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
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.
- 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 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)
Demonstration circuit 886 is an ultralow input voltage and dropout voltage supply using the 300mA output current LTC3035 linear regulator, which comes in a very small 8-pin 3mm × 2mm DFN package. The DC886 has an input voltage range from 1.7V to 5.5V and jumper selectable output voltages of 2.5V/3.3V/5V or a user-determined value. Due to the 0.4V reference of the LTC3035, the DC886 is capable of supplying power to very low voltage applications, such as a (relatively) high current voltage references. The DC886 comes assembled with small 1uF ceramic capacitors to demonstrate the LTC3035's ability to maintain stability with ceramic output capacitors.
Documentation & Resources
R415 Reliability Data3/23/2018
DC886A - Demo Manual9/24/2009
Taking Full Advantage of Very Low Dropout Linear Regulators12/1/2005 LT Journal
Tools & Simulations
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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|
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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.