LT1965 - 1.1A, Low Noise, Low Dropout Linear …

1 LT1965 Series11965fbFor more information , Low Noise, Low Dropout Linear RegulatorThe LT 1965 series are low noise, low Dropout Linear regu-lators. The devices supply of output current with a 310mV typical Dropout voltage. Operating quiescent current is 500 A for the adjustable version, reducing to <1 A in shutdown. Quiescent current is well controlled; it does not rise in Dropout as with many other regulators . The LT1965 regulators have very low output noise which makes them ideal for sensitive RF and DSP supply voltage ranges from to The LT1965 regulators are stable with output capacitors as low as 10 F. Internal protection circuitry includes reverse-battery protection, current limiting with foldback, thermal limit-ing and reverse-current protection. The LT1965 series are available in fixed output voltages of , , , , and as an adjustable device with a reference voltage. The package offerings include the 5-lead TO-220, 5-lead DD-Pak as well as the thermally enhanced 8-lead MSOP and low profile ( ) 8-lead 3mm 3mm to Regulatorn Output Current: Dropout Voltage: 310mVn Low Noise: 40 VRMS (10Hz to 100kHz)n 500 A Quiescent Current (Adjustable Version)n Wide Input Voltage Range: to 20Vn No Protection Diodes Neededn Controlled Quiescent Current in Dropoutn Adjustable Output from to Fixed Output Voltages.

2 , , , < 1 A Quiescent Current in Shutdownn Stable with 10 F Output Capacitorn Stable with Ceramic or Tantalum Capacitorsn Reverse-Battery Protectionn No Reverse Currentn Current Limit with Foldback Protectionn Thermal Limitingn 5-Lead TO-220, DD-Pak, Thermally Enhanced 8-Lead MSOP and 8-Lead 3mm 3mm DFN Packagesn Logic Power Suppliesn Post Regulator for Switching Suppliesn Low Noise InstrumentationDropout Voltagetypical applicationOUTPUT CURRENT (A)00 Dropout VOLTAGE (mV) TA01bTJ = 25 CINSHDN10 F**CERAMIC OR TANTALUM1965 TA01 OUTVIN > 3 VTO F*++L, LT, LT C, LT M, 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. LT1965 Series21965fbFor more information MaxiMuM ratingsIN Pin Voltage .. 22 VOUT Pin Voltage .. 22 VInput to Output Differential Voltage (Note 2) .. 22 VSENSE Pin Voltage .. 22 VADJ Pin Voltage .. 9 VSHDN Pin Voltage.

3 22V(Note 1)TOP VIEWDD PACKAGE8-LEAD (3mm 3mm) PLASTIC DFN567894321 OUTOUTSENSE/ADJ*GNDININSHDNGND TJMAX = 150 C, JA = 65 C/W, JC = 3 C/W EXPOSED PAD (PIN 9) IS GND, MUST BE SOLDERED TO PCB *PIN 3 = SENSE FOR *PIN 3 = ADJ FOR LT19651234 OUTOUTSENSE/ADJ*GND87659 ININSHDNGNDTOP VIEWMS8E PACKAGE8-LEAD PLASTIC MSOP TJMAX = 125 C, JA = 60 C/W, JC = 10 C/WEXPOSED PAD (PIN 9) IS GND, MUST BE SOLDERED TO PCB *PIN 3 = SENSE FOR *PIN 3 = ADJ FOR LT1965Q PACKAGE5-LEAD PLASTIC DD-PAKFRONT VIEWSENSE/ADJ*OUTGNDINSHDNTAB ISGND54321 TJMAX = 150 C, JA = 30 C/W, JC = 3 C/W *PIN 5 = SENSE FOR *PIN 5 = ADJ FOR LT1965T PACKAGE5-LEAD PLASTIC TO-220 SENSE/ADJ*OUTGNDINSHDNFRONT VIEW54321 TAB ISGND TJMAX = 150 C, JA = 50 C/W, JC = 3 C/W *PIN 5 = SENSE FOR *PIN 5 = ADJ FOR LT1965 Output Short-Circuit Duration ..IndefiniteOperating Junction Temper atur e Range (Notes 3, 5, 13)E-, I-Grades .. 40 C to 125 C H-Grade .. 40 C to 150 CStorage Temper atur e Range .. 65 C to 150 C Lead Temper atur e (Soldering, 10 sec) (Only for MSOP, TO-220, DD-Pak Packages).

4 300 CLEAD FREE FINISHTAPE AND REELPART MARKING*PACKAGE DESCRIPTIONTEMPERATURE RANGELT1965 EDD#PBFLT1965 EDD#TRPBFLCXW8-Lead (3mm 3mm) Plastic DFN 40 C to 125 CLT1965 IDD#PBFLT1965 IDD#TRPBFLCXW8-Lead (3mm 3mm) Plastic DFN 40 C to 125 # #TRPBFLDKW8-Lead (3mm 3mm) Plastic DFN 40 C to 125 # #TRPBFLDKW8-Lead (3mm 3mm) Plastic DFN 40 C to 125 # #TRPBFLDKY8-Lead (3mm 3mm) Plastic DFN 40 C to 125 # #TRPBFLDKY8-Lead (3mm 3mm) Plastic DFN 40 C to 125 # #TRPBFLDMB8-Lead (3mm 3mm) Plastic DFN 40 C to 125 # #TRPBFLDMB8-Lead (3mm 3mm) Plastic DFN 40 C to 125 # #TRPBFLDMD8-Lead (3mm 3mm) Plastic DFN 40 C to 125 Cpin conFigurationorDer inForMationLT1965 Series31965fbFor more information inForMationLEAD FREE FINISHTAPE AND REELPART MARKING*PACKAGE DESCRIPTIONTEMPERATURE # #TRPBFLDMD8-Lead (3mm 3mm) Plastic DFN 40 C to 125 CLT1965 EMS8E#PBFLT1965 EMS8E#TRPBFLTCXX8-Lead Plastic MSOP 40 C to 125 CLT1965 IMS8E#PBFLT1965 IMS8E#TRPBFLTCXX8-Lead Plastic MSOP 40 C to 125 # #TRPBFLTDKX8-Lead Plastic MSOP 40 C to 125 # #TRPBFLTDKX8-Lead Plastic MSOP 40 C to 125 # #TRPBFLTDKZ8-Lead Plastic MSOP 40 C to 125 # #TRPBFLTDKZ8-Lead Plastic MSOP 40 C to 125 # #TRPBFLTDMC8-Lead Plastic MSOP 40 C to 125 # #TRPBFLTDMC8-Lead Plastic MSOP 40 C to 125 # #TRPBFLTDMF8-Lead Plastic MSOP 40 C to 125 # #TRPBFLTDMF8-Lead Plastic MSOP 40 C to 125 CLT1965EQ#PBFLT1965EQ#TRPBFLT1965Q5-Lead Plastic DD-Pak 40 C to 125 CLT1965IQ#PBFLT1965IQ#TRPBFLT1965Q5-Lead Plastic DD-Pak 40 C to 125 CLT1965HQ#PBFLT1965HQ#TRPBFLT1965Q5-Lead Plastic DD-Pak 40 C to 150 # # Plastic DD-Pak 40 C to 125 # # Plastic DD-Pak 40 C to 125 # # Plastic DD-Pak 40 C to 125 # # Plastic DD-Pak 40 C to 125 # # Plastic DD-Pak 40 C to 125 # # Plastic DD-Pak 40 C to 125 # # Plastic DD-Pak 40 C to 125 # # Plastic

5 DD-Pak 40 C to 125 CLT1965ET#PBFN/ALT1965T5-Lead Plastic TO-220 40 C to 125 CLT1965IT#PBFN/ALT1965T5-Lead Plastic TO-220 40 C to 125 CLT1965HT#PBFN/ALT1965T5-Lead Plastic TO-220 40 C to 150 # Plastic TO-220 40 C to 125 # Plastic TO-220 40 C to 125 # Plastic TO-220 40 C to 125 # Plastic TO-220 40 C to 125 # Plastic TO-220 40 C to 125 # Plastic TO-220 40 C to 125 # Plastic TO-220 40 C to 125 # Plastic TO-220 40 C to 125 CConsult LT C Marketing for parts specified with wider operating temperature ranges. *Temperature grades are identified by a label on the shipping container. Consult LT C Marketing for information on nonstandard lead based finish more information on lead free part marking, go to: For more information on tape and reel specifications, go to: Series41965fbFor more information characteristicsPARAMETERCONDITIONSMINTYP MAXUNITSM inimum Input Voltage (Notes 4, 12)ILOAD = ILOAD = (TJ < 125 C) ILOAD = 1A (H-Grade, TJ > 125 C) V VRegulated Output Voltage (Note 5) , VIN = , ILOAD = 1mA , < VIN < 20V, 1mA < ILOAD < , VIN = , ILOAD = 1mA , < VIN < 20V, 1mA < ILOAD < , VIN = 3V, ILOAD = 1mA , < VIN < 20V, 1mA < ILOAD < , VIN = , ILOAD = 1mA , < VIN < 20V, 1mA < ILOAD < VADJ Pin Voltage (Notes 4, 5)VIN = , ILOAD = 1mA < VIN < 20V, 1mA < ILOAD < (TJ < 125 C) < VIN < 20V, 1mA < ILOAD < 1A (H-Grade, TJ > 125 C) V VLine , VIN = to 20V, ILOAD = 1mA , VIN = to 20V, ILOAD = 1mA , VIN = 3V to 20V, ILOAD = 1mA , VIN = to 20V, ILOAD = 1mA LT1965 , VIN = to 20V, ILOAD = 1mA (E-, I-Grades) (Note 4) LT1965 , VIN = to 20V, ILOAD = 1mA (H-Grade) (Note 4)

6 L l l l l 4 3 39 10 16 8 12mV mV mV mV mV mVLoad , VIN = , ILOAD = 1mA to , VIN = , ILOAD = 1mA to 20mV , VIN = , ILOAD = 1mA to , VIN = , ILOAD = 1mA to 12 24mV , VIN = , ILOAD = 1mA to , VIN = , ILOAD = 1mA to 33mV , VIN = , ILOAD = 1mA to , VIN = , ILOAD = 1mA to 44mV mVLT1965, VIN = , ILOAD = 1mA to (Note 4) LT1965 , VIN = , ILOAD = 1mA to (TJ < 125 C) LT1965 , VIN = , ILOAD = 1mA to 1A (H-Grade, TJ > 125 C) 16 22mV mV mVDropout Voltage VIN = VOUT(NOMINAL) (Notes 6, 7, 12)ILOAD = 1mA ILOAD = 1mA VILOAD = 100mA ILOAD = 100mA VILOAD = 500mA ILOAD = 500mA VILOAD = ILOAD = (TJ < 125 C) ILOAD = 1A (H-Grade, TJ > 125 C) V VGND Pin Current VIN = VOUT(NOMINAL) + 1V (Notes 6, 8)ILOAD = 0mA ILOAD = 1mA ILOAD = 100mA ILOAD = 500mA ILOAD = (TJ < 125 C) ILOAD = 1A (H-Grade, TJ > 125 C)l l l l 20 40 40mA mA mA mA mA mAOutput Voltage NoiseCOUT = 10 F, ILOAD = , BW = 10Hz to 100kHz40 VRMSADJ Pin Bias Current (Notes 4, 9) AShutdown ThresholdVOUT = Off to On VOUT = On to Offl l V The l denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25 C.

7 (Note 3) LT1965 Series51965fbFor more information characteristicsNote 1: Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. Exposure to any Absolute Maximum Rating condition for extended periods may affect device reliability and 2: Absolute maximum input to output differential voltage is not achievable with all combinations of rated IN pin and OUT pin voltages. With the IN pin at 22V, the OUT pin may not be pulled below 0V. The total measured voltage from IN to OUT must not exceed 3: The LT1965 regulators are tested and specified under pulse load conditions such that TJ @ TA. The LT1965E regulators are 100% tested at TA = 25 C and performance is guaranteed from 0 C to 125 C. Performance of the LT1965E over the full 40 C to 125 C operating junction temperature range is assured by design, characterization and correlation with statistical process controls. The LT1965I regulators are guaranteed over the full 40 C to 125 C operating junction temperature range.

8 The LT1965H is tested at 150 C operating junction temperature. High junction temperatures degrade operating lifetimes. Operating lifetime is derated at junction temperatures greater than 125 4: The LT1965 adjustable version is tested and specified for these conditions with the ADJ connected to the OUT pin. Note 5: Maximum junction temperature limits operating conditions. The regulated output voltage specification does not apply for all possible combinations of input voltage and output current. Limit the output current range if operating at the maximum input voltage. Limit the input-to-output voltage differential if operating at the maximum output 6: To satisfy minimum input voltage requirements, the LT1965 adjustable version is tested and specified for these conditions with an external resistor divider (bottom , top ) for an output voltage of The external resistor divider adds 300 A of output DC load current. This external current is not factored into GND pin 7: Dropout voltage is the minimum input-to-output voltage differential needed to maintain regulation at a specified output current.

9 In Dropout , the output voltage equals: (VIN VDROPOUT)Note 8: GND pin current is tested with VIN = VOUT(NOMINAL) + 1V and a current source load. GND pin current increases slightly in Dropout . For the fixed output versions, an internal resistor divider will typically add 100 A to the GND pin current. See GND pin current curves in the Typical Performance Characteristics 9: ADJ pin bias current flows into the ADJ 10: SHDN pin current flows into the SHDN 11: Reverse-output current is tested with the IN pin grounded and the OUT pin forced to the rated output voltage. This current flows into the OUT pin and out of the GND 12: For the LT1965 , and , the minimum input voltage specification limits the Dropout voltage under some output voltage/load 13: This IC includes overtemperature protection that is intended to protect the device during momentary overload conditions. Junction temperature will exceed 125 C (LT1965E, LT1965I) or 150 C (LT1965H)when overtemperature is active.

10 Continuous operation above the specified maximum operating junction temperature may impair device Pin Current (Note 10)VSHDN = 0V VSHDN = 10 A AQuiescent Current in ShutdownVIN = 6V, VSHDN = ARipple RejectionVIN VOUT = (AVG), VRIPPLE = , fRIPPLE = 120Hz, ILOAD = LimitVIN = 7V, VOUT = 0 VIN = VOUT(NOMINAL) + 1V, VOUT = (TJ < 125 C) (Note 6) VIN = VOUT(NOMINAL) + 1V, VOUT = , (H-Grade, TJ > 125 C) (Note 6) l A AInput Reverse-Leakage CurrentVIN = 20V, VOUT = 01mAReverse-Output Current (Note 11) , VOUT = , VIN = 0 , VOUT = , VIN = 0 , VOUT = , VIN = 0 , VOUT = , VIN = 0 LT1965 (Note 4), VOUT = , VIN = 0275 275 275 275 175525 525 525 525 400 A A A A A The l denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25 C. (Note 3) LT1965 Series61965fbFor more information Output Output VoltageLT1965 ADJ Pin Voltagetypical perForMance characteristicsTypical Dropout VoltageGuaranteed Dropout VoltageDropout VoltageQuiescent Output Output VoltageOUTPUT CURRENT (A)00 Dropout VOLTAGE (mV) G01TJ = 125 CTJ = 25 COUTPUT CURRENT (A)00 GUARANTEED Dropout VOLTAGE (mV) G02= TEST POINTSTJ = 125 CTJ = 25 C 50 2502550751251001500 Dropout VOLTAGE (mV)100200300400500501502503504501965 G03IL = = 500mAIL = 100mAIL = 1mATEMPERATURE ( C)IL = 1A0 QUIESCENT CURRENT (mA) G04 TEMPERATURE ( C) 50 250255075125100150 VIN = 6 VRL = , IL = 0 VSHDN = = PIN VOLTAGE (V) G09 TEMPERATURE ( C) 50 250255075125100150IL = VOLTAGE (V) G05 TEMPERATURE ( C) 50 250255075125100150IL = 1mA 50 VOLTAGE (V) G06 TEMPERATURE ( C)IL = VOLTAGE (V) G07 TEMPERATURE ( C) 50 250255075125100150IL = VOLTAGE (V) G08 TEMPERATURE ( C)