Datasheet for LTC1144:
- Manufacturer Part Number : LTC1144
- Manufacturer : AD
- Description : Switched-Capacitor Wide Input Range Voltage Converter with Shutdown
- Series : LTC1144
- Reference Price : USD 1.92
- Our Price : We have a better price, contact us by email
- Product Type : Inductorless (Charge Pump) DC/DC Converters
- Function : Unregulated Doubling/Inverting Charge Pumps
- Current Suggest : Production
- Status : Production
- RoHS Status: -
- Voltage: -
- Feature: -
- Package Case: -
- Temperature Range: -
- Packing: Reel/Tray/Tube
- Standard Packing Quantity: -
- Country of Origin: -
- Other Part Number : LTC1144
- Shipping methods : DHL FEDEX UPS TNT
- Delivery Time : Ship within 1 day.
- Manufacturer Production time : 6-8 weeks (Normally have stocks)
- Weight : 0.001KG
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The LTC1144 is a monolithic CMOS switched-capacitor voltage converter. It performs supply voltage conversion from positive to negative from an input range of 2V to 18V, resulting in complementary output voltages of –2V to –18V. Only two noncritical external capacitors are needed for the charge pump and charge reservoir functions.
The converter has an internal oscillator that can be overdriven by an external clock or slowed down when connected to a capacitor. The oscillator runs at a 10kHz frequency when unloaded. A higher frequency outside the audio band can also be obtained if the Boost Pin is tied to V+. The SHDN pin reduces supply current to 8μA and can be used to save power when the converter is not in use.
The LTC1144 contains an internal oscillator, divide-by-two, voltage level shifter, and four power MOSFETs. A special logic circuit will prevent the power N-channel switch substrate from turning on.
Applications
- Conversion of 15V to ±15V Supplies
- Inexpensive Negative Supplies
- Data Acquisition Systems
- High Voltage Upgrade to LTC1044 or 7660
- Voltage Division and Multiplications
- Automotive Applications
- Battery Systems with Wall Adapter/Charger
At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.
