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Part Number: LX1684
Description: The LX1684 is a monolithic, voltage- mode pulse-width modulator controller. It...
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LX1684
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DataSheet
General Description
LX1684 General Description
The LX1684 is a monolithic, voltage- mode pulse-width modulator controller. It is designed to mplement a flexible, low cost buck (step-down) regulator supply with a minimal of external components.
The LX1684 has a synchronous driver for higher efficiency and is optimized to provide 12V to 3.3V or 12V to 2.5V regulation. It also can be used to convert 5V or 3.3V to voltages as low as 1.25V.
Switching frequency is fixed at 175kHz for optimal cost and space. Short-circuit current limiting can be implemented without expensive current sense resistors.
LX1684 Maximum Ratings
Supply Voltage (VC1) ......................................................................................18V
Supply Voltage (VCC) ........................................................................................7V
Input Voltage (CSP Pin)..................................................................................14V
Output Drive Peak Current Source (500ns)....................................................1.0A
Output Drive Peak Current Sink (500ns)........................................................1.0A
Input Voltage (SS/ENABLE Pin)...........................................................-0.3 to 6V
Operating Junction Temperature ..................................................................150°C
Storage Temperature ...................................................................-65°C to +150°C
Lead Temperature (Soldering 10 Seconds) ..................................................300°C
LX1684 Features
Fixed 175kHz 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
Small, 14-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
Small, 14-pin Surface Mount Package
LX1684 Typical Application
12V to 3.3V Or Less Buck Regulators
3.3/5V to 2.5V Or Less Buck Regulators
Hard Disk Drives
Computer Add-on Cards
3.3/5V to 2.5V Or Less Buck Regulators
Hard Disk Drives
Computer Add-on Cards
LX1684 Connection Diagram
LX1684
PDF/DataSheet Download
- Datasheet: LX1684
- File Size: 301470 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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The LX1681/LX1682 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 synchro...
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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 synchrono...
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