VBUS be turned off and discharged while
executing internal methods to achieve stable attach
5
I_REM_VBON
1
5 0b
1: Interrupt to request VBUS be turned on while executing internal
methods to achieve stable attach
4
Reserved
1
4 0b
Do Not Use
3
I_REM_FAIL
1
3 0b
1: Interrupt to indicate that internal methods to achieve stable
attach have failed.
2
I_FRC_FAIL
1
2 0b
1: Interrupt to indicate that FORCE_SRC or FORCE_SNK has
failed to execute either because it was being forced into a state it
was already in or for other reasons
1
I_FRC_SUCC
1
1 0b
1: Interrupt to indicate that FORCE_SRC or FORCE_SNK has
successfully being executed.
0
I_REMEDY
1
0 0b
1: Interrupt to indicate that detection issues caused FUSB303B to
employ internal methods to achieve stable attach
ORDERING INFORMATION TABLE
Table 26. AVAILABLE PART NUMBERS
Part Number
Top Mark
Operating Temperature
Range
FUSB303BTMX
UN
−40 to 85°C
Package
12−Lead Ultra−thin Molded Leadless Package
(QFN) 1.6 mm x 1.6 mm x 0.375 mm
Packing
Method†
Tape and
Reel
†For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging
Specifications Brochure, BRD8011/D.
www.onsemi.com
17
MECHANICAL CASE OUTLINE
PACKAGE DIMENSIONS
X2QFN12 1.6x1.6, 0.4P
CASE 722AG
ISSUE A
DOCUMENT NUMBER:
DESCRIPTION:
98AON13772G
X2QFN12 1.6x1.6, 0.4P
DATE 26 SEP 2017
Electronic versions are uncontrolled except when accessed directly from the Document Repository.
Printed versions are uncontrolled except when stamped “CONTROLLED COPY” in red.
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