Datasheet LT1965 (Analog Devices)
| Fabricante | Analog Devices |
| Descripción | 1.1A, Low Noise, Low Dropout Linear Regulator |
| Páginas / Página | 22 / 1 — Features. Description. Output Current: 1.1A. Dropout Voltage: 310mV. Low … |
| Formato / tamaño de archivo | PDF / 998 Kb |
| Idioma del documento | Inglés |
Features. Description. Output Current: 1.1A. Dropout Voltage: 310mV. Low Noise: 40µVRMS (10Hz to 100kHz)
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Versión de texto del documento
LT1965 Series 1.1A, Low Noise, Low Dropout Linear Regulator
Features Description
n
Output Current: 1.1A
The LT®1965 series are low noise, low dropout linear regu- n
Dropout Voltage: 310mV
lators. The devices supply 1.1A of output current with a n
Low Noise: 40µVRMS (10Hz to 100kHz)
310mV typical dropout voltage. Operating quiescent current n
500µA Quiescent Current (Adjustable Version)
is 500µA for the adjustable version, reducing to <1µA in n Wide Input Voltage Range: 1.8V to 20V shutdown. Quiescent current is well controlled; it does not n No Protection Diodes Needed rise in dropout as with many other regulators. The LT1965 n Controlled Quiescent Current in Dropout regulators have very low output noise which makes them n Adjustable Output from 1.20V to 19.5V ideal for sensitive RF and DSP supply applications. n Fixed Output Voltages: 1.5V, 1.8V, 2.5V, 3.3V Output voltage ranges from 1.20V to 19.5V. The LT1965 n < 1µA Quiescent Current in Shutdown regulators are stable with output capacitors as low as n Stable with 10µF Output Capacitor 10µF. Internal protection circuitry includes reverse-battery n Stable with Ceramic or Tantalum Capacitors protection, current limiting with foldback, thermal limit- n Reverse-Battery Protection ing and reverse-current protection. The LT1965 series n No Reverse Current are available in fixed output voltages of 1.5V, 1.8V, 2.5V, n Current Limit with Foldback Protection 3.3V, and as an adjustable device with a 1.20V reference n Thermal Limiting voltage. The package offerings include the 5-lead TO-220, n 5-Lead TO-220, DD-Pak, Thermally Enhanced 8-Lead 5-lead DD-Pak as well as the thermally enhanced 8-lead MSOP and 8-Lead 3mm × 3mm DFN Packages MSOP and low profile (0.75mm) 8-lead 3mm × 3mm DFN.
applications
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and ThinSOT is a trademark of Linear Technology Corporation. All other trademarks are the property of their respective owners. n Logic Power Supplies n Post Regulator for Switching Supplies n Low Noise Instrumentation
typical application Dropout Voltage 3.3V to 2.5V Regulator
400 TJ = 25°C 350 300 2.5V IN OUT 1.1A + + VIN > 3V 250 10µF* 10µF* TO 20V LT1965-2.5 200 SHDN SENSE 150 GND *CERAMIC OR TANTALUM DROPOUT VOLTAGE (mV) 100 1965 TA01 50 0 0 0.2 0.4 0.6 0.8 1 1.2 OUTPUT CURRENT (A) 1965 TA01b 1965fb For more information www.linear.com/LT1965 1 Document Outline Features Description Applications Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Applications Information Typical Applications Package Description Revision History Related Parts
Features Description
n
Output Current: 1.1A
The LT®1965 series are low noise, low dropout linear regu- n
Dropout Voltage: 310mV
lators. The devices supply 1.1A of output current with a n
Low Noise: 40µVRMS (10Hz to 100kHz)
310mV typical dropout voltage. Operating quiescent current n
500µA Quiescent Current (Adjustable Version)
is 500µA for the adjustable version, reducing to <1µA in n Wide Input Voltage Range: 1.8V to 20V shutdown. Quiescent current is well controlled; it does not n No Protection Diodes Needed rise in dropout as with many other regulators. The LT1965 n Controlled Quiescent Current in Dropout regulators have very low output noise which makes them n Adjustable Output from 1.20V to 19.5V ideal for sensitive RF and DSP supply applications. n Fixed Output Voltages: 1.5V, 1.8V, 2.5V, 3.3V Output voltage ranges from 1.20V to 19.5V. The LT1965 n < 1µA Quiescent Current in Shutdown regulators are stable with output capacitors as low as n Stable with 10µF Output Capacitor 10µF. Internal protection circuitry includes reverse-battery n Stable with Ceramic or Tantalum Capacitors protection, current limiting with foldback, thermal limit- n Reverse-Battery Protection ing and reverse-current protection. The LT1965 series n No Reverse Current are available in fixed output voltages of 1.5V, 1.8V, 2.5V, n Current Limit with Foldback Protection 3.3V, and as an adjustable device with a 1.20V reference n Thermal Limiting voltage. The package offerings include the 5-lead TO-220, n 5-Lead TO-220, DD-Pak, Thermally Enhanced 8-Lead 5-lead DD-Pak as well as the thermally enhanced 8-lead MSOP and 8-Lead 3mm × 3mm DFN Packages MSOP and low profile (0.75mm) 8-lead 3mm × 3mm DFN.
applications
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and ThinSOT is a trademark of Linear Technology Corporation. All other trademarks are the property of their respective owners. n Logic Power Supplies n Post Regulator for Switching Supplies n Low Noise Instrumentation
typical application Dropout Voltage 3.3V to 2.5V Regulator
400 TJ = 25°C 350 300 2.5V IN OUT 1.1A + + VIN > 3V 250 10µF* 10µF* TO 20V LT1965-2.5 200 SHDN SENSE 150 GND *CERAMIC OR TANTALUM DROPOUT VOLTAGE (mV) 100 1965 TA01 50 0 0 0.2 0.4 0.6 0.8 1 1.2 OUTPUT CURRENT (A) 1965 TA01b 1965fb For more information www.linear.com/LT1965 1 Document Outline Features Description Applications Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Applications Information Typical Applications Package Description Revision History Related Parts