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參數(shù)資料
| 型號： | ADM1051JR |
| 廠商： | ANALOG DEVICES INC |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | Precision Dual Voltage Regulator Controllers |
| 中文描述： | DUAL SWITCHING CONTROLLER, PDSO8 |
| 封裝： | SOIC-8 |
| 文件頁數(shù)： | 1/10頁 |
| 文件大?。?/td> | 176K |
| 代理商： | ADM1051JR |
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
ADM1051/ADM1051A
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., 2000
Precision Dual Voltage
Regulator Controllers
FUNCTIONAL BLOCK DIAGRAM
SHDN1
V
CC
50 A
BANDGAP
REFERENCE
HICCUP
COMPARATOR
100 F
2 100 F
V
OUT1
CONTROL
AMPLIFIER
FORCE 1
SENSE 1
ADM1051/ADM1051A
SHDN2
HICCUP
COMPARATOR
GND
V
CC
V
IN
3.3V
CONTROL
AMPLIFIER
FORCE 2
SENSE 2
V
CC
SHUTDOWN
CONTROL
100 F
2 100 F
V
OUT2
V
IN
3.3V
SHUTDOWN
CONTROL
V
CC
50 A
CLK/DELAY
GENERATOR
POWER-ON
RESET
CLOCK
OSCILLATOR
NO CONNECTION
ON ADM1051A
FEATURES
Two Independent Controllers on One Chip
1.515 V and 1.818 V Outputs
Shutdown Inputs to Control Each Channel
Compatible with PC Motherboard TYPEDET Signal
2.5% Accuracy Over, Line, Load, and Temperature
Low Quiescent Current
Low Shutdown Current
Works with External N-Channel MOSFETs for Low Cost
“Hiccup Mode” Fault Protection
No External Voltage or Current Setting Resistors
1.8 V/3.3 V ICH Sequenced Power-Up on ADM1051A
Small, 8-Lead SOIC Package
APPLICATIONS
Desktop Computers
Servers
Workstations
GENERAL DESCRIPTION
The ADM1051/ADM1051A are dual, precision, voltage regula-
tor controllers intended for power rail generation and active bus
termination on personal computer motherboards. They contain a
precision 1.2 V bandgap reference and two channels consisting of
control amplifiers driving external power devices. Each channel
has a shutdown input to turn off amplifier output and Hiccup
Mode protection circuitry for the external power device. The
shutdown input on the 1.5 V channel can also be used with the
TYPEDET signal on a PC motherboard to select the output voltage.
The ADM1051/ADM1051A operate from a 12 V supply, which
gives sufficient headroom for the amplifiers to drive external
N-channel MOSFETs, operating as source-followers, as the
external series pass devices. This has the advantage that N-
channel devices are cheaper than P-channel devices of similar
performance, and the circuit is easier to stabilize than one using
P-channel devices in a common-source configuration.
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| ADM1051JR-REEL | 制造商:Analog Devices 功能描述:DC DC CNTRLR DUAL-OUT STEP DOWN 12V 8SOIC N - Tape and Reel 制造商:Rochester Electronics LLC 功能描述:DUAL BUS TERMINATOR - Tape and Reel |
| ADM1051JR-REEL7 | 制造商:Analog Devices 功能描述:DC DC Cntrlr Dual-OUT Step Down 12V Input 8-Pin SOIC N T/R 制造商:Analog Devices 功能描述:DC DC CNTRLR DUAL-OUT STEP DOWN 12V 8SOIC N - Tape and Reel |
| ADM1052 | 制造商:AD 制造商全稱:Analog Devices 功能描述:Precision Dual Voltage Regulator Controller |
| ADM1052JR | 制造商:Analog Devices 功能描述:DC DC Cntrlr Dual-OUT Prog Sw 3.3V Input 8-Pin SOIC 制造商:Rochester Electronics LLC 功能描述:DUAL BUS TERMINATOR - Bulk |
| ADM1052JR-REEL | 制造商:Analog Devices 功能描述:DC DC Cntrlr Dual-OUT Prog Sw 3.3V Input 8-Pin SOIC T/R 制造商:Rochester Electronics LLC 功能描述:DUAL BUS TERMINATOR - Tape and Reel |
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