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參數資料
| 型號： | MAX1804 |
| 廠商： | Maxim Integrated Products, Inc. |
| 英文描述： | External Four-Input Feedback Integrator for Power Supplies |
| 中文描述： | 外部四反饋輸入積分器，用于電源控制 |
| 文件頁數： | 1/11頁 |
| 文件大小： | 570K |
| 代理商： | MAX1804 |
General Description
The MAX1804 feedback integrator is designed to
improve voltage regulation in power-supply systems.
The device corrects line- and load-regulation problems,
and can be used to compensate for voltage drops in
power-management distribution lines.
The regulation set point is determined by an external
reference voltage applied at the ADJ pin. The differ-
ence between that reference and MAX1804 feedback is
integrated, and a correction current is applied to the
voltage regulator’s feedback.
The MAX1804’s four inputs allow voltage monitoring in
several local and remote locations to correct for distribu-
tion losses caused by long traces, connectors, and
switches. This eliminates the wasteful practice of perma-
nently adjusting the regulator’s output voltage high
enough to correct for worst-case voltage drops. This is
especially helpful in systems where the load current
varies widely and portions of the load are often shut down
or disconnected (for example, in notebook computers).
If a load switch is opened and the output voltage
sensed at one input falls, the MAX1804 automatically
disables that input and adjusts the regulator’s output
voltage to the lowest of remaining active inputs. If all
inputs are disabled, the OUT pin is in a high-imped-
ance state and makes no output voltage correction.
When
SHDN
is low, the MAX1804 draws less than 1μA
and its inputs and output are high impedance. The
MAX1804 is available in a 10-pin μMAX package, about
half the size of an 8-pin SOIC.
Features
o
High Precision (±1% max Error)
o
Low Power (25μA Supply Current)
o
Automatic Input Disable
o
Shutdown (1μA max Supply Current)
o
Inputs and Outputs High Impedance in Shutdown
or When V+ = 0
o
+2.7V to +5.5V Supply Range
o
2.8V to 5.5V Regulation Adjust Range
o
Parallelable for More than Four Inputs
o
10-Pin μMAX Package
M
External Four-Input Feedback Integrator for
Power Supplies
________________________________________________________________
Maxim Integrated Products
For free samples and the latest literature, visit www.maxim-ic.com or phone 1-800-998-8800.
For small orders, phone 1-800-835-8769.
1
19-1737; Rev 0; 7/00
Ordering Information
PART
TEMP. RANGE
-40
°
C to +85
°
C
PIN-PACKAGE
10
μ
MAX
MAX1804EUB
Applications
Pin Configuration appears at end of data sheet.
Remote Feedback Regulators
High-Accuracy Regulators
Desktop/Notebook Computers
Servers and Workstations
Subnotebooks and PDAs
DH
SYSTEM
SUPPLY
FB
REF
COMP
ADJ
V+
SHDN
IN1
IN2
IN3
IN4
OUT
GND
V
OUT
A
V
IN
V
OUT
B
V
OUT
C
V
OUT
D
RTOP
R
BOTTOM
R
OUT
DL
MAX1804
Typical Operating Circuit
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相關代理商/技術參數 |
參數描述 |
|---|---|
| MAX1804EUB | 功能描述:電流和電力監控器、調節器 RoHS:否 制造商:STMicroelectronics 產品:Current Regulators 電源電壓-最大:48 V 電源電壓-最小:5.5 V 工作溫度范圍:- 40 C to + 150 C 安裝風格:SMD/SMT 封裝 / 箱體:HPSO-8 封裝:Reel |
| MAX1804EUB+ | 功能描述:電流和電力監控器、調節器 Feedback Integrator for Power Supply RoHS:否 制造商:STMicroelectronics 產品:Current Regulators 電源電壓-最大:48 V 電源電壓-最小:5.5 V 工作溫度范圍:- 40 C to + 150 C 安裝風格:SMD/SMT 封裝 / 箱體:HPSO-8 封裝:Reel |
| MAX1804EUB+T | 功能描述:電流和電力監控器、調節器 Feedback Integrator for Power Supply RoHS:否 制造商:STMicroelectronics 產品:Current Regulators 電源電壓-最大:48 V 電源電壓-最小:5.5 V 工作溫度范圍:- 40 C to + 150 C 安裝風格:SMD/SMT 封裝 / 箱體:HPSO-8 封裝:Reel |
| MAX1804EUB-T | 功能描述:電流和電力監控器、調節器 RoHS:否 制造商:STMicroelectronics 產品:Current Regulators 電源電壓-最大:48 V 電源電壓-最小:5.5 V 工作溫度范圍:- 40 C to + 150 C 安裝風格:SMD/SMT 封裝 / 箱體:HPSO-8 封裝:Reel |
| MAX1805EEE | 制造商:Maxim Integrated Products 功能描述: |
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