參數資料
型號: ADP3152AR
廠商: ANALOG DEVICES INC
元件分類: 穩(wěn)壓器
英文描述: ECONOLINE: REC3-S_DRW(Z)/H4,H6 - Safety standards and approval: EN 60950 certified, rated for 250VAV (LVD test report)- Applied for Ul 1950 Component Recognised Certification- 3W DIP Package- 4kVDC & 6kVDC Isolation- Regulated Output- Continuous Short Circiut Protection Auto-Restarting
中文描述: SWITCHING CONTROLLER, 250 kHz SWITCHING FREQ-MAX, PDSO16
封裝: SOIC-16
文件頁數: 1/12頁
文件大?。?/td> 274K
代理商: ADP3152AR
REV. 0
Information furnished by Analog Devices is believed to be accurate and
reliable. However, no responsibility is assumed by Analog Devices for its
use, nor for any infringements of patents or other rights of third parties
which may result from its use. No license is granted by implication or
otherwise under any patent or patent rights of Analog Devices.
a
ADP3152
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781/329-4700
World Wide Web Site: http://www.analog.com
Fax: 781/326-8703
Analog Devices, Inc., 1998
5-Bit Programmable Synchronous
Switching Regulator Controller
for Pentium
II Processor
FEATURES
5-Bit Digitally Programmable 1.8 V to 3.5 V Output
Voltage
Dual N-Channel Synchronous Driver
Total Output Accuracy
6
1% (0
8
C to 70
8
C)
High Efficiency
Current-Mode Operation
Short Circuit Protection
Power Good Output
Integrated Overvoltage Protection Crowbar
16-Lead SOIC Package
VRM 8.2 Compatible
APPLICATIONS
Desktop PC Power Supply for:
Pentium II Processor
Pentium Pro Processor
Pentium Processor
AMD–K6 Processor
VRM Modules
GENERAL DESCRIPTION
The ADP3152 is a highly efficient synchronous switching regu-
lator controller optimized for Pentium II Processor applications
where 5 V is stepped down to a digitally controlled output volt-
age between 1.8 V and 3.5 V. Using a 5-bit DAC to read a
voltage identification (VID) code directly from the processor,
the ADP3152 uses a current mode constant off-time architec-
ture to generate its precise output voltage.
The ADP3152 drives two N-channel MOSFETS in a synchro-
nous rectified buck converter, at a maximum switching fre-
quency of 250 kHz. Using the recommended loop compensation
and guidelines, the ADP3152 provides a dc/dc converter that
meets Intel’s stringent transient specifications with a minimum
number of output capacitors and smallest footprint. Additionally,
the current mode architecture also provides guaranteed short
circuit protection and adjustable current limiting.
V
CC
SD
DRIVE1
SENSE+
SENSE–
DRIVE2
PGND
VID0–VID4
AGND
C
T
CMP
V
+12V
1
m
F
22
m
F
R1
R2
150pF
5-BIT CODE
IRL3103
V
IN
+5V
+C
IN
10BQ015
L
2.5
m
H
IRL3103
+C
O
V
1.8V–3.5V
14A
R
6.7m
V
1nF
ADP3152
C
COMP
Figure 1. Typical Application
Pentium is a registered trademark of Intel Corporation.
All other trademarks are the property of their respective holders.
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