LT3093

RECOMMENDED FOR NEW DESIGNS

–20V, 200mA, Ultralow Noise, Ultrahigh PSRR Negative Linear Regulator

Data Sheet (Rev. 0) Product Selection Table

Part Models: 12
1ku List Price: Starting From $2.65

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Part Details

Ultralow RMS Noise: 0.8µV_RMS (10Hz to 100kHz)
Ultralow Spot Noise: 2.2nV/√Hz at 10kHz
Ultrahigh PSRR: 73dB at 1MHz
Output Current: 200mA
Wide Input Voltage Range: –1.8V to –20V
Single Capacitor Improves Noise and PSRR
100µA SET Pin Current: ±1% Initial Accuracy
Single Resistor Programs Output Voltage
Programmable Current Limit

Low Dropout Voltage: 190mV
Output Voltage Range: 0V to –19.5V
Programmable Power Good and Fast Start-Up
Bipolar Precision Enable/UVLO Pin
VIOC Pin Controls Upstream Regulator to Minimize Power Dissipation and Optimize PSRR
Minimum Output Capacitor: 4.7µF Ceramic
12-Lead MSOP and 3mm × 3mm DFN Packages

Part Models: 12
1ku List Price: Starting From $2.65

Documentation

Data Sheet 1

LT3093: –20V, 200mA, Ultralow Noise, Ultrahigh PSRR Negative Linear Regulator (Rev.0) 05/07/2019

Reliability Data 1

R531 Reliability Data 03/26/2018

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
LT3093EDD#PBF	12-Lead DFN (3mm x 3mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT3093EDD#TRPBF	12-Lead DFN (3mm x 3mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT3093EMSE#PBF	12-Lead MSOP w/ EP	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT3093EMSE#TRPBF	12-Lead MSOP w/ EP	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT3093HDD#PBF	12-Lead DFN (3mm x 3mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT3093HDD#TRPBF	12-Lead DFN (3mm x 3mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT3093HMSE#PBF	12-Lead MSOP w/ EP	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT3093HMSE#TRPBF	12-Lead MSOP w/ EP	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT3093IDD#PBF	12-Lead DFN (3mm x 3mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT3093IDD#TRPBF	12-Lead DFN (3mm x 3mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT3093IMSE#PBF	12-Lead MSOP w/ EP	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT3093IMSE#TRPBF	12-Lead MSOP w/ EP	Material Declaration Reliablity Data	Ultra Librarian SamacSys

Part Models	Product Lifecycle	PCN

Feb 4, 2020 - 20_0129 Laser Mark Conversion for 12-Lead MSOP Packages Assembled in ADPG and UTAC
		PCN20_0129_Form Material_Report
LT3093EMSE#PBF	PRODUCTION
LT3093EMSE#TRPBF	PRODUCTION
LT3093HMSE#PBF	PRODUCTION
LT3093HMSE#TRPBF	PRODUCTION
LT3093IMSE#PBF	PRODUCTION
LT3093IMSE#TRPBF	PRODUCTION

This is the most up-to-date revision of the Data Sheet.

Tools & Simulations

LTspice 2

Models for the following parts are available in LTspice:

LT3093

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

schematic 1

LT3093 Demo Board | –20V, 200mA, Ultralow Noise, Ultrahigh PSRR Negative Linear Regulator

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Product Details

Demo circuit DC2952A features the LT3093, an ultralow noise, ultrahigh power supply rejection ratio (PSRR) negative low dropout (LDO) regulator. DC2952A operates over an input range of –3.8V to –20V, and can deliver up to 200mA output current. It features ultralow noise (0.8µVRMS from 10Hz to 100kHz) and very high PSRR (73dB at 1MHz).

The EN/UVLO of LT3093 is bidirectional and can be switched with either a positive or a negative voltage. LT3093 also offers programmable current limit functionality by connecting a resistor from ILIM to GND. The VIOC tracking function controls an up-stream switching converter to maintain a constant voltage across the regulator and hence minimize power dissipation. The power good feedback (PGFB) pin is used to set a programmable power good threshold, and activates the fast start-up circuitry. To use the power good function, connect an external voltage source at VEXT. If power good and fast start-up functionality are not needed, tie PGFB to IN.

Built-in protection includes internal current limit with foldback and thermal limit with hysteresis.

The LT3093 datasheet gives a complete description of the part, operation and applications information. The datasheet must be read in conjunction with this Demo Manual for demonstration circuit DC2952A. The LT3093 is assembled in 12-lead MSOP and 3mm x 3mm DFN packages with an exposed pad on the bottom-side of the IC. Proper board layout is essential for maximum thermal performance.

Resources

DC2952A - Design Files
1.53 M

DC2952A - Demo Manual (Rev.0)
890.64 K

DC2952A - Schematic
45.88 K

Reference Designs

EVAL-CN0531-PMDZ Simplified Block Diagram

Programmable 20-Bit, Linear, Precision, Bipolar ± 5V DC Voltage Source

View Detailed Reference Design

Features and Benefits

+/-5V Output Range
20-Bit Signal Generation Control
On board precision 5V Reference
All Power Rails Generated Using a Single 3.3V Source

Part Used

Resources

AD5760, AD578x, AD579x IIO DAC GitHub Linux Driver Source Code

AD576x, AD578x, AD579x GitHub no-OS Driver Source Code

Design & Integration Tools

CN0531 Design Files
4.3 M

Videos

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