Purchase LX1681, In-stock LX1681 From SeekIC.
Part Number: LX1681
Description: The LX1681/1682 are monolithic, pulsewidth modulator controller ICs. They are designed to implement a ...
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LX1681
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Suppliers
DataSheet
General Description
LX1681 General Description
The LX1681/1682 are monolithic, pulsewidth modulator controller ICs. They are designed to implement a flexible, low cost buck (step-down) regulator supply with minimal external components.
The LX1681 is a non-synchronous controller; the LX1682 has a synchronous driver for higher efficiency. The output voltage is adjustable by means of a resistor divider to set the voltage between 1.25V and 4.5V.
LX1681 Maximum Ratings
Supply Voltage (VC1) ............................................................................................ 18V
Supply Voltage (VCC) .............................................................................................. 7V
Output Drive Peak Current Source (500ns).......................................................... 1.0A
Output Drive Peak Current Sink (500ns) .............................................................. 1.0A
Input Voltage (SS/ENABLE Pin) .................................................................. -0.3V to 6V
Operating Junction Temperature ...................................................................... 150°C
Storage Temperature Range ........................................................... -65°C to +150°C
Lead Temperature (Soldering, 10 Seconds) ...................................................... 300°C
LX1681 Features
Fixed 200kHz Switching Frequency
Constant Frequency Voltage-Mode Control Requires NO External Compensation
Hiccup-Mode Over-Current Protection
High Efficiency
Output Voltage Set By Resistor Divider
Under-Voltage Lockout
Soft-Start And Enable
Synchronous Rectification (LX1682)
Non-Synchronous Rectification (LX1681)
Small, 8-pin Surface Mount Package
Constant Frequency Voltage-Mode Control Requires NO External Compensation
Hiccup-Mode Over-Current Protection
High Efficiency
Output Voltage Set By Resistor Divider
Under-Voltage Lockout
Soft-Start And Enable
Synchronous Rectification (LX1682)
Non-Synchronous Rectification (LX1681)
Small, 8-pin Surface Mount Package
LX1681 Typical Application
5V to 3.3V Or Less Buck Regulators
FPGA Supplies
Microprocessor Chipset Supplies(e.g. Camino, Whitney, etc.)
Rambus® RIMMTM Supplies
Hard Disk Drives
Computer Add-on Cards
FPGA Supplies
Microprocessor Chipset Supplies(e.g. Camino, Whitney, etc.)
Rambus® RIMMTM Supplies
Hard Disk Drives
Computer Add-on Cards
LX1681 Connection Diagram
LX1681
PDF/DataSheet Download
- Datasheet: LX1681
- File Size: 128694 KB
- Manufacturer: MICROSEMI [Microsemi Corporation]
- Click here to Download
- ·LX1004
- MICROSEMI [Microsemi Corporation]
- 1.2V & 2.5V MICROPOWER VOLTAGE REFERENCES
- 155181 KB
- ·LX1004CDM-12
- MICROSEMI [Microsemi Corporation]
- 1.2V & 2.5V MICROPOWER VOLTAGE REFERENCES
- 155181 KB
- ·LX1004CDM-25
- MICROSEMI [Microsemi Corporation]
- 1.2V & 2.5V MICROPOWER VOLTAGE REFERENCES
- 155181 KB
- ·LX1004CLP-12
- MICROSEMI [Microsemi Corporation]
- 1.2V & 2.5V MICROPOWER VOLTAGE REFERENCES
- 155181 KB
- ·LX1004CLP-25
- MICROSEMI [Microsemi Corporation]
- 1.2V & 2.5V MICROPOWER VOLTAGE REFERENCES
- 155181 KB
- ·LX100VB10RM10X20LL
- ETC [ETC]
- LXA/LX Series
- 860561 KB
- ·LX100VB1ROM8X14LL
- ETC [ETC]
- LXA/LX Series
- 860561 KB
- ·LX100VB22RM12X20LL
- ETC [ETC]
- LXA/LX Series
- 860561 KB
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