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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
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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
Reliability Data (1)
User Guides (1)
Tools & Simulations
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LTspice Simulations
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Design Resources
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LTC3035 Discussions
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The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.
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Evaluation Boards
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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.