LT1761
LT1761
RECOMMENDED FOR NEW DESIGNS100mA, Low Noise, LDO Micropower Regulators in TSOT-23
- Part Models
- 50
- 1ku List Price
- Starting From $1.67
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Overview
- Low Noise: 20μVRMS (10Hz to 100kHz)
- Low Quiescent Current: 20μA
- Wide Input Voltage Range: 1.8V to 20V
- Output Current: 100mA
- Very Low Shutdown Current: <0.1μA
- Low Dropout Voltage: 300mV at 100mA
- Fixed Output Voltages: 1.2V, 1.5V, 1.8V, 2V, 2.5V, 2.8V, 3V, 3.3V, 5V
- Adjustable Output from 1.22V to 20V
- Stable with 1μF Output Capacitor
- Stable with Aluminum, Tantalum or Ceramic Capacitors
- Reverse-Battery Protected
- No Reverse Current
- No Protection Diodes Needed
- Overcurrent and Overtemperature Protected
- Available in Tiny 5-Lead TSOT-23 Package
The LT1761 series are micropower, low noise, low dropout regulators. With an external 0.01μF bypass capacitor, output noise drops to 20μVRMS over a 10Hz to 100kHz bandwidth. Designed for use in battery-powered systems, the low 20μA quiescent current makes them an ideal choice. In shutdown, quiescent current drops to less than 0.1μA. The devices are capable of operating over an input voltage from 1.8V to 20V, and can supply 100mA of output current with a dropout voltage of 300mV. Quiescent current is well controlled, not rising in dropout as it does with many other regulators.
The LT1761 regulators are stable with output capacitors as low as 1μF. Small ceramic capacitors can be used without the series resistance required by other regulators.
Internal protection circuitry includes reverse battery protection, current limiting, thermal limiting and reverse current protection. The device is available in fixed output voltages of 1.2V, 1.5V, 1.8V, 2V, 2.5V, 2.8V, 3V, 3.3V and 5V, and as an adjustable device with a 1.22V reference voltage. The LT1761 regulators are available in the 5-lead TSOT-23 package.
Applications
- Cellular Phones
- Pagers
- Battery-Powered Systems
- Frequency Synthesizers
- Wireless Modems
Documentation
Data Sheet 1
User Guide 2
Application Note 2
Design Note 3
Technical Articles 3
Brochure 1
Webcast 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 |
|---|---|---|---|
| LT1761ES5-1.2#TRMPBF | 5-Lead TSOT-23 | ||
| LT1761ES5-1.2#TRPBF | 5-Lead TSOT-23 | ||
| LT1761ES5-1.5#TRMPBF | 5-Lead TSOT-23 | ||
| LT1761ES5-1.5#TRPBF | 5-Lead TSOT-23 | ||
| LT1761ES5-1.8#TRMPBF | 5-Lead TSOT-23 | ||
| LT1761ES5-1.8#TRPBF | 5-Lead TSOT-23 | ||
| LT1761ES5-2#TRMPBF | 5-Lead TSOT-23 | ||
| LT1761ES5-2#TRPBF | 5-Lead TSOT-23 | ||
| LT1761ES5-2.5#TRMPBF | 5-Lead TSOT-23 | ||
| LT1761ES5-2.5#TRPBF | 5-Lead TSOT-23 | ||
| LT1761ES5-2.8#TRMPBF | 5-Lead TSOT-23 | ||
| LT1761ES5-2.8#TRPBF | 5-Lead TSOT-23 | ||
| LT1761ES5-3#TRMPBF | 5-Lead TSOT-23 | ||
| LT1761ES5-3#TRPBF | 5-Lead TSOT-23 | ||
| LT1761ES5-3.3#TRMPBF | 5-Lead TSOT-23 | ||
| LT1761ES5-3.3#TRPBF | 5-Lead TSOT-23 | ||
| LT1761ES5-5#TRMPBF | 5-Lead TSOT-23 | ||
| LT1761ES5-5#TRPBF | 5-Lead TSOT-23 | ||
| LT1761ES5-BYP#TRMPBF | 5-Lead TSOT-23 | ||
| LT1761ES5-BYP#TRPBF | 5-Lead TSOT-23 | ||
| LT1761ES5-SD#TRMPBF | 5-Lead TSOT-23 | ||
| LT1761ES5-SD#TRPBF | 5-Lead TSOT-23 | ||
| LT1761IS5-1.2#TRMPBF | 5-Lead TSOT-23 | ||
| LT1761IS5-1.2#TRPBF | 5-Lead TSOT-23 | ||
| LT1761IS5-1.5#TRMPBF | 5-Lead TSOT-23 | ||
| LT1761IS5-1.5#TRPBF | 5-Lead TSOT-23 | ||
| LT1761IS5-1.8#TRMPBF | 5-Lead TSOT-23 | ||
| LT1761IS5-1.8#TRPBF | 5-Lead TSOT-23 | ||
| LT1761IS5-2#TRMPBF | 5-Lead TSOT-23 | ||
| LT1761IS5-2#TRPBF | 5-Lead TSOT-23 | ||
| LT1761IS5-2.5#TRMPBF | 5-Lead TSOT-23 | ||
| LT1761IS5-2.5#TRPBF | 5-Lead TSOT-23 | ||
| LT1761IS5-2.8#TRMPBF | 5-Lead TSOT-23 | ||
| LT1761IS5-2.8#TRPBF | 5-Lead TSOT-23 | ||
| LT1761IS5-3#TRMPBF | 5-Lead TSOT-23 | ||
| LT1761IS5-3#TRPBF | 5-Lead TSOT-23 | ||
| LT1761IS5-3.3#TRMPBF | 5-Lead TSOT-23 | ||
| LT1761IS5-3.3#TRPBF | 5-Lead TSOT-23 | ||
| LT1761IS5-5#TRMPBF | 5-Lead TSOT-23 | ||
| LT1761IS5-5#TRPBF | 5-Lead TSOT-23 | ||
| LT1761IS5-BYP#TRMPBF | 5-Lead TSOT-23 | ||
| LT1761IS5-BYP#TRPBF | 5-Lead TSOT-23 | ||
| LT1761IS5-SD#TRMPBF | 5-Lead TSOT-23 | ||
| LT1761IS5-SD#TRPBF | 5-Lead TSOT-23 | ||
| LT1761MPS5-1.8#TRMPBF | 5-Lead TSOT-23 | ||
| LT1761MPS5-1.8#TRPBF | 5-Lead TSOT-23 | ||
| LT1761MPS5-3.3#TRMPBF | 5-Lead TSOT-23 | ||
| LT1761MPS5-3.3#TRPBF | 5-Lead TSOT-23 | ||
| LT1761MPS5-5#TRMPBF | 5-Lead TSOT-23 | ||
| LT1761MPS5-5#TRPBF | 5-Lead TSOT-23 |
This is the most up-to-date revision of the Data Sheet.
Software Resources
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Tools & Simulations
LTspice 1
Models for the following parts are available in LTspice:
- LT1761-1.2
- LT1761-1.5
- LT1761-1.8
- LT1761-2
- LT1761-2.5
- LT1761-2.8
- LT1761-3
- LT1761-3.3
- LT1761-5
- LT1761-BYP
- LT1761-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
LT1761ES5-BYP/SD Demo Board | 2 Circuits: Low Output Noise and Low Current Shutdown, 2.3V ≤ VIN ≤ 20V, VOUT = 1.22/1.8/2.0/2.5/2.8/3.0/3.3/5.0V @ 100mA
Resources
ADALM2000 Power Booster Board
Resources
LT1761 Demo Board | 100mA Low Noise Micropower LDO Regulator
Resources
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