Overview
Features and Benefits
- Wide Input Voltage Range: 1.7V to 5.5V
- Wide Adjustable Output Voltage Range: 0.4V to 3.6V
- Built-In Charge Pump Generates High Side Bias
- Very Low Dropout: 45mV at 300mA
- ± 2% Voltage Accuracy Over Temperature, Supply, Load
- Fast Transient Recovery
- Low Operating Current: IIN = 100μA Typ
- Low Shutdown Current: IIN = 1μA Typ
- Stable with Ceramic Capacitor Down to 1μF
- Output Current Limit
- Thermal Overload Protected
- Reverse Output Current Protected
- Available in 8-Lead (3mm × 2mm) DFN Package
Product Details
The LTC3035 is a micropower, VLDO™ (very low dropout) linear regulator which operates from input voltages as low as 1.7V. The device is capable of supplying 300mA of output current with a typical dropout voltage of only 45mV. To allow operation at low input voltages the LTC3035 includes a charge pump generator that provides the necessary bias voltage for the internal LDO circuitry. Output current comes directly from the input supply for high efficiency regulation. The charge pump bias generator requires only a 0.1μF flying capacitor and a 1μF bypass capacitor for operation. The low 0.4V internal reference voltage allows the LTC3035 to be programmed to much lower output voltages than commonly available in LDOs. The output voltage is programmed via two tiny SMD resistors. The LTC3035’s low quiescent current makes it an ideal choice for use in battery-powered systems.
Other features include high output voltage accuracy, excellent transient response, stability with ultralow ESR ceramic capacitors as small as 1μF, short-circuit and thermal overload protection, output current limiting and reverse output current protection. The LTC3035 is available in a tiny, low profile (3mm × 2mm × 0.75mm) 8-lead DFN package.
Applications
- Li-Ion to 3.3V Low Dropout Supplies
- 2 × AA to 1.8V Low Dropout Supplies
- Low Power Handheld Devices
- Low Voltage Logic Supplies
- DSP Power Supplies
- Cellular Phones
- Portable Electronic Equipment
- Handheld Medical Instruments
- Post Regulator for Switching Supply Noise Rejection
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.
Evaluation Kits (1)
Documentation & Resources
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R415 Reliability Data3/23/2018
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DC886A - Demo Manual9/24/2009
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Taking Full Advantage of Very Low Dropout Linear Regulators12/1/2005 LT Journal
Tools & Simulations
LTspice
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.
To launch ready-to-run LTspice demonstration circuits for this part:
Step 1: Download and install LTspice on your computer.
Step 2: Click on the link in the section below to download a demonstration circuit.
Step 3: If LTspice does not automatically open after clicking the link below, you can instead run the simulation by right clicking on the link and selecting “Save Target As.” After saving the file to your computer, start LTspice and open the demonstration circuit by selecting ‘Open’ from the ‘File’ menu.
LTspice Simulations
Models for the following parts are available in LTspice:
LTC3035
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 |
|---|---|---|---|---|
| LTC3035EDDB#TRMPBF | Material Declaration | Reliability Data | 8-Lead DFN (3mm x 2mm w/ EP) | |
| LTC3035EDDB#TRPBF | Material Declaration | Reliability Data | 8-Lead DFN (3mm x 2mm w/ EP) | |
| Wafer Fabrication Data | R415 Reliability Data |
Support & Discussions
LTC3035 Discussions
Sample & Buy
Ordering FAQs
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Buy Now Pricing
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List Pricing
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Lead Times
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Sampling
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Evaluation Boards
Pricing displayed is based on 1-piece.
Up to two boards can be purchased through Analog.com. To order more than two, please purchase through one of our listed distributors.
Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.