DN05044 - High Efficiency, <10 mW Standby PFC + QR Adapter

DN05044/D
High Efficiency, <10 mW
Standby PFC + QR Adapter
http://onsemi.com
Circuit Description
The NCP1937 is a combination controller which
integrates a power factor correction (PFC) and
quasi-resonant flyback controller in an SO−20 package. It
integrates all the functionality necessary to implement a
compact and highly efficient Switched Mode Power Supply
for an adapter application.
The PFC stage exhibits near-unity power factor while
operating in a Critical Conduction Mode (CrM) with a
maximum frequency clamp. The circuit incorporates all the
features necessary for building a robust and compact PFC
stage while minimizing the number of external components.
The quasi-resonant current-mode flyback stage features a
proprietary valley-lockout circuitry, ensuring stable valley
switching. This system works down to the 4th valley and
toggles to a frequency foldback mode with a minimum
frequency clamp beyond the 4th valley to eliminate audible
noise. Skip mode operation allows excellent efficiency in
light load conditions while consuming very low standby
power consumption.
Synchronous rectification is implemented on the
secondary side for increased efficiency with the NCP4304.
The NCP4355B is a secondary side CCCV controller that
detects no load conditions and communicates to the primary
controller enabling an ultra-low frequency skip mode for
reduced standby consumption. This enables the system to
achieve < 10 mW no load standby.
DESIGN NOTE
Key Features
 High-Voltage Startup Circuit and Active Input Filter








Capacitor Discharge Circuitry for Reduced Standby
Power
Integrated High-Voltage Switch Disconnects PFC
Feedback Resistor Divider to Reduce Standby Power
Low Consumption Power Savings Mode for Reduced
Standby Power
Adjustable PFC Disable Threshold Based on Output
Power
Fault Input for Severe Fault Conditions, NTC
Compatible (Latch and Auto-Recovery Options)
Boost Diode Short-Circuit Protection
Valley Switching Operation with Valley-Lockout for
Noise-Free Operation
Frequency Foldback with Minimum Frequency Clamp
for Low Standby Mode
Minimum Frequency Clamp Eliminates Audible Noise
Table 1. DEVICE DETAILS
Device
Application
Input Voltage
Output Power
Topology
I/O Isolation
NCP1937 R1
NCP4304
NCP4355
Adapter
90 to 264 Vac
Up to 85 W
PFC + QR Combo
Isolated
Table 2. OTHER SPECIFICATIONS
Output Specification
Output Voltage
Nominal Current
4.25 A
No Load Standby
< 10 mW
Min Current
Zero
 Semiconductor Components Industries, LLC, 2013
May, 2013 − Rev. 1
20 Vdc nominal
1
Publication Order Number:
DN05044/D
DN05044/D
CIRCUIT SCHEMATIC
http://onsemi.com
2
DN05044/D
MAGNETICS DESIGN − FLYBACK TRANSFORMER
http://onsemi.com
3
DN05044/D
MAGNETICS DESIGN − PFC INDUCTOR
http://onsemi.com
4
DN05044/D
EFFICIENCY PLOTS
Light Load Efficiency
Figure 1. Output Power vs. Efficiency − Light Load Efficiency
Average Efficiency
Figure 2. Output Power vs. Efficiency − Average Efficiency
http://onsemi.com
5
DN05044/D
DESCRIPTION OF KEY FEATURES
Power Savings Mode
The NCP1937 features a low consumption operating
mode called Power Savings Mode (PSM). PSM can be used
to achieve very low input power dissipation when the
application is operating at no load. When the controller
enters PSM it stops switching and shuts down much of its
functionality enabling the controller to operate with a bias
current of < 70 mA. While most of the controller’s functions
are shut off, the input filter capacitor discharge is required
to remain active should the application be unplugged.
In order to provide a bias supply for the capacitor
discharge function the controller regulates VCC to 11 V
(typical) by alternating turn-on of the high voltage startup
circuits. Each startup turns on once every line cycle when its
respective HV pin voltage exceeds 30 V (typical) provided
that VCC is below 11 V and the complementary startup had
turned on during the previous half cycle. The startup circuit
will shut off once VCC exceeds 11 V. There is no hysteresis
in the internal regulation loop ensuring that VCC will be
below its regulation level during the next half cycle. This
method of regulating VCC makes it possible to have a low
average voltage at the HV pins allowing the application to
achieve very low power dissipation.
Power Savings Mode Operation
Ch. 1 (Yellow): BOX2
Ch. 3 (Purple): HVX2
Ch. 4 (Green): VCC (AC Coupled)
Measured data with 2 wire connection
 4.82 mW at 115 VAC
 8.68 mW at 265 VAC
Figure 3. Power Saving Mode
Active X2 Capacitor Discharge
pins when the voltage on those pins becomes static. A line
removal timer is then initiated. 2) When the line removal
timer expires, drive pulses are halted and the VCC pin is
rapidly discharged. 3) Once VCC reaches VCC(off) the high
voltage startups are turned on transferring the stored charge
from the input filter capacitors onto the VCC capacitor. 4)
Being that the VCC capacitor is much larger than the filter
capacitors, the voltage on the filter capacitors will quickly
discharge to a safe level without restarting the controller.
The NCP1937 features integrated active input filter (X2)
capacitor discharge, eliminating the need for external
discharge resistors which are major contributors to the total
power dissipation in light load and standby mode operation.
The integrated discharge circuit is virtually lossless across
all operating modes and only consumes power when it is
needed to discharge the X2 capacitors.
The discharge circuit works in the following manner: 1)
Line voltage removal is detected at the HVX2 and BOX2
http://onsemi.com
6
DN05044/D
2
1
3
Ch. 1 (Yellow): VCC
Ch. 2 (Blue): QR FET DRV
Ch. 3 (Purple): VOUT
Ch. 4 (Green): BOX2 Pin
4
Figure 4. Active X2 Capacitor Discharge
Adjustable PFC Disable
PFC Disable
PFC Enable
VAC
IO
VAC
IO
90
2.5 A
90
3A
115
2.5 A
115
2.9 A
230
2.4 A
230
2.8 A
265
2.4 A
265
2.75 A
Ch. 1 (Yellow): QR FET Drain
Ch. 2 (Blue): QR FET DRV
Ch. 3 (Purple): PFC FET DRV
Ch. 4 (Green): PONOFF Voltage
Figure 5. Adjustable PFC Disable
http://onsemi.com
7
DN05044/D
output power. This voltage is then compared internally to a
reference voltage to determine when the PFC is enable and
disabled. Reference the NCP1937 Design Tool for
determining the values of the external resistor and capacitor.
A waveform of the voltage on the PONOFF pin with the
flyback switching waveforms is shown above
demonstrating the modulation and averaging of the
PONOFF current. Performance data from the demonstration
board is shown alongside the waveform. In this application
it was determined that enabling and disabling the PFC
between 50–75% (2.125–3.19 A) of the full rated load
provided the best average efficiency across the universal
line range.
In certain applications it is desired to turn the PFC
converter off at lighter loads to optimize the system’s overall
efficiency. The NCP1937 features integrated circuitry
which measures the output power of the flyback converter
and outputs a current proportional to the QR flyback’s
output power from the PONOFF pin. The current
proportional to output power is generated with a
voltage-to-current (V/I) converter which sets a DC current
based on the feedback voltage of the QR flyback. The DC
current from the V/I converter is then pulse width modulated
with a duty cycle equivalent to the demagnetization period
of the QR flyback. External to the controller, a resistor and
capacitor scale and average the current output from the
PONOFF pin into a voltage proportional to the system’s
POWER FACTOR
Figure 6. Power Factor vs. Output Power
http://onsemi.com
8
DN05044/D
Table 3. BILL OF MATERIALS FOR 20 W NCP1126/1129 FLYBACK
REF
DES
Qty.
Description
Value
Tolerance
Footprint
Manufacturer
Manufacturer PN
Substitution
C1, C2
2
Capacitor, Metallized
Polypropylene
0.22 mF, 450 V
5%
Through Hole,
10 mm
Panasonic
ECW−F2W224JAQ
No
C3
1
Capacitor, Electrolytic
82 mF, 450 V
20%
Through Hole,
7.5 mm
United Chemi-Con
EKXG451ELL820MMP1S
No
C4
1
Capacitor, Ceramic,
X7R
10 nF, 50 V
10%
SMD, 1206
Vishay
VJ1206Y103KXAAC
Yes
C5
1
Capacitor, Ceramic,
X7R
6800 pF, 630 V
20%
SMD, 1206
TDK
C3216X7R2J682M
No
C6
1
Capacitor, Ceramic,
X7R
100 pF, 1 kV
10%
SMD, 1206
Johanson’s
Dielectric
102R18W101KV4E
No
C7
0
PLACEHOLDER
PLACEHOLDER
SMD, 0603
PLACEHOLDER
PLACEHOLDER
Yes
C8
1
Capacitor, Electrolytic
47 mF, 35 V
20%
Through Hole,
2.5 mm
Kemet
ESH476M035AE3AA
No
C9
1
Capacitor, Ceramic,
COG
4.7 pF, 50 V
0.25 pF
SMD, 0603
TDK
C1608COG1H4R7C
Yes
C10
1
Capacitor, Ceramic,
X7R
1000 pF, 25 V
10%
SMD, 0603
Vishay
VJ0603Y102KXXCW1BC
Yes
C11,
C12,
C24
3
Capacitor, Ceramic,
X7R
0.1 mF, 50 V
10%
SMD, 0603
Yageo
CC0603KRX7R9BB104
Yes
C13
1
Capacitor, Ceramic,
X7R
2.2 mF, 10 V
10%
SMD, 0603
Taiyo Yuden
LMK107B7225KA−T
Yes
C14
1
Capacitor, Ceramic,
X7R
330 pF, 50 V
10%
SMD, 0603
Yageo
CC0603KRX7R9BB331
Yes
C15
1
Capacitor, Ceramic,
X7R
150 pF, 25 V
10%
SMD, 0603
AVX
06033C151KAT2A
Yes
C16,
C23
2
Capacitor, Ceramic,
X7R
0.47 mF, 50 V
10%
SMD, 0603
Taiyo Yuden
UMK107B7474KA−TR
Yes
C17
1
Capacitor, Ceramic,
X7R
100 pF, 25 V
10%
SMD, 0603
Vishay
VJ0603Y101KXXCW1BC
Yes
C18
1
Capacitor, Ceramic,
COG
47 pF, 50 V
10%
SMD, 0603
Vishay
VJ0603A470KXAAC
Yes
C19,
C20
2
Capacitor, Electrolytic
1000 mF, 35 V
20%
Through Hole,
5 mm
Panasonic
EEU-FM1V102
No
C21
1
Capacitor, Ceramic,
X7R
47 nF, 50 V
10%
SMD, 1206
Xicon
140-CC502B473K−RC
Yes
C22
1
Capacitor, Ceramic,
X7R
0.22 mF, 25 V
10%
SMD, 0805
Kemet
C0805C224K3RACTU
Yes
C25
1
Capacitor, Ceramic,
X7R
2.2 mF, 25 V
10%
SMD, 0805
TDK
TMK212B7225KG−TR
Yes
C26
1
Capacitor, Ceramic,
X7R
22 nF, 50 V
10%
SMD, 0603
TDK
C1608X7R1H223K
Yes
C27
1
Capacitor, Ceramic,
X7R
10 nF, 50 V
10%
SMD, 0603
Murata
GRM188R71H103KA01D
Yes
C28
1
Capacitor, Electrolytic
100 mF, 35 V
20%
Through Hole,
2.5 mm
Kemet
ESH107M035AE3AA
Yes
C29
0
Capacitor, Ceramic,
X7R
PLACEHOLDER
SMD, 0603
PLACEHOLDER
PLACEHOLDER
Yes
C30
1
Capacitor, Ceramic,
X5R
10 mF, 35 V
SMD, 1206
Taiyo Yuden
GMK316BJ106KL−T
Yes
C31
0
Capacitor, Ceramic,
X7R
PLACEHOLDER
SMD, 0603
PLACEHOLDER
PLACEHOLDER
Yes
C32
1
Capacitor, Ceramic,
COG
33 pF, 50 V
5%
SMD, 0603
Murata
GRM1885C1H330JA01D
Yes
CX1,
CX2
2
Capacitor, Metallized
Polypropylene
100 nF,
275 VAC
10%
Through Hole,
10 mm
Kemet
PHE840MA6100KA04
Yes
CY1,
CY2,
CY3
3
Capacitor, Ceramic,
X1Y2
1000 pF,
250 VAC
20%
Through Hole,
5 mm
Murata
DE2E3KY102MA2BM01
Yes
D1, D2
2
Diode, Standard
Recovery
1000 V, 1 A
SMD, SMA
ON Semiconductor
MRA4007T3G
Yes
D3
1
Diode, Standard
Recovery
600 V, 3 A
Through Hole,
Axial,
DO−201AA
ON Semiconductor
1N5406G
No
10%
http://onsemi.com
9
DN05044/D
Table 3. BILL OF MATERIALS FOR 20 W NCP1126/1129 FLYBACK (continued)
REF
DES
Qty.
Description
Value
Footprint
Manufacturer
Manufacturer PN
Substitution
D4
1
Diode, Switchmode
Rectifier
520 V, 5 A
Through Hole,
Axial,
DO−201AA
ON Semiconductor
MUR550APFG
No
D5, D6,
D8, D9,
D10,
D11,
D19
7
Diode, Switching
100 V, 200 mA
SMD, SOD−123
ON Semiconductor
MMSD4148T1G
Yes
D7
1
Diode, Standard
Recovery
1000 V, 1.5 A
SMD, SMB
Vishay
S2M-E3/52T
No
D12,
D13,
D18
3
Diode, Switching
250 V, 100 mA
SMD, SOD−123
ON Semiconductor
MMSD103T1G
Yes
D14
1
Diode, Zener
27 V, 500 mW
SMD, SOD−123
ON Semiconductor
MMSZ5254BT1G
Yes
D15
1
Diode, Schottky,
100 V, 5 A
SMD, SO−8FL
ON Semiconductor
MBR5H100MFST1G
No
D16
1
Diode, Bridge
Rectifier
600 V, 4 A
Through Hole,
GBU
Diodes Inc
GBU406
Yes
D17
1
Diode, Zener
7.5 V, 500 mW
SMD, SOD−123
ON Semiconductor
MMSZ5236BT1G
Yes
F1
1
Fuse
250 VAC, 3 A
Through Hole
Littelfuse
0224003.HXP
No
J1
1
Terminal Block, 3 pos,
in-line
250 V, 16 A
Through Hole,
5mm
On Shore
Technology
OSTTA030161
Yes
J2
1
Header, 2 pos, in-line,
right angle
250 V, 12 A
Through Hole,
5mm
Phoenix Contact
1757475
Yes
J2A
1
Terminal Block, 2 pos,
plug
250 V, 12 A
N/A
Phoenix Contact
1754449
Yes
L1
1
Inductor, Common
mode choke
4 mH, 1.5 A
Through Hole
Wurth Electronics
744 821 240
No
L2
1
Inductor, Common
mode choke
20 mH, 0.5 A
Through Hole
Wurth Electronics
744 822 120
No
L3
1
Inductor, Differential
choke
300 mH, 2 A
Through Hole
Wurth Electronics
744 706 0
No
L4
1
Inductor, PFC boost
390 mH, 3.5 A
Through Hole,
RM10, Custom
Wurth Electronics
750313048 rev2
No
M1
1
MOSFET, PFC
Switch
600 V, 12 A
TO−220FP
Toshiba
TK12A60U
No
M2
1
MOSFET, QR Switch
650 V, 10.6 A
TO−220FP
Infineon
IPA65R380C6
No
M3
1
MOSFET,
Synchronous Rectifier
100 V, 100 A
TO−220
Infineon
IPP045N10N3
No
MOV1
1
MOV
300 VAC, 2.5 kA
Through Hole,
10 mm
Epcos
S10K300
Yes
Q1
1
MOSFET, Small
signal
PMOS, 50 V
SMD, SOT23−3
ON Semiconductor
BSS84LT1G
Yes
R1, R2
2
Resistor, 1/4 W
1 kW
SMD, 1206
Stackpole
RMCF1206FT1K00
Yes
R3,
R3A,
R3B,
R3C
4
Resistor, 1/2 W
0.5 W
SMD, 1206
Stackpole
CSR1206FKR500
Yes
R4,
R12,
R51
3
Resistor 1/10 W
10 kW
1%
SMD, 0603
Stackpole
RMCF0603FT10K0
Yes
R5
1
Resistor, 1/4 W
8.06 kW
1%
SMD, 1206
Stackpole
RMCF1206FT8K06
Yes
R6
1
Resistor 1/10 W
8.06 kW
1%
SMD, 0603
Stackpole
RMCF0603FT8K06
Yes
R7
1
Resistor, 1/8 W
47.5 W
1%
SMD, 0805
Stackpole
RMCF0805FT47R5
Yes
R8
1
Resistor, 1/8 W
4.75 W
1%
SMD, 0805
Stackpole
RMCF0805FT4R75
Yes
R9
1
Resistor, 1/8 W
20 W
1%
SMD, 0805
Stackpole
RMCF0805FT20R0
Yes
R10,
R28,
R49
3
Resistor, 1/4 W
20 W
1%
SMD, 1206
Stackpole
RMCF1206FT20R0
Yes
R11
1
Resistor, 1/4 W
8.25 W
1%
SMD, 1206
Yageo
RC1206FR-078R25L
Yes
REF
DES
QTY
Description
Value
Tolerance
Footprint
Manufacturer
Manufacturer PN
Substit
ution
Tolerance
1%
http://onsemi.com
10
DN05044/D
Table 3. BILL OF MATERIALS FOR 20 W NCP1126/1129 FLYBACK (continued)
REF
DES
Qty.
Description
Value
Tolerance
Footprint
Manufacturer
Manufacturer PN
Substitution
R13,
R13A
2
Resistor, 1 W
0.4 W
1%
SMD, 2512
Yageo
PT2512FK−070R4L
No
R14
1
Resistor, 1/10 W
249 W
1%
SMD, 0603
Stackpole
RMCF0603FT249R
Yes
R15,
R16
2
Resistor, 1/4 W
1.62 MW
1%
SMD, 1206
Yageo
RC1206FR-071M62L
Yes
R17
1
Resistor, 1/8 W
118 kW
1%
SMD, 0805
Stackpole
RMCF0805FT118K
Yes
R18
1
Resistor, 1/10 W
34 kW
1%
SMD, 0603
Stackpole
RMCF0603FT34K0
Yes
R19
1
Resistor, 1/10 W
20 kW
1%
SMD, 0603
Stackpole
RMCF0603FT20K0
Yes
R20
1
Resistor, 1/10 W
499 kW
1%
SMD, 0603
Stackpole
RMCF0603FT499K
Yes
R21,
R31
2
Resistor, 1/10 W
0W
SMD, 0603
Yageo
RC0603JR−070RL
Yes
R22
1
Resistor, 1/4 W
5.11 MW
1%
SMD, 1206
Yageo
RC1206FR−075M11L
Yes
R23
1
Resistor, 1/10 W
750 kW
1%
SMD, 0603
Stackpole
RMCF0603FT750K
Yes
R24
1
Resistor, 1/10 W
80.6 kW
1%
SMD, 0603
Stackpole
RMCF0603FT80K6
Yes
R25,
R27
2
Resistor, 1/8 W
2 kW
1%
SMD, 0805
Stackpole
RMCF0805FT2K00
Yes
R26
1
Resistor, 1/8 W
1 MW
1%
SMD, 0805
Stackpole
RMCF0805FT1M00
Yes
R29,
R30
2
Resistor, 1/10 W
15 kW
1%
SMD, 0603
Stackpole
RMCF0603FT15K0
Yes
R32
1
Resistor, 1/10 W
267 W
1%
SMD, 0603
Yageo
RC0603FR−07267RL
Yes
R33
1
Resistor, 1/10 W
453 kW
1%
SMD, 0603
Stackpole
RMCF0603FT453K
Yes
R34
1
Resistor, 1/10 W
90.9 kW
1%
SMD, 0603
Stackpole
RMCF0603FT90K9
Yes
R35
1
Resistor, 1/10 W
200 kW
1%
SMD, 0603
Stackpole
RMCF0603FT200K
Yes
R36,
R37
2
Resistor, 1/10 W
14.3 kW
1%
SMD, 0603
Stackpole
RMCF0603FT14K3
Yes
R38
1
Resistor, 1/10 W
2.32 kW
1%
SMD, 0603
Stackpole
RMCF0603FT2K32
Yes
R39
1
Resistor, 1/10 W
1 kW
1%
SMD, 0603
Yageo
RC0603FR−071KL
Yes
R40
1
Resistor, 1/4 W
0W
SMD, 1206
Yageo
RC1206JR−070RL
Yes
R41
1
Resistor, 1/10 W
10 W
1%
SMD, 0603
Stackpole
RMCF0603FT10R0
Yes
R42,
R43,
R44,
R45
4
Resistor, 1/4 W
100 kW
1%
SMD, 1206
Stackpole
RMCF1206FT100K
Yes
R50
1
Resistor, 1/8W
10 kW
5%
Through Hole
Stackpole
CF18JT10K0
Yes
R52
0
Resistor 1/10 W
PLACEHOLDER
SMD, 0603
PLACEHOLDER
PLACEHOLDER
Yes
R53
1
Resistor 1/10 W
35.7 kW
1%
SMD, 0603
Stackpole
RMCF0603FT35K7
Yes
RT1
1
NTC Thermistor
220 K, 500 mW
5%
Through Hole,
2.54 mm
Vishay
NTCLE100E3224JB0
No
RT2
1
NTC Inrush Current
Limiter
15 W
Through Hole,
10 mm
Epcos
B57153S0150M000
Yes
TX1
1
Flyback Transformer
500 mH, 4 A
Through Hole,
PQ32, Custom
Wurth Electronics
750313054 rev02
No
U1
1
Controller, PFC - QR
Combo
SMD,
SOIC−20NB,
1 mm
ON Semiconductor
NCP1937A
No
U2
1
Optocoupler
120 V, 60 mA
Through Hole,
PDIP4
NEC
PS2513−1−A
No
U3
1
Optocoupler
70 V, 30 mA
Through Hole,
PDIP4
NEC
PS2561A−1
Yes
U4
1
Controller, Secondary
side
SOIC−8
ON Semiconductor
NCP4355B
No
U5
1
Synchronous
rectification driver
SOIC−8
ON Semiconductor
NCP4304A
No
http://onsemi.com
11
DN05044/D
DEMO BOARD
http://onsemi.com
12
DN05044/D
REFERENCES
[1] Data Sheet NCP1937/D
[2] Data Sheet NCP4355/D
[3] Data Sheet NCP4304/D
ON Semiconductor and
are registered trademarks of Semiconductor Components Industries, LLC (SCILLC). SCILLC owns the rights to a number of patents, trademarks,
copyrights, trade secrets, and other intellectual property. A listing of SCILLC’s product/patent coverage may be accessed at www.onsemi.com/site/pdf/Patent−Marking.pdf. SCILLC
reserves the right to make changes without further notice to any products herein. SCILLC makes no warranty, representation or guarantee regarding the suitability of its products for any
particular purpose, nor does SCILLC assume any liability arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without
limitation special, consequential or incidental damages. “Typical” parameters which may be provided in SCILLC data sheets and/or specifications can and do vary in different applications
and actual performance may vary over time. All operating parameters, including “Typicals” must be validated for each customer application by customer’s technical experts. SCILLC
does not convey any license under its patent rights nor the rights of others. SCILLC products are not designed, intended, or authorized for use as components in systems intended for
surgical implant into the body, or other applications intended to support or sustain life, or for any other application in which the failure of the SCILLC product could create a situation where
personal injury or death may occur. Should Buyer purchase or use SCILLC products for any such unintended or unauthorized application, Buyer shall indemnify and hold SCILLC and
its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, directly or indirectly,
any claim of personal injury or death associated with such unintended or unauthorized use, even if such claim alleges that SCILLC was negligent regarding the design or manufacture
of the part. SCILLC is an Equal Opportunity/Affirmative Action Employer. This literature is subject to all applicable copyright laws and is not for resale in any manner.
PUBLICATION ORDERING INFORMATION
LITERATURE FULFILLMENT:
Literature Distribution Center for ON Semiconductor
P.O. Box 5163, Denver, Colorado 80217 USA
Phone: 303−675−2175 or 800−344−3860 Toll Free USA/Canada
Fax: 303−675−2176 or 800−344−3867 Toll Free USA/Canada
Email: orderlit@onsemi.com
N. American Technical Support: 800−282−9855 Toll Free
USA/Canada
Europe, Middle East and Africa Technical Support:
Phone: 421 33 790 2910
Japan Customer Focus Center
Phone: 81−3−5817−1050
http://onsemi.com
13
ON Semiconductor Website: www.onsemi.com
Order Literature: http://www.onsemi.com/orderlit
For additional information, please contact your local
Sales Representative
DN05044/D