Datasheet LT1117, LT1117-2.85, LT1117-3.3, LT1117-5 (Analog Devices)
| Hersteller | Analog Devices |
| Beschreibung | 800mA Low Dropout Positive Regulators Adjustable and Fixed 2.85V,3.3V, 5V |
| Seiten / Seite | 16 / 1 — FEATURES. DESCRIPTION. APPLICATIONS. TYPICAL APPLICATION. Active … |
| Dateiformat / Größe | PDF / 193 Kb |
| Dokumentensprache | Englisch |
FEATURES. DESCRIPTION. APPLICATIONS. TYPICAL APPLICATION. Active Terminator for SCSI-2 Bus. Dropout Voltage (VIN – VOUT)
Modelllinie für dieses Datenblatt
- LT1117CM#PBF LT1117CM#PBF LT1117CM#TRPBF LT1117CM#TRPBF LT1117CM-2.85#PBF LT1117CM-2.85#PBF LT1117CM-2.85#TRPBF LT1117CM-2.85#TRPBF LT1117CM-3.3#PBF LT1117CM-3.3#PBF LT1117CM-3.3#TRPBF LT1117CM-3.3#TRPBF LT1117CM-5#PBF LT1117CM-5#PBF LT1117CM-5#TRPBF LT1117CM-5#TRPBF LT1117CST#PBF LT1117CST#PBF LT1117CST#TRPBF LT1117CST#TRPBF LT1117CST-2.85#PBF LT1117CST-2.85#PBF LT1117CST-2.85#TRPBF LT1117CST-2.85#TRPBF LT1117CST-3.3#PBF LT1117CST-3.3#PBF LT1117CST-3.3#TRPBF LT1117CST-3.3#TRPBF LT1117CST-5#PBF LT1117CST-5#PBF LT1117CST-5#TRPBF LT1117CST-5#TRPBF LT1117IST#PBF LT1117IST#PBF LT1117IST#TRPBF LT1117IST#TRPBF LT1117IST-2.85#PBF LT1117IST-2.85#PBF LT1117IST-2.85#TRPBF LT1117IST-2.85#TRPBF LT1117IST-3.3#PBF LT1117IST-3.3#PBF LT1117IST-3.3#TRPBF LT1117IST-3.3#TRPBF LT1117IST-5#PBF LT1117IST-5#PBF LT1117IST-5#TRPBF LT1117IST-5#TRPBF
Textversion des Dokuments
LT1117/LT1117-2.85 LT1117-3.3/LT1117-5 800mA Low Dropout Positive Regulators Adjustable and Fixed 2.85V, 3.3V, 5V
FEATURES DESCRIPTION
n Space Saving SOT-223 Surface Mount Package The LT®1117 is a positive low dropout regulator designed n 3-Terminal Adjustable or Fixed 2.85V, 3.3V, 5V to provide up to 800mA of output current. The device is n Output Current of 800mA available in an adjustable version and fixed output voltages n Operates Down to 1V Dropout of 2.85V, 3.3V and 5V. The 2.85V version is designed n Guaranteed Dropout Voltage at Multiple Current Levels specifically to be used in Active Terminators for the SCSI n 0.2% Line Regulation Max bus. All internal circuitry is designed to operate down to 1V n 0.4% Load Regulation Max input to output differential. Dropout voltage is guaranteed at a maximum of 1.2V at 800mA, decreasing at lower load currents. On chip trimming adjusts the reference/output
APPLICATIONS
voltage to within ± 1%. Current limit is also trimmed in n Active SCSI Terminators order to minimize the stress on both the regulator and the n High Effi ciency Linear Regulators power source circuitry under overload conditions. n Post Regulators for Switching Supplies The low profi le surface mount SOT-223 package allows the n Battery Chargers device to be used in applications where space is limited. The n 5V to 3.3V Linear Regulators LT1117 requires a minimum of 10μF of output capacitance L, LT, LTC, LTM, Linear Technology, OPTI-LOOP and the Linear logo are registered trademarks for stability. Output capacitors of this size or larger are of Linear Technology Corporation. UltraFast is a trademark of Linear Technology Corporation. All other trademarks are the property of their respective owners. normally included in most regulator designs. Unlike PNP type regulators where up to 10% of the output current is wasted as quiescent current, the quiescent current of the LT1117 fl ows into the load, increasing effi ciency.
TYPICAL APPLICATION Active Terminator for SCSI-2 Bus Dropout Voltage (VIN – VOUT)
1.4 110Ω –40°C ≤ TJ < 0°C 1.2 110Ω 0°C ≤ TJ ≤ 125°C LT1117-2.85 1.0 110Ω 18 TO 27 T IN OUT J = 25°C LINES TAGE (V) 0.8 GND TJ = 125°C 4.75V TO + + 10μF 110Ω 5.25V 22μF 0.6 DROPOUT VOL 0.4 1117 TA01 0.2 INDICATES GUARANTEED TEST POINT 0 0 100 200 300 400 500 600 700 800 OUTPUT CURRENT (mA) 1117 TA02 1117fd 1
FEATURES DESCRIPTION
n Space Saving SOT-223 Surface Mount Package The LT®1117 is a positive low dropout regulator designed n 3-Terminal Adjustable or Fixed 2.85V, 3.3V, 5V to provide up to 800mA of output current. The device is n Output Current of 800mA available in an adjustable version and fixed output voltages n Operates Down to 1V Dropout of 2.85V, 3.3V and 5V. The 2.85V version is designed n Guaranteed Dropout Voltage at Multiple Current Levels specifically to be used in Active Terminators for the SCSI n 0.2% Line Regulation Max bus. All internal circuitry is designed to operate down to 1V n 0.4% Load Regulation Max input to output differential. Dropout voltage is guaranteed at a maximum of 1.2V at 800mA, decreasing at lower load currents. On chip trimming adjusts the reference/output
APPLICATIONS
voltage to within ± 1%. Current limit is also trimmed in n Active SCSI Terminators order to minimize the stress on both the regulator and the n High Effi ciency Linear Regulators power source circuitry under overload conditions. n Post Regulators for Switching Supplies The low profi le surface mount SOT-223 package allows the n Battery Chargers device to be used in applications where space is limited. The n 5V to 3.3V Linear Regulators LT1117 requires a minimum of 10μF of output capacitance L, LT, LTC, LTM, Linear Technology, OPTI-LOOP and the Linear logo are registered trademarks for stability. Output capacitors of this size or larger are of Linear Technology Corporation. UltraFast is a trademark of Linear Technology Corporation. All other trademarks are the property of their respective owners. normally included in most regulator designs. Unlike PNP type regulators where up to 10% of the output current is wasted as quiescent current, the quiescent current of the LT1117 fl ows into the load, increasing effi ciency.
TYPICAL APPLICATION Active Terminator for SCSI-2 Bus Dropout Voltage (VIN – VOUT)
1.4 110Ω –40°C ≤ TJ < 0°C 1.2 110Ω 0°C ≤ TJ ≤ 125°C LT1117-2.85 1.0 110Ω 18 TO 27 T IN OUT J = 25°C LINES TAGE (V) 0.8 GND TJ = 125°C 4.75V TO + + 10μF 110Ω 5.25V 22μF 0.6 DROPOUT VOL 0.4 1117 TA01 0.2 INDICATES GUARANTEED TEST POINT 0 0 100 200 300 400 500 600 700 800 OUTPUT CURRENT (mA) 1117 TA02 1117fd 1