Datasheet LT1761 (Analog Devices)
| Hersteller | Analog Devices |
| Beschreibung | 100mA, Low Noise, LDO Micropower Regulators in TSOT-23 |
| Seiten / Seite | 22 / 1 — FEATURES. DESCRIPTION. Low Noise: 20μVRMS (10Hz to 100kHz). Low Quiescent … |
| Dateiformat / Größe | PDF / 1.2 Mb |
| Dokumentensprache | Englisch |
FEATURES. DESCRIPTION. Low Noise: 20μVRMS (10Hz to 100kHz). Low Quiescent Current: 20μA. Wide Input Voltage Range: 1.8V to 20V
Modelllinie für dieses Datenblatt
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Textversion des Dokuments
LT1761 Series 100mA, Low Noise, LDO Micropower Regulators in TSOT-23
FEATURES DESCRIPTION
n
Low Noise: 20μVRMS (10Hz to 100kHz)
The LT®1761 series are micropower, low noise, low n
Low Quiescent Current: 20μA
dropout regulators. With an external 0.01μF bypass n
Wide Input Voltage Range: 1.8V to 20V
capacitor, output noise drops to 20μVRMS over a 10Hz to n
Output Current: 100mA
100kHz bandwidth. Designed for use in battery-powered n
Very Low Shutdown Current: <0.1μA
systems, the low 20μA quiescent current makes them an n
Low Dropout Voltage: 300mV at 100mA
ideal choice. In shutdown, quiescent current drops to less n Fixed Output Voltages: 1.2V, 1.5V, 1.8V, 2V, 2.5V, than 0.1μA. The devices are capable of operating over an 2.8V, 3V, 3.3V, 5V input voltage from 1.8V to 20V, and can supply 100mA of n Adjustable Output from 1.22V to 20V output current with a dropout voltage of 300mV. Quiescent n Stable with 1μF Output Capacitor current is well controlled, not rising in dropout as it does n Stable with Aluminum, Tantalum or with many other regulators. Ceramic Capacitors The LT1761 regulators are stable with output capacitors as n Reverse-Battery Protected low as 1μF. Small ceramic capacitors can be used without n No Reverse Current the series resistance required by other regulators. n No Protection Diodes Needed n Overcurrent and Overtemperature Protected Internal protection circuitry includes reverse battery n Available in Tiny 5-Lead TSOT-23 Package protection, current limiting, thermal limiting and reverse current protection. The device is available in fi xed output
APPLICATIONS
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 n Cellular Phones voltage. The LT1761 regulators are available in the 5-lead n Pagers TSOT-23 package. n Battery-Powered Systems n L Frequency Synthesizers , LT, LTC, LTM, Linear Technology, the Linear logo and Burst Mode are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective n Wireless Modems owners.
TYPICAL APPLICATION 10Hz to 100kHz Output Noise 5V Low Noise Regulator
5V AT100mA IN OUT VIN 20μVRMS NOISE + 5.4V TO 1μF V LT1761-5 0.01μF 10μF OUT 20μVRMS 20V 100μV/DIV SHDN BYP 1761 TA01 GND 1761 TA01b 1761sff 1 Document Outline FEATURES DESCRIPTION APPLICATIONS TYPICAL APPLICATION ABSOLUTE MAXIMUM RATINGS PIN CONFIGURATION ORDER INFORMATION ELECTRICAL CHARACTERISTICS TYPICAL PERFORMANCE CHARACTERISTICS PIN FUNCTIONS APPLICATIONS INFORMATION PACKAGE DESCRIPTION REVISION HISTORY TYPICAL APPLICATION RELATED PARTS
FEATURES DESCRIPTION
n
Low Noise: 20μVRMS (10Hz to 100kHz)
The LT®1761 series are micropower, low noise, low n
Low Quiescent Current: 20μA
dropout regulators. With an external 0.01μF bypass n
Wide Input Voltage Range: 1.8V to 20V
capacitor, output noise drops to 20μVRMS over a 10Hz to n
Output Current: 100mA
100kHz bandwidth. Designed for use in battery-powered n
Very Low Shutdown Current: <0.1μA
systems, the low 20μA quiescent current makes them an n
Low Dropout Voltage: 300mV at 100mA
ideal choice. In shutdown, quiescent current drops to less n Fixed Output Voltages: 1.2V, 1.5V, 1.8V, 2V, 2.5V, than 0.1μA. The devices are capable of operating over an 2.8V, 3V, 3.3V, 5V input voltage from 1.8V to 20V, and can supply 100mA of n Adjustable Output from 1.22V to 20V output current with a dropout voltage of 300mV. Quiescent n Stable with 1μF Output Capacitor current is well controlled, not rising in dropout as it does n Stable with Aluminum, Tantalum or with many other regulators. Ceramic Capacitors The LT1761 regulators are stable with output capacitors as n Reverse-Battery Protected low as 1μF. Small ceramic capacitors can be used without n No Reverse Current the series resistance required by other regulators. n No Protection Diodes Needed n Overcurrent and Overtemperature Protected Internal protection circuitry includes reverse battery n Available in Tiny 5-Lead TSOT-23 Package protection, current limiting, thermal limiting and reverse current protection. The device is available in fi xed output
APPLICATIONS
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 n Cellular Phones voltage. The LT1761 regulators are available in the 5-lead n Pagers TSOT-23 package. n Battery-Powered Systems n L Frequency Synthesizers , LT, LTC, LTM, Linear Technology, the Linear logo and Burst Mode are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective n Wireless Modems owners.
TYPICAL APPLICATION 10Hz to 100kHz Output Noise 5V Low Noise Regulator
5V AT100mA IN OUT VIN 20μVRMS NOISE + 5.4V TO 1μF V LT1761-5 0.01μF 10μF OUT 20μVRMS 20V 100μV/DIV SHDN BYP 1761 TA01 GND 1761 TA01b 1761sff 1 Document Outline FEATURES DESCRIPTION APPLICATIONS TYPICAL APPLICATION ABSOLUTE MAXIMUM RATINGS PIN CONFIGURATION ORDER INFORMATION ELECTRICAL CHARACTERISTICS TYPICAL PERFORMANCE CHARACTERISTICS PIN FUNCTIONS APPLICATIONS INFORMATION PACKAGE DESCRIPTION REVISION HISTORY TYPICAL APPLICATION RELATED PARTS