LT3090
LT3090
RECOMMENDED FOR NEW DESIGNS–36V, 600mA Negative Linear Regulator with Programmable Current Limit
- Part Models
- 16
- 1ku List Price
- Starting From $3.29
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Overview
- Output Current: 600mA
- Single Resistor Sets Output Voltage
- 50μA SET Pin Current: ±1% Initial Accuracy
- Programmable Current Limit
- Positive or Negative Output Current Monitor
- Parallelable for Higher Current and Heat Spreading
- Low Dropout Voltage: 300mV
- Low Output Noise: 18μVRMS (10Hz to 100kHz)
- Configurable as 3-Terminal Floating Regulator
- Wide Input Voltage Range: –1.5V to –36V
- Rail-to-Rail Output Voltage Range: 0V to –32V
- Positive/Negative Shutdown Logic or UVLO
- Programmable Cable Drop Compensation
- Load Regulation: 1.2mV (1mA to 600mA)
- Stable with 4.7μF Minimum Output Capacitor
- Stable with Ceramic or Tantalum Capacitors
- Thermally Enhanced 12-Lead MSOP and 10-Lead 0.75mm × 3mm × 3mm DFN Packages
The LT3090 is a 600mA, low dropout negative linear regulator that is easily parallelable to increase output current or spread heat on surface mounted boards. Designed with a precision current reference followed by a high performance rail-to-rail voltage buffer, this regulator finds use in applications requiring precision output, high current with no heat sink, output adjustability to zero and low dropout voltage. The device can also be configured as a 3-terminal floating regulator.
The LT3090 features fast transient response, high PSRR and output noise as low as 18μVRMS. The LT3090 generates a wide output voltage range (0V to –32V) while maintaining unity gain operation. This yields virtually constant bandwidth, load regulation, PSRR and noise, regardless of the programmed output voltage.
The LT3090 supplies 600mA at a typical dropout voltage of 300mV. Operating quiescent current is nominally 1mA and drops to << 1μA in shutdown. A single resistor adjusts the LT3090’s precision programmable current limit. The LT3090’s positive or negative current monitor either sources a current (0.5mA/A) or sinks a current (1mA/A) proportional to output current. Built-in protection includes reverse output protection, internal current limit with foldback and thermal shutdown with hysteresis.
Applications
- Post Regulator for Switching Supplies
- Low Noise Instrumentation and RF Supplies
- Rugged Industrial Supplies
- Precision Power Supplies
Documentation
Data Sheet 1
User Guide 1
Technical Articles 4
Video 3
Brochure 1
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 |
|---|---|---|---|
| LT3090EDD#PBF | 10-Lead DFN (3mm x 3mm w/ EP) | ||
| LT3090EDD#TRPBF | 10-Lead DFN (3mm x 3mm w/ EP) | ||
| LT3090EMSE#PBF | 12-Lead MSOP w/ EP | ||
| LT3090EMSE#TRPBF | 12-Lead MSOP w/ EP | ||
| LT3090HDD#PBF | 10-Lead DFN (3mm x 3mm w/ EP) | ||
| LT3090HDD#TRPBF | 10-Lead DFN (3mm x 3mm w/ EP) | ||
| LT3090HMSE#PBF | 12-Lead MSOP w/ EP | ||
| LT3090HMSE#TRPBF | 12-Lead MSOP w/ EP | ||
| LT3090IDD#PBF | 10-Lead DFN (3mm x 3mm w/ EP) | ||
| LT3090IDD#TRPBF | 10-Lead DFN (3mm x 3mm w/ EP) | ||
| LT3090IMSE#PBF | 12-Lead MSOP w/ EP | ||
| LT3090IMSE#TRPBF | 12-Lead MSOP w/ EP | ||
| LT3090MPDD#PBF | 10-Lead DFN (3mm x 3mm w/ EP) | ||
| LT3090MPDD#TRPBF | 10-Lead DFN (3mm x 3mm w/ EP) | ||
| LT3090MPMSE#PBF | 12-Lead MSOP w/ EP | ||
| LT3090MPMSE#TRPBF | 12-Lead MSOP w/ EP |
| Part Models | Product Lifecycle | PCN |
|---|---|---|
|
Feb 4, 2020 - 20_0129 Laser Mark Conversion for 12-Lead MSOP Packages Assembled in ADPG and UTAC |
||
| LT3090EMSE#PBF | PRODUCTION | |
| LT3090EMSE#TRPBF | PRODUCTION | |
| LT3090HMSE#PBF | PRODUCTION | |
| LT3090HMSE#TRPBF | PRODUCTION | |
| LT3090IMSE#PBF | PRODUCTION | |
| LT3090IMSE#TRPBF | PRODUCTION | |
| LT3090MPMSE#PBF | PRODUCTION | |
| LT3090MPMSE#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 |
|---|---|---|
| LDO Linear Regulators 1 | ||
| LT3015 Series | 1.5A, Low Noise, Negative Linear Regulator with Precision Current Limit | |
| Parts | Product Life Cycle | Description |
|---|---|---|
| LT3091 | RECOMMENDED FOR NEW DESIGNS | –36V, 1.5A Negative Linear Regulator with Programmable Current Limit |
Tools & Simulations
LTspice 1
Models for the following parts are available in LTspice:
- LT3090
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
LT3090 Demo Board | Negative Linear Regulator with Prog Current Limit, -1.5V ≤ VIN ≤ -36V, VOUT = -1.25V/-2.5V/-5V/-12V/-15V/-18V @ 600mA
Resources
LT3090 Demo Board | Negative Linear Regulator with Prog Current Limit, -1.5V ≤ VIN ≤ -36V, VOUT = -1.25V/-2.5V/-5V/-12V/-15V/-18V @ 600mA
Resources
Reference Designs
±10 V Analog Input and ±15 V Analog Output for Raspberry Pi Platforms
Part Used
Resources
Design & Integration Tools
Videos
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CN0554: 10V Analog Input and 15V Analog Output for Raspberry Pi
DC to 5.5 GHz Signal Generator with +/-0.5 dB Calibrated Output Power