ADP3157, ADP3157ENG, ADP3157J
MFG:AD Package Cooled:99+;98 D/C:1680
Table of contents:
Part Number: ADP3157
MFG: AD
Package Cooled: 99+;98
D/C: 1680
ADP3157 Supplier
ADP3157
MFG: ADI Package Cooled: SOP Qty: 12
Contact: Mr.MIKEHU 
Tel: 86-755-83205231
Adddate: 2010-03-17
ADP3157
Package Cooled: AD D/C: 98 Qty: 94
Asia World Trade Technology Source 
Contact: Ms.BoningTan
Tel: 086-0755-25573524
Adddate: 2010-03-17
ADP3157
MFG: AD Package Cooled: SOP D/C: 98 Qty: 94
Asia World Trade Technology Source
Contact: Ms.BoningTan
Tel: 086-0755-25573524
Adddate: 2010-03-17
ADP3157
MFG: AD Package Cooled: SOP D/C: 08+ Qty: 5000
SHENZHEN ZHENGRUN ELECTRONICS CO., LTD.
Contact: Ms.helen
Tel: 86-755-82724686
Adddate: 2010-03-17
ADP3157
MFG: AD D/C: 05+ Qty: 94 Note: New & Original/stock
SHENZHEN MINGJIADA ELECTRONICS CO.,LTD
Contact: Mr.chen
Tel: 86-0755-83957301
Adddate: 2010-03-17
ADP3157
MFG: AD Package Cooled: SOP16 D/C: 04+ Qty: 118 Note: STOCK
HONGKONG WILWIN TECHNOLOGY LIMITED
Contact: Ms.Carolyang
Tel: 86-755-82976956
Adddate: 2010-03-17
ADP3157
MFG: N/A Package Cooled: 118
Contact: Ms.RebeccaMiao
Tel: 86-10-58816651/58816653
Adddate: 2010-03-17
ADP3157
D/C: 08+/09+ Qty: 138000 Note: New and original
Contact: Mr.TIM WU
Tel: 86-0755-88396385
Adddate: 2010-03-17
About ADP3157
PDF/DataSheet Download
Datasheet: ADP3157
File Size: 177592 KB
Manufacturer: AD [Analog Devices]
Download : Click here to Download
ADP3157J Supplier
ADP3157J
MFG: AD Package Cooled: SMD D/C: 05+ Qty: 1000
BEST ELECTRONICS (HK) CO., LTD
Contact: Ms.Matt yan
Tel: 86-755-82534291
Adddate: 2010-03-17
ADP3157J
MFG: ADI Package Cooled: SOP D/C: 99+ Qty: 57
Contact: Mr.MIKEHU
Tel: 86-755-83205231
Adddate: 2010-03-17
ADP3157J
MFG: AD Package Cooled: SOP-16 Qty: 58
Contact: Ms.SUSIE CHEN
Tel: 86-755-28536689
Adddate: 2010-03-17
ADP3157J
MFG: AD Package Cooled: SOP Qty: 30
Contact: Ms.Lisa
Tel: 86-755-82722885
Adddate: 2010-03-17
ADP3157J
MFG: SOP16 Package Cooled: AD D/C: 2005+ Qty: 2100
Contact: Ms.Shadow
Tel: 0086-0755-83041711
Adddate: 2010-03-17
ADP3157J
MFG: AD D/C: SOP16 Qty: 400
Kailiyuan Technology International Co.,Ltd
Contact: Mr. BillyYan
Tel: 86-755-82533677
Adddate: 2010-03-17
ADP3157J
Package Cooled: 2000 D/C: SOP Qty: AD
Asia World Trade Technology Source
Contact: Ms.BoningTan
Tel: 086-0755-25573524
Adddate: 2010-03-17
ADP3157J
MFG: 2000 Package Cooled: 25 D/C: SOP Qty: AD
Asia World Trade Technology Source
Contact: Ms.BoningTan
Tel: 086-0755-25573524
Adddate: 2010-03-17
About ADP3157JR
PDF/DataSheet Download
Datasheet: ADP3157JR
File Size: 177592 KB
Manufacturer: AD [Analog Devices]
Download : Click here to Download
ADP3157ENG Supplier
ADP3157ENG
MFG: AD Package Cooled: SOP D/C: 9841 Qty: 1500 Note: new and original stock!
Minshunxin Electronics Co.,LTD.
Contact: Mr.Zhong
Tel: 86-755-82579485
Adddate: 2010-03-17
ADP3157ENG
MFG: AD Package Cooled: SOP D/C: 06+ Qty: 3650 Note: special supplier for wirless digital communication goods
Zhengxinyuan ELectronics(HongKong)Co.LTD
Contact: Ms.ELLACHEN
Tel: 086-0755-88822655
Adddate: 2010-03-17
ADP3157ENG
MFG: TOSHIBA Package Cooled: SOP D/C: 48 Qty: 01+
Contact: Ms.cheungtrammy
Tel: 86-755-823230734
Adddate: 2010-03-17
ADP3157ENG
MFG: AD D/C: 9841 Qty: 48
Contact: Ms.LaneyaTao
Tel: 86-755-82518965 / 82518105
Adddate: 2010-03-17
ADP3157ENG
MFG: AD Qty: 9204
Contact: Ms.TinaXia
Tel: 86-755-33063502
Adddate: 2010-03-17
ADP 08S
MFG: ALCO Package Cooled: SMD-8 Qty: 872
Contact: Ms.shirley
Tel: 86-755-82529111
Adddate: 2010-03-17
ADP-0001
MFG: SAMSUNG Package Cooled: QFP3232-240 D/C: 00+ Qty: 14000
hk chishing electronics company
Contact: Ms.Lee Maggie
Tel: 86-755-61303995
Adddate: 2010-03-17
About ADP1
PDF/DataSheet Download
Datasheet: ADP1
File Size: 73864 KB
Manufacturer: ETC [ETC]
Download : Click here to Download
ADP3157 General Description
The ADP3157 is a highly efficient synchronous buck switching regulator controller optimized for converting the 5 V main supply into the core supply voltage required by the Pentium III and other high performance processors. The ADP3157 uses an internal 5-bit DAC to read a voltage identification (VID) code directly from the processor, which is used to set the output voltage between 1.3 V and 3.5 V. The ADP3157 uses a current mode, constant off-time architecture to drive two external Nchannel MOSFETs at a programmable switching frequency that can be optimized for size and efficiency. It also uses a unique supplemental regulation technique called active voltage positioning to enhance load transient performance.
Active voltage positioning results in a dc/dc converter that meets the stringent output voltage specifications for Pentium II and Pentium III processors, with the minimum number of output capacitors and smallest footprint. Unlike voltage-mode and standard current-mode architectures, active voltage positioning
adjusts the output voltage as a function of the load current so that it is always optimally positioned for a system transient. The ADP3157 provides accurate and reliable short circuit protection and adjustable current limiting. It also includes an integrated overvoltage crowbar function to protect the microprocessor from destruction in case the core supply exceeds the nominal programmed voltage by more than 15%.
ADP3157 Maximum Ratings
VID0–VID4, SD, PWRGD, CMP, CT . . . . . . . –0.3 V to VCC
DRIVE1, DRIVE2, SENSE+, SENSE– . . . . . .–0.3 V to VCC
Operating Ambient Temperature Range . . 0°C to +70°C
Junction Temperature Range . . . . . . . . . 0°C to +150°C
θJA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 110°C/W
Storage Temperature Range . . . . . . . –65°C to +150°C
Lead Temperature (Soldering, 10 sec) . . . . . . . +300°C
ADP3157 Features
Active Voltage Positioning with Gain and Offset Adjustment
Optimal Compensation for Superior Load Transient Response
VRM 8.2, VRM 8.3 and VRM 8.4 Compliant
5-Bit Digitally Programmable 1.3 V to 3.5 V Output
Dual N-Channel Synchronous Driver
Total Output Accuracy 61% Over Temperature
High Efficiency, Current-Mode Operation
Short Circuit Protection
Overvoltage Protection Crowbar Protects Microprocessors with No Additional External Components
Power Good Output
SO-16 Package
ADP3157 Typical Application
Desktop PC Power Supplies for:
Pentium II and Pentium III Processor Families
AMD-K6 Processors
VRM Modules
ADP3157 Connection Diagram
