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부품번호 | OZ826 기능 |
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기능 | Dual-Phase DC-DC Controller | ||
제조업체 | O2Micro International | ||
로고 | |||
OZ826
Dual-Phase DC-DC Controller for AMD Mobile CPU
FEATURES
• Dual-phase DC-DC controller with integrated drivers
• 6 bit AMD VID codes compatible
• 1% output voltage accuracy
• 6V to 24V input supports 2s to 5s battery power
• Voltage Feed-Forward Compensation
• High efficiency, up to 94%
• High light-load efficiency: 80% at 200mA
• Non-audio skip mode
• Constant Ripple-Current topology facilitates optimum
inductor size
• Supports 60A output current
• Ultra-fast transient recovery
• Adjustable load line support
• Slew control at start-up and OTF VID changes
• True differential output voltage remote sensing
• AMD compliant Power Good signal
• VIN & VDDA Undervoltage Lockout Protection
• Latched over-voltage protection
• Cycle-by-cycle Overcurrent protection with latched
timeout
• Small, thin 5x5 QFN32 package
APPLICATIONS
Notebook CPU power supplies
ORDERING INFORMATION
Part Number
OZ826LN
Temp Range
0oC to 85oC
Package
32 QFN 5x5mm
GENERAL DESCRIPTION
OZ826 is a DC/DC controller specifically developed to
support the design of power supplies for AMD mobile
microprocessors supporting the 6 bit VID codes (see Table
1). Its high efficiency under both light and heavy load
conditions, DC accuracy, remote voltage sensing and
excellent transient response make it a good choice for low
voltage CPUs.
The core topology is based on a constant-ripple current
sync-buck controller with integrated drivers. The voltage
feed-forward compensation ensures a high rejection of
input voltage transients.
Overvoltage Protection (OVP) acts when the output voltage
exceeds the 1.8V threshold. This protection condition is
latched and the shutdown occurs. After an OVP event, the
EN pin should be toggled or VDDA cycled to restart the
circuit.
Under Voltage Lockout (UVLO) circuit monitors both VDDA
and VIN. Shut down occurs when VDDA falls below 4.2V
or VIN is less than typically 4.8V.
The output is protected against overload by a cycle-by-
cycle Overcurrent Protection (OCP) circuit. Its limit is user-
adjustable. Maximum OCP timeout is typically 1ms.
The Power Good (PG) signal is open drain unless the
output voltage drops more than 250mV off the set VID.
At start-up the output voltage ramps up in a controlled
manner with an externally adjustable slew rate.
SIMPLIFIED APPLICATION DIAGRAM
PIN DIAGRAM
www.DataSheet4U.com
07/31/08
Copyright © 2005-2008 by O2Micro
Patent #6,844,710
OZ826-SF-v1.0
All Rights Reserved
Page 1
OZ826
BILL OF MATERIALS
Item Qty
Reference
1 4 CIN1,CIN2,CIN3,CIN4
21
33
41
51
C3
C4, C12, C14
C6
C7,
62
C8, C10
73
C9, C11, C19
8 4 C15, C16, C17, C18
91
C20
10 1
C21
11 4 C22, C23, C24, C25
12 2
D1, D2
13 2
D3, D4
14 2
L1, L2
15 4 M1, M2, M5, M6
16 4 M3, M4, M7, M8
17 1
R1
18 2
R3, R9
19 1
R5
20 1
R8
21 1
R11
22 1
R12
23 1
R14
24 2
R16, R18
25 1
R17
26 1
U1
Value
10µF/25V
10nF/50V
220nF/10V
470nF/10V
22pF/10V
1µF/10V
10nF/10V
330µF/2.5V
100nF
1nF/10V
47uF/6.3V
MBR0540
15MQ040N
0.6µH/30A 1.5mΩ
BSC119N03S
BSC022N03S
1k
1.5k
22
2.2
35k
10k
15.8k
665
1.9k
OZ826
Vendor Part Number
C4532X7R1E106M TDK
250S43X5R106M Johanson Dielectrics
Ceramic – X7R or X5R
Ceramic – X7R or X5R
Ceramic – X7R or X5R
Ceramic – X7R or X5R
C1608X5R1A105K TDK
100R14X5R105M Johanson Dielectrics
Ceramic – X7R or X5R
SPCAP, POSCAP, OSCON
Ceramic – X7R or X5R
Ceramic – X7R or X5R
630S43X5R476MJohanson Dielectrics
International Rectifier, Vishay Siliconix
International Rectifier, Vishay Siliconix
FDH1055 0R56 TOKO
Infineon
Infineon
Any
Any
Any
Any
Any
Any
Any
Any
Any
O2Micro, Inc.
COMPONENT SUPPLIERS
Manufacturer
Phone
Power MOSFETs
Fairchild
Semiconductor
International
Rectifier
Siliconix (Vishay)
Philips
Infineon
888-522-5372 (USA)
310-322-3331 (USA)
203-268-6261 (USA)
408-474-8142 (USA)
858-526-2201 (USA)
Magnetics/Inductors
Coilcraft
800-322-2645 (USA)
Coiltronics
561-752-5000 (USA)
TOKO
858-675-8013 (USA)
Sumida
408-982-9660 (USA)
www.DataSheeCStaa4npUya.occiotomrs
Kemet
65-6281-3226 (Singapore)
408-986-0424 (USA)
Other Components
TDK
Taiyo Yuden
847-803-6100 (USA)
81-3-5201-7241 (Japan)
03-3667-3408 (Japan)
408-573-4150 (USA)
Contact Information
Website
www.fairchildsemi.com
www.irf.com
www.vishay.com
www.semiconductors.philips.com
www.infineon.com
www.coilcraft.com
www.coiltronics.com
www.tokoam.com
www.sumida.com
www.secc.co.jp
www.kemet.com
www.component.tdk.com
www.t-yuden.com
OZ826-SF-v1.0
Page 4
4페이지 OZ826
IMPORTANT NOTICE
No portion of O2Micro specifications/datasheets or any of its subparts may be reproduced in any form, or by any means,
without prior written permission from O2Micro.
O2Micro and its subsidiaries reserve the right to make changes to their datasheets and/or products or to discontinue any
product or service without notice, and advise customers to obtain the latest version of relevant information to verify, before
placing orders, that information being relied on is current and complete. All products are sold subject to the terms and
conditions of sale supplied at the time of order acknowledgment, including those pertaining to warranty, patent infringement,
and limitation of liability.
O2Micro warrants performance of its products to the specifications applicable at the time of sale in accordance with
O2Micro’s standard warranty. Testing and other quality control techniques are utilized to the extent O2Micro deems
necessary to support this warranty. Specific testing of all parameters of each device is not necessarily performed, except
those mandated by government requirements.
Customer acknowledges that O2Micro products are not designed, manufactured or intended for incorporation into any
systems or products intended for use in connection with life support or other hazardous activities or environments in which
the failure of the O2Micro products could lead to death, bodily injury, or property or environmental damage (“High Risk
Activities”). O2Micro hereby disclaims all warranties, and O2Micro will have no liability to Customer or any third party,
relating to the use of O2Micro products in connection with any High Risk Activities.
Any support, assistance, recommendation or information (collectively, “Support”) that O2Micro may provide to you
(including, without limitation, regarding the design, development or debugging of your circuit board or other application) is
provided “AS IS.” O2Micro does not make, and hereby disclaims, any warranties regarding any such Support, including,
without limitation, any warranties of merchantability or fitness for a particular purpose, and any warranty that such Support
will be accurate or error free or that your circuit board or other application will be operational or functional. O2Micro will have
no liability to you under any legal theory in connection with your use of or reliance on such Support.
COPYRIGHT © 2005-2008, O2Micro International Limited
www.DataSheet4U.com
OZ826-SF-v1.0
Page 7
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부품번호 | 상세설명 및 기능 | 제조사 |
OZ826 | Dual-Phase DC-DC Controller | O2Micro International |
DataSheet.kr | 2020 | 연락처 | 링크모음 | 검색 | 사이트맵 |