LT3033
3A, 0.95V to 10V, Very Low Dropout Linear Regulator with Programmable Current Limit
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Overview
Features and Benefits
- Single Supply VIN Range: 0.95V to 10V
- Dropout Voltage: 95mV Typical
- Output Current: 3A
- Adjustable Output Voltage: 200mV to 9.7V
- Single Capacitor Soft-Starts Reference and Lowers Output Noise
- Stable with Low ESR, Ceramic Output Capacitors
- 0.075% Typical Load Regulation from 1mA to 3A
- Quiescent Current: 1.9mA Typical
- Quiescent Current in Shutdown: 22μA Typical
- Power Good (PWRGD) Flag (Status Valid in Shutdown)
- Current Limit Protection with Foldback
- Programmable Current Limit
- Output Current Monitor: IOUT/2650
- Thermal Limiting with Hysteresis
- Reverse Battery, Reverse Output, and Reverse Current Protection
- 20-Lead 3mm × 4mm QFN Package
Product Details
The LT3033 is a very low dropout voltage (VLDO™) linear regulator that operates from a single input supply down to 0.95V. The device supplies 3A output current with 95mV typical dropout voltage. The LT3033 is ideal for low input voltage to low output voltage applications, providing comparable electrical efficiency to a switching regulator.
The LT3033 optimizes stability and transient response with low ESR ceramic output capacitors as small as 10μF. Other features include programmable current limit, an output current monitor and a power good flag to indicate output voltage regulation. In shutdown, quiescent current typically drops to 22μA. Internal protection circuitry includes reverse-battery protection, current limiting with foldback, thermal limiting with hysteresis and reverse-current protection.
The LT3033 is available as an adjustable device with an output voltage down to the 200mV reference. The device is available in a thermally enhanced, low profile 3mm × 4mm × 0.75mm QFN package.
APPLICATIONS
- High Efficiency Linear Regulators
- Battery-Powered Systems
- Logic Supplies
- Post Regulator for Switching Supplies
- Wireless Modems
- FPGA Core Supplies
Product Categories
Product Lifecycle
Recommended for New Designs
This product has been released to the market. The data sheet contains all final specifications and operating conditions. For new designs, ADI recommends utilization of these products.
Evaluation Kits (1)
Documentation & Resources
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Linear Low Dropout (LDO) Regulator Solutions4/17/2018PDF3 M
Tools & Simulations
LTspice
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LTspice Simulations
Models for the following parts are available in LTspice:
LT3033
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 |
|---|---|---|---|---|
| LT3033EUDC#PBF | Material Declaration | Reliability Data | 20-Lead QFN (3mm x 4mm) | |
| LT3033EUDC#TRPBF | Material Declaration | Reliability Data | 20-Lead QFN (3mm x 4mm) | |
| LT3033IUDC#PBF | Material Declaration | Reliability Data | 20-Lead QFN (3mm x 4mm) | |
| LT3033IUDC#TRPBF | Material Declaration | Reliability Data | 20-Lead QFN (3mm x 4mm) | |
| Wafer Fabrication Data |
Sample & Buy
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Evaluation Boards
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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.