LT1964
LT1964
RECOMMENDED FOR NEW DESIGNS200mA, Low Noise, Low Dropout Negative Micropower Regulator
- Part Models
- 16
- 1ku List Price
- Starting From $2.18
Viewing:
Overview
- Low Noise: 30µVRMS (10Hz to 100kHz)
- Low Quiescent Current: 30µA
- Low Dropout Voltage: 340mV
- Output Current: 200mA
- Fixed Output Voltage: –5V
- Adjustable Output from –1.22V to –20V
- Positive or Negative Shutdown Logic
- 3µA Quiescent Current in Shutdown
- Stable with 1µF Output Capacitor
- Stable with Aluminum, Tantalum, or Ceramic Capacitors
- Thermal Limiting
- Low Profile (1mm) ThinSOT™ and (0.75mm) 8-Pin 3mm × 3mm DFN Packages
The LT1964 is a micropower low noise, low dropout negative regulator. The device is capable of supplying 200mA of output current with a dropout voltage of 340mV. Low quiescent current (30µA operating and 3µA shutdown) makes the LT1964 an excellent choice for battery-powered applications. Quiescent current is well controlled in dropout.
Other features of the LT1964 include low output noise. With the addition of an external 0.01µF bypass capacitor, output noise is reduced to 30µVRMS over a 10Hz to 100kHz bandwidth. The LT1964 is capable of operating with small capacitors and is stable with output capacitors as low as 1µF. Small ceramic capacitors can be used without the necessary addition of ESR as is common with other regulators. Internal protection circuitry includes reverse output protection, current limiting, and thermal limiting. The device is available with a fixed output voltage of –5V and as an adjustable device with a –1.22V reference voltage. The LT1964 regulators are available in a low profile (1mm) ThinSOT and the low profile (0.75mm) 8-pin (3mm × 3mm) DFN packages.
Applications
- Battery-Powered Instruments
- Low Noise Regulator for Noise-Sensitive Instrumentation
- Negative Complement to LT1761 Family of Positive LDOs
Documentation
Data Sheet 1
User Guide 2
Design Note 1
Technical Articles 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 |
|---|---|---|---|
| LT1964EDD#PBF | 8-Lead DFN (3mm x 3mm x 0.75mm w/ EP) | ||
| LT1964EDD#TRPBF | 8-Lead DFN (3mm x 3mm x 0.75mm w/ EP) | ||
| LT1964ES5-5#TRMPBF | 5-Lead TSOT-23 | ||
| LT1964ES5-5#TRPBF | 5-Lead TSOT-23 | ||
| LT1964ES5-BYP#TRMPBF | 5-Lead TSOT-23 | ||
| LT1964ES5-BYP#TRPBF | 5-Lead TSOT-23 | ||
| LT1964ES5-SD#TRMPBF | 5-Lead TSOT-23 | ||
| LT1964ES5-SD#TRPBF | 5-Lead TSOT-23 | ||
| LT1964IDD#PBF | 8-Lead DFN (3mm x 3mm x 0.75mm w/ EP) | ||
| LT1964IDD#TRPBF | 8-Lead DFN (3mm x 3mm x 0.75mm w/ EP) | ||
| LT1964IS5-5#TRMPBF | 5-Lead TSOT-23 | ||
| LT1964IS5-5#TRPBF | 5-Lead TSOT-23 | ||
| LT1964IS5-BYP#TRMPBF | 5-Lead TSOT-23 | ||
| LT1964IS5-BYP#TRPBF | 5-Lead TSOT-23 | ||
| LT1964IS5-SD#TRMPBF | 5-Lead TSOT-23 | ||
| LT1964IS5-SD#TRPBF | 5-Lead TSOT-23 |
This is the most up-to-date revision of the Data Sheet.
Software Resources
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Request a Driver/SoftwareHardware Ecosystem
| Parts | Product Life Cycle | Description |
|---|---|---|
| LDO Linear Regulators 1 | ||
| LT3090 | RECOMMENDED FOR NEW DESIGNS | –36V, 600mA Negative Linear Regulator with Programmable Current Limit |
Tools & Simulations
LTspice 1
Models for the following parts are available in LTspice:
- LT1964-5
- LT1964-BYP
- LT1964-SD
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
LT1964ES56 Demo Board | Negative Low Noise LDO Regulator, -2.3V ≤ VIN ≤ -20V, VOUT = -1.22V/-5V @ 200mA
Resources
LT1964 Signal Chain Evaluation Board | 200mA Low Noise Negative LDO