LT3021
LT3021
LT3021-1.2
LT3021-1.5
LT3021-1.8
RECOMMENDED FOR NEW DESIGNS
500mA, Low Voltage, Very Low Dropout Linear Regulator
- Part Models
- 18
- 1ku List Price
- Starting From $3.45
Viewing:
Overview
- VIN Range: 0.9V to 10V
- Dropout Voltage: 160mV Typical
- Output Current: 500mA
- Adjustable Output (VREF = VOUT(MIN) = 200mV)
- Fixed Output Voltages: 1.2V, 1.5V, 1.8V
- Stable with Low ESR, Ceramic Output Capacitors (3.3µF Minimum)
- 0.2% Load Regulation from 0mA to 500mA
- Quiescent Current: 120µA (Typ)
- 3µA Typical Quiescent Current in Shutdown
- Current Limit Protection
- Reverse-Battery Protection
- No Reverse Current
- Thermal Limiting with Hysteresis
- 16-Pin DFN (5mm × 5mm) and 8-Lead SO Packages
The LT3021 is a very low dropout voltage (VLDO™) linear regulator that operates from input supplies down to 0.9V. This device supplies 500mA of output current with a typical dropout voltage of 160mV. The LT3021 is ideal for low input voltage to low output voltage applications, providing comparable electrical efficiency to that of a switching regulator.
The LT3021 regulator optimizes stability and transient response with low ESR, ceramic output capacitors as small as 3.3µF. Other LT3021 features include 0.05% typical line regulation and 0.2% typical load regulation. In shutdown, quiescent current typically drops to 3µA.
Internal protection circuitry includes reverse-battery protection, current limiting, thermal limiting with hysteresis, and reverse-current protection. The LT3021 is available as an adjustable output device with an output range down to the 200mV reference. Three fixed output voltages, 1.2V, 1.5V and 1.8V, are also available.
The LT3021 regulator is available in the low profile (0.75mm) 16-pin (5mm × 5mm) DFN package with exposed pad and the 8-lead SO package.
Applications
- Low Current Regulators
- Battery-Powered Systems
- Cellular Phones
- Pagers
- Wireless Modems
Documentation
Data Sheet 1
User Guide 1
Brochure 3
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 |
|---|---|---|---|
| LT3021EDH#PBF | 16-Lead DFN (5mm x 5mm w/ EP) | ||
| LT3021EDH#TRPBF | 16-Lead DFN (5mm x 5mm w/ EP) | ||
| LT3021EDH-1.2#PBF | 16-Lead DFN (5mm x 5mm w/ EP) | ||
| LT3021EDH-1.2#TRPBF | 16-Lead DFN (5mm x 5mm w/ EP) | ||
| LT3021EDH-1.5#PBF | 16-Lead DFN (5mm x 5mm w/ EP) | ||
| LT3021EDH-1.5#TRPBF | 16-Lead DFN (5mm x 5mm w/ EP) | ||
| LT3021EDH-1.8#PBF | 16-Lead DFN (5mm x 5mm w/ EP) | ||
| LT3021EDH-1.8#TRPBF | 16-Lead DFN (5mm x 5mm w/ EP) | ||
| LT3021ES8#PBF | 8-Lead SOIC (Narrow 0.15 Inch) | ||
| LT3021ES8#TRPBF | 8-Lead SOIC (Narrow 0.15 Inch) | ||
| LT3021ES8-1.2#PBF | 8-Lead SOIC (Narrow 0.15 Inch) | ||
| LT3021ES8-1.2#TRPBF | 8-Lead SOIC (Narrow 0.15 Inch) | ||
| LT3021ES8-1.5#PBF | 8-Lead SOIC (Narrow 0.15 Inch) | ||
| LT3021ES8-1.5#TRPBF | 8-Lead SOIC (Narrow 0.15 Inch) | ||
| LT3021ES8-1.8#PBF | 8-Lead SOIC (Narrow 0.15 Inch) | ||
| LT3021ES8-1.8#TRPBF | 8-Lead SOIC (Narrow 0.15 Inch) | ||
| LT3021IS8-1.8#PBF | 8-Lead SOIC (Narrow 0.15 Inch) | ||
| LT3021IS8-1.8#TRPBF | 8-Lead SOIC (Narrow 0.15 Inch) |
| Part Models | Product Lifecycle | PCN |
|---|---|---|
|
Oct 24, 2024 - 24_0246 Migrating Bottom Trace Code Marking to Top Side Laser Marking for SOIC_N Package |
||
| LT3021ES8#PBF | PRODUCTION | |
| LT3021ES8#TRPBF | PRODUCTION | |
| LT3021ES8-1.2#PBF | PRODUCTION | |
| LT3021ES8-1.2#TRPBF | PRODUCTION | |
| LT3021ES8-1.5#PBF | PRODUCTION | |
| LT3021ES8-1.5#TRPBF | PRODUCTION | |
| LT3021ES8-1.8#PBF | PRODUCTION | |
| LT3021ES8-1.8#TRPBF | PRODUCTION | |
| LT3021IS8-1.8#PBF | PRODUCTION | |
| LT3021IS8-1.8#TRPBF | PRODUCTION | |
|
Oct 12, 2022 - 22_0255 Epoxy Change from Henkel 8290 to 8290A for 8-Lead SOIC Package (PCN part 2 of 2) |
||
| LT3021ES8#PBF | PRODUCTION | |
| LT3021ES8#TRPBF | PRODUCTION | |
| LT3021ES8-1.2#PBF | PRODUCTION | |
| LT3021ES8-1.2#TRPBF | PRODUCTION | |
| LT3021ES8-1.5#PBF | PRODUCTION | |
| LT3021ES8-1.5#TRPBF | PRODUCTION | |
| LT3021ES8-1.8#PBF | PRODUCTION | |
| LT3021ES8-1.8#TRPBF | PRODUCTION | |
| LT3021IS8-1.8#PBF | PRODUCTION | |
| LT3021IS8-1.8#TRPBF | PRODUCTION | |
|
Jun 16, 2021 - 21_0026 Laser Top Mark for 8SOICN Assembled in ADPG, UTL and CRM |
||
| LT3021ES8#PBF | PRODUCTION | |
| LT3021ES8#TRPBF | PRODUCTION | |
| LT3021ES8-1.2#PBF | PRODUCTION | |
| LT3021ES8-1.2#TRPBF | PRODUCTION | |
| LT3021ES8-1.5#PBF | PRODUCTION | |
| LT3021ES8-1.5#TRPBF | PRODUCTION | |
| LT3021ES8-1.8#PBF | PRODUCTION | |
| LT3021ES8-1.8#TRPBF | PRODUCTION | |
| LT3021IS8-1.8#PBF | PRODUCTION | |
| LT3021IS8-1.8#TRPBF | PRODUCTION | |
This is the most up-to-date revision of the Data Sheet.
Software Resources
Can't find the software or driver you need?
Request a Driver/SoftwareHardware Ecosystem
| Parts | Product Life Cycle | Description |
|---|---|---|
|
LT3021 LT3021-1.2 LT3021-1.5 LT3021-1.8 |
500mA, Low Voltage, Very Low Dropout Linear Regulator |
Tools & Simulations
LTspice 2
- LTC6101/LT3021 Demo Circuit - Voltage Controlled Current Source (100mA/V)
- LT3021-1.5 Demo Circuit - Low Voltage µP/µC VLDO Regulator (1.7-10V to 1.5V @ 500mA)
Models for the following parts are available in LTspice:
- LT3021
- LT3021-1.2
- LT3021-1.5
- LT3021-1.8
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
LT3021EDH Demo Board | LDO Linear Regulator, 1V ≤ VIN ≤ 10V, VOUT = 0.8V/1.2V/1.5V/1.8V @ 500mA
Resources
Reference Designs
Part Used
