VIPER222
Datasheet
High voltage converter
Product status link
VIPER222
Product label
Features
• 730 V avalanche rugged power MOSFET
• PWM controller
• 1.2 V reference voltage
• Frequency jittering
• 40 mW no load input power at 230 V
AC
• Short-circuit protection
• Thermal shutdown
Application
• Auxiliary SMPS for home appliances, consumer, industrial, lighting.
Description
The VIPER222 device is a high performance high voltage converter that combines a
730 V rugged power MOSFET with a PWM control. The device embeds the high voltage startup and the current sense circuit, avoiding the use of extra components in the BoM. Frequency jittering spreads the EMI and allows the use of a small filter. The burst mode technique allows to obtain a very low input power consumption at light load.
Figure 1. Block diagram
Vcc DRAIN
Istart -up
OSCILLATOR
SOFT
START
EA-IN
1.2V
OCP
BLOCK
-
+
E/A
PWM
LOGIC
S Q
R
DIS
PROTECTIONS
Rsense
EA-OUT GND
DS13192 - Rev 2 - January 2020
For further information contact your local STMicroelectronics sales office.
www.st.com
1
VIPER222
Pin setting
Pin setting
SSOP10
1
2
3
4
5
6-10
Figure 2. Connection diagram
GND
VCC
NC
EA-IN
EA-OUT
1
2
3
4
5
10
9
8
7
6
DRAIN
DRAIN
DRAIN
DRAIN
DRAIN
Name
GND
VCC
NC
EA-IN
EA-OUT
DRAIN
Table 1. Pin description
Function
Connected to the source of the internal power MOSFET and controller ground reference.
Supply voltage of the control section. This pin provides the charging current of the external capacitor.
Not connected. The pin must be connected to GND pin.
Input of the error amplifier.
Output of the error amplifier.
High voltage drain pin. The start-up bias current is drawn from this pin too. Connect to a PCB copper area to facilitate the heat dissipation.
DS13192 - Rev 2 page 2/20
2
VIPER222
Typical power capability
Typical power capability
Table 2. Typical power
Adapter (1)
11 W
V
IN
: 230 V
AC
Open frame
13 W
(2)
Adapter
7 W
(1)
V
IN
: 85 - 265 V
AC
Open frame
8 W
1. Typical continuous power in non-ventilated enclosed adapter measured at 50 °C ambient.
2. Maximum practical continuous power in an open frame design at 50 °C ambient, with adequate heat-sinking
(2)
DS13192 - Rev 2 page 3/20
3
VIPER222
Electrical and thermal ratings
Electrical and thermal ratings
Table 3. Absolute maximum rating
Symbol
V
V
V
I
DS
D
EA-IN
EA-OUT
V
CC
Pin
6-10
6-10
4
5
2
Parameter
Drain-to-source (ground) voltage
Pulse drain current (limited by T
Input pin voltage
Out pin voltage
Supply voltage
J
= 150 °C)
Min.
-0.3
-0.3
-0.3
I
CC
P
TOT
T
J
T
STG
2 Input current
Power dissipation at T
AMB
< 50 °C
Junction temperature range
Storage temperature
-40
-55
1. When mounted on a standard single side FR4 board with 100 mm² (0.1552 inch) of Cu (35 μm thick)..
Value
Max.
730
2
4.8
4.8
Self limited
45
1
(1)
150
150
Unit
V
V
V
A
V mA
W
°C
°C
Table 4. Thermal data
Symbol
R
R
R
R
TH-JC
TH-JC
TH-JC
TH-JC
Parameter
Thermal resistance junction to case
(1)
(Dissipated power = 1 W)
Thermal resistance junction ambient
(1)
(Dissipated power = 1 W)
Thermal resistance junction to case
(2)
(Dissipated power = 1 W)
Thermal resistance junction ambient
(2)
(Dissipated power = 1 W)
Max. value
10
155
5
95
1. When mounted on a standard single side FR4 board with minimum copper area.
2. When mounted on a standard single side FR4 board with 100 mm 2 (0.155sq in) of Cu (35 μm thick).
Unit
°C/W
°C/W
°C/W
°C/W
DS13192 - Rev 2 page 4/20
DS13192 - Rev 2
VIPER222
Electrical and thermal ratings
1.75
Figure 3. Rth vs. area
R
THjA
/(R
THjA
@A=100 mm 2 )
1.625
1.5
1.375
1.25
1.125
1
0.875
0.75
0 25 50 75 100
A(mm 2 )
125 150 175 200 page 5/20
4
VIPER222
Electrical characteristics
Electrical characteristics
(TJ = 25 °C, VCC = 9 V; unless otherwise specified)
Symbol
V
BVDSS
C
OSS
I
DSS
V
START
I
CH1
I
CH3
V
CC
V
CLAMP
V
ON
V
CCL
V
OFF
I
CC0
R
DS(on)
I
CH2
I
CC1
I
CC_FAIL
I
LIM
I
LIM_BM
T
ON(MIN) t
RESTART t
OVL
Parameter
Breakdown voltage
Table 5. Electrical characteristics
Drain-Source ON state resistance
Test Condition
I
D
= 1 mA,
EA-OUT= GND
I
D
= 0.2 A;
T
J
= 25 °C
Effective (energy related) output capacitance
OFF state DRAIN leakage current
Drain-source start voltage
V
DRAIN
= 100 V
V
DRAIN
= 730 V
Startup charging current
Charging current during operation
Charging current during self-supply
V
DRAIN
= 100 V
V
CC
=0 V
V
DRAIN
= 100 V
V
CC
= 6 V
V
DRAIN
= 100 V
V
CC
= 6 V
Operating voltage range
VCC clamp voltage
VCC ON threshold
VCC low value
UVLO
Operating supply current, not switching
I
CC
= 35 mA
Operating supply current, switching
Not switching
V
DS
= 150 V
V
EA-OUT
= 1.2 V
F
OSC
= 30 kHz
V
DS
= 150 V
V
EA-OUT
= 1.2 V
F
OSC
= 60 kHz
VCC clamp protection
Drain current limit (OCP)
Drain current limit at low load
T
J
=25 °C
T
J
= 25 °C
V
EA-OUT
= V
EA_BM
Minimum turn ON time
Restart time after fault
Overload delay time
Min.
Typ.
Max.
Unit
730 V
-0.6
13
15 Ω
50
30
-1.4
pF
µA
V mA
-2 -4 mA
-6 -9
4.5
30
15
4
3.75
30
16
4.25
4
17
4.5
4.25
0.5
mA
V
V
V
V
V mA
1.3
1.6
mA
30
0.59
0.62
0.65
105 130 155
350
1.2
55 mA
A mA ns s ms
DS13192 - Rev 2 page 6/20
DS13192 - Rev 2
VIPER222
Electrical characteristics
Symbol Parameter t
OVLmax
Maximum overload delay time t
SS t
CC_FAIL
F
OSC
Soft-start time
Clamp time before shutdown
F
OSCmin
F
D
F
M
D
MAX
V
REF
I
PULL UP
G
M
V
EA-SAT
V
EA-BM
Switching frequency
Minimum switching frequency
Modulation depth
Modulationfrequency
Max. duty cycle
E/A reference voltage
EA-IN pin current pull-up
E/A Trans conductance
EA-OUT pin saturation limit
Burstmode threshold
R
DYN
Dynamic resistance
H
EA-OUT
I
EA-OUT
T
SD
ΔV
EA-OUT
/ ΔI
D
EA-OUT pin source / sink current
Thermal shutdown temperature
1. Specification assured by characterization.
VIPER222XSTR
VIPER222LSTR
(1)
(1)
(1)
Test Condition
VIPER222XSTR
F
OSC
= F
OSCmin
VIPER222LSTR
F
OSC
= F
OSCmin
(1)
V
EA-OUT
=2.7V
V
EA-IN
=GND
(1)
(1)
Min.
Typ.
Max.
Unit
220 ms
5
325
27
54
13.5
500
30
60
15
440
11
675
33
66
16.5
ms
µs kHz kHz
70
1.175
1.2
-1
0.5
3
0.8
±7
260
80
1.225
kHz
Hz
%
V
µA mA/V
V
V
65
3.8
150
100
160
7 kΩ
V/A
µA
°C page 7/20
VIPER222
Typical electrical characteristics
5
Typical electrical characteristics
1.15
I
LIM
/(I
LIM
@25°C)
Figure 4. I
FIG 4
J
1.1
1.05
1
0.95
0.9
-50 -25 0 25 50
T j
(°C)
75 100 125 150
1.5
I
CC0
/(I
CC0
@25°C)
Figure 6. I
CC0 vs. T
J
1.3
1.1
0.9
0.7
-50 -25 0 25 50
T j
(°C)
75 100 125 150
Figure 5. V
REF
vs. T
J
1.01
V
REF
/(V
REF
@25°C)
1.005
1
0.995
0.99
-50 -25 0 25 50
T j
(°C)
75 100 125 150
1.2
I
CC1
/(I
CC1
@25°C)
Figure 7. I
CC1
vs. T
J
1.1
1
0.9
0.8
-50 -25 0 25 50
T j
(°C)
75 100 125 150
Figure 9. V
BVDSS
vs. T j
1.2
V
BVDSS
/(V
BVDSS
@25°C)
2
1.5
Figure 8. R
DS(on) vs. T
J
2.5
R
DS(on)
/(R
DS(on)
@25°C)
1
0.5
0
-50 -25 0 25 50
T j
(°C)
75 100 125 150
1.1
1
0.9
-50 0 50
T j
(°C)
100 150
DS13192 - Rev 2 page 8/20
6
6.1
6.2
6.3
VIPER222
General description
General description
VIPER222 is a 730 V high voltage converter optimized for flyback and buck topologies that operates at 60 kHz
(L type) or 30 kHz (X type) switching frequency and integrates the jittering feature in order to reduce the EMI level.
The low IC consumption combined with the burst mode technique allow to obtain very low input power at no load and very good efficiency at light load.
Startup
At the first startup the integrated high voltage current source charges the VCC capacitor. At the beginning of startup, when the capacitor is fully discharged, the charging current is low, I
CH1
, in order to avoid IC damaging in case V
CC
is accidentally shorted to GND. As V
CC
exceeds 1 V, I
CH1
is increased to I
CH2
in order to speed up the charging. The charge current is stopped as soon as V
CC
reaches V
ON
.
As soon as the VCC capacitor is charged up to V
ON
, the high voltage current source is disabled, the device is powered by the energy stored in the capacitor and the primary MOSFET starts switching.
The internal soft-start function of the device progressively increases the cycle-by-cycle current limitation set point from zero up to I
LIM
in 8 steps. The soft-start time, t
SS
, is internally set at 8 ms. This function is activated at any attempt of converter startup and at any restart after a fault event.
Feedback loop
The device operates in current mode, so the primary current is internally sensed and converted in voltage that is applied to the non-inverting pin of the PWM comparator. The sensed voltage is compared through a voltage divider and on cycle-by-cycle basis with the one present on the EA-IN pin.
The OCP comparator works in parallel with the PWM comparator and it limits the primary current below the I
LIM
threshold.
There are two ways to close the loop and get the output regulated: through resistor divider or through external error amplifier plus optocoupler
Resistor divider
For non-isolated topologies (fly-back, buck or buck-boost converters) the output voltage can be directly set connecting a resistor divider (referenced to GND pin) between the converter output and the EA-IN pin, which is the inverting input of the integrated error amplifier (EA).
Primary side regulation can be realized connecting the resistor divider between VCC, EA-IN and GND pins.
The loop compensation network is connected across EA-OUT and GND pins.
External error amplifier plus optocoupler
In case of isolated fly-back, EA-IN must be connected to GND, which disables the internal error amplifier, and the output voltage is set through an external error amplifier (TL431 or similar) placed on the secondary side. Its error signal, reported to the primary through an optocoupler, is used to set the EA-OUT pin voltage to the value corresponding to the DRAIN peak current required by the control loop to deliver the given output power.
The EA-OUT pin dynamics range between the values V
EA-BM enters burst mode; above the V
EA-SAT
and V
EA-SAT
: below the V
EA-BM
level the device
level, the primary drain current reaches its limit I
LIM
.
Pulse skipping
The protection is intended to avoid the so called “flux-runaway” condition often present at converter startup, because of the low output voltage, and due to the fact that the primary MOSFET, cannot be turned off before the minimum on-time. During the on-time, the inductor is charged by the input voltage and if it cannot be discharged by the same amount during the off-time, in every switching cycle there is a net increase of the average inductor current, that can reach dangerously high values.
DS13192 - Rev 2 page 9/20
6.4
6.5
6.6
VIPER222
Burst mode at light load
Thanks to this protection, each time the DRAIN peak current exceeds I
LIM
level within t
ON_MIN
, one switching cycle is skipped. The cycles can be skipped until the minimum switching frequency F
OSCmin
(15 kHz typ.) is reached. Each time the DRAIN peak current does not exceed I
LIM
within t
ON_MIN
, one switching cycle is restored.
The cycles can be restored until the nominal switching frequency is reached, F
OSC
(30 or 60 kHz).
Burst mode at light load
When the load decreases, the feedback loop reacts lowering the EA-OUT pin voltage. If it goes below the V
EA-BM threshold, the DRAIN peak current is reduced to I
LIM_BM
, avoiding audible noise which could arise from low switching frequency. When the load is increased, V
EA_OUT
increases. As it reaches the V
EA_SAT
threshold, the
DRAIN peak current reaches its maximum value, I
LIM
.
Short-circuit protection
In case of overload or short-circuit on the output, the IC runs at I
LIM
.
If this condition is removed before 50ms, the IC continues its normal operation.
If this condition lasts for t
OVL
(50ms, typ.), the protection is tripped, the device stops switching for t
RESTART
(1 sec.
typ.), then resumes switching with soft-start phase. If the fault is still present, after t
OVL
, the IC is disabled again for t
RESTART
; otherwise it resumes normal operation.
If the converter is definitively operated at F
OSC_MIN
, (see
Section 6.3 ), the overload time will increase to
t
OVL_MAX
(100 ms typ. for VIPER222XSTR; 200 ms typ. for VIPER222LSTR).
During the fault event, the VCC voltage is maintained between V
CCL
(4.25 V) and V
ON
(16 V) by the periodical activation of the high voltage current source.
VCC clamp protection
If V
CC
reaches the clamp level V
CLAMP
and the current injected into the pin exceeds the internal threshold
I
CC_FAIL
for more than t
CC_FAIL
, a fault condition is detected. The PWM is disabled for t
RESTART
and then activated again in soft-start phase. The protection is disabled during the soft-start time.
DS13192 - Rev 2 page 10/20
7
Basic application schematics
Figure 10. Non isolated flyback converter
VIPER222
Basic application schematics
Figure 11. Primary side flyback converter
DS13192 - Rev 2 page 11/20
Figure 12. Isolated flyback converter
VIPER222
Basic application schematics
Figure 13. Buck converter
DS13192 - Rev 2
~ AC
Din Rin
Cin
Figure 14. Buck-Boost converter
VIPer222
VCC
EA-IN CONTROL
EA-OUT
DRAIN
GND
Cea_out2
Cea_out1
Rea_out1
Cvcc
Daux
R1
C2
R2 D2
Lout
Dout
Vout (< 0V)
Cout
GROUND page 12/20
8
8.1
VIPER222
Package information
Package information
In order to meet environmental requirements, ST offers these devices in different grades of ECOPACK ® packages, depending on their level of environmental compliance. ECOPACK ® specifications, grade definitions and product status are available at: www.st.com
.
ECOPACK ® is an ST trademark.
SSOP10 package information
Figure 15. SSOP10 package outline
DS13192 - Rev 2 page 13/20
Dim.
E
E1 e
H
L
K
A
A1
A2 b c
D
Table 6. SSO10 mechanical data
Min.
mm
Typ.
0.10
1.25
0.31
0.17
4.80
5.80
3.80
0.25
0.40
0°
4.90
6
3.90
1
Figure 16. SSOP10 recommended footprint
VIPER222
SSOP10 package information
Max.
1.75
0.25
0.51
0.25
5
6.20
4
0.50
0.90
8°
DS13192 - Rev 2 page 14/20
Order code
VIPER222XSTR
VIPER222LSTR
VIPER222
SSOP10 package information
Table 7. Ordering information
Package
SSOP10
SSOP10
Tape & Reel
Tape & Reel
Packaging
DS13192 - Rev 2 page 15/20
Revision history
Date
20-Dec-2019
17-Jan-2020
Table 8. Document revision history
Version
1
2
Changes
Initial release.
Changed min value ILIM parameter in
Table 5
VIPER222
DS13192 - Rev 2 page 16/20
VIPER222
Contents
Contents
1 Pin setting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
2 Typical power capability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
3 Electrical and thermal ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
4 Electrical characteristics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
5 Typical electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
6 General description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
6.1
Startup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
6.2
Feedback loop . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
6.3
Pulse skipping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
6.4
Burst mode at light load . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
6.5
Short-circuit protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
6.6
VCC clamp protection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
7 Basic application schematics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
8 Package information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
8.1
[Package name] package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
List of tables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
List of figures. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
DS13192 - Rev 2 page 17/20
VIPER222
List of tables
List of tables
Table 1. Pin description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Table 2. Typical power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Table 3. Absolute maximum rating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Table 4. Thermal data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Table 5. Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Table 6. SSO10 mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Table 7. Ordering information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Table 8. Document revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
DS13192 - Rev 2 page 18/20
VIPER222
List of figures
List of figures
Figure 1. Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Figure 2. Connection diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Figure 3. Rth vs. area . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Figure 4. I
LIM
vs. T
J
Figure 5. V
REF
vs. T
J
Figure 6. I
CC0 vs. T
J
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Figure 7. I
CC1
vs. T
J
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Figure 8. R
DS(on) vs. T
J
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Figure 9. V
BVDSS
vs. T j
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Figure 10. Non isolated flyback converter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Figure 11. Primary side flyback converter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Figure 12. Isolated flyback converter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Figure 13. Buck converter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Figure 14. Buck-Boost converter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Figure 15. SSOP10 package outline . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Figure 16. SSOP10 recommended footprint. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
DS13192 - Rev 2 page 19/20
VIPER222
IMPORTANT NOTICE – PLEASE READ CAREFULLY
STMicroelectronics NV and its subsidiaries (“ST”) reserve the right to make changes, corrections, enhancements, modifications, and improvements to ST products and/or to this document at any time without notice. Purchasers should obtain the latest relevant information on ST products before placing orders. ST products are sold pursuant to ST’s terms and conditions of sale in place at the time of order acknowledgement.
Purchasers are solely responsible for the choice, selection, and use of ST products and ST assumes no liability for application assistance or the design of
Purchasers’ products.
No license, express or implied, to any intellectual property right is granted by ST herein.
Resale of ST products with provisions different from the information set forth herein shall void any warranty granted by ST for such product.
ST and the ST logo are trademarks of ST. For additional information about ST trademarks, please refer to www.st.com/trademarks . All other product or service names are the property of their respective owners.
Information in this document supersedes and replaces information previously supplied in any prior versions of this document.
© 2020 STMicroelectronics – All rights reserved
DS13192 - Rev 2 page 20/20
