LT3029 Dual 500mA/500mA Low Dropout, Low …

1 LT302913029fbFor more information applicaTionFeaTuresapplicaTionsDescripTi onDual 500mA/500mA Low Dropout, Low Noise, Micropower linear RegulatorThe LT 3029 is a dual, micropower, low noise, low drop-out linear regulator. The device operates either with a common input supply or independent input supplies for each channel, over an input voltage range of to 20V. Each output supplies up to 500mA of output current with a typical dropout voltage of 300mV. quiescent current is well controlled in dropout. With an external 10nF bypass capacitor, output noise is only 20 VRMS over a 10Hz to 100kHz bandwidth. Designed for use in battery-powered systems, the low 55 A quiescent current per channel makes it an ideal choice.

2 In shutdown, quiescent current drops to less than 1 A. Shutdown control is independent for each channel, allowing for flexible power LT3029 optimizes stability and transient response with low ESR ceramic output capacitors, requiring a minimum of only F. The regulator does not require the addition of ESR, as is common with other regulators. Internal circuitry provides reverse-battery protection, reverse- current protection, current limiting with foldback and thermal shutdown. The device is available as an adjustable output voltage device with a reference voltage. The LT3029 is offered in the thermally enhanced 16-lead MSOP and 16-lead, low profile (4mm 3mm ) DFN packages.

3 To Applicationn Output current : 500mA per Channeln Low Dropout Voltage: 300mVn Low Noise: 20 VRMS (10Hz to 100kHz) n Low quiescent current : 55 A per Channeln Wide Input Voltage Range: to 20V (Common or Independent Input Supply)n Adjustable Output: Reference Voltagen Very Low quiescent current in Shutdown: <1 A per Channeln Stable with F Minimum Output Capacitorn Stable with Ceramic, Tantalum or Aluminum Electrolytic Capacitors n Reverse-Battery and Reverse Output-to-Input Protectionn current Limit with Foldback and Thermal Shutdownn Tracking/Sequencing Capability: Compatible with LTC292X Power Supply Tracking ICsn Thermally Enhanced 16-Lead MSOP and 16-Lead (4mm 3mm) DFN Packagesn General Purpose linear Regulatorn Battery-Powered Systemsn Microprocessor Core/Logic Suppliesn Post Regulator for Switching Suppliesn Tracking/Sequencing Power SuppliesDropout Voltage vs Load CurrentVOUT1 F113k1%3029 TA01 OUT2 ADJ2 BYP2 GND237k1% FSHDN1IN2 SHDN2 OUTPUT current (mA)0 DROPOUT VOLTAGE (mV)4003503002502001501005004003029 TA01b10020030050050450150250350TJ = 25 CL, LT, LTC, LTM, linear Technology and the linear logo are registered trademarks and ThinSOT is a trademark of linear Technology Corporation.

4 All other trademarks are the property of their respective more information MaxiMuM raTingsIN1, IN2 Pin Voltage .. 22 VOUT1, OUT2 Pin Voltage .. 22 VInput-to-Output Differential Voltage .. 22 VADJ1, ADJ2 Pin Voltage .. 9 VBYP1, BYP2 Pin Voltage .. , SHDN2 Pin Voltage .. 22 VOutput Short-Circuit Duration ..Indefinite(Note 1)16151413121110917 GND12345678 ADJ1 SHDN1IN1IN1IN2IN2 SHDN2 ADJ2 BYP1 NCOUT1 OUT1 GNDOUT2 OUT2 BYP2 TOP VIEWDE PACKAGE16-LEAD (4mm 3mm) PLASTIC DFN TJMAX = 125 C (LT3029E/LT3029I), JA = 38 C/W , JC = C/W TJMAX = 150 C (LT3029H), JA = 38 C/W , JC = C/W EXPOSED PAD (PIN 17) IS GND, MUST BE SOLDERED TO PCB GNDADJ1 SHDN1IN1IN1IN2IN2 SHDN2 ADJ2 BYP1 NCOUT1 OUT1 GNDOUT2 OUT2 BYP212345678161514131211109 TOP VIEWMSE PACKAGE16-LEAD PLASTIC MSOP17 GND TJMAX = 125 C (LT3029E/LT3029I/LT3029MP), JA = 37 C/W, JC: 5 C/W TO 10 C/WTJMAX = 150 C (LT3029H), JA = 37 C/W, JC.

5 5 C/W TO 10 C/W EXPOSED PAD (PIN 17) IS GND, MUST BE SOLDERED TO PCB GNDpin conFiguraTionorDer inForMaTionLEAD FREE FINISHTAPE AND REELPART MARKING*PACKAGE DESCRIPTIONTEMPERATURE RANGELT3029 EDE#PBFLT3029 EDE#TRPBF302916-Lead (4mm 3mm) Plastic DFN 40 C to 125 CLT3029 IDE#PBFLT3029 IDE#TRPBF302916-Lead (4mm 3mm) Plastic DFN 40 C to 125 CLT3029 HDE#PBFLT3029 HDE#TRPBF302916-Lead (4mm 3mm) Plastic DFN 40 C to 150 CLT3029 EMSE#PBFLT3029 EMSE#TRPBF302916-Lead Plastic MSOP 40 C to 125 CLT3029 IMSE#PBFLT3029 IMSE#TRPBF302916-Lead Plastic MSOP 40 C to 125 CLT3029 HMSE#PBFLT3029 HMSE#TRPBF302916-Lead Plastic MSOP 40 C to 150 CLT3029 MPMSE#PBFLT3029 MPMSE#TRPBF302916-Lead Plastic MSOP 55 C to 125 CLEAD BASED FINISHTAPE AND REELPART MARKING*PACKAGE DESCRIPTIONTEMPERATURE RANGELT3029 EDELT3029 EDE#TR302916-Lead (4mm 3mm) Plastic DFN 40 C to 125 CLT3029 IDELT3029 IDE#TR302916-Lead (4mm 3mm) Plastic DFN 40 C to 125 CLT3029 HDELT3029 HDE#TR302916-Lead (4mm 3mm)

6 Plastic DFN 40 C to 150 CLT3029 EMSELT3029 EMSE#TR302916-Lead Plastic MSOP 40 C to 125 CLT3029 IMSELT3029 IMSE#TR302916-Lead Plastic MSOP 40 C to 125 CLT3029 HMSELT3029 HMSE#TR302916-Lead Plastic MSOP 40 C to 150 CLT3029 MPMSELT3029 MPMSE#TR302916-Lead Plastic MSOP 55 C to 125 CConsult LTC Marketing for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping more information on lead free part marking, go to: For more information on tape and reel specifications, go to: Junction Temperature (Notes 2, 12) LT3029E .. 40 C to 125 C LT3029I .. 40 C to 125 C LT3029H .. 40 C to 150 C 55 C to 125 CStorage Temperature Range.

7 65 C to 150 CLead Temperature (Soldering, 10 sec) (MSOP Only) ..300 CLT302933029fbFor 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: The LT3029 is tested and specified under pulse load conditions such that TJ TA. The LT3029E is 100% tested at TA = 25 C. Performance of the LT3029E over the full 40 C to 125 C operating junction temperature range is assured by design, characterization and correlation with statistical process controls. The LT3029I is guaranteed over the full 40 C to 125 C operating junction temperature range.

8 The LT3029MP is 100% tested and guaranteed over the 55 C to 125 C operating junction temperature range. The LT3029H is tested at 150 C operating junction temperature. High junction temperatures degrade operating lifetimes. Operating lifetime is derated at junction temperatures greater than 125 Input Voltage (Notes 3, 11)ILOAD = , ADJ2 Pin Voltage (Notes 3, 4, 9)VIN = 2V, ILOAD = 1mA < VIN < 20V, 1mA < ILOAD < 500mA (E, I, MP) < VIN < 20V, 1mA < ILOAD < 500mA (H) l V VLine Regulation (Note 3) VIN = 2V to 20V, ILOAD = Regulation (Note 3)VIN = , ILOAD = 1mA to 500mA VIN = , ILOAD = 1mA to 500mA (E, I, MP) VIN = , ILOAD = 1mA to 500mA (H) l 15 32mV mV mVDropout Voltage VIN = VOUT(NOMINAL) (Notes 5, 6, 11)

9 ILOAD = 10mA ILOAD = 10mA VILOAD = 50mA ILOAD = 50mA VILOAD = 100mA ILOAD = 100mA VILOAD = 500mA ILOAD = 500mA VGND Pin current (per Channel) VIN = VOUT(NOMINAL) (Notes 5, 7)ILOAD = 0mA ILOAD = 1mA ILOAD = 50mA ILOAD = 100mA ILOAD = 250mA ILOAD = 500mAl l l l l l55 90 2 10150 250 2 8 16 A A mA mA mA mAOutput Voltage NoiseCOUT = 10 F, CBYP = 10nF, ILOAD = 500mA, BW = 10Hz to 100kHz20 VRMSADJ1/ADJ2 Pin Bias CurrentADJ1, ADJ2 (Notes 3, 8)30100nAShutdown ThresholdVOUT = Off to On VOUT = On to Offl l VSHDN1/SHDN2 Pin current (Note 10)VSHDN1, VSHDN2 = 0V VSHDN1, VSHDN2 = 20Vl l0 3 A AQuiescent current in Shutdown (per Channel)VIN = 6V, VSHDN1 = 0V, VSHDN2 = ARipple RejectionVIN = (Avg), VRIPPLE = , fRIPPLE = 120Hz, ILOAD = 500mA5567dBCurrent Limit (Note 9)VIN = 7V, VOUT = 0V VIN = , VOUT = l mAInput Reverse Leakage CurrentVIN = 20V, VOUT = 0Vl1mAReverse Output CurrentVOUT = , VIN = A The l denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25 C.

10 (Note 2)Note 3: The LT3029 is tested and specified for these conditions with the ADJ1/ADJ2 pin connected to the corresponding OUT1/OUT2 4: Maximum junction temperature limits operating conditions. The regulated output voltage specification does not apply for all possible combinations of input voltage and output current . When operating at maximum input voltage, limit the output current range. When operating at maximum output current , limit the input voltage range. Note 5: To satisfy minimum input voltage requirements, the LT3029 is tested and specified for these conditions with an external resistor divider (two 243k resistors) for an output voltage of The external resistor divider adds 5 A of DC load on the 6: Dropout voltage is the minimum input to output voltage differential needed to maintain regulation at a specified output current .