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ICL7673
Power Supply Support Circuit, Fixed, 1 Channel, CMOS, PDSO8
ICL7673
Power Supply Support Circuit, Fixed, 1 Channel, CMOS, PDSO8
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ICL7673 數據表
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詳細說明
The Intersil ICL7673 is a monolithic CMOS battery backup circuit that offers unique performance advantages over conventional means of switching to a backup supply. The ICL7673 is intended as a low-cost solution for the switching of systems between two power supplies; main and battery backup. The main application is keep-alive-battery power switching for use in volatile CMOS RAM memory systems and real time clocks. In many applications this circuit will represent a low insertion voltage loss between the supplies and load. This circuit features low current consumption, wide operating voltage range, and exceptionally low leakage between inputs. Logic outputs are provided that can be used to indicate which supply is connected and can also be used to increase the power switching capability of the circuit by driving external PNP transistors.Features• Automatically Connects Output to the Greater of Either Input Supply Voltage• If Main Power to External Equipment is Lost, Circuit Will Automatically Connect Battery Backup• Reconnects Main Power When Restored• Logic Indicator Signaling Status of Main Power• Low Impedance Connection Switches• Low Internal Power Consumption• Wide Supply Range: . . . . . . . . . . . . . . . . . . . 2.5V to 15V• Low Leakage Between Inputs• External Transistors May Be Added if Very Large Currents Need to Be Switched• Pb-Free Plus Anneal Available (RoHS Compliant)Applications• On Board Battery Backup for Real-Time Clocks, Timers, or Volatile RAMs• Over/Under Voltage Detector• Peak Voltage Detector• Other Uses: - Portable Instruments, Portable Telephones, Line Operated Equipment
主要特徵
- Automatically Connects Output to the Greater of Either Input Supply Voltage
- If Main Power to External Equipment is Lost, Circuit Will Automatically Connect Battery Backup
- Reconnects Main Power When Restored
- Logic Indicator Signaling Status of Main Power
- Low Impedance Connection Switches
- Low Internal Power Consumption
- Wide Supply Range: . . . . . . . . . . . . . . . . . . . 2.5V to 15V
- Low Leakage Between Inputs
- External Transistors May Be Added if Very Large Currents Need to Be Switched
規格
以下是所選零件的基本參數，涉及零件的特性及其所屬類別。
| Manufacturer | Renesas | Product Category ! | Ideal Diode & ORing Controllers |
數據表 PDF
數據表記錄了器件的特性、絕對最大額定值、應用等，這對於作為器件特定應用的整體指南大有裨益。
常見問題解答
What is ICL7673?
The ICL7673 is a precision voltage regulator designed by Maxim Integrated. It is ideal for applications requiring accurate and stable voltage regulation, such as power management systems, instrumentation, and automotive electronics.
How Does ICL7673 Work?
The ICL7673 operates as a voltage regulator that maintains a constant output voltage regardless of changes in input voltage or load conditions. It utilizes feedback control to adjust its internal circuitry and ensure a stable output voltage. The regulator provides protections such as overcurrent and thermal shutdown to safeguard connected devices.
How Many Pins does ICL7673 have and What are the Functions of the Pinout Configuration?
The ICL7673 is available in various package options with different pin configurations. In the 8-pin SOIC package, the pinout configuration typically includes:
- VIN: Input voltage pin.
- GND: Ground pin.
- VOUT: Output voltage pin.
- EN (or EN/DIS): Enable (or Enable/Disable) pin for controlling the regulator.
- ADJ (or TRIM): Adjustment (or Trim) pin for fine-tuning the output voltage.
- NC: No connection pin.
What are the Pros and Cons of ICL7673?
Pros:
- Precision Regulation: Provides accurate and stable voltage regulation for critical applications.
- Protection Features: Offers overcurrent and thermal shutdown protections for enhanced reliability.
- Wide Input Voltage Range: Compatible with a wide range of input voltages for versatility.
- Low Dropout Voltage: Maintains regulation even with small voltage differentials.
- Compact Package: Available in compact packages for space-constrained designs.
Cons:
- Additional Components: May require external components for specific applications or features.
- Cost: Precision voltage regulators like the ICL7673 may have a higher cost compared to basic regulators.
- Heat Dissipation: Heat sinking may be necessary for continuous high-power applications.
Are There Any Equivalents/Alternatives to ICL7673 for Recommendation?
- The LT1761 from Analog Devices is a similar precision voltage regulator with low dropout voltage.
- Alternatives to the ICL7673 include the LM317 from Texas Instruments and the REG1117 from TI (Texas Instruments).
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