LTC1928-5
LTC1928-5
PRODUCTIONDoubler Charge Pump with Low Noise Linear Regulator in SOT-23
- Part Models
- 2
- 1ku List Price
- Starting From $2.78
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Overview
- Low Output Noise: 90µVRMS (100kHz BW)
- Low Profile (1mm) ThinSOT™ Package
- Fixed Output Voltage: 5V
- Input Voltage Range: 2.7V to 4.4V
- Uses Small Ceramic Capacitors
- No Inductors Required
- Output Current Up to 30mA
- 550kHz Switching Frequency
- Low Operating Current: 190µA
- Low Shutdown Current: 4µA
- Internal Thermal Shutdown and Current Limiting
The LTC1928-5 is a doubler charge pump with an internal low noise, low dropout (LDO) linear regulator. The part is designed to provide a low noise boosted supply voltage for powering noise sensitive devices such as high frequency VCOs in wireless applications
An internal charge pump converts a 2.7V to 4.4V input to a boosted output, while the internal LDO regulator converts the boosted voltage to a low noise regulated output. The regulator is capable of supplying up to 30mA of output current. Shutdown reduces the supply current to <8µA, removes the load from VIN by disabling the regulator and discharges VOUT to ground through a 200Ω switch.
The LTC1928-5 LDO regulator is stable with only 2µF on the output. Small ceramic capacitors can be used, reducing PC board area.
The LTC1928-5 is short-circuit and overtemperature protected. The part is available in a 6-pin low profile (1mm) ThinSOT package.
Applications
- VCO Power Supplies for Cellular Phones
- 2-Way Pagers
- Wireless PCMCIA Cards
- Portable Medical Instruments
- Low Power Data Acquisition
- Remote Transmitters
- White LED Driver
- GaAs Switches
Documentation
Data Sheet 1
User Guide 1
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 Model | Pin/Package Drawing | Documentation | CAD Symbols, Footprints, and 3D Models |
|---|---|---|---|
| LTC1928ES6-5#TRMPBF | 6-Lead TSOT-23 | ||
| LTC1928ES6-5#TRPBF | 6-Lead TSOT-23 |
This is the most up-to-date revision of the Data Sheet.
Software Resources
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LTspice 1
Models for the following parts are available in LTspice:
- LTC1928-5
LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.
Evaluation Kits
LTC1928ES6-5 | Low Noise Boost DC/DC Converter, 2.7V to 4.4V Input, 5VOUT @ 30mA
Resources
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