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LTC1044A: 12V CMOS Voltage Converter Data Sheet4/8/2014PDF215K
Overview
Features and Benefits
- 1.5V to 12V Operating Supply Voltage Range
- 13V Absolute Maximum Rating
- 200μA Maximum No Load Supply Current at 5V
- Boost Pin (Pin 1) for Higher Switching Frequency
- 97% Minimum Open Circuit Voltage Conversion Efficiency
- 95% Minimum Power Conversion Efficiency
- IS = 1.5μA with 5V Supply When OSC Pin = 0V or V+
- High Voltage Upgrade to ICL7660/LTC1044
Product Details
The LTC1044A is a monolithic CMOS switched-capacitor voltage converter. It plugs in for ICL7660/LTC1044 in applications where higher input voltage (up to 12V) is needed. The LTC1044A provides several conversion functions without using inductors. The input voltage can be inverted (VOUT = –VIN), doubled (VOUT = 2VIN), divided (VOUT = VIN/2) or multiplied (VOUT = ±nVIN).
To optimize performance in specific applications, a boost function is available to raise the internal oscillator frequency by a factor of seven. Smaller external capacitors can be used in higher frequency operation to save board space. The internal oscillator can also be disabled to save power. The supply current drops to 1.5μA at 5V input when the OSC pin is tied to GND or V+.
Applications
- Conversion of 10V to ±10V Supplies
- Conversion of 5V to ±5V Supplies
- Precise Voltage Division: VOUT = VIN/2 ±20ppm
- Voltage Multiplication: VOUT = ±nVIN
- Supply Splitter: VOUT = ±VS/2
- Automotive Applications
- Battery Systems with 9V Wall Adapters/Chargers
Product Categories
Product Lifecycle
Production
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.
Documentation & Resources
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R020 Reliability Data3/26/2018PDF21 K
Tools & Simulations
LTspice
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Models for the following parts are available in LTspice:
LTC1044
LTC1044A
Design Resources
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal.View our quality and reliability program and certifications for more information.
| Part Number | Material Declaration | Reliability Data | Pin/Package Drawing | CAD Symbols, Footprints & 3D Models |
|---|---|---|---|---|
| LTC1044ACN8#PBF | Material Declaration | Reliability Data | 8-Lead PDIP (Narrow 0.3 Inch) | |
| LTC1044ACS8#PBF | Material Declaration | Reliability Data | 8-Lead SOIC (Narrow 0.15 Inch) | |
| LTC1044ACS8#TRPBF | Material Declaration | Reliability Data | 8-Lead SOIC (Narrow 0.15 Inch) | |
| LTC1044AIN8#PBF | Material Declaration | Reliability Data | 8-Lead PDIP (Narrow 0.3 Inch) | |
| LTC1044AIS8#PBF | Material Declaration | Reliability Data | 8-Lead SOIC (Narrow 0.15 Inch) | |
| LTC1044AIS8#TRPBF | Material Declaration | Reliability Data | 8-Lead SOIC (Narrow 0.15 Inch) | |
| Wafer Fabrication Data | R020 Reliability Data |
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